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#!/usr/bin/python |
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# |
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|
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# Copyright (C) 2006, 2007 Google Inc. |
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# |
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# This program is free software; you can redistribute it and/or modify |
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# it under the terms of the GNU General Public License as published by |
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# the Free Software Foundation; either version 2 of the License, or |
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# (at your option) any later version. |
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# |
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# This program is distributed in the hope that it will be useful, but |
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# WITHOUT ANY WARRANTY; without even the implied warranty of |
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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# General Public License for more details. |
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# |
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# You should have received a copy of the GNU General Public License |
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# along with this program; if not, write to the Free Software |
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
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# 02110-1301, USA. |
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|
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|
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import sys |
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from optparse import make_option |
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import pprint |
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import os.path |
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|
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from ganeti.cli import * |
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from ganeti import opcodes |
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from ganeti import constants |
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from ganeti import errors |
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from ganeti import utils |
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from ganeti import bootstrap |
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from ganeti import ssh |
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from ganeti import ssconf |
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|
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|
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def InitCluster(opts, args): |
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"""Initialize the cluster. |
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|
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Args: |
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opts - class with options as members |
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args - list of arguments, expected to be [clustername] |
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|
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""" |
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if not opts.lvm_storage and opts.vg_name: |
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print ("Options --no-lvm-storage and --vg-name conflict.") |
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return 1 |
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|
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vg_name = opts.vg_name |
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if opts.lvm_storage and not opts.vg_name: |
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vg_name = constants.DEFAULT_VG |
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|
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bootstrap.InitCluster(cluster_name=args[0], |
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secondary_ip=opts.secondary_ip, |
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hypervisor_type=opts.hypervisor_type, |
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vg_name=vg_name, |
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mac_prefix=opts.mac_prefix, |
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def_bridge=opts.def_bridge, |
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master_netdev=opts.master_netdev, |
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file_storage_dir=opts.file_storage_dir) |
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return 0 |
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|
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|
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def DestroyCluster(opts, args): |
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"""Destroy the cluster. |
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|
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Args: |
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opts - class with options as members |
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|
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""" |
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if not opts.yes_do_it: |
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print ("Destroying a cluster is irreversibly. If you really want destroy" |
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" this cluster, supply the --yes-do-it option.") |
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return 1 |
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|
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op = opcodes.OpDestroyCluster() |
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master = SubmitOpCode(op) |
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# if we reached this, the opcode didn't fail; we can proceed to |
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# shutdown all the daemons |
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bootstrap.FinalizeClusterDestroy(master) |
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return 0 |
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|
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|
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def RenameCluster(opts, args): |
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"""Rename the cluster. |
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|
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Args: |
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opts - class with options as members, we use force only |
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args - list of arguments, expected to be [new_name] |
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|
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""" |
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name = args[0] |
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if not opts.force: |
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usertext = ("This will rename the cluster to '%s'. If you are connected" |
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" over the network to the cluster name, the operation is very" |
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" dangerous as the IP address will be removed from the node" |
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" and the change may not go through. Continue?") % name |
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if not AskUser(usertext): |
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return 1 |
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|
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op = opcodes.OpRenameCluster(name=name) |
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SubmitOpCode(op) |
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return 0 |
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|
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|
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def ShowClusterVersion(opts, args): |
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"""Write version of ganeti software to the standard output. |
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|
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Args: |
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opts - class with options as members |
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|
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""" |
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op = opcodes.OpQueryClusterInfo() |
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result = SubmitOpCode(op) |
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print ("Software version: %s" % result["software_version"]) |
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print ("Internode protocol: %s" % result["protocol_version"]) |
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print ("Configuration format: %s" % result["config_version"]) |
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print ("OS api version: %s" % result["os_api_version"]) |
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print ("Export interface: %s" % result["export_version"]) |
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return 0 |
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|
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|
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def ShowClusterMaster(opts, args): |
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"""Write name of master node to the standard output. |
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|
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Args: |
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opts - class with options as members |
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|
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""" |
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print GetClient().QueryConfigValues(["master_node"])[0] |
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return 0 |
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|
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|
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def ShowClusterConfig(opts, args): |
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"""Shows cluster information. |
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|
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""" |
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op = opcodes.OpQueryClusterInfo() |
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result = SubmitOpCode(op) |
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|
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print ("Cluster name: %s" % result["name"]) |
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|
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print ("Master node: %s" % result["master"]) |
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|
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print ("Architecture (this node): %s (%s)" % |
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(result["architecture"][0], result["architecture"][1])) |
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|
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print ("Cluster hypervisor: %s" % result["hypervisor_type"]) |
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|
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return 0 |
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|
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|
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def ClusterCopyFile(opts, args): |
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"""Copy a file from master to some nodes. |
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|
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Args: |
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opts - class with options as members |
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args - list containing a single element, the file name |
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Opts used: |
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nodes - list containing the name of target nodes; if empty, all nodes |
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|
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""" |
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filename = args[0] |
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if not os.path.exists(filename): |
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raise errors.OpPrereqError("No such filename '%s'" % filename) |
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|
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cl = GetClient() |
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|
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myname = utils.HostInfo().name |
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|
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cluster_name = cl.QueryConfigValues(["cluster_name"])[0] |
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|
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op = opcodes.OpQueryNodes(output_fields=["name"], names=opts.nodes) |
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results = [row[0] for row in SubmitOpCode(op, cl=cl) if row[0] != myname] |
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|
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srun = ssh.SshRunner(cluster_name=cluster_name) |
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for node in results: |
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if not srun.CopyFileToNode(node, filename): |
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print >> sys.stderr, ("Copy of file %s to node %s failed" % |
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(filename, node)) |
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|
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return 0 |
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|
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def RunClusterCommand(opts, args): |
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"""Run a command on some nodes. |
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|
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Args: |
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opts - class with options as members |
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args - the command list as a list |
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Opts used: |
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nodes: list containing the name of target nodes; if empty, all nodes |
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|
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""" |
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cl = GetClient() |
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|
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command = " ".join(args) |
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op = opcodes.OpQueryNodes(output_fields=["name"], names=opts.nodes) |
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nodes = [row[0] for row in SubmitOpCode(op, cl=cl)] |
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|
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cluster_name, master_node = cl.QueryConfigValues(["cluster_name", |
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"master_node"]) |
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|
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srun = ssh.SshRunner(cluster_name=cluster_name) |
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|
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# Make sure master node is at list end |
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if master_node in nodes: |
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nodes.remove(master_node) |
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nodes.append(master_node) |
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|
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for name in nodes: |
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result = srun.Run(name, "root", command) |
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print ("------------------------------------------------") |
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print ("node: %s" % name) |
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print ("%s" % result.output) |
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print ("return code = %s" % result.exit_code) |
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|
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return 0 |
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|
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|
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def VerifyCluster(opts, args): |
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"""Verify integrity of cluster, performing various test on nodes. |
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|
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Args: |
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opts - class with options as members |
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|
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""" |
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skip_checks = [] |
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if opts.skip_nplusone_mem: |
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skip_checks.append(constants.VERIFY_NPLUSONE_MEM) |
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op = opcodes.OpVerifyCluster(skip_checks=skip_checks) |
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if SubmitOpCode(op): |
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return 0 |
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else: |
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return 1 |
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|
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|
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def VerifyDisks(opts, args): |
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"""Verify integrity of cluster disks. |
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|
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Args: |
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opts - class with options as members |
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|
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""" |
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op = opcodes.OpVerifyDisks() |
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result = SubmitOpCode(op) |
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if not isinstance(result, (list, tuple)) or len(result) != 4: |
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raise errors.ProgrammerError("Unknown result type for OpVerifyDisks") |
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|
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nodes, nlvm, instances, missing = result |
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|
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if nodes: |
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print "Nodes unreachable or with bad data:" |
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for name in nodes: |
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print "\t%s" % name |
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retcode = constants.EXIT_SUCCESS |
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|
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if nlvm: |
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for node, text in nlvm.iteritems(): |
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print ("Error on node %s: LVM error: %s" % |
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(node, text[-400:].encode('string_escape'))) |
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retcode |= 1 |
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print "You need to fix these nodes first before fixing instances" |
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|
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if instances: |
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for iname in instances: |
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if iname in missing: |
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continue |
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op = opcodes.OpActivateInstanceDisks(instance_name=iname) |
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try: |
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print "Activating disks for instance '%s'" % iname |
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SubmitOpCode(op) |
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except errors.GenericError, err: |
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nret, msg = FormatError(err) |
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retcode |= nret |
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print >> sys.stderr, ("Error activating disks for instance %s: %s" % |
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(iname, msg)) |
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|
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if missing: |
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for iname, ival in missing.iteritems(): |
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all_missing = utils.all(ival, lambda x: x[0] in nlvm) |
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if all_missing: |
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print ("Instance %s cannot be verified as it lives on" |
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" broken nodes" % iname) |
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else: |
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print "Instance %s has missing logical volumes:" % iname |
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ival.sort() |
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for node, vol in ival: |
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if node in nlvm: |
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print ("\tbroken node %s /dev/xenvg/%s" % (node, vol)) |
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else: |
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print ("\t%s /dev/xenvg/%s" % (node, vol)) |
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print ("You need to run replace_disks for all the above" |
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" instances, if this message persist after fixing nodes.") |
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retcode |= 1 |
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|
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return retcode |
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|
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|
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def MasterFailover(opts, args): |
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"""Failover the master node. |
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|
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This command, when run on a non-master node, will cause the current |
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master to cease being master, and the non-master to become new |
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master. |
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|
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""" |
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return bootstrap.MasterFailover() |
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|
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|
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def SearchTags(opts, args): |
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"""Searches the tags on all the cluster. |
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|
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""" |
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op = opcodes.OpSearchTags(pattern=args[0]) |
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result = SubmitOpCode(op) |
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if not result: |
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return 1 |
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result = list(result) |
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result.sort() |
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for path, tag in result: |
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print "%s %s" % (path, tag) |
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|
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|
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def SetClusterParams(opts, args): |
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"""Modify the cluster. |
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|
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Args: |
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opts - class with options as members |
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|
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""" |
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if not (not opts.lvm_storage or opts.vg_name): |
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print "Please give at least one of the parameters." |
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return 1 |
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|
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vg_name = opts.vg_name |
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if not opts.lvm_storage and opts.vg_name: |
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print ("Options --no-lvm-storage and --vg-name conflict.") |
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return 1 |
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|
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op = opcodes.OpSetClusterParams(vg_name=opts.vg_name) |
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SubmitOpCode(op) |
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return 0 |
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|
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|
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# this is an option common to more than one command, so we declare |
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# it here and reuse it |
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node_option = make_option("-n", "--node", action="append", dest="nodes", |
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help="Node to copy to (if not given, all nodes)," |
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" can be given multiple times", |
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metavar="<node>", default=[]) |
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|
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commands = { |
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'init': (InitCluster, ARGS_ONE, |
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[DEBUG_OPT, |
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make_option("-s", "--secondary-ip", dest="secondary_ip", |
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help="Specify the secondary ip for this node;" |
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" if given, the entire cluster must have secondary" |
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" addresses", |
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metavar="ADDRESS", default=None), |
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make_option("-t", "--hypervisor-type", dest="hypervisor_type", |
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help="Specify the hypervisor type " |
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"(xen-3.0, kvm, fake, xen-hvm-3.1)", |
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metavar="TYPE", choices=["xen-3.0", |
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"kvm", |
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"fake", |
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"xen-hvm-3.1"], |
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default="xen-3.0",), |
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make_option("-m", "--mac-prefix", dest="mac_prefix", |
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help="Specify the mac prefix for the instance IP" |
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" addresses, in the format XX:XX:XX", |
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metavar="PREFIX", |
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default="aa:00:00",), |
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make_option("-g", "--vg-name", dest="vg_name", |
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help="Specify the volume group name " |
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" (cluster-wide) for disk allocation [xenvg]", |
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metavar="VG", |
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default=None,), |
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make_option("-b", "--bridge", dest="def_bridge", |
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help="Specify the default bridge name (cluster-wide)" |
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" to connect the instances to [%s]" % |
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constants.DEFAULT_BRIDGE, |
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metavar="BRIDGE", |
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default=constants.DEFAULT_BRIDGE,), |
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make_option("--master-netdev", dest="master_netdev", |
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help="Specify the node interface (cluster-wide)" |
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" on which the master IP address will be added " |
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" [%s]" % constants.DEFAULT_BRIDGE, |
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metavar="NETDEV", |
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default=constants.DEFAULT_BRIDGE,), |
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make_option("--file-storage-dir", dest="file_storage_dir", |
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help="Specify the default directory (cluster-wide)" |
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" for storing the file-based disks [%s]" % |
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constants.DEFAULT_FILE_STORAGE_DIR, |
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metavar="DIR", |
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default=constants.DEFAULT_FILE_STORAGE_DIR,), |
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make_option("--no-lvm-storage", dest="lvm_storage", |
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help="No support for lvm based instances" |
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" (cluster-wide)", |
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action="store_false", default=True,), |
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], |
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"[opts...] <cluster_name>", |
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"Initialises a new cluster configuration"), |
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'destroy': (DestroyCluster, ARGS_NONE, |
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[DEBUG_OPT, |
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make_option("--yes-do-it", dest="yes_do_it", |
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help="Destroy cluster", |
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action="store_true"), |
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], |
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"", "Destroy cluster"), |
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'rename': (RenameCluster, ARGS_ONE, [DEBUG_OPT, FORCE_OPT], |
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"<new_name>", |
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"Renames the cluster"), |
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'verify': (VerifyCluster, ARGS_NONE, [DEBUG_OPT, |
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make_option("--no-nplus1-mem", dest="skip_nplusone_mem", |
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help="Skip N+1 memory redundancy tests", |
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action="store_true", |
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default=False,), |
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], |
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"", "Does a check on the cluster configuration"), |
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'verify-disks': (VerifyDisks, ARGS_NONE, [DEBUG_OPT], |
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"", "Does a check on the cluster disk status"), |
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'masterfailover': (MasterFailover, ARGS_NONE, [DEBUG_OPT], |
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"", "Makes the current node the master"), |
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'version': (ShowClusterVersion, ARGS_NONE, [DEBUG_OPT], |
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"", "Shows the cluster version"), |
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'getmaster': (ShowClusterMaster, ARGS_NONE, [DEBUG_OPT], |
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"", "Shows the cluster master"), |
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'copyfile': (ClusterCopyFile, ARGS_ONE, [DEBUG_OPT, node_option], |
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"[-n node...] <filename>", |
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"Copies a file to all (or only some) nodes"), |
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'command': (RunClusterCommand, ARGS_ATLEAST(1), [DEBUG_OPT, node_option], |
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"[-n node...] <command>", |
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"Runs a command on all (or only some) nodes"), |
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'info': (ShowClusterConfig, ARGS_NONE, [DEBUG_OPT], |
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"", "Show cluster configuration"), |
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'list-tags': (ListTags, ARGS_NONE, |
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[DEBUG_OPT], "", "List the tags of the cluster"), |
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'add-tags': (AddTags, ARGS_ANY, [DEBUG_OPT, TAG_SRC_OPT], |
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"tag...", "Add tags to the cluster"), |
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'remove-tags': (RemoveTags, ARGS_ANY, [DEBUG_OPT, TAG_SRC_OPT], |
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"tag...", "Remove tags from the cluster"), |
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'search-tags': (SearchTags, ARGS_ONE, |
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[DEBUG_OPT], "", "Searches the tags on all objects on" |
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" the cluster for a given pattern (regex)"), |
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'modify': (SetClusterParams, ARGS_NONE, |
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[DEBUG_OPT, |
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make_option("-g", "--vg-name", dest="vg_name", |
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help="Specify the volume group name " |
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" (cluster-wide) for disk allocation " |
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"and enable lvm based storage", |
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metavar="VG",), |
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make_option("--no-lvm-storage", dest="lvm_storage", |
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help="Disable support for lvm based instances" |
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" (cluster-wide)", |
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action="store_false", default=True,), |
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], |
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"[opts...]", |
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"Alters the parameters of the cluster"), |
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} |
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|
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if __name__ == '__main__': |
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sys.exit(GenericMain(commands, override={"tag_type": constants.TAG_CLUSTER})) |