4 # Copyright (C) 2006, 2007 Google Inc.
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.
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.
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
24 This module implements the data structures which define the cluster
25 operations - the so-called opcodes.
28 This module implements the logic for doing operations in the cluster. There
29 are two kinds of classes defined:
30 - opcodes, which are small classes only holding data for the task at hand
31 - logical units, which know how to deal with their specific opcode only
35 # this are practically structures, so disable the message about too
37 # pylint: disable-msg=R0903
44 def __init__(self, **kwargs):
46 if key not in self.__slots__:
47 raise TypeError("OpCode %s doesn't support the parameter '%s'" %
48 (self.__class__.__name__, key))
49 setattr(self, key, kwargs[key])
52 class OpInitCluster(OpCode):
53 """Initialise the cluster."""
54 OP_ID = "OP_CLUSTER_INIT"
55 __slots__ = ["cluster_name", "secondary_ip", "hypervisor_type",
56 "vg_name", "mac_prefix", "def_bridge", "master_netdev"]
59 class OpDestroyCluster(OpCode):
60 """Destroy the cluster."""
61 OP_ID = "OP_CLUSTER_DESTROY"
65 class OpQueryClusterInfo(OpCode):
66 """Query cluster information."""
67 OP_ID = "OP_CLUSTER_QUERY"
71 class OpClusterCopyFile(OpCode):
72 """Copy a file to multiple nodes."""
73 OP_ID = "OP_CLUSTER_COPYFILE"
74 __slots__ = ["nodes", "filename"]
77 class OpRunClusterCommand(OpCode):
78 """Run a command on multiple nodes."""
79 OP_ID = "OP_CLUSTER_RUNCOMMAND"
80 __slots__ = ["nodes", "command"]
83 class OpVerifyCluster(OpCode):
84 """Verify the cluster state."""
85 OP_ID = "OP_CLUSTER_VERIFY"
89 class OpVerifyDisks(OpCode):
90 """Verify the cluster disks.
95 - list of node names with bad data returned (unreachable, etc.)
96 - dist of node names with broken volume groups (values: error msg)
97 - list of instances with degraded disks (that should be activated)
98 - dict of instances with missing logical volumes (values: (node, vol)
99 pairs with details about the missing volumes)
101 In normal operation, all lists should be empty. A non-empty instance
102 list (3rd element of the result) is still ok (errors were fixed) but
103 non-empty node list means some node is down, and probably there are
104 unfixable drbd errors.
106 Note that only instances that are drbd-based are taken into
107 consideration. This might need to be revisited in the future.
110 OP_ID = "OP_CLUSTER_VERIFY_DISKS"
114 class OpMasterFailover(OpCode):
115 """Do a master failover."""
116 OP_ID = "OP_CLUSTER_MASTERFAILOVER"
120 class OpDumpClusterConfig(OpCode):
121 """Dump the cluster configuration."""
122 OP_ID = "OP_CLUSTER_DUMPCONFIG"
126 class OpRenameCluster(OpCode):
127 """Rename the cluster."""
128 OP_ID = "OP_CLUSTER_RENAME"
134 class OpRemoveNode(OpCode):
136 OP_ID = "OP_NODE_REMOVE"
137 __slots__ = ["node_name"]
140 class OpAddNode(OpCode):
142 OP_ID = "OP_NODE_ADD"
143 __slots__ = ["node_name", "primary_ip", "secondary_ip"]
146 class OpQueryNodes(OpCode):
147 """Compute the list of nodes."""
148 OP_ID = "OP_NODE_QUERY"
149 __slots__ = ["output_fields", "names"]
152 class OpQueryNodeVolumes(OpCode):
153 """Get list of volumes on node."""
154 OP_ID = "OP_NODE_QUERYVOLS"
155 __slots__ = ["nodes", "output_fields"]
160 class OpCreateInstance(OpCode):
161 """Create an instance."""
162 OP_ID = "OP_INSTANCE_CREATE"
164 "instance_name", "mem_size", "disk_size", "os_type", "pnode",
165 "disk_template", "snode", "swap_size", "mode",
166 "vcpus", "ip", "bridge", "src_node", "src_path", "start",
167 "wait_for_sync", "ip_check", "mac",
168 "kernel_path", "initrd_path", "hvm_boot_order",
172 class OpReinstallInstance(OpCode):
173 """Reinstall an instance's OS."""
174 OP_ID = "OP_INSTANCE_REINSTALL"
175 __slots__ = ["instance_name", "os_type"]
178 class OpRemoveInstance(OpCode):
179 """Remove an instance."""
180 OP_ID = "OP_INSTANCE_REMOVE"
181 __slots__ = ["instance_name", "ignore_failures"]
184 class OpRenameInstance(OpCode):
185 """Rename an instance."""
186 OP_ID = "OP_INSTANCE_RENAME"
187 __slots__ = ["instance_name", "ignore_ip", "new_name"]
190 class OpStartupInstance(OpCode):
191 """Startup an instance."""
192 OP_ID = "OP_INSTANCE_STARTUP"
193 __slots__ = ["instance_name", "force", "extra_args"]
196 class OpShutdownInstance(OpCode):
197 """Shutdown an instance."""
198 OP_ID = "OP_INSTANCE_SHUTDOWN"
199 __slots__ = ["instance_name"]
202 class OpRebootInstance(OpCode):
203 """Reboot an instance."""
204 OP_ID = "OP_INSTANCE_STARTUP"
205 __slots__ = ["instance_name", "reboot_type", "extra_args",
206 "ignore_secondaries" ]
209 class OpAddMDDRBDComponent(OpCode):
210 """Add a MD-DRBD component."""
211 OP_ID = "OP_INSTANCE_ADD_MDDRBD"
212 __slots__ = ["instance_name", "remote_node", "disk_name"]
215 class OpRemoveMDDRBDComponent(OpCode):
216 """Remove a MD-DRBD component."""
217 OP_ID = "OP_INSTANCE_REMOVE_MDDRBD"
218 __slots__ = ["instance_name", "disk_name", "disk_id"]
221 class OpReplaceDisks(OpCode):
222 """Replace the disks of an instance."""
223 OP_ID = "OP_INSTANCE_REPLACE_DISKS"
224 __slots__ = ["instance_name", "remote_node", "mode", "disks"]
227 class OpFailoverInstance(OpCode):
228 """Failover an instance."""
229 OP_ID = "OP_INSTANCE_FAILOVER"
230 __slots__ = ["instance_name", "ignore_consistency"]
233 class OpConnectConsole(OpCode):
234 """Connect to an instance's console."""
235 OP_ID = "OP_INSTANCE_CONSOLE"
236 __slots__ = ["instance_name"]
239 class OpActivateInstanceDisks(OpCode):
240 """Activate an instance's disks."""
241 OP_ID = "OP_INSTANCE_ACTIVATE_DISKS"
242 __slots__ = ["instance_name"]
245 class OpDeactivateInstanceDisks(OpCode):
246 """Deactivate an instance's disks."""
247 OP_ID = "OP_INSTANCE_DEACTIVATE_DISKS"
248 __slots__ = ["instance_name"]
251 class OpQueryInstances(OpCode):
252 """Compute the list of instances."""
253 OP_ID = "OP_INSTANCE_QUERY"
254 __slots__ = ["output_fields", "names"]
257 class OpQueryInstanceData(OpCode):
258 """Compute the run-time status of instances."""
259 OP_ID = "OP_INSTANCE_QUERY_DATA"
260 __slots__ = ["instances"]
263 class OpSetInstanceParms(OpCode):
264 """Change the parameters of an instance."""
265 OP_ID = "OP_INSTANCE_SET_PARMS"
267 "instance_name", "mem", "vcpus", "ip", "bridge", "mac",
268 "kernel_path", "initrd_path", "hvm_boot_order",
273 class OpDiagnoseOS(OpCode):
274 """Compute the list of guest operating systems."""
275 OP_ID = "OP_OS_DIAGNOSE"
279 class OpQueryExports(OpCode):
280 """Compute the list of exported images."""
281 OP_ID = "OP_BACKUP_QUERY"
282 __slots__ = ["nodes"]
284 class OpExportInstance(OpCode):
285 """Export an instance."""
286 OP_ID = "OP_BACKUP_EXPORT"
287 __slots__ = ["instance_name", "target_node", "shutdown"]
291 class OpGetTags(OpCode):
292 """Returns the tags of the given object."""
293 OP_ID = "OP_TAGS_GET"
294 __slots__ = ["kind", "name"]
297 class OpSearchTags(OpCode):
298 """Searches the tags in the cluster for a given pattern."""
299 OP_ID = "OP_TAGS_SEARCH"
300 __slots__ = ["pattern"]
303 class OpAddTags(OpCode):
304 """Add a list of tags on a given object."""
305 OP_ID = "OP_TAGS_SET"
306 __slots__ = ["kind", "name", "tags"]
309 class OpDelTags(OpCode):
310 """Remove a list of tags from a given object."""
311 OP_ID = "OP_TAGS_DEL"
312 __slots__ = ["kind", "name", "tags"]
316 class OpTestDelay(OpCode):
317 """Sleeps for a configured amount of time.
319 This is used just for debugging and testing.
322 - duration: the time to sleep
323 - on_master: if true, sleep on the master
324 - on_nodes: list of nodes in which to sleep
326 If the on_master parameter is true, it will execute a sleep on the
327 master (before any node sleep).
329 If the on_nodes list is not empty, it will sleep on those nodes
330 (after the sleep on the master, if that is enabled).
332 As an additional feature, the case of duration < 0 will be reported
333 as an execution error, so this opcode can be used as a failure
334 generator. The case of duration == 0 will not be treated specially.
337 OP_ID = "OP_TEST_DELAY"
338 __slots__ = ["duration", "on_master", "on_nodes"]