root / scripts / gnt-cluster @ 79f7be7b
History | View | Annotate | Download (7.7 kB)
1 |
#!/usr/bin/python |
---|---|
2 |
# |
3 |
|
4 |
# Copyright (C) 2006, 2007 Google Inc. |
5 |
# |
6 |
# This program is free software; you can redistribute it and/or modify |
7 |
# it under the terms of the GNU General Public License as published by |
8 |
# the Free Software Foundation; either version 2 of the License, or |
9 |
# (at your option) any later version. |
10 |
# |
11 |
# This program is distributed in the hope that it will be useful, but |
12 |
# WITHOUT ANY WARRANTY; without even the implied warranty of |
13 |
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
14 |
# General Public License for more details. |
15 |
# |
16 |
# You should have received a copy of the GNU General Public License |
17 |
# along with this program; if not, write to the Free Software |
18 |
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
19 |
# 02110-1301, USA. |
20 |
|
21 |
|
22 |
import sys |
23 |
from optparse import make_option |
24 |
import pprint |
25 |
|
26 |
from ganeti.cli import * |
27 |
from ganeti import opcodes |
28 |
|
29 |
|
30 |
def InitCluster(opts, args): |
31 |
"""Initialize the cluster. |
32 |
|
33 |
Args: |
34 |
opts - class with options as members |
35 |
args - list of arguments, expected to be [clustername] |
36 |
|
37 |
""" |
38 |
op = opcodes.OpInitCluster(cluster_name=args[0], |
39 |
secondary_ip=opts.secondary_ip, |
40 |
hypervisor_type=opts.hypervisor_type, |
41 |
vg_name=opts.vg_name, |
42 |
mac_prefix=opts.mac_prefix, |
43 |
def_bridge=opts.def_bridge) |
44 |
SubmitOpCode(op) |
45 |
return 0 |
46 |
|
47 |
|
48 |
def DestroyCluster(opts, args): |
49 |
"""Destroy the cluster. |
50 |
|
51 |
Args: |
52 |
opts - class with options as members |
53 |
""" |
54 |
if not opts.yes_do_it: |
55 |
print ("Destroying a cluster is irreversibly. If you really want destroy" |
56 |
" this cluster, supply the --yes-do-it option.") |
57 |
return 1 |
58 |
|
59 |
op = opcodes.OpDestroyCluster() |
60 |
SubmitOpCode(op) |
61 |
return 0 |
62 |
|
63 |
|
64 |
def ShowClusterVersion(opts, args): |
65 |
"""Write version of ganeti software to the standard output. |
66 |
|
67 |
Args: |
68 |
opts - class with options as members |
69 |
|
70 |
""" |
71 |
op = opcodes.OpQueryClusterInfo() |
72 |
result = SubmitOpCode(op) |
73 |
print ("Software version: %s" % result["software_version"]) |
74 |
print ("Internode protocol: %s" % result["protocol_version"]) |
75 |
print ("Configuration format: %s" % result["config_version"]) |
76 |
print ("OS api version: %s" % result["os_api_version"]) |
77 |
print ("Export interface: %s" % result["export_version"]) |
78 |
return 0 |
79 |
|
80 |
|
81 |
def ShowClusterMaster(opts, args): |
82 |
"""Write name of master node to the standard output. |
83 |
|
84 |
Args: |
85 |
opts - class with options as members |
86 |
|
87 |
""" |
88 |
op = opcodes.OpQueryClusterInfo() |
89 |
result = SubmitOpCode(op) |
90 |
print (result["master"]) |
91 |
return 0 |
92 |
|
93 |
|
94 |
def ShowClusterConfig(opts, args): |
95 |
"""Shows cluster information. |
96 |
|
97 |
""" |
98 |
op = opcodes.OpQueryClusterInfo() |
99 |
result = SubmitOpCode(op) |
100 |
|
101 |
print ("Cluster name: %s" % result["name"]) |
102 |
|
103 |
print ("Architecture: %s (%s)" % |
104 |
(result["architecture"][0], result["architecture"][1])) |
105 |
|
106 |
print ("Master node: %s" % result["master"]) |
107 |
|
108 |
print ("Instances:") |
109 |
for name, node in result["instances"]: |
110 |
print (" - %s (on %s)" % (name, node)) |
111 |
print ("Nodes:") |
112 |
for name in result["nodes"]: |
113 |
print (" - %s" % name) |
114 |
|
115 |
return 0 |
116 |
|
117 |
|
118 |
def ClusterCopyFile(opts, args): |
119 |
"""Copy a file from master to some nodes. |
120 |
|
121 |
Args: |
122 |
opts - class with options as members |
123 |
args - list containing a single element, the file name |
124 |
Opts used: |
125 |
nodes - list containing the name of target nodes; if empty, all nodes |
126 |
|
127 |
""" |
128 |
op = opcodes.OpClusterCopyFile(filename=args[0], nodes=opts.nodes) |
129 |
SubmitOpCode(op) |
130 |
return 0 |
131 |
|
132 |
|
133 |
def RunClusterCommand(opts, args): |
134 |
"""Run a command on some nodes. |
135 |
|
136 |
Args: |
137 |
opts - class with options as members |
138 |
args - the command list as a list |
139 |
Opts used: |
140 |
nodes: list containing the name of target nodes; if empty, all nodes |
141 |
|
142 |
""" |
143 |
command = " ".join(args) |
144 |
nodes = opts.nodes |
145 |
op = opcodes.OpRunClusterCommand(command=command, nodes=nodes) |
146 |
result = SubmitOpCode(op) |
147 |
for node, sshcommand, output, exit_code in result: |
148 |
print ("------------------------------------------------") |
149 |
print ("node: %s" % node) |
150 |
print ("command: %s" % sshcommand) |
151 |
print ("%s" % output) |
152 |
print ("return code = %s" % exit_code) |
153 |
|
154 |
|
155 |
def VerifyCluster(opts, args): |
156 |
"""Verify integrity of cluster, performing various test on nodes. |
157 |
|
158 |
Args: |
159 |
opts - class with options as members |
160 |
|
161 |
""" |
162 |
op = opcodes.OpVerifyCluster() |
163 |
result = SubmitOpCode(op) |
164 |
return result |
165 |
|
166 |
|
167 |
def MasterFailover(opts, args): |
168 |
"""Failover the master node. |
169 |
|
170 |
This command, when run on a non-master node, will cause the current |
171 |
master to cease being master, and the non-master to become new |
172 |
master. |
173 |
|
174 |
""" |
175 |
op = opcodes.OpMasterFailover() |
176 |
SubmitOpCode(op) |
177 |
|
178 |
|
179 |
# this is an option common to more than one command, so we declare |
180 |
# it here and reuse it |
181 |
node_option = make_option("-n", "--node", action="append", dest="nodes", |
182 |
help="Node to copy to (if not given, all nodes)" |
183 |
", can be given multiple times", metavar="<node>", |
184 |
default=[]) |
185 |
|
186 |
commands = { |
187 |
'init': (InitCluster, ARGS_ONE, |
188 |
[DEBUG_OPT, |
189 |
make_option("-s", "--secondary-ip", dest="secondary_ip", |
190 |
help="Specify the secondary ip for this node;" |
191 |
" if given, the entire cluster must have secondary" |
192 |
" addresses", |
193 |
metavar="ADDRESS", default=None), |
194 |
make_option("-t", "--hypervisor-type", dest="hypervisor_type", |
195 |
help="Specify the hypervisor type (xen-3.0, fake)", |
196 |
metavar="TYPE", choices=["xen-3.0", "fake"], |
197 |
default="xen-3.0",), |
198 |
make_option("-m", "--mac-prefix", dest="mac_prefix", |
199 |
help="Specify the mac prefix for the instance IP" |
200 |
" addresses, in the format XX:XX:XX", |
201 |
metavar="PREFIX", |
202 |
default="aa:00:00",), |
203 |
make_option("-g", "--vg-name", dest="vg_name", |
204 |
help="Specify the volume group name " |
205 |
" (cluster-wide) for disk allocation [xenvg]", |
206 |
metavar="VG", |
207 |
default="xenvg",), |
208 |
make_option("-b", "--bridge", dest="def_bridge", |
209 |
help="Specify the default bridge name (cluster-wide)" |
210 |
" to connect the instances to [xen-br0]", |
211 |
metavar="BRIDGE", |
212 |
default="xen-br0",), |
213 |
], |
214 |
"[opts...] <cluster_name>", |
215 |
"Initialises a new cluster configuration"), |
216 |
'destroy': (DestroyCluster, ARGS_NONE, |
217 |
[DEBUG_OPT, |
218 |
make_option("--yes-do-it", dest="yes_do_it", |
219 |
help="Destroy cluster", |
220 |
action="store_true"), |
221 |
], |
222 |
"", "Destroy cluster"), |
223 |
'verify': (VerifyCluster, ARGS_NONE, [DEBUG_OPT], |
224 |
"", "Does a check on the cluster configuration"), |
225 |
'masterfailover': (MasterFailover, ARGS_NONE, [DEBUG_OPT], |
226 |
"", "Makes the current node the master"), |
227 |
'version': (ShowClusterVersion, ARGS_NONE, [DEBUG_OPT], |
228 |
"", "Shows the cluster version"), |
229 |
'getmaster': (ShowClusterMaster, ARGS_NONE, [DEBUG_OPT], |
230 |
"", "Shows the cluster master"), |
231 |
'copyfile': (ClusterCopyFile, ARGS_ONE, [DEBUG_OPT, node_option], |
232 |
"[-n node...] <filename>", |
233 |
"Copies a file to all (or only some) nodes"), |
234 |
'command': (RunClusterCommand, ARGS_ATLEAST(1), [DEBUG_OPT, node_option], |
235 |
"[-n node...] <command>", |
236 |
"Runs a command on all (or only some) nodes"), |
237 |
'info': (ShowClusterConfig, ARGS_NONE, [DEBUG_OPT], |
238 |
"", "Show cluster configuration"), |
239 |
} |
240 |
|
241 |
if __name__ == '__main__': |
242 |
retcode = GenericMain(commands) |
243 |
sys.exit(retcode) |