root / lib / hypervisor / hv_kvm.py @ 748e4b5a
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1 | eb58f9b1 | Guido Trotter | #
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2 | eb58f9b1 | Guido Trotter | #
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3 | eb58f9b1 | Guido Trotter | |
4 | eb58f9b1 | Guido Trotter | # Copyright (C) 2008 Google Inc.
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5 | eb58f9b1 | Guido Trotter | #
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6 | eb58f9b1 | Guido Trotter | # This program is free software; you can redistribute it and/or modify
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7 | eb58f9b1 | Guido Trotter | # it under the terms of the GNU General Public License as published by
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8 | eb58f9b1 | Guido Trotter | # the Free Software Foundation; either version 2 of the License, or
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9 | eb58f9b1 | Guido Trotter | # (at your option) any later version.
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10 | eb58f9b1 | Guido Trotter | #
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11 | eb58f9b1 | Guido Trotter | # This program is distributed in the hope that it will be useful, but
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12 | eb58f9b1 | Guido Trotter | # WITHOUT ANY WARRANTY; without even the implied warranty of
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13 | eb58f9b1 | Guido Trotter | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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14 | eb58f9b1 | Guido Trotter | # General Public License for more details.
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15 | eb58f9b1 | Guido Trotter | #
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16 | eb58f9b1 | Guido Trotter | # You should have received a copy of the GNU General Public License
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17 | eb58f9b1 | Guido Trotter | # along with this program; if not, write to the Free Software
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18 | eb58f9b1 | Guido Trotter | # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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19 | eb58f9b1 | Guido Trotter | # 02110-1301, USA.
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20 | eb58f9b1 | Guido Trotter | |
21 | eb58f9b1 | Guido Trotter | |
22 | eb58f9b1 | Guido Trotter | """KVM hypervisor
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23 | eb58f9b1 | Guido Trotter |
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24 | eb58f9b1 | Guido Trotter | """
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25 | eb58f9b1 | Guido Trotter | |
26 | 547a63b7 | Balazs Lecz | import errno |
27 | eb58f9b1 | Guido Trotter | import os |
28 | eb58f9b1 | Guido Trotter | import os.path |
29 | eb58f9b1 | Guido Trotter | import re |
30 | eb58f9b1 | Guido Trotter | import tempfile |
31 | 6567aff3 | Guido Trotter | import time |
32 | 30e42c4e | Guido Trotter | import logging |
33 | d19d94db | Guido Trotter | import pwd |
34 | eb58f9b1 | Guido Trotter | from cStringIO import StringIO |
35 | eb58f9b1 | Guido Trotter | |
36 | eb58f9b1 | Guido Trotter | from ganeti import utils |
37 | eb58f9b1 | Guido Trotter | from ganeti import constants |
38 | eb58f9b1 | Guido Trotter | from ganeti import errors |
39 | 38e250ba | Guido Trotter | from ganeti import serializer |
40 | 38e250ba | Guido Trotter | from ganeti import objects |
41 | 76431533 | Guido Trotter | from ganeti import uidpool |
42 | 76431533 | Guido Trotter | from ganeti import ssconf |
43 | eb58f9b1 | Guido Trotter | from ganeti.hypervisor import hv_base |
44 | a744b676 | Manuel Franceschini | from ganeti import netutils |
45 | eb58f9b1 | Guido Trotter | |
46 | eb58f9b1 | Guido Trotter | |
47 | 748e4b5a | Michael Hanselmann | _KVM_NETWORK_SCRIPT = constants.SYSCONFDIR + "/ganeti/kvm-vif-bridge"
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48 | 748e4b5a | Michael Hanselmann | |
49 | 748e4b5a | Michael Hanselmann | |
50 | 748e4b5a | Michael Hanselmann | def _WriteNetScript(instance, nic, index): |
51 | 748e4b5a | Michael Hanselmann | """Write a script to connect a net interface to the proper bridge.
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52 | 748e4b5a | Michael Hanselmann |
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53 | 748e4b5a | Michael Hanselmann | This can be used by any qemu-type hypervisor.
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54 | 748e4b5a | Michael Hanselmann |
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55 | 748e4b5a | Michael Hanselmann | @type instance: L{objects.Instance}
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56 | 748e4b5a | Michael Hanselmann | @param instance: Instance object
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57 | 748e4b5a | Michael Hanselmann | @type nic: L{objects.NIC}
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58 | 748e4b5a | Michael Hanselmann | @param nic: NIC object
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59 | 748e4b5a | Michael Hanselmann | @type index: int
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60 | 748e4b5a | Michael Hanselmann | @param index: NIC index
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61 | 748e4b5a | Michael Hanselmann | @return: Script
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62 | 748e4b5a | Michael Hanselmann | @rtype: string
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63 | 748e4b5a | Michael Hanselmann |
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64 | 748e4b5a | Michael Hanselmann | """
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65 | 748e4b5a | Michael Hanselmann | if instance.tags:
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66 | 748e4b5a | Michael Hanselmann | tags = " ".join(instance.tags)
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67 | 748e4b5a | Michael Hanselmann | else:
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68 | 748e4b5a | Michael Hanselmann | tags = ""
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69 | 748e4b5a | Michael Hanselmann | |
70 | 748e4b5a | Michael Hanselmann | buf = StringIO() |
71 | 748e4b5a | Michael Hanselmann | sw = utils.ShellWriter(buf) |
72 | 748e4b5a | Michael Hanselmann | sw.Write("#!/bin/sh")
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73 | 748e4b5a | Michael Hanselmann | sw.Write("# this is autogenerated by Ganeti, please do not edit")
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74 | 748e4b5a | Michael Hanselmann | sw.Write("export PATH=$PATH:/sbin:/usr/sbin")
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75 | 748e4b5a | Michael Hanselmann | sw.Write("export INSTANCE=%s", utils.ShellQuote(instance.name))
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76 | 748e4b5a | Michael Hanselmann | sw.Write("export MAC=%s", utils.ShellQuote(nic.mac))
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77 | 748e4b5a | Michael Hanselmann | sw.Write("export MODE=%s",
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78 | 748e4b5a | Michael Hanselmann | utils.ShellQuote(nic.nicparams[constants.NIC_MODE])) |
79 | 748e4b5a | Michael Hanselmann | sw.Write("export INTERFACE=\"$1\"")
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80 | 748e4b5a | Michael Hanselmann | sw.Write("export TAGS=%s", utils.ShellQuote(tags))
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81 | 748e4b5a | Michael Hanselmann | |
82 | 748e4b5a | Michael Hanselmann | if nic.ip:
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83 | 748e4b5a | Michael Hanselmann | sw.Write("export IP=%s", utils.ShellQuote(nic.ip))
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84 | 748e4b5a | Michael Hanselmann | |
85 | 748e4b5a | Michael Hanselmann | if nic.nicparams[constants.NIC_LINK]:
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86 | 748e4b5a | Michael Hanselmann | sw.Write("export LINK=%s",
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87 | 748e4b5a | Michael Hanselmann | utils.ShellQuote(nic.nicparams[constants.NIC_LINK])) |
88 | 748e4b5a | Michael Hanselmann | |
89 | 748e4b5a | Michael Hanselmann | if nic.nicparams[constants.NIC_MODE] == constants.NIC_MODE_BRIDGED:
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90 | 748e4b5a | Michael Hanselmann | sw.Write("export BRIDGE=%s",
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91 | 748e4b5a | Michael Hanselmann | utils.ShellQuote(nic.nicparams[constants.NIC_LINK])) |
92 | 748e4b5a | Michael Hanselmann | |
93 | 748e4b5a | Michael Hanselmann | # TODO: make this configurable at ./configure time
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94 | 748e4b5a | Michael Hanselmann | sw.Write("if [ -x %s ]; then", utils.ShellQuote(_KVM_NETWORK_SCRIPT))
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95 | 748e4b5a | Michael Hanselmann | sw.IncIndent() |
96 | 748e4b5a | Michael Hanselmann | try:
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97 | 748e4b5a | Michael Hanselmann | sw.Write("# Execute the user-specific vif file")
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98 | 748e4b5a | Michael Hanselmann | sw.Write(_KVM_NETWORK_SCRIPT) |
99 | 748e4b5a | Michael Hanselmann | finally:
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100 | 748e4b5a | Michael Hanselmann | sw.DecIndent() |
101 | 748e4b5a | Michael Hanselmann | sw.Write("else")
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102 | 748e4b5a | Michael Hanselmann | sw.IncIndent() |
103 | 748e4b5a | Michael Hanselmann | try:
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104 | 748e4b5a | Michael Hanselmann | sw.Write("ifconfig $INTERFACE 0.0.0.0 up")
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105 | 748e4b5a | Michael Hanselmann | |
106 | 748e4b5a | Michael Hanselmann | if nic.nicparams[constants.NIC_MODE] == constants.NIC_MODE_BRIDGED:
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107 | 748e4b5a | Michael Hanselmann | sw.Write("# Connect the interface to the bridge")
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108 | 748e4b5a | Michael Hanselmann | sw.Write("brctl addif $BRIDGE $INTERFACE")
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109 | 748e4b5a | Michael Hanselmann | |
110 | 748e4b5a | Michael Hanselmann | elif nic.nicparams[constants.NIC_MODE] == constants.NIC_MODE_ROUTED:
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111 | 748e4b5a | Michael Hanselmann | if not nic.ip: |
112 | 748e4b5a | Michael Hanselmann | raise errors.HypervisorError("nic/%d is routed, but has no IP" |
113 | 748e4b5a | Michael Hanselmann | " address" % index)
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114 | 748e4b5a | Michael Hanselmann | |
115 | 748e4b5a | Michael Hanselmann | sw.Write("# Route traffic targeted at the IP to the interface")
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116 | 748e4b5a | Michael Hanselmann | if nic.nicparams[constants.NIC_LINK]:
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117 | 748e4b5a | Michael Hanselmann | sw.Write("while ip rule del dev $INTERFACE; do :; done")
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118 | 748e4b5a | Michael Hanselmann | sw.Write("ip rule add dev $INTERFACE table $LINK")
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119 | 748e4b5a | Michael Hanselmann | sw.Write("ip route replace $IP table $LINK proto static"
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120 | 748e4b5a | Michael Hanselmann | " dev $INTERFACE")
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121 | 748e4b5a | Michael Hanselmann | else:
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122 | 748e4b5a | Michael Hanselmann | sw.Write("ip route replace $IP proto static dev $INTERFACE")
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123 | 748e4b5a | Michael Hanselmann | |
124 | 748e4b5a | Michael Hanselmann | interface_v4_conf = "/proc/sys/net/ipv4/conf/$INTERFACE"
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125 | 748e4b5a | Michael Hanselmann | sw.Write(" if [ -d %s ]; then", interface_v4_conf)
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126 | 748e4b5a | Michael Hanselmann | sw.IncIndent() |
127 | 748e4b5a | Michael Hanselmann | try:
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128 | 748e4b5a | Michael Hanselmann | sw.Write("echo 1 > %s/proxy_arp", interface_v4_conf)
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129 | 748e4b5a | Michael Hanselmann | sw.Write("echo 1 > %s/forwarding", interface_v4_conf)
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130 | 748e4b5a | Michael Hanselmann | finally:
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131 | 748e4b5a | Michael Hanselmann | sw.DecIndent() |
132 | 748e4b5a | Michael Hanselmann | sw.Write("fi")
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133 | 748e4b5a | Michael Hanselmann | |
134 | 748e4b5a | Michael Hanselmann | interface_v6_conf = "/proc/sys/net/ipv6/conf/$INTERFACE"
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135 | 748e4b5a | Michael Hanselmann | sw.Write("if [ -d %s ]; then", interface_v6_conf)
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136 | 748e4b5a | Michael Hanselmann | sw.IncIndent() |
137 | 748e4b5a | Michael Hanselmann | try:
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138 | 748e4b5a | Michael Hanselmann | sw.Write("echo 1 > %s/proxy_ndp", interface_v6_conf)
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139 | 748e4b5a | Michael Hanselmann | sw.Write("echo 1 > %s/forwarding", interface_v6_conf)
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140 | 748e4b5a | Michael Hanselmann | finally:
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141 | 748e4b5a | Michael Hanselmann | sw.DecIndent() |
142 | 748e4b5a | Michael Hanselmann | sw.Write("fi")
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143 | 748e4b5a | Michael Hanselmann | finally:
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144 | 748e4b5a | Michael Hanselmann | sw.DecIndent() |
145 | 748e4b5a | Michael Hanselmann | sw.Write("fi")
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146 | 748e4b5a | Michael Hanselmann | |
147 | 748e4b5a | Michael Hanselmann | return buf.getvalue()
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148 | 748e4b5a | Michael Hanselmann | |
149 | 748e4b5a | Michael Hanselmann | |
150 | eb58f9b1 | Guido Trotter | class KVMHypervisor(hv_base.BaseHypervisor): |
151 | c4469f75 | Guido Trotter | """KVM hypervisor interface"""
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152 | d271c6fd | Iustin Pop | CAN_MIGRATE = True
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153 | eb58f9b1 | Guido Trotter | |
154 | eb58f9b1 | Guido Trotter | _ROOT_DIR = constants.RUN_GANETI_DIR + "/kvm-hypervisor"
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155 | a1d79fc6 | Guido Trotter | _PIDS_DIR = _ROOT_DIR + "/pid" # contains live instances pids |
156 | 7548396c | Guido Trotter | _UIDS_DIR = _ROOT_DIR + "/uid" # contains instances reserved uids |
157 | a1d79fc6 | Guido Trotter | _CTRL_DIR = _ROOT_DIR + "/ctrl" # contains instances control sockets |
158 | a1d79fc6 | Guido Trotter | _CONF_DIR = _ROOT_DIR + "/conf" # contains instances startup data |
159 | 547a63b7 | Balazs Lecz | # KVM instances with chroot enabled are started in empty chroot directories.
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160 | 547a63b7 | Balazs Lecz | _CHROOT_DIR = _ROOT_DIR + "/chroot" # for empty chroot directories |
161 | 547a63b7 | Balazs Lecz | # After an instance is stopped, its chroot directory is removed.
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162 | 547a63b7 | Balazs Lecz | # If the chroot directory is not empty, it can't be removed.
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163 | 547a63b7 | Balazs Lecz | # A non-empty chroot directory indicates a possible security incident.
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164 | 547a63b7 | Balazs Lecz | # To support forensics, the non-empty chroot directory is quarantined in
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165 | 547a63b7 | Balazs Lecz | # a separate directory, called 'chroot-quarantine'.
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166 | 547a63b7 | Balazs Lecz | _CHROOT_QUARANTINE_DIR = _ROOT_DIR + "/chroot-quarantine"
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167 | 547a63b7 | Balazs Lecz | _DIRS = [_ROOT_DIR, _PIDS_DIR, _UIDS_DIR, _CTRL_DIR, _CONF_DIR, |
168 | 547a63b7 | Balazs Lecz | _CHROOT_DIR, _CHROOT_QUARANTINE_DIR] |
169 | eb58f9b1 | Guido Trotter | |
170 | 205ab586 | Iustin Pop | PARAMETERS = { |
171 | 205ab586 | Iustin Pop | constants.HV_KERNEL_PATH: hv_base.OPT_FILE_CHECK, |
172 | 205ab586 | Iustin Pop | constants.HV_INITRD_PATH: hv_base.OPT_FILE_CHECK, |
173 | 205ab586 | Iustin Pop | constants.HV_ROOT_PATH: hv_base.NO_CHECK, |
174 | 205ab586 | Iustin Pop | constants.HV_KERNEL_ARGS: hv_base.NO_CHECK, |
175 | 205ab586 | Iustin Pop | constants.HV_ACPI: hv_base.NO_CHECK, |
176 | 205ab586 | Iustin Pop | constants.HV_SERIAL_CONSOLE: hv_base.NO_CHECK, |
177 | d73ef63f | Michael Hanselmann | constants.HV_VNC_BIND_ADDRESS: |
178 | a744b676 | Manuel Franceschini | (False, lambda x: (netutils.IsValidIP4(x) or utils.IsNormAbsPath(x)), |
179 | d73ef63f | Michael Hanselmann | "the VNC bind address must be either a valid IP address or an absolute"
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180 | d73ef63f | Michael Hanselmann | " pathname", None, None), |
181 | 205ab586 | Iustin Pop | constants.HV_VNC_TLS: hv_base.NO_CHECK, |
182 | 205ab586 | Iustin Pop | constants.HV_VNC_X509: hv_base.OPT_DIR_CHECK, |
183 | 205ab586 | Iustin Pop | constants.HV_VNC_X509_VERIFY: hv_base.NO_CHECK, |
184 | 6e6bb8d5 | Guido Trotter | constants.HV_VNC_PASSWORD_FILE: hv_base.OPT_FILE_CHECK, |
185 | 205ab586 | Iustin Pop | constants.HV_CDROM_IMAGE_PATH: hv_base.OPT_FILE_CHECK, |
186 | d73ef63f | Michael Hanselmann | constants.HV_BOOT_ORDER: |
187 | d73ef63f | Michael Hanselmann | hv_base.ParamInSet(True, constants.HT_KVM_VALID_BO_TYPES),
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188 | d73ef63f | Michael Hanselmann | constants.HV_NIC_TYPE: |
189 | d73ef63f | Michael Hanselmann | hv_base.ParamInSet(True, constants.HT_KVM_VALID_NIC_TYPES),
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190 | d73ef63f | Michael Hanselmann | constants.HV_DISK_TYPE: |
191 | d73ef63f | Michael Hanselmann | hv_base.ParamInSet(True, constants.HT_KVM_VALID_DISK_TYPES),
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192 | d73ef63f | Michael Hanselmann | constants.HV_USB_MOUSE: |
193 | d73ef63f | Michael Hanselmann | hv_base.ParamInSet(False, constants.HT_KVM_VALID_MOUSE_TYPES),
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194 | 78411c60 | Iustin Pop | constants.HV_MIGRATION_PORT: hv_base.NET_PORT_CHECK, |
195 | e43d4f9f | Apollon Oikonomopoulos | constants.HV_MIGRATION_BANDWIDTH: hv_base.NO_CHECK, |
196 | e43d4f9f | Apollon Oikonomopoulos | constants.HV_MIGRATION_DOWNTIME: hv_base.NO_CHECK, |
197 | 6b970cef | Jun Futagawa | constants.HV_USE_LOCALTIME: hv_base.NO_CHECK, |
198 | 19572932 | Iustin Pop | constants.HV_DISK_CACHE: |
199 | 19572932 | Iustin Pop | hv_base.ParamInSet(True, constants.HT_VALID_CACHE_TYPES),
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200 | d19d94db | Guido Trotter | constants.HV_SECURITY_MODEL: |
201 | d19d94db | Guido Trotter | hv_base.ParamInSet(True, constants.HT_KVM_VALID_SM_TYPES),
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202 | d19d94db | Guido Trotter | constants.HV_SECURITY_DOMAIN: hv_base.NO_CHECK, |
203 | 7ba594c0 | Guido Trotter | constants.HV_KVM_FLAG: |
204 | 7ba594c0 | Guido Trotter | hv_base.ParamInSet(False, constants.HT_KVM_FLAG_VALUES),
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205 | fbe27e2b | Guido Trotter | constants.HV_VHOST_NET: hv_base.NO_CHECK, |
206 | 547a63b7 | Balazs Lecz | constants.HV_KVM_USE_CHROOT: hv_base.NO_CHECK, |
207 | 205ab586 | Iustin Pop | } |
208 | 6b5605e8 | Iustin Pop | |
209 | 30e42c4e | Guido Trotter | _MIGRATION_STATUS_RE = re.compile('Migration\s+status:\s+(\w+)',
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210 | 30e42c4e | Guido Trotter | re.M | re.I) |
211 | c4e388a5 | Guido Trotter | _MIGRATION_INFO_MAX_BAD_ANSWERS = 5
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212 | c4e388a5 | Guido Trotter | _MIGRATION_INFO_RETRY_DELAY = 2
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213 | 30e42c4e | Guido Trotter | |
214 | 64bfbc08 | Guido Trotter | ANCILLARY_FILES = [ |
215 | 64bfbc08 | Guido Trotter | _KVM_NETWORK_SCRIPT, |
216 | 64bfbc08 | Guido Trotter | ] |
217 | 64bfbc08 | Guido Trotter | |
218 | eb58f9b1 | Guido Trotter | def __init__(self): |
219 | eb58f9b1 | Guido Trotter | hv_base.BaseHypervisor.__init__(self)
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220 | eb58f9b1 | Guido Trotter | # Let's make sure the directories we need exist, even if the RUN_DIR lives
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221 | eb58f9b1 | Guido Trotter | # in a tmpfs filesystem or has been otherwise wiped out.
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222 | 29921401 | Iustin Pop | dirs = [(dname, constants.RUN_DIRS_MODE) for dname in self._DIRS] |
223 | 9afb67fe | Guido Trotter | utils.EnsureDirs(dirs) |
224 | eb58f9b1 | Guido Trotter | |
225 | 30786fc9 | Iustin Pop | @classmethod
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226 | 30786fc9 | Iustin Pop | def _InstancePidFile(cls, instance_name): |
227 | 98ec75d6 | Iustin Pop | """Returns the instance pidfile.
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228 | 98ec75d6 | Iustin Pop |
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229 | 98ec75d6 | Iustin Pop | """
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230 | 30786fc9 | Iustin Pop | return utils.PathJoin(cls._PIDS_DIR, instance_name)
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231 | 98ec75d6 | Iustin Pop | |
232 | 263b8de6 | Guido Trotter | @classmethod
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233 | 7548396c | Guido Trotter | def _InstanceUidFile(cls, instance_name): |
234 | 7548396c | Guido Trotter | """Returns the instance uidfile.
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235 | 7548396c | Guido Trotter |
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236 | 7548396c | Guido Trotter | """
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237 | 7548396c | Guido Trotter | return utils.PathJoin(cls._UIDS_DIR, instance_name)
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238 | 7548396c | Guido Trotter | |
239 | 7548396c | Guido Trotter | @classmethod
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240 | 263b8de6 | Guido Trotter | def _InstancePidInfo(cls, pid): |
241 | 263b8de6 | Guido Trotter | """Check pid file for instance information.
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242 | 263b8de6 | Guido Trotter |
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243 | 263b8de6 | Guido Trotter | Check that a pid file is associated with an instance, and retrieve
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244 | 263b8de6 | Guido Trotter | information from its command line.
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245 | 263b8de6 | Guido Trotter |
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246 | 263b8de6 | Guido Trotter | @type pid: string or int
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247 | 263b8de6 | Guido Trotter | @param pid: process id of the instance to check
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248 | 263b8de6 | Guido Trotter | @rtype: tuple
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249 | 263b8de6 | Guido Trotter | @return: (instance_name, memory, vcpus)
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250 | 263b8de6 | Guido Trotter | @raise errors.HypervisorError: when an instance cannot be found
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251 | 263b8de6 | Guido Trotter |
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252 | 263b8de6 | Guido Trotter | """
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253 | 263b8de6 | Guido Trotter | alive = utils.IsProcessAlive(pid) |
254 | 263b8de6 | Guido Trotter | if not alive: |
255 | 263b8de6 | Guido Trotter | raise errors.HypervisorError("Cannot get info for pid %s" % pid) |
256 | 263b8de6 | Guido Trotter | |
257 | 263b8de6 | Guido Trotter | cmdline_file = utils.PathJoin("/proc", str(pid), "cmdline") |
258 | 263b8de6 | Guido Trotter | try:
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259 | 263b8de6 | Guido Trotter | cmdline = utils.ReadFile(cmdline_file) |
260 | 263b8de6 | Guido Trotter | except EnvironmentError, err: |
261 | 263b8de6 | Guido Trotter | raise errors.HypervisorError("Can't open cmdline file for pid %s: %s" % |
262 | 263b8de6 | Guido Trotter | (pid, err)) |
263 | 263b8de6 | Guido Trotter | |
264 | 263b8de6 | Guido Trotter | instance = None
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265 | 263b8de6 | Guido Trotter | memory = 0
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266 | 263b8de6 | Guido Trotter | vcpus = 0
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267 | 263b8de6 | Guido Trotter | |
268 | 263b8de6 | Guido Trotter | arg_list = cmdline.split('\x00')
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269 | 263b8de6 | Guido Trotter | while arg_list:
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270 | 263b8de6 | Guido Trotter | arg = arg_list.pop(0)
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271 | 263b8de6 | Guido Trotter | if arg == "-name": |
272 | 263b8de6 | Guido Trotter | instance = arg_list.pop(0)
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273 | 263b8de6 | Guido Trotter | elif arg == "-m": |
274 | 263b8de6 | Guido Trotter | memory = int(arg_list.pop(0)) |
275 | 263b8de6 | Guido Trotter | elif arg == "-smp": |
276 | 263b8de6 | Guido Trotter | vcpus = int(arg_list.pop(0)) |
277 | 263b8de6 | Guido Trotter | |
278 | 263b8de6 | Guido Trotter | if instance is None: |
279 | 263b8de6 | Guido Trotter | raise errors.HypervisorError("Pid %s doesn't contain a ganeti kvm" |
280 | 263b8de6 | Guido Trotter | " instance" % pid)
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281 | 263b8de6 | Guido Trotter | |
282 | 263b8de6 | Guido Trotter | return (instance, memory, vcpus)
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283 | 263b8de6 | Guido Trotter | |
284 | 1f8b3a27 | Guido Trotter | def _InstancePidAlive(self, instance_name): |
285 | 263b8de6 | Guido Trotter | """Returns the instance pidfile, pid, and liveness.
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286 | 263b8de6 | Guido Trotter |
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287 | 263b8de6 | Guido Trotter | @type instance_name: string
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288 | 263b8de6 | Guido Trotter | @param instance_name: instance name
|
289 | 263b8de6 | Guido Trotter | @rtype: tuple
|
290 | 263b8de6 | Guido Trotter | @return: (pid file name, pid, liveness)
|
291 | 1f8b3a27 | Guido Trotter |
|
292 | 1f8b3a27 | Guido Trotter | """
|
293 | 98ec75d6 | Iustin Pop | pidfile = self._InstancePidFile(instance_name)
|
294 | 1f8b3a27 | Guido Trotter | pid = utils.ReadPidFile(pidfile) |
295 | 263b8de6 | Guido Trotter | |
296 | 263b8de6 | Guido Trotter | alive = False
|
297 | 263b8de6 | Guido Trotter | try:
|
298 | 263b8de6 | Guido Trotter | cmd_instance = self._InstancePidInfo(pid)[0] |
299 | 263b8de6 | Guido Trotter | alive = (cmd_instance == instance_name) |
300 | 263b8de6 | Guido Trotter | except errors.HypervisorError:
|
301 | 263b8de6 | Guido Trotter | pass
|
302 | 1f8b3a27 | Guido Trotter | |
303 | 1f8b3a27 | Guido Trotter | return (pidfile, pid, alive)
|
304 | 1f8b3a27 | Guido Trotter | |
305 | 5905901c | Iustin Pop | def _CheckDown(self, instance_name): |
306 | 5905901c | Iustin Pop | """Raises an error unless the given instance is down.
|
307 | 5905901c | Iustin Pop |
|
308 | 5905901c | Iustin Pop | """
|
309 | 5905901c | Iustin Pop | alive = self._InstancePidAlive(instance_name)[2] |
310 | 5905901c | Iustin Pop | if alive:
|
311 | 5905901c | Iustin Pop | raise errors.HypervisorError("Failed to start instance %s: %s" % |
312 | 5905901c | Iustin Pop | (instance_name, "already running"))
|
313 | 5905901c | Iustin Pop | |
314 | 0df4d98a | Guido Trotter | @classmethod
|
315 | 0df4d98a | Guido Trotter | def _InstanceMonitor(cls, instance_name): |
316 | c4fbefc8 | Guido Trotter | """Returns the instance monitor socket name
|
317 | c4fbefc8 | Guido Trotter |
|
318 | c4fbefc8 | Guido Trotter | """
|
319 | 30786fc9 | Iustin Pop | return utils.PathJoin(cls._CTRL_DIR, "%s.monitor" % instance_name) |
320 | c4fbefc8 | Guido Trotter | |
321 | 0df4d98a | Guido Trotter | @classmethod
|
322 | 0df4d98a | Guido Trotter | def _InstanceSerial(cls, instance_name): |
323 | c4fbefc8 | Guido Trotter | """Returns the instance serial socket name
|
324 | c4fbefc8 | Guido Trotter |
|
325 | c4fbefc8 | Guido Trotter | """
|
326 | 30786fc9 | Iustin Pop | return utils.PathJoin(cls._CTRL_DIR, "%s.serial" % instance_name) |
327 | c4fbefc8 | Guido Trotter | |
328 | 86d6bc2a | Guido Trotter | @staticmethod
|
329 | 86d6bc2a | Guido Trotter | def _SocatUnixConsoleParams(): |
330 | 86d6bc2a | Guido Trotter | """Returns the correct parameters for socat
|
331 | 86d6bc2a | Guido Trotter |
|
332 | 86d6bc2a | Guido Trotter | If we have a new-enough socat we can use raw mode with an escape character.
|
333 | 86d6bc2a | Guido Trotter |
|
334 | 86d6bc2a | Guido Trotter | """
|
335 | fe5b0c42 | Michael Hanselmann | if constants.SOCAT_USE_ESCAPE:
|
336 | 86d6bc2a | Guido Trotter | return "raw,echo=0,escape=%s" % constants.SOCAT_ESCAPE_CODE |
337 | 86d6bc2a | Guido Trotter | else:
|
338 | 86d6bc2a | Guido Trotter | return "echo=0,icanon=0" |
339 | 86d6bc2a | Guido Trotter | |
340 | 0df4d98a | Guido Trotter | @classmethod
|
341 | 0df4d98a | Guido Trotter | def _InstanceKVMRuntime(cls, instance_name): |
342 | 38e250ba | Guido Trotter | """Returns the instance KVM runtime filename
|
343 | 38e250ba | Guido Trotter |
|
344 | 38e250ba | Guido Trotter | """
|
345 | 30786fc9 | Iustin Pop | return utils.PathJoin(cls._CONF_DIR, "%s.runtime" % instance_name) |
346 | 38e250ba | Guido Trotter | |
347 | 7e66c35b | Guido Trotter | @classmethod
|
348 | 547a63b7 | Balazs Lecz | def _InstanceChrootDir(cls, instance_name): |
349 | 547a63b7 | Balazs Lecz | """Returns the name of the KVM chroot dir of the instance
|
350 | 547a63b7 | Balazs Lecz |
|
351 | 547a63b7 | Balazs Lecz | """
|
352 | 547a63b7 | Balazs Lecz | return utils.PathJoin(cls._CHROOT_DIR, instance_name)
|
353 | 547a63b7 | Balazs Lecz | |
354 | 547a63b7 | Balazs Lecz | @classmethod
|
355 | 7548396c | Guido Trotter | def _TryReadUidFile(cls, uid_file): |
356 | 7548396c | Guido Trotter | """Try to read a uid file
|
357 | 7548396c | Guido Trotter |
|
358 | 7548396c | Guido Trotter | """
|
359 | 7548396c | Guido Trotter | if os.path.exists(uid_file):
|
360 | 7548396c | Guido Trotter | try:
|
361 | 682f7601 | Guido Trotter | uid = int(utils.ReadOneLineFile(uid_file))
|
362 | aa0b600b | Guido Trotter | return uid
|
363 | 7548396c | Guido Trotter | except EnvironmentError: |
364 | 7548396c | Guido Trotter | logging.warning("Can't read uid file", exc_info=True) |
365 | 7548396c | Guido Trotter | except (TypeError, ValueError): |
366 | 7548396c | Guido Trotter | logging.warning("Can't parse uid file contents", exc_info=True) |
367 | aa0b600b | Guido Trotter | return None |
368 | 7548396c | Guido Trotter | |
369 | 7548396c | Guido Trotter | @classmethod
|
370 | 7e66c35b | Guido Trotter | def _RemoveInstanceRuntimeFiles(cls, pidfile, instance_name): |
371 | 547a63b7 | Balazs Lecz | """Removes an instance's rutime sockets/files/dirs.
|
372 | 7e66c35b | Guido Trotter |
|
373 | 7e66c35b | Guido Trotter | """
|
374 | 7e66c35b | Guido Trotter | utils.RemoveFile(pidfile) |
375 | 7e66c35b | Guido Trotter | utils.RemoveFile(cls._InstanceMonitor(instance_name)) |
376 | 7e66c35b | Guido Trotter | utils.RemoveFile(cls._InstanceSerial(instance_name)) |
377 | 7e66c35b | Guido Trotter | utils.RemoveFile(cls._InstanceKVMRuntime(instance_name)) |
378 | 7548396c | Guido Trotter | uid_file = cls._InstanceUidFile(instance_name) |
379 | 7548396c | Guido Trotter | uid = cls._TryReadUidFile(uid_file) |
380 | 7548396c | Guido Trotter | utils.RemoveFile(uid_file) |
381 | 7548396c | Guido Trotter | if uid is not None: |
382 | 7548396c | Guido Trotter | uidpool.ReleaseUid(uid) |
383 | 547a63b7 | Balazs Lecz | try:
|
384 | 547a63b7 | Balazs Lecz | chroot_dir = cls._InstanceChrootDir(instance_name) |
385 | 547a63b7 | Balazs Lecz | utils.RemoveDir(chroot_dir) |
386 | 547a63b7 | Balazs Lecz | except OSError, err: |
387 | 547a63b7 | Balazs Lecz | if err.errno == errno.ENOTEMPTY:
|
388 | 547a63b7 | Balazs Lecz | # The chroot directory is expected to be empty, but it isn't.
|
389 | 547a63b7 | Balazs Lecz | new_chroot_dir = tempfile.mkdtemp(dir=cls._CHROOT_QUARANTINE_DIR, |
390 | 547a63b7 | Balazs Lecz | prefix="%s-%s-" %
|
391 | 547a63b7 | Balazs Lecz | (instance_name, |
392 | 547a63b7 | Balazs Lecz | utils.TimestampForFilename())) |
393 | 547a63b7 | Balazs Lecz | logging.warning("The chroot directory of instance %s can not be"
|
394 | 547a63b7 | Balazs Lecz | " removed as it is not empty. Moving it to the"
|
395 | 547a63b7 | Balazs Lecz | " quarantine instead. Please investigate the"
|
396 | 547a63b7 | Balazs Lecz | " contents (%s) and clean up manually",
|
397 | 547a63b7 | Balazs Lecz | instance_name, new_chroot_dir) |
398 | 547a63b7 | Balazs Lecz | utils.RenameFile(chroot_dir, new_chroot_dir) |
399 | 547a63b7 | Balazs Lecz | else:
|
400 | 547a63b7 | Balazs Lecz | raise
|
401 | 7e66c35b | Guido Trotter | |
402 | 748e4b5a | Michael Hanselmann | @staticmethod
|
403 | 748e4b5a | Michael Hanselmann | def _WriteNetScriptFile(instance, seq, nic): |
404 | eb58f9b1 | Guido Trotter | """Write a script to connect a net interface to the proper bridge.
|
405 | eb58f9b1 | Guido Trotter |
|
406 | eb58f9b1 | Guido Trotter | This can be used by any qemu-type hypervisor.
|
407 | eb58f9b1 | Guido Trotter |
|
408 | eb58f9b1 | Guido Trotter | @param instance: instance we're acting on
|
409 | eb58f9b1 | Guido Trotter | @type instance: instance object
|
410 | eb58f9b1 | Guido Trotter | @param seq: nic sequence number
|
411 | eb58f9b1 | Guido Trotter | @type seq: int
|
412 | eb58f9b1 | Guido Trotter | @param nic: nic we're acting on
|
413 | eb58f9b1 | Guido Trotter | @type nic: nic object
|
414 | eb58f9b1 | Guido Trotter | @return: netscript file name
|
415 | eb58f9b1 | Guido Trotter | @rtype: string
|
416 | eb58f9b1 | Guido Trotter |
|
417 | eb58f9b1 | Guido Trotter | """
|
418 | 748e4b5a | Michael Hanselmann | script = _WriteNetScript(instance, nic, seq) |
419 | 748e4b5a | Michael Hanselmann | |
420 | eb58f9b1 | Guido Trotter | # As much as we'd like to put this in our _ROOT_DIR, that will happen to be
|
421 | eb58f9b1 | Guido Trotter | # mounted noexec sometimes, so we'll have to find another place.
|
422 | eb58f9b1 | Guido Trotter | (tmpfd, tmpfile_name) = tempfile.mkstemp() |
423 | eb58f9b1 | Guido Trotter | tmpfile = os.fdopen(tmpfd, 'w')
|
424 | d73ef63f | Michael Hanselmann | try:
|
425 | 748e4b5a | Michael Hanselmann | tmpfile.write(script) |
426 | d73ef63f | Michael Hanselmann | finally:
|
427 | d73ef63f | Michael Hanselmann | tmpfile.close() |
428 | eb58f9b1 | Guido Trotter | os.chmod(tmpfile_name, 0755)
|
429 | eb58f9b1 | Guido Trotter | return tmpfile_name
|
430 | eb58f9b1 | Guido Trotter | |
431 | eb58f9b1 | Guido Trotter | def ListInstances(self): |
432 | eb58f9b1 | Guido Trotter | """Get the list of running instances.
|
433 | eb58f9b1 | Guido Trotter |
|
434 | c41eea6e | Iustin Pop | We can do this by listing our live instances directory and
|
435 | c41eea6e | Iustin Pop | checking whether the associated kvm process is still alive.
|
436 | eb58f9b1 | Guido Trotter |
|
437 | eb58f9b1 | Guido Trotter | """
|
438 | eb58f9b1 | Guido Trotter | result = [] |
439 | eb58f9b1 | Guido Trotter | for name in os.listdir(self._PIDS_DIR): |
440 | 263b8de6 | Guido Trotter | if self._InstancePidAlive(name)[2]: |
441 | eb58f9b1 | Guido Trotter | result.append(name) |
442 | eb58f9b1 | Guido Trotter | return result
|
443 | eb58f9b1 | Guido Trotter | |
444 | eb58f9b1 | Guido Trotter | def GetInstanceInfo(self, instance_name): |
445 | eb58f9b1 | Guido Trotter | """Get instance properties.
|
446 | eb58f9b1 | Guido Trotter |
|
447 | 4fbb3c60 | Guido Trotter | @type instance_name: string
|
448 | c41eea6e | Iustin Pop | @param instance_name: the instance name
|
449 | 4fbb3c60 | Guido Trotter | @rtype: tuple of strings
|
450 | 4fbb3c60 | Guido Trotter | @return: (name, id, memory, vcpus, stat, times)
|
451 | eb58f9b1 | Guido Trotter |
|
452 | eb58f9b1 | Guido Trotter | """
|
453 | 1122eb25 | Iustin Pop | _, pid, alive = self._InstancePidAlive(instance_name)
|
454 | 1f8b3a27 | Guido Trotter | if not alive: |
455 | eb58f9b1 | Guido Trotter | return None |
456 | eb58f9b1 | Guido Trotter | |
457 | 263b8de6 | Guido Trotter | _, memory, vcpus = self._InstancePidInfo(pid)
|
458 | eb58f9b1 | Guido Trotter | stat = "---b-"
|
459 | eb58f9b1 | Guido Trotter | times = "0"
|
460 | eb58f9b1 | Guido Trotter | |
461 | eb58f9b1 | Guido Trotter | return (instance_name, pid, memory, vcpus, stat, times)
|
462 | eb58f9b1 | Guido Trotter | |
463 | eb58f9b1 | Guido Trotter | def GetAllInstancesInfo(self): |
464 | eb58f9b1 | Guido Trotter | """Get properties of all instances.
|
465 | eb58f9b1 | Guido Trotter |
|
466 | c41eea6e | Iustin Pop | @return: list of tuples (name, id, memory, vcpus, stat, times)
|
467 | c41eea6e | Iustin Pop |
|
468 | eb58f9b1 | Guido Trotter | """
|
469 | eb58f9b1 | Guido Trotter | data = [] |
470 | eb58f9b1 | Guido Trotter | for name in os.listdir(self._PIDS_DIR): |
471 | 263b8de6 | Guido Trotter | try:
|
472 | 263b8de6 | Guido Trotter | info = self.GetInstanceInfo(name)
|
473 | 263b8de6 | Guido Trotter | except errors.HypervisorError:
|
474 | 263b8de6 | Guido Trotter | continue
|
475 | 263b8de6 | Guido Trotter | if info:
|
476 | 263b8de6 | Guido Trotter | data.append(info) |
477 | eb58f9b1 | Guido Trotter | return data
|
478 | eb58f9b1 | Guido Trotter | |
479 | 07813a9e | Iustin Pop | def _GenerateKVMRuntime(self, instance, block_devices): |
480 | ee5f20b0 | Guido Trotter | """Generate KVM information to start an instance.
|
481 | eb58f9b1 | Guido Trotter |
|
482 | eb58f9b1 | Guido Trotter | """
|
483 | 98ec75d6 | Iustin Pop | pidfile = self._InstancePidFile(instance.name)
|
484 | eb58f9b1 | Guido Trotter | kvm = constants.KVM_PATH |
485 | eb58f9b1 | Guido Trotter | kvm_cmd = [kvm] |
486 | c6a39fc2 | Guido Trotter | # used just by the vnc server, if enabled
|
487 | c6a39fc2 | Guido Trotter | kvm_cmd.extend(['-name', instance.name])
|
488 | 8b3fd458 | Iustin Pop | kvm_cmd.extend(['-m', instance.beparams[constants.BE_MEMORY]])
|
489 | 8b3fd458 | Iustin Pop | kvm_cmd.extend(['-smp', instance.beparams[constants.BE_VCPUS]])
|
490 | eb58f9b1 | Guido Trotter | kvm_cmd.extend(['-pidfile', pidfile])
|
491 | eb58f9b1 | Guido Trotter | kvm_cmd.extend(['-daemonize'])
|
492 | 6b5605e8 | Iustin Pop | if not instance.hvparams[constants.HV_ACPI]: |
493 | eb58f9b1 | Guido Trotter | kvm_cmd.extend(['-no-acpi'])
|
494 | eb58f9b1 | Guido Trotter | |
495 | a985b417 | Iustin Pop | hvp = instance.hvparams |
496 | 835528af | Iustin Pop | boot_disk = hvp[constants.HV_BOOT_ORDER] == constants.HT_BO_DISK |
497 | 835528af | Iustin Pop | boot_cdrom = hvp[constants.HV_BOOT_ORDER] == constants.HT_BO_CDROM |
498 | 835528af | Iustin Pop | boot_network = hvp[constants.HV_BOOT_ORDER] == constants.HT_BO_NETWORK |
499 | 8745c3d7 | Guido Trotter | |
500 | 7ba594c0 | Guido Trotter | if hvp[constants.HV_KVM_FLAG] == constants.HT_KVM_ENABLED:
|
501 | 7ba594c0 | Guido Trotter | kvm_cmd.extend(["-enable-kvm"])
|
502 | 7ba594c0 | Guido Trotter | elif hvp[constants.HV_KVM_FLAG] == constants.HT_KVM_DISABLED:
|
503 | 7ba594c0 | Guido Trotter | kvm_cmd.extend(["-disable-kvm"])
|
504 | 7ba594c0 | Guido Trotter | |
505 | 8745c3d7 | Guido Trotter | if boot_network:
|
506 | 8745c3d7 | Guido Trotter | kvm_cmd.extend(['-boot', 'n']) |
507 | 1213604d | Guido Trotter | |
508 | a985b417 | Iustin Pop | disk_type = hvp[constants.HV_DISK_TYPE] |
509 | 1213604d | Guido Trotter | if disk_type == constants.HT_DISK_PARAVIRTUAL:
|
510 | 1213604d | Guido Trotter | if_val = ',if=virtio'
|
511 | 1213604d | Guido Trotter | else:
|
512 | 1213604d | Guido Trotter | if_val = ',if=%s' % disk_type
|
513 | 19572932 | Iustin Pop | # Cache mode
|
514 | 19572932 | Iustin Pop | disk_cache = hvp[constants.HV_DISK_CACHE] |
515 | 19572932 | Iustin Pop | if disk_cache != constants.HT_CACHE_DEFAULT:
|
516 | 19572932 | Iustin Pop | cache_val = ",cache=%s" % disk_cache
|
517 | 19572932 | Iustin Pop | else:
|
518 | 19572932 | Iustin Pop | cache_val = ""
|
519 | 069cfbf1 | Iustin Pop | for cfdev, dev_path in block_devices: |
520 | d34b16d7 | Iustin Pop | if cfdev.mode != constants.DISK_RDWR:
|
521 | d34b16d7 | Iustin Pop | raise errors.HypervisorError("Instance has read-only disks which" |
522 | d34b16d7 | Iustin Pop | " are not supported by KVM")
|
523 | eb58f9b1 | Guido Trotter | # TODO: handle FD_LOOP and FD_BLKTAP (?)
|
524 | 66d5dbef | Guido Trotter | if boot_disk:
|
525 | 9dd363eb | Guido Trotter | kvm_cmd.extend(['-boot', 'c']) |
526 | 9cf4321f | Apollon Oikonomopoulos | if disk_type != constants.HT_DISK_IDE:
|
527 | 74a4c11b | Guido Trotter | boot_val = ',boot=on'
|
528 | 9cf4321f | Apollon Oikonomopoulos | else:
|
529 | 74a4c11b | Guido Trotter | boot_val = ''
|
530 | 8745c3d7 | Guido Trotter | # We only boot from the first disk
|
531 | 66d5dbef | Guido Trotter | boot_disk = False
|
532 | eb58f9b1 | Guido Trotter | else:
|
533 | eb58f9b1 | Guido Trotter | boot_val = ''
|
534 | eb58f9b1 | Guido Trotter | |
535 | 19572932 | Iustin Pop | drive_val = 'file=%s,format=raw%s%s%s' % (dev_path, if_val, boot_val,
|
536 | 19572932 | Iustin Pop | cache_val) |
537 | eb58f9b1 | Guido Trotter | kvm_cmd.extend(['-drive', drive_val])
|
538 | eb58f9b1 | Guido Trotter | |
539 | a985b417 | Iustin Pop | iso_image = hvp[constants.HV_CDROM_IMAGE_PATH] |
540 | 66d5dbef | Guido Trotter | if iso_image:
|
541 | 9dd363eb | Guido Trotter | options = ',format=raw,media=cdrom'
|
542 | 66d5dbef | Guido Trotter | if boot_cdrom:
|
543 | 9dd363eb | Guido Trotter | kvm_cmd.extend(['-boot', 'd']) |
544 | 9cf4321f | Apollon Oikonomopoulos | if disk_type != constants.HT_DISK_IDE:
|
545 | 74a4c11b | Guido Trotter | options = '%s,boot=on' % options
|
546 | 9dd363eb | Guido Trotter | else:
|
547 | 9cf4321f | Apollon Oikonomopoulos | if disk_type == constants.HT_DISK_PARAVIRTUAL:
|
548 | 9cf4321f | Apollon Oikonomopoulos | if_val = ',if=virtio'
|
549 | 9cf4321f | Apollon Oikonomopoulos | else:
|
550 | 9cf4321f | Apollon Oikonomopoulos | if_val = ',if=%s' % disk_type
|
551 | 9cf4321f | Apollon Oikonomopoulos | options = '%s%s' % (options, if_val)
|
552 | 66d5dbef | Guido Trotter | drive_val = 'file=%s%s' % (iso_image, options)
|
553 | 66d5dbef | Guido Trotter | kvm_cmd.extend(['-drive', drive_val])
|
554 | 66d5dbef | Guido Trotter | |
555 | a985b417 | Iustin Pop | kernel_path = hvp[constants.HV_KERNEL_PATH] |
556 | df5ab9f0 | Guido Trotter | if kernel_path:
|
557 | df5ab9f0 | Guido Trotter | kvm_cmd.extend(['-kernel', kernel_path])
|
558 | a985b417 | Iustin Pop | initrd_path = hvp[constants.HV_INITRD_PATH] |
559 | df5ab9f0 | Guido Trotter | if initrd_path:
|
560 | df5ab9f0 | Guido Trotter | kvm_cmd.extend(['-initrd', initrd_path])
|
561 | 07813a9e | Iustin Pop | root_append = ['root=%s' % hvp[constants.HV_ROOT_PATH],
|
562 | 07813a9e | Iustin Pop | hvp[constants.HV_KERNEL_ARGS]] |
563 | 07813a9e | Iustin Pop | if hvp[constants.HV_SERIAL_CONSOLE]:
|
564 | 07813a9e | Iustin Pop | root_append.append('console=ttyS0,38400')
|
565 | 07813a9e | Iustin Pop | kvm_cmd.extend(['-append', ' '.join(root_append)]) |
566 | eb58f9b1 | Guido Trotter | |
567 | a985b417 | Iustin Pop | mouse_type = hvp[constants.HV_USB_MOUSE] |
568 | 11344a50 | Guido Trotter | if mouse_type:
|
569 | 11344a50 | Guido Trotter | kvm_cmd.extend(['-usb'])
|
570 | 11344a50 | Guido Trotter | kvm_cmd.extend(['-usbdevice', mouse_type])
|
571 | 11344a50 | Guido Trotter | |
572 | a985b417 | Iustin Pop | vnc_bind_address = hvp[constants.HV_VNC_BIND_ADDRESS] |
573 | 8470c8db | Guido Trotter | if vnc_bind_address:
|
574 | a744b676 | Manuel Franceschini | if netutils.IsValidIP4(vnc_bind_address):
|
575 | 377d74c9 | Guido Trotter | if instance.network_port > constants.VNC_BASE_PORT:
|
576 | 377d74c9 | Guido Trotter | display = instance.network_port - constants.VNC_BASE_PORT |
577 | 14f5f1b6 | Manuel Franceschini | if vnc_bind_address == constants.IP4_ADDRESS_ANY:
|
578 | 8447f52b | Guido Trotter | vnc_arg = ':%d' % (display)
|
579 | 8447f52b | Guido Trotter | else:
|
580 | 19498d6c | Guido Trotter | vnc_arg = '%s:%d' % (vnc_bind_address, display)
|
581 | 8470c8db | Guido Trotter | else:
|
582 | 8447f52b | Guido Trotter | logging.error("Network port is not a valid VNC display (%d < %d)."
|
583 | 07b8a2b5 | Iustin Pop | " Not starting VNC", instance.network_port,
|
584 | 07b8a2b5 | Iustin Pop | constants.VNC_BASE_PORT) |
585 | 8447f52b | Guido Trotter | vnc_arg = 'none'
|
586 | 8b2d1013 | Guido Trotter | |
587 | 8b2d1013 | Guido Trotter | # Only allow tls and other option when not binding to a file, for now.
|
588 | 8b2d1013 | Guido Trotter | # kvm/qemu gets confused otherwise about the filename to use.
|
589 | 8b2d1013 | Guido Trotter | vnc_append = ''
|
590 | a985b417 | Iustin Pop | if hvp[constants.HV_VNC_TLS]:
|
591 | 8b2d1013 | Guido Trotter | vnc_append = '%s,tls' % vnc_append
|
592 | a985b417 | Iustin Pop | if hvp[constants.HV_VNC_X509_VERIFY]:
|
593 | 8b2d1013 | Guido Trotter | vnc_append = '%s,x509verify=%s' % (vnc_append,
|
594 | a985b417 | Iustin Pop | hvp[constants.HV_VNC_X509]) |
595 | a985b417 | Iustin Pop | elif hvp[constants.HV_VNC_X509]:
|
596 | 8b2d1013 | Guido Trotter | vnc_append = '%s,x509=%s' % (vnc_append,
|
597 | a985b417 | Iustin Pop | hvp[constants.HV_VNC_X509]) |
598 | 6e6bb8d5 | Guido Trotter | if hvp[constants.HV_VNC_PASSWORD_FILE]:
|
599 | 6e6bb8d5 | Guido Trotter | vnc_append = '%s,password' % vnc_append
|
600 | 6e6bb8d5 | Guido Trotter | |
601 | 8b2d1013 | Guido Trotter | vnc_arg = '%s%s' % (vnc_arg, vnc_append)
|
602 | 8b2d1013 | Guido Trotter | |
603 | 8470c8db | Guido Trotter | else:
|
604 | 8b2d1013 | Guido Trotter | vnc_arg = 'unix:%s/%s.vnc' % (vnc_bind_address, instance.name)
|
605 | 8b2d1013 | Guido Trotter | |
606 | 8447f52b | Guido Trotter | kvm_cmd.extend(['-vnc', vnc_arg])
|
607 | 5b062a58 | Apollon Oikonomopoulos | |
608 | 5b062a58 | Apollon Oikonomopoulos | # Also add a tablet USB device to act as a mouse
|
609 | 5b062a58 | Apollon Oikonomopoulos | # This solves various mouse alignment issues
|
610 | 5b062a58 | Apollon Oikonomopoulos | kvm_cmd.extend(['-usbdevice', 'tablet']) |
611 | 8470c8db | Guido Trotter | else:
|
612 | 8470c8db | Guido Trotter | kvm_cmd.extend(['-nographic'])
|
613 | 8470c8db | Guido Trotter | |
614 | 69b99987 | Michael Hanselmann | monitor_dev = ("unix:%s,server,nowait" %
|
615 | 69b99987 | Michael Hanselmann | self._InstanceMonitor(instance.name))
|
616 | eb58f9b1 | Guido Trotter | kvm_cmd.extend(['-monitor', monitor_dev])
|
617 | a985b417 | Iustin Pop | if hvp[constants.HV_SERIAL_CONSOLE]:
|
618 | a985b417 | Iustin Pop | serial_dev = ('unix:%s,server,nowait' %
|
619 | a985b417 | Iustin Pop | self._InstanceSerial(instance.name))
|
620 | a2faf9ee | Guido Trotter | kvm_cmd.extend(['-serial', serial_dev])
|
621 | a2faf9ee | Guido Trotter | else:
|
622 | a2faf9ee | Guido Trotter | kvm_cmd.extend(['-serial', 'none']) |
623 | eb58f9b1 | Guido Trotter | |
624 | 6b970cef | Jun Futagawa | if hvp[constants.HV_USE_LOCALTIME]:
|
625 | 6b970cef | Jun Futagawa | kvm_cmd.extend(['-localtime'])
|
626 | 6b970cef | Jun Futagawa | |
627 | 547a63b7 | Balazs Lecz | if hvp[constants.HV_KVM_USE_CHROOT]:
|
628 | 547a63b7 | Balazs Lecz | kvm_cmd.extend(['-chroot', self._InstanceChrootDir(instance.name)]) |
629 | 547a63b7 | Balazs Lecz | |
630 | ee5f20b0 | Guido Trotter | # Save the current instance nics, but defer their expansion as parameters,
|
631 | ee5f20b0 | Guido Trotter | # as we'll need to generate executable temp files for them.
|
632 | ee5f20b0 | Guido Trotter | kvm_nics = instance.nics |
633 | a985b417 | Iustin Pop | hvparams = hvp |
634 | ee5f20b0 | Guido Trotter | |
635 | c2672466 | Guido Trotter | return (kvm_cmd, kvm_nics, hvparams)
|
636 | ee5f20b0 | Guido Trotter | |
637 | 38e250ba | Guido Trotter | def _WriteKVMRuntime(self, instance_name, data): |
638 | 38e250ba | Guido Trotter | """Write an instance's KVM runtime
|
639 | 38e250ba | Guido Trotter |
|
640 | 38e250ba | Guido Trotter | """
|
641 | 38e250ba | Guido Trotter | try:
|
642 | 38e250ba | Guido Trotter | utils.WriteFile(self._InstanceKVMRuntime(instance_name),
|
643 | 38e250ba | Guido Trotter | data=data) |
644 | 90c024f6 | Guido Trotter | except EnvironmentError, err: |
645 | 38e250ba | Guido Trotter | raise errors.HypervisorError("Failed to save KVM runtime file: %s" % err) |
646 | 38e250ba | Guido Trotter | |
647 | 38e250ba | Guido Trotter | def _ReadKVMRuntime(self, instance_name): |
648 | 38e250ba | Guido Trotter | """Read an instance's KVM runtime
|
649 | 38e250ba | Guido Trotter |
|
650 | 38e250ba | Guido Trotter | """
|
651 | 38e250ba | Guido Trotter | try:
|
652 | 38e250ba | Guido Trotter | file_content = utils.ReadFile(self._InstanceKVMRuntime(instance_name))
|
653 | 90c024f6 | Guido Trotter | except EnvironmentError, err: |
654 | 38e250ba | Guido Trotter | raise errors.HypervisorError("Failed to load KVM runtime file: %s" % err) |
655 | 38e250ba | Guido Trotter | return file_content
|
656 | 38e250ba | Guido Trotter | |
657 | 38e250ba | Guido Trotter | def _SaveKVMRuntime(self, instance, kvm_runtime): |
658 | 38e250ba | Guido Trotter | """Save an instance's KVM runtime
|
659 | 38e250ba | Guido Trotter |
|
660 | 38e250ba | Guido Trotter | """
|
661 | c2672466 | Guido Trotter | kvm_cmd, kvm_nics, hvparams = kvm_runtime |
662 | 38e250ba | Guido Trotter | serialized_nics = [nic.ToDict() for nic in kvm_nics] |
663 | c2672466 | Guido Trotter | serialized_form = serializer.Dump((kvm_cmd, serialized_nics, hvparams)) |
664 | 38e250ba | Guido Trotter | self._WriteKVMRuntime(instance.name, serialized_form)
|
665 | 38e250ba | Guido Trotter | |
666 | 30e42c4e | Guido Trotter | def _LoadKVMRuntime(self, instance, serialized_runtime=None): |
667 | 38e250ba | Guido Trotter | """Load an instance's KVM runtime
|
668 | 38e250ba | Guido Trotter |
|
669 | 38e250ba | Guido Trotter | """
|
670 | 30e42c4e | Guido Trotter | if not serialized_runtime: |
671 | 30e42c4e | Guido Trotter | serialized_runtime = self._ReadKVMRuntime(instance.name)
|
672 | 30e42c4e | Guido Trotter | loaded_runtime = serializer.Load(serialized_runtime) |
673 | c2672466 | Guido Trotter | kvm_cmd, serialized_nics, hvparams = loaded_runtime |
674 | 38e250ba | Guido Trotter | kvm_nics = [objects.NIC.FromDict(snic) for snic in serialized_nics] |
675 | c2672466 | Guido Trotter | return (kvm_cmd, kvm_nics, hvparams)
|
676 | 38e250ba | Guido Trotter | |
677 | 76431533 | Guido Trotter | def _RunKVMCmd(self, name, kvm_cmd): |
678 | 76431533 | Guido Trotter | """Run the KVM cmd and check for errors
|
679 | 76431533 | Guido Trotter |
|
680 | 76431533 | Guido Trotter | @type name: string
|
681 | 76431533 | Guido Trotter | @param name: instance name
|
682 | 76431533 | Guido Trotter | @type kvm_cmd: list of strings
|
683 | 76431533 | Guido Trotter | @param kvm_cmd: runcmd input for kvm
|
684 | 76431533 | Guido Trotter |
|
685 | 76431533 | Guido Trotter | """
|
686 | 76431533 | Guido Trotter | result = utils.RunCmd(kvm_cmd) |
687 | 76431533 | Guido Trotter | if result.failed:
|
688 | 76431533 | Guido Trotter | raise errors.HypervisorError("Failed to start instance %s: %s (%s)" % |
689 | 76431533 | Guido Trotter | (name, result.fail_reason, result.output)) |
690 | 76431533 | Guido Trotter | if not self._InstancePidAlive(name)[2]: |
691 | 76431533 | Guido Trotter | raise errors.HypervisorError("Failed to start instance %s" % name) |
692 | 76431533 | Guido Trotter | |
693 | 30e42c4e | Guido Trotter | def _ExecuteKVMRuntime(self, instance, kvm_runtime, incoming=None): |
694 | ee5f20b0 | Guido Trotter | """Execute a KVM cmd, after completing it with some last minute data
|
695 | ee5f20b0 | Guido Trotter |
|
696 | 30e42c4e | Guido Trotter | @type incoming: tuple of strings
|
697 | 30e42c4e | Guido Trotter | @param incoming: (target_host_ip, port)
|
698 | 30e42c4e | Guido Trotter |
|
699 | ee5f20b0 | Guido Trotter | """
|
700 | 297e6e53 | Guido Trotter | # Small _ExecuteKVMRuntime hv parameters programming howto:
|
701 | 297e6e53 | Guido Trotter | # - conf_hvp contains the parameters as configured on ganeti. they might
|
702 | 297e6e53 | Guido Trotter | # have changed since the instance started; only use them if the change
|
703 | 297e6e53 | Guido Trotter | # won't affect the inside of the instance (which hasn't been rebooted).
|
704 | 297e6e53 | Guido Trotter | # - up_hvp contains the parameters as they were when the instance was
|
705 | 297e6e53 | Guido Trotter | # started, plus any new parameter which has been added between ganeti
|
706 | 297e6e53 | Guido Trotter | # versions: it is paramount that those default to a value which won't
|
707 | 297e6e53 | Guido Trotter | # affect the inside of the instance as well.
|
708 | 297e6e53 | Guido Trotter | conf_hvp = instance.hvparams |
709 | 5905901c | Iustin Pop | name = instance.name |
710 | 5905901c | Iustin Pop | self._CheckDown(name)
|
711 | ee5f20b0 | Guido Trotter | |
712 | ee5f20b0 | Guido Trotter | temp_files = [] |
713 | ee5f20b0 | Guido Trotter | |
714 | 297e6e53 | Guido Trotter | kvm_cmd, kvm_nics, up_hvp = kvm_runtime |
715 | 297e6e53 | Guido Trotter | up_hvp = objects.FillDict(conf_hvp, up_hvp) |
716 | ee5f20b0 | Guido Trotter | |
717 | 297e6e53 | Guido Trotter | # We know it's safe to run as a different user upon migration, so we'll use
|
718 | 297e6e53 | Guido Trotter | # the latest conf, from conf_hvp.
|
719 | 297e6e53 | Guido Trotter | security_model = conf_hvp[constants.HV_SECURITY_MODEL] |
720 | cef34868 | Guido Trotter | if security_model == constants.HT_SM_USER:
|
721 | 297e6e53 | Guido Trotter | kvm_cmd.extend(["-runas", conf_hvp[constants.HV_SECURITY_DOMAIN]])
|
722 | cef34868 | Guido Trotter | |
723 | 297e6e53 | Guido Trotter | # We have reasons to believe changing something like the nic driver/type
|
724 | 297e6e53 | Guido Trotter | # upon migration won't exactly fly with the instance kernel, so for nic
|
725 | 297e6e53 | Guido Trotter | # related parameters we'll use up_hvp
|
726 | ee5f20b0 | Guido Trotter | if not kvm_nics: |
727 | fbe27e2b | Guido Trotter | kvm_cmd.extend(["-net", "none"]) |
728 | ee5f20b0 | Guido Trotter | else:
|
729 | fbe27e2b | Guido Trotter | tap_extra = ""
|
730 | 297e6e53 | Guido Trotter | nic_type = up_hvp[constants.HV_NIC_TYPE] |
731 | 37f88dc6 | Guido Trotter | if nic_type == constants.HT_NIC_PARAVIRTUAL:
|
732 | 37f88dc6 | Guido Trotter | nic_model = "model=virtio"
|
733 | 297e6e53 | Guido Trotter | if up_hvp[constants.HV_VHOST_NET]:
|
734 | fbe27e2b | Guido Trotter | tap_extra = ",vhost=on"
|
735 | 37f88dc6 | Guido Trotter | else:
|
736 | 37f88dc6 | Guido Trotter | nic_model = "model=%s" % nic_type
|
737 | 37f88dc6 | Guido Trotter | |
738 | ee5f20b0 | Guido Trotter | for nic_seq, nic in enumerate(kvm_nics): |
739 | 760570a8 | Timothy Kuhlman | nic_val = "nic,vlan=%s,macaddr=%s,%s" % (nic_seq, nic.mac, nic_model)
|
740 | 748e4b5a | Michael Hanselmann | script = self._WriteNetScriptFile(instance, nic_seq, nic)
|
741 | fbe27e2b | Guido Trotter | tap_val = "tap,vlan=%s,script=%s%s" % (nic_seq, script, tap_extra)
|
742 | fbe27e2b | Guido Trotter | kvm_cmd.extend(["-net", nic_val])
|
743 | fbe27e2b | Guido Trotter | kvm_cmd.extend(["-net", tap_val])
|
744 | ee5f20b0 | Guido Trotter | temp_files.append(script) |
745 | ee5f20b0 | Guido Trotter | |
746 | 30e42c4e | Guido Trotter | if incoming:
|
747 | 30e42c4e | Guido Trotter | target, port = incoming |
748 | 30e42c4e | Guido Trotter | kvm_cmd.extend(['-incoming', 'tcp:%s:%s' % (target, port)]) |
749 | 30e42c4e | Guido Trotter | |
750 | 297e6e53 | Guido Trotter | # Changing the vnc password doesn't bother the guest that much. At most it
|
751 | 297e6e53 | Guido Trotter | # will surprise people who connect to it. Whether positively or negatively
|
752 | 297e6e53 | Guido Trotter | # it's debatable.
|
753 | 297e6e53 | Guido Trotter | vnc_pwd_file = conf_hvp[constants.HV_VNC_PASSWORD_FILE] |
754 | 6e6bb8d5 | Guido Trotter | vnc_pwd = None
|
755 | 6e6bb8d5 | Guido Trotter | if vnc_pwd_file:
|
756 | 6e6bb8d5 | Guido Trotter | try:
|
757 | 682f7601 | Guido Trotter | vnc_pwd = utils.ReadOneLineFile(vnc_pwd_file, strict=True)
|
758 | 6e6bb8d5 | Guido Trotter | except EnvironmentError, err: |
759 | 6e6bb8d5 | Guido Trotter | raise errors.HypervisorError("Failed to open VNC password file %s: %s" |
760 | 6e6bb8d5 | Guido Trotter | % (vnc_pwd_file, err)) |
761 | 6e6bb8d5 | Guido Trotter | |
762 | 297e6e53 | Guido Trotter | if conf_hvp[constants.HV_KVM_USE_CHROOT]:
|
763 | 547a63b7 | Balazs Lecz | utils.EnsureDirs([(self._InstanceChrootDir(name),
|
764 | 547a63b7 | Balazs Lecz | constants.SECURE_DIR_MODE)]) |
765 | 547a63b7 | Balazs Lecz | |
766 | 76431533 | Guido Trotter | if security_model == constants.HT_SM_POOL:
|
767 | 76431533 | Guido Trotter | ss = ssconf.SimpleStore() |
768 | 76431533 | Guido Trotter | uid_pool = uidpool.ParseUidPool(ss.GetUidPool(), separator="\n")
|
769 | 76431533 | Guido Trotter | all_uids = set(uidpool.ExpandUidPool(uid_pool))
|
770 | 76431533 | Guido Trotter | uid = uidpool.RequestUnusedUid(all_uids) |
771 | 76431533 | Guido Trotter | try:
|
772 | 76431533 | Guido Trotter | username = pwd.getpwuid(uid.GetUid()).pw_name |
773 | 76431533 | Guido Trotter | kvm_cmd.extend(["-runas", username])
|
774 | 76431533 | Guido Trotter | self._RunKVMCmd(name, kvm_cmd)
|
775 | 76431533 | Guido Trotter | except:
|
776 | 76431533 | Guido Trotter | uidpool.ReleaseUid(uid) |
777 | 76431533 | Guido Trotter | raise
|
778 | 76431533 | Guido Trotter | else:
|
779 | 76431533 | Guido Trotter | uid.Unlock() |
780 | 76431533 | Guido Trotter | utils.WriteFile(self._InstanceUidFile(name), data=str(uid)) |
781 | 76431533 | Guido Trotter | else:
|
782 | 76431533 | Guido Trotter | self._RunKVMCmd(name, kvm_cmd)
|
783 | eb58f9b1 | Guido Trotter | |
784 | 6e6bb8d5 | Guido Trotter | if vnc_pwd:
|
785 | 6e6bb8d5 | Guido Trotter | change_cmd = 'change vnc password %s' % vnc_pwd
|
786 | 6e6bb8d5 | Guido Trotter | self._CallMonitorCommand(instance.name, change_cmd)
|
787 | 6e6bb8d5 | Guido Trotter | |
788 | 08137f9e | Iustin Pop | for filename in temp_files: |
789 | 08137f9e | Iustin Pop | utils.RemoveFile(filename) |
790 | eb58f9b1 | Guido Trotter | |
791 | 07813a9e | Iustin Pop | def StartInstance(self, instance, block_devices): |
792 | ee5f20b0 | Guido Trotter | """Start an instance.
|
793 | ee5f20b0 | Guido Trotter |
|
794 | ee5f20b0 | Guido Trotter | """
|
795 | 5905901c | Iustin Pop | self._CheckDown(instance.name)
|
796 | 07813a9e | Iustin Pop | kvm_runtime = self._GenerateKVMRuntime(instance, block_devices)
|
797 | 38e250ba | Guido Trotter | self._SaveKVMRuntime(instance, kvm_runtime)
|
798 | ee5f20b0 | Guido Trotter | self._ExecuteKVMRuntime(instance, kvm_runtime)
|
799 | ee5f20b0 | Guido Trotter | |
800 | 6567aff3 | Guido Trotter | def _CallMonitorCommand(self, instance_name, command): |
801 | 6567aff3 | Guido Trotter | """Invoke a command on the instance monitor.
|
802 | 6567aff3 | Guido Trotter |
|
803 | 6567aff3 | Guido Trotter | """
|
804 | 6567aff3 | Guido Trotter | socat = ("echo %s | %s STDIO UNIX-CONNECT:%s" %
|
805 | 6567aff3 | Guido Trotter | (utils.ShellQuote(command), |
806 | 6567aff3 | Guido Trotter | constants.SOCAT_PATH, |
807 | 6567aff3 | Guido Trotter | utils.ShellQuote(self._InstanceMonitor(instance_name))))
|
808 | 6567aff3 | Guido Trotter | result = utils.RunCmd(socat) |
809 | 6567aff3 | Guido Trotter | if result.failed:
|
810 | 6567aff3 | Guido Trotter | msg = ("Failed to send command '%s' to instance %s."
|
811 | 6567aff3 | Guido Trotter | " output: %s, error: %s, fail_reason: %s" %
|
812 | 9798fcae | Guido Trotter | (command, instance_name, |
813 | 9798fcae | Guido Trotter | result.stdout, result.stderr, result.fail_reason)) |
814 | 6567aff3 | Guido Trotter | raise errors.HypervisorError(msg)
|
815 | 6567aff3 | Guido Trotter | |
816 | 6567aff3 | Guido Trotter | return result
|
817 | 6567aff3 | Guido Trotter | |
818 | bbcf7ad0 | Iustin Pop | def StopInstance(self, instance, force=False, retry=False, name=None): |
819 | eb58f9b1 | Guido Trotter | """Stop an instance.
|
820 | eb58f9b1 | Guido Trotter |
|
821 | eb58f9b1 | Guido Trotter | """
|
822 | bbcf7ad0 | Iustin Pop | if name is not None and not force: |
823 | bbcf7ad0 | Iustin Pop | raise errors.HypervisorError("Cannot shutdown cleanly by name only") |
824 | bbcf7ad0 | Iustin Pop | if name is None: |
825 | bbcf7ad0 | Iustin Pop | name = instance.name |
826 | bbcf7ad0 | Iustin Pop | acpi = instance.hvparams[constants.HV_ACPI] |
827 | bbcf7ad0 | Iustin Pop | else:
|
828 | bbcf7ad0 | Iustin Pop | acpi = False
|
829 | 8904b35c | Guido Trotter | _, pid, alive = self._InstancePidAlive(name)
|
830 | 1f8b3a27 | Guido Trotter | if pid > 0 and alive: |
831 | bbcf7ad0 | Iustin Pop | if force or not acpi: |
832 | eb58f9b1 | Guido Trotter | utils.KillProcess(pid) |
833 | eb58f9b1 | Guido Trotter | else:
|
834 | bbcf7ad0 | Iustin Pop | self._CallMonitorCommand(name, 'system_powerdown') |
835 | eb58f9b1 | Guido Trotter | |
836 | 8904b35c | Guido Trotter | def CleanupInstance(self, instance_name): |
837 | 8904b35c | Guido Trotter | """Cleanup after a stopped instance
|
838 | 8904b35c | Guido Trotter |
|
839 | 8904b35c | Guido Trotter | """
|
840 | 8904b35c | Guido Trotter | pidfile, pid, alive = self._InstancePidAlive(instance_name)
|
841 | 8904b35c | Guido Trotter | if pid > 0 and alive: |
842 | 8904b35c | Guido Trotter | raise errors.HypervisorError("Cannot cleanup a live instance") |
843 | 8904b35c | Guido Trotter | self._RemoveInstanceRuntimeFiles(pidfile, instance_name)
|
844 | eb58f9b1 | Guido Trotter | |
845 | eb58f9b1 | Guido Trotter | def RebootInstance(self, instance): |
846 | eb58f9b1 | Guido Trotter | """Reboot an instance.
|
847 | eb58f9b1 | Guido Trotter |
|
848 | eb58f9b1 | Guido Trotter | """
|
849 | eb58f9b1 | Guido Trotter | # For some reason if we do a 'send-key ctrl-alt-delete' to the control
|
850 | eb58f9b1 | Guido Trotter | # socket the instance will stop, but now power up again. So we'll resort
|
851 | eb58f9b1 | Guido Trotter | # to shutdown and restart.
|
852 | 1122eb25 | Iustin Pop | _, _, alive = self._InstancePidAlive(instance.name)
|
853 | 1f8b3a27 | Guido Trotter | if not alive: |
854 | 78411c60 | Iustin Pop | raise errors.HypervisorError("Failed to reboot instance %s:" |
855 | 78411c60 | Iustin Pop | " not running" % instance.name)
|
856 | f02881e0 | Guido Trotter | # StopInstance will delete the saved KVM runtime so:
|
857 | f02881e0 | Guido Trotter | # ...first load it...
|
858 | f02881e0 | Guido Trotter | kvm_runtime = self._LoadKVMRuntime(instance)
|
859 | f02881e0 | Guido Trotter | # ...now we can safely call StopInstance...
|
860 | f02881e0 | Guido Trotter | if not self.StopInstance(instance): |
861 | f02881e0 | Guido Trotter | self.StopInstance(instance, force=True) |
862 | f02881e0 | Guido Trotter | # ...and finally we can save it again, and execute it...
|
863 | f02881e0 | Guido Trotter | self._SaveKVMRuntime(instance, kvm_runtime)
|
864 | f02881e0 | Guido Trotter | self._ExecuteKVMRuntime(instance, kvm_runtime)
|
865 | eb58f9b1 | Guido Trotter | |
866 | 30e42c4e | Guido Trotter | def MigrationInfo(self, instance): |
867 | 30e42c4e | Guido Trotter | """Get instance information to perform a migration.
|
868 | 30e42c4e | Guido Trotter |
|
869 | 30e42c4e | Guido Trotter | @type instance: L{objects.Instance}
|
870 | 30e42c4e | Guido Trotter | @param instance: instance to be migrated
|
871 | 30e42c4e | Guido Trotter | @rtype: string
|
872 | 30e42c4e | Guido Trotter | @return: content of the KVM runtime file
|
873 | 30e42c4e | Guido Trotter |
|
874 | 30e42c4e | Guido Trotter | """
|
875 | 30e42c4e | Guido Trotter | return self._ReadKVMRuntime(instance.name) |
876 | 30e42c4e | Guido Trotter | |
877 | 30e42c4e | Guido Trotter | def AcceptInstance(self, instance, info, target): |
878 | 30e42c4e | Guido Trotter | """Prepare to accept an instance.
|
879 | 30e42c4e | Guido Trotter |
|
880 | 30e42c4e | Guido Trotter | @type instance: L{objects.Instance}
|
881 | 30e42c4e | Guido Trotter | @param instance: instance to be accepted
|
882 | 30e42c4e | Guido Trotter | @type info: string
|
883 | 30e42c4e | Guido Trotter | @param info: content of the KVM runtime file on the source node
|
884 | 30e42c4e | Guido Trotter | @type target: string
|
885 | 30e42c4e | Guido Trotter | @param target: target host (usually ip), on this node
|
886 | 30e42c4e | Guido Trotter |
|
887 | 30e42c4e | Guido Trotter | """
|
888 | 30e42c4e | Guido Trotter | kvm_runtime = self._LoadKVMRuntime(instance, serialized_runtime=info)
|
889 | 641ae041 | Iustin Pop | incoming_address = (target, instance.hvparams[constants.HV_MIGRATION_PORT]) |
890 | 30e42c4e | Guido Trotter | self._ExecuteKVMRuntime(instance, kvm_runtime, incoming=incoming_address)
|
891 | 30e42c4e | Guido Trotter | |
892 | 30e42c4e | Guido Trotter | def FinalizeMigration(self, instance, info, success): |
893 | 30e42c4e | Guido Trotter | """Finalize an instance migration.
|
894 | 30e42c4e | Guido Trotter |
|
895 | 30e42c4e | Guido Trotter | Stop the incoming mode KVM.
|
896 | 30e42c4e | Guido Trotter |
|
897 | 30e42c4e | Guido Trotter | @type instance: L{objects.Instance}
|
898 | fea922fa | Guido Trotter | @param instance: instance whose migration is being finalized
|
899 | 30e42c4e | Guido Trotter |
|
900 | 30e42c4e | Guido Trotter | """
|
901 | 30e42c4e | Guido Trotter | if success:
|
902 | 30e42c4e | Guido Trotter | self._WriteKVMRuntime(instance.name, info)
|
903 | 30e42c4e | Guido Trotter | else:
|
904 | 30e42c4e | Guido Trotter | self.StopInstance(instance, force=True) |
905 | 30e42c4e | Guido Trotter | |
906 | 58d38b02 | Iustin Pop | def MigrateInstance(self, instance, target, live): |
907 | 30e42c4e | Guido Trotter | """Migrate an instance to a target node.
|
908 | 30e42c4e | Guido Trotter |
|
909 | 30e42c4e | Guido Trotter | The migration will not be attempted if the instance is not
|
910 | 30e42c4e | Guido Trotter | currently running.
|
911 | 30e42c4e | Guido Trotter |
|
912 | 58d38b02 | Iustin Pop | @type instance: L{objects.Instance}
|
913 | 58d38b02 | Iustin Pop | @param instance: the instance to be migrated
|
914 | 30e42c4e | Guido Trotter | @type target: string
|
915 | 30e42c4e | Guido Trotter | @param target: ip address of the target node
|
916 | 30e42c4e | Guido Trotter | @type live: boolean
|
917 | 30e42c4e | Guido Trotter | @param live: perform a live migration
|
918 | 30e42c4e | Guido Trotter |
|
919 | 30e42c4e | Guido Trotter | """
|
920 | 58d38b02 | Iustin Pop | instance_name = instance.name |
921 | 50716be0 | Iustin Pop | port = instance.hvparams[constants.HV_MIGRATION_PORT] |
922 | 30e42c4e | Guido Trotter | pidfile, pid, alive = self._InstancePidAlive(instance_name)
|
923 | 30e42c4e | Guido Trotter | if not alive: |
924 | 30e42c4e | Guido Trotter | raise errors.HypervisorError("Instance not running, cannot migrate") |
925 | 30e42c4e | Guido Trotter | |
926 | a744b676 | Manuel Franceschini | if not netutils.TcpPing(target, port, live_port_needed=True): |
927 | 50716be0 | Iustin Pop | raise errors.HypervisorError("Remote host %s not listening on port" |
928 | 50716be0 | Iustin Pop | " %s, cannot migrate" % (target, port))
|
929 | 50716be0 | Iustin Pop | |
930 | 30e42c4e | Guido Trotter | if not live: |
931 | 30e42c4e | Guido Trotter | self._CallMonitorCommand(instance_name, 'stop') |
932 | 30e42c4e | Guido Trotter | |
933 | e43d4f9f | Apollon Oikonomopoulos | migrate_command = ('migrate_set_speed %dm' %
|
934 | e43d4f9f | Apollon Oikonomopoulos | instance.hvparams[constants.HV_MIGRATION_BANDWIDTH]) |
935 | e43d4f9f | Apollon Oikonomopoulos | self._CallMonitorCommand(instance_name, migrate_command)
|
936 | e43d4f9f | Apollon Oikonomopoulos | |
937 | e43d4f9f | Apollon Oikonomopoulos | migrate_command = ('migrate_set_downtime %dms' %
|
938 | e43d4f9f | Apollon Oikonomopoulos | instance.hvparams[constants.HV_MIGRATION_DOWNTIME]) |
939 | e43d4f9f | Apollon Oikonomopoulos | self._CallMonitorCommand(instance_name, migrate_command)
|
940 | e43d4f9f | Apollon Oikonomopoulos | |
941 | 641ae041 | Iustin Pop | migrate_command = 'migrate -d tcp:%s:%s' % (target, port)
|
942 | 30e42c4e | Guido Trotter | self._CallMonitorCommand(instance_name, migrate_command)
|
943 | 30e42c4e | Guido Trotter | |
944 | 30e42c4e | Guido Trotter | info_command = 'info migrate'
|
945 | 30e42c4e | Guido Trotter | done = False
|
946 | c4e388a5 | Guido Trotter | broken_answers = 0
|
947 | 30e42c4e | Guido Trotter | while not done: |
948 | 30e42c4e | Guido Trotter | result = self._CallMonitorCommand(instance_name, info_command)
|
949 | 30e42c4e | Guido Trotter | match = self._MIGRATION_STATUS_RE.search(result.stdout)
|
950 | 30e42c4e | Guido Trotter | if not match: |
951 | c4e388a5 | Guido Trotter | broken_answers += 1
|
952 | c4e388a5 | Guido Trotter | if not result.stdout: |
953 | c4e388a5 | Guido Trotter | logging.info("KVM: empty 'info migrate' result")
|
954 | c4e388a5 | Guido Trotter | else:
|
955 | e4dd2299 | Guido Trotter | logging.warning("KVM: unknown 'info migrate' result: %s",
|
956 | c4e388a5 | Guido Trotter | result.stdout) |
957 | c4e388a5 | Guido Trotter | time.sleep(self._MIGRATION_INFO_RETRY_DELAY)
|
958 | 30e42c4e | Guido Trotter | else:
|
959 | 30e42c4e | Guido Trotter | status = match.group(1)
|
960 | 30e42c4e | Guido Trotter | if status == 'completed': |
961 | 30e42c4e | Guido Trotter | done = True
|
962 | 30e42c4e | Guido Trotter | elif status == 'active': |
963 | c4e388a5 | Guido Trotter | # reset the broken answers count
|
964 | c4e388a5 | Guido Trotter | broken_answers = 0
|
965 | c4e388a5 | Guido Trotter | time.sleep(self._MIGRATION_INFO_RETRY_DELAY)
|
966 | c087266c | Guido Trotter | elif status == 'failed' or status == 'cancelled': |
967 | c087266c | Guido Trotter | if not live: |
968 | c087266c | Guido Trotter | self._CallMonitorCommand(instance_name, 'cont') |
969 | c087266c | Guido Trotter | raise errors.HypervisorError("Migration %s at the kvm level" % |
970 | c087266c | Guido Trotter | status) |
971 | 30e42c4e | Guido Trotter | else:
|
972 | c4e388a5 | Guido Trotter | logging.warning("KVM: unknown migration status '%s'", status)
|
973 | c4e388a5 | Guido Trotter | broken_answers += 1
|
974 | c4e388a5 | Guido Trotter | time.sleep(self._MIGRATION_INFO_RETRY_DELAY)
|
975 | c4e388a5 | Guido Trotter | if broken_answers >= self._MIGRATION_INFO_MAX_BAD_ANSWERS: |
976 | c4e388a5 | Guido Trotter | raise errors.HypervisorError("Too many 'info migrate' broken answers") |
977 | 30e42c4e | Guido Trotter | |
978 | 30e42c4e | Guido Trotter | utils.KillProcess(pid) |
979 | 7b381438 | Guido Trotter | self._RemoveInstanceRuntimeFiles(pidfile, instance_name)
|
980 | 30e42c4e | Guido Trotter | |
981 | eb58f9b1 | Guido Trotter | def GetNodeInfo(self): |
982 | eb58f9b1 | Guido Trotter | """Return information about the node.
|
983 | eb58f9b1 | Guido Trotter |
|
984 | 572e52bf | Iustin Pop | This is just a wrapper over the base GetLinuxNodeInfo method.
|
985 | 572e52bf | Iustin Pop |
|
986 | c41eea6e | Iustin Pop | @return: a dict with the following keys (values in MiB):
|
987 | c41eea6e | Iustin Pop | - memory_total: the total memory size on the node
|
988 | c41eea6e | Iustin Pop | - memory_free: the available memory on the node for instances
|
989 | c41eea6e | Iustin Pop | - memory_dom0: the memory used by the node itself, if available
|
990 | eb58f9b1 | Guido Trotter |
|
991 | eb58f9b1 | Guido Trotter | """
|
992 | 572e52bf | Iustin Pop | return self.GetLinuxNodeInfo() |
993 | eb58f9b1 | Guido Trotter | |
994 | 637ce7f9 | Guido Trotter | @classmethod
|
995 | 5431b2e4 | Guido Trotter | def GetShellCommandForConsole(cls, instance, hvparams, beparams): |
996 | eb58f9b1 | Guido Trotter | """Return a command for connecting to the console of an instance.
|
997 | eb58f9b1 | Guido Trotter |
|
998 | eb58f9b1 | Guido Trotter | """
|
999 | a2faf9ee | Guido Trotter | if hvparams[constants.HV_SERIAL_CONSOLE]:
|
1000 | 86d6bc2a | Guido Trotter | shell_command = ("%s STDIO,%s UNIX-CONNECT:%s" %
|
1001 | 86d6bc2a | Guido Trotter | (constants.SOCAT_PATH, cls._SocatUnixConsoleParams(), |
1002 | a2faf9ee | Guido Trotter | utils.ShellQuote(cls._InstanceSerial(instance.name)))) |
1003 | a2faf9ee | Guido Trotter | else:
|
1004 | a2faf9ee | Guido Trotter | shell_command = "echo 'No serial shell for instance %s'" % instance.name
|
1005 | 3be34f57 | Guido Trotter | |
1006 | 3be34f57 | Guido Trotter | vnc_bind_address = hvparams[constants.HV_VNC_BIND_ADDRESS] |
1007 | 3be34f57 | Guido Trotter | if vnc_bind_address:
|
1008 | 377d74c9 | Guido Trotter | if instance.network_port > constants.VNC_BASE_PORT:
|
1009 | 377d74c9 | Guido Trotter | display = instance.network_port - constants.VNC_BASE_PORT |
1010 | 3be34f57 | Guido Trotter | vnc_command = ("echo 'Instance has VNC listening on %s:%d"
|
1011 | 3be34f57 | Guido Trotter | " (display: %d)'" % (vnc_bind_address,
|
1012 | 3be34f57 | Guido Trotter | instance.network_port, |
1013 | 3be34f57 | Guido Trotter | display)) |
1014 | 3be34f57 | Guido Trotter | shell_command = "%s; %s" % (vnc_command, shell_command)
|
1015 | 3be34f57 | Guido Trotter | |
1016 | a2faf9ee | Guido Trotter | return shell_command
|
1017 | eb58f9b1 | Guido Trotter | |
1018 | eb58f9b1 | Guido Trotter | def Verify(self): |
1019 | eb58f9b1 | Guido Trotter | """Verify the hypervisor.
|
1020 | eb58f9b1 | Guido Trotter |
|
1021 | eb58f9b1 | Guido Trotter | Check that the binary exists.
|
1022 | eb58f9b1 | Guido Trotter |
|
1023 | eb58f9b1 | Guido Trotter | """
|
1024 | eb58f9b1 | Guido Trotter | if not os.path.exists(constants.KVM_PATH): |
1025 | eb58f9b1 | Guido Trotter | return "The kvm binary ('%s') does not exist." % constants.KVM_PATH |
1026 | 14aa53cb | Guido Trotter | if not os.path.exists(constants.SOCAT_PATH): |
1027 | 14aa53cb | Guido Trotter | return "The socat binary ('%s') does not exist." % constants.SOCAT_PATH |
1028 | 14aa53cb | Guido Trotter | |
1029 | 6b5605e8 | Iustin Pop | |
1030 | 6b5605e8 | Iustin Pop | @classmethod
|
1031 | 6b5605e8 | Iustin Pop | def CheckParameterSyntax(cls, hvparams): |
1032 | 6b5605e8 | Iustin Pop | """Check the given parameters for validity.
|
1033 | 6b5605e8 | Iustin Pop |
|
1034 | 6b5605e8 | Iustin Pop | @type hvparams: dict
|
1035 | 6b5605e8 | Iustin Pop | @param hvparams: dictionary with parameter names/value
|
1036 | 6b5605e8 | Iustin Pop | @raise errors.HypervisorError: when a parameter is not valid
|
1037 | 6b5605e8 | Iustin Pop |
|
1038 | 6b5605e8 | Iustin Pop | """
|
1039 | 47387b1e | Guido Trotter | super(KVMHypervisor, cls).CheckParameterSyntax(hvparams)
|
1040 | 6b5605e8 | Iustin Pop | |
1041 | df5ab9f0 | Guido Trotter | kernel_path = hvparams[constants.HV_KERNEL_PATH] |
1042 | df5ab9f0 | Guido Trotter | if kernel_path:
|
1043 | df5ab9f0 | Guido Trotter | if not hvparams[constants.HV_ROOT_PATH]: |
1044 | 205ab586 | Iustin Pop | raise errors.HypervisorError("Need a root partition for the instance," |
1045 | 205ab586 | Iustin Pop | " if a kernel is defined")
|
1046 | 6b5605e8 | Iustin Pop | |
1047 | 205ab586 | Iustin Pop | if (hvparams[constants.HV_VNC_X509_VERIFY] and |
1048 | 205ab586 | Iustin Pop | not hvparams[constants.HV_VNC_X509]):
|
1049 | 205ab586 | Iustin Pop | raise errors.HypervisorError("%s must be defined, if %s is" % |
1050 | 205ab586 | Iustin Pop | (constants.HV_VNC_X509, |
1051 | 205ab586 | Iustin Pop | constants.HV_VNC_X509_VERIFY)) |
1052 | 66d5dbef | Guido Trotter | |
1053 | 66d5dbef | Guido Trotter | boot_order = hvparams[constants.HV_BOOT_ORDER] |
1054 | 205ab586 | Iustin Pop | if (boot_order == constants.HT_BO_CDROM and |
1055 | 205ab586 | Iustin Pop | not hvparams[constants.HV_CDROM_IMAGE_PATH]):
|
1056 | 835528af | Iustin Pop | raise errors.HypervisorError("Cannot boot from cdrom without an" |
1057 | 835528af | Iustin Pop | " ISO path")
|
1058 | f5118ade | Iustin Pop | |
1059 | d19d94db | Guido Trotter | security_model = hvparams[constants.HV_SECURITY_MODEL] |
1060 | d19d94db | Guido Trotter | if security_model == constants.HT_SM_USER:
|
1061 | d19d94db | Guido Trotter | if not hvparams[constants.HV_SECURITY_DOMAIN]: |
1062 | d19d94db | Guido Trotter | raise errors.HypervisorError("A security domain (user to run kvm as)" |
1063 | d19d94db | Guido Trotter | " must be specified")
|
1064 | d19d94db | Guido Trotter | elif (security_model == constants.HT_SM_NONE or |
1065 | d19d94db | Guido Trotter | security_model == constants.HT_SM_POOL): |
1066 | d19d94db | Guido Trotter | if hvparams[constants.HV_SECURITY_DOMAIN]:
|
1067 | d19d94db | Guido Trotter | raise errors.HypervisorError("Cannot have a security domain when the" |
1068 | d19d94db | Guido Trotter | " security model is 'none' or 'pool'")
|
1069 | d19d94db | Guido Trotter | |
1070 | d19d94db | Guido Trotter | @classmethod
|
1071 | d19d94db | Guido Trotter | def ValidateParameters(cls, hvparams): |
1072 | d19d94db | Guido Trotter | """Check the given parameters for validity.
|
1073 | d19d94db | Guido Trotter |
|
1074 | d19d94db | Guido Trotter | @type hvparams: dict
|
1075 | d19d94db | Guido Trotter | @param hvparams: dictionary with parameter names/value
|
1076 | d19d94db | Guido Trotter | @raise errors.HypervisorError: when a parameter is not valid
|
1077 | d19d94db | Guido Trotter |
|
1078 | d19d94db | Guido Trotter | """
|
1079 | d19d94db | Guido Trotter | super(KVMHypervisor, cls).ValidateParameters(hvparams)
|
1080 | d19d94db | Guido Trotter | |
1081 | d19d94db | Guido Trotter | security_model = hvparams[constants.HV_SECURITY_MODEL] |
1082 | d19d94db | Guido Trotter | if security_model == constants.HT_SM_USER:
|
1083 | d19d94db | Guido Trotter | username = hvparams[constants.HV_SECURITY_DOMAIN] |
1084 | d19d94db | Guido Trotter | try:
|
1085 | 1feb39ec | Guido Trotter | pwd.getpwnam(username) |
1086 | d19d94db | Guido Trotter | except KeyError: |
1087 | d19d94db | Guido Trotter | raise errors.HypervisorError("Unknown security domain user %s" |
1088 | d19d94db | Guido Trotter | % username) |
1089 | d19d94db | Guido Trotter | |
1090 | f5118ade | Iustin Pop | @classmethod
|
1091 | f5118ade | Iustin Pop | def PowercycleNode(cls): |
1092 | f5118ade | Iustin Pop | """KVM powercycle, just a wrapper over Linux powercycle.
|
1093 | f5118ade | Iustin Pop |
|
1094 | f5118ade | Iustin Pop | """
|
1095 | f5118ade | Iustin Pop | cls.LinuxPowercycle() |