4 # Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011 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
21 """RPC definitions for communication between master and node daemons.
23 RPC definition fields:
26 - L{SINGLE} for single-node calls, L{MULTI} for multi-node
27 - Timeout (e.g. L{TMO_NORMAL})
28 - List of arguments as tuples
31 - Argument kind used for encoding/decoding
32 - Description for docstring (can be C{None})
34 - Return value wrapper (e.g. for deserializing into L{objects}-based objects)
35 - Short call description for docstring
40 # Guidelines for choosing timeouts:
41 # - call used during watcher: timeout of 1min, _TMO_URGENT
42 # - trivial (but be sure it is trivial) (e.g. reading a file): 5min, _TMO_FAST
43 # - other calls: 15 min, _TMO_NORMAL
44 # - special calls (instance add, etc.): either _TMO_SLOW (1h) or huge timeouts
45 TMO_URGENT = 60 # one minute
46 TMO_FAST = 5 * 60 # five minutes
47 TMO_NORMAL = 15 * 60 # 15 minutes
48 TMO_SLOW = 3600 # one hour
52 SINGLE = "single-node"
55 # Constants for encoding/decoding
64 ED_FINALIZE_EXPORT_DISKS,
66 ED_BLOCKDEV_RENAME) = range(1, 12)
68 _FILE_STORAGE_CALLS = [
69 ("file_storage_dir_create", SINGLE, TMO_FAST, [
70 ("file_storage_dir", None, "File storage directory"),
71 ], None, "Create the given file storage directory"),
72 ("file_storage_dir_remove", SINGLE, TMO_FAST, [
73 ("file_storage_dir", None, "File storage directory"),
74 ], None, "Remove the given file storage directory"),
75 ("file_storage_dir_rename", SINGLE, TMO_FAST, [
76 ("old_file_storage_dir", None, "Old name"),
77 ("new_file_storage_dir", None, "New name"),
78 ], None, "Rename file storage directory"),
82 ("storage_list", MULTI, TMO_NORMAL, [
83 ("su_name", None, None),
84 ("su_args", None, None),
86 ("fields", None, None),
87 ], None, "Get list of storage units"),
88 ("storage_modify", SINGLE, TMO_NORMAL, [
89 ("su_name", None, None),
90 ("su_args", None, None),
92 ("changes", None, None),
93 ], None, "Modify a storage unit"),
94 ("storage_execute", SINGLE, TMO_NORMAL, [
95 ("su_name", None, None),
96 ("su_args", None, None),
99 ], None, "Executes an operation on a storage unit"),
103 ("instance_info", SINGLE, TMO_URGENT, [
104 ("instance", None, "Instance name"),
105 ("hname", None, "Hypervisor type"),
106 ], None, "Returns information about a single instance"),
107 ("all_instances_info", MULTI, TMO_URGENT, [
108 ("hypervisor_list", None, "Hypervisors to query for instances"),
109 ], None, "Returns information about all instances on the given nodes"),
110 ("instance_list", MULTI, TMO_URGENT, [
111 ("hypervisor_list", None, "Hypervisors to query for instances"),
112 ], None, "Returns the list of running instances on the given nodes"),
113 ("instance_reboot", SINGLE, TMO_NORMAL, [
114 ("inst", ED_INST_DICT, "Instance object"),
115 ("reboot_type", None, None),
116 ("shutdown_timeout", None, None),
117 ], None, "Returns the list of running instances on the given nodes"),
118 ("instance_shutdown", SINGLE, TMO_NORMAL, [
119 ("instance", ED_INST_DICT, "Instance object"),
120 ("timeout", None, None),
121 ], None, "Stops an instance"),
122 ("instance_run_rename", SINGLE, TMO_SLOW, [
123 ("instance", ED_INST_DICT, "Instance object"),
124 ("old_name", None, None),
125 ("debug", None, None),
126 ], None, "Run the OS rename script for an instance"),
127 ("instance_migratable", SINGLE, TMO_NORMAL, [
128 ("instance", ED_INST_DICT, "Instance object"),
129 ], None, "Checks whether the given instance can be migrated"),
130 ("migration_info", SINGLE, TMO_NORMAL, [
131 ("instance", ED_INST_DICT, "Instance object"),
133 "Gather the information necessary to prepare an instance migration"),
134 ("accept_instance", SINGLE, TMO_NORMAL, [
135 ("instance", ED_INST_DICT, "Instance object"),
136 ("info", None, "Result for the call_migration_info call"),
137 ("target", None, "Target hostname (usually an IP address)"),
138 ], None, "Prepare a node to accept an instance"),
139 ("instance_finalize_migration_dst", SINGLE, TMO_NORMAL, [
140 ("instance", ED_INST_DICT, "Instance object"),
141 ("info", None, "Result for the call_migration_info call"),
142 ("success", None, "Whether the migration was a success or failure"),
143 ], None, "Finalize any target-node migration specific operation"),
144 ("instance_migrate", SINGLE, TMO_SLOW, [
145 ("instance", ED_INST_DICT, "Instance object"),
146 ("target", None, "Target node name"),
147 ("live", None, "Whether the migration should be done live or not"),
148 ], None, "Migrate an instance"),
149 ("instance_finalize_migration_src", SINGLE, TMO_SLOW, [
150 ("instance", ED_INST_DICT, "Instance object"),
151 ("success", None, "Whether the migration succeeded or not"),
152 ("live", None, "Whether the user requested a live migration or not"),
153 ], None, "Finalize the instance migration on the source node"),
154 ("instance_get_migration_status", SINGLE, TMO_SLOW, [
155 ("instance", ED_INST_DICT, "Instance object"),
156 ], "self._MigrationStatusPostProc", "Report migration status"),
157 ("instance_start", SINGLE, TMO_NORMAL, [
158 ("instance_hvp_bep", ED_INST_DICT_HVP_BEP, None),
159 ("startup_paused", None, None),
160 ], None, "Starts an instance"),
161 ("instance_os_add", SINGLE, TMO_1DAY, [
162 ("instance_osp", ED_INST_DICT_OSP, None),
163 ("reinstall", None, None),
164 ("debug", None, None),
165 ], None, "Starts an instance"),
169 ("import_start", SINGLE, TMO_NORMAL, [
170 ("opts", ED_OBJECT_DICT, None),
171 ("instance", ED_INST_DICT, None),
172 ("component", None, None),
173 ("dest", ED_IMPEXP_IO, "Import destination"),
174 ], None, "Starts an import daemon"),
175 ("export_start", SINGLE, TMO_NORMAL, [
176 ("opts", ED_OBJECT_DICT, None),
177 ("host", None, None),
178 ("port", None, None),
179 ("instance", ED_INST_DICT, None),
180 ("component", None, None),
181 ("source", ED_IMPEXP_IO, "Export source"),
182 ], None, "Starts an export daemon"),
183 ("impexp_status", SINGLE, TMO_FAST, [
184 ("names", None, "Import/export names"),
185 ], "self._ImpExpStatusPostProc", "Gets the status of an import or export"),
186 ("impexp_abort", SINGLE, TMO_NORMAL, [
187 ("name", None, "Import/export name"),
188 ], None, "Aborts an import or export"),
189 ("impexp_cleanup", SINGLE, TMO_NORMAL, [
190 ("name", None, "Import/export name"),
191 ], None, "Cleans up after an import or export"),
192 ("export_info", SINGLE, TMO_FAST, [
193 ("path", None, None),
194 ], None, "Queries the export information in a given path"),
195 ("finalize_export", SINGLE, TMO_NORMAL, [
196 ("instance", ED_INST_DICT, None),
197 ("snap_disks", ED_FINALIZE_EXPORT_DISKS, None),
198 ], None, "Request the completion of an export operation"),
199 ("export_list", MULTI, TMO_FAST, [], None, "Gets the stored exports list"),
200 ("export_remove", SINGLE, TMO_FAST, [
201 ("export", None, None),
202 ], None, "Requests removal of a given export"),
206 ("x509_cert_create", SINGLE, TMO_NORMAL, [
207 ("validity", None, "Validity in seconds"),
208 ], None, "Creates a new X509 certificate for SSL/TLS"),
209 ("x509_cert_remove", SINGLE, TMO_NORMAL, [
210 ("name", None, "Certificate name"),
211 ], None, "Removes a X509 certificate"),
215 ("bdev_sizes", MULTI, TMO_URGENT, [
216 ("devices", None, None),
217 ], None, "Gets the sizes of requested block devices present on a node"),
218 ("blockdev_create", SINGLE, TMO_NORMAL, [
219 ("bdev", ED_OBJECT_DICT, None),
220 ("size", None, None),
221 ("owner", None, None),
222 ("on_primary", None, None),
223 ("info", None, None),
224 ], None, "Request creation of a given block device"),
225 ("blockdev_wipe", SINGLE, TMO_SLOW, [
226 ("bdev", ED_OBJECT_DICT, None),
227 ("offset", None, None),
228 ("size", None, None),
230 "Request wipe at given offset with given size of a block device"),
231 ("blockdev_remove", SINGLE, TMO_NORMAL, [
232 ("bdev", ED_OBJECT_DICT, None),
233 ], None, "Request removal of a given block device"),
234 ("blockdev_pause_resume_sync", SINGLE, TMO_NORMAL, [
235 ("disks", ED_OBJECT_DICT_LIST, None),
236 ("pause", None, None),
237 ], None, "Request a pause/resume of given block device"),
238 ("blockdev_assemble", SINGLE, TMO_NORMAL, [
239 ("disk", ED_OBJECT_DICT, None),
240 ("owner", None, None),
241 ("on_primary", None, None),
243 ], None, "Request assembling of a given block device"),
244 ("blockdev_shutdown", SINGLE, TMO_NORMAL, [
245 ("disk", ED_OBJECT_DICT, None),
246 ], None, "Request shutdown of a given block device"),
247 ("blockdev_addchildren", SINGLE, TMO_NORMAL, [
248 ("bdev", ED_OBJECT_DICT, None),
249 ("ndevs", ED_OBJECT_DICT_LIST, None),
250 ], None, "Request adding a list of children to a (mirroring) device"),
251 ("blockdev_removechildren", SINGLE, TMO_NORMAL, [
252 ("bdev", ED_OBJECT_DICT, None),
253 ("ndevs", ED_OBJECT_DICT_LIST, None),
254 ], None, "Request removing a list of children from a (mirroring) device"),
255 ("blockdev_close", SINGLE, TMO_NORMAL, [
256 ("instance_name", None, None),
257 ("disks", ED_OBJECT_DICT_LIST, None),
258 ], None, "Closes the given block devices"),
259 ("blockdev_getsize", SINGLE, TMO_NORMAL, [
260 ("disks", ED_OBJECT_DICT_LIST, None),
261 ], None, "Returns the size of the given disks"),
262 ("drbd_disconnect_net", MULTI, TMO_NORMAL, [
263 ("nodes_ip", None, None),
264 ("disks", ED_OBJECT_DICT_LIST, None),
265 ], None, "Disconnects the network of the given drbd devices"),
266 ("drbd_attach_net", MULTI, TMO_NORMAL, [
267 ("nodes_ip", None, None),
268 ("disks", ED_OBJECT_DICT_LIST, None),
269 ("instance_name", None, None),
270 ("multimaster", None, None),
271 ], None, "Connects the given DRBD devices"),
272 ("drbd_wait_sync", MULTI, TMO_SLOW, [
273 ("nodes_ip", None, None),
274 ("disks", ED_OBJECT_DICT_LIST, None),
275 ], None, "Waits for the synchronization of drbd devices is complete"),
276 ("blockdev_grow", SINGLE, TMO_NORMAL, [
277 ("cf_bdev", ED_OBJECT_DICT, None),
278 ("amount", None, None),
279 ("dryrun", None, None),
280 ], None, "Request a snapshot of the given block device"),
281 ("blockdev_export", SINGLE, TMO_1DAY, [
282 ("cf_bdev", ED_OBJECT_DICT, None),
283 ("dest_node", None, None),
284 ("dest_path", None, None),
285 ("cluster_name", None, None),
286 ], None, "Export a given disk to another node"),
287 ("blockdev_snapshot", SINGLE, TMO_NORMAL, [
288 ("cf_bdev", ED_OBJECT_DICT, None),
289 ], None, "Export a given disk to another node"),
290 ("blockdev_rename", SINGLE, TMO_NORMAL, [
291 ("devlist", ED_BLOCKDEV_RENAME, None),
292 ], None, "Request rename of the given block devices"),
293 ("blockdev_find", SINGLE, TMO_NORMAL, [
294 ("disk", ED_OBJECT_DICT, None),
295 ], "self._BlockdevFindPostProc",
296 "Request identification of a given block device"),
297 ("blockdev_getmirrorstatus", SINGLE, TMO_NORMAL, [
298 ("disks", ED_OBJECT_DICT_LIST, None),
299 ], "self._BlockdevGetMirrorStatusPostProc",
300 "Request status of a (mirroring) device"),
301 ("blockdev_getmirrorstatus_multi", MULTI, TMO_NORMAL, [
302 ("node_disks", ED_NODE_TO_DISK_DICT, None),
303 ], "self._BlockdevGetMirrorStatusMultiPostProc",
304 "Request status of (mirroring) devices from multiple nodes"),
308 ("os_diagnose", MULTI, TMO_FAST, [], None,
309 "Request a diagnose of OS definitions"),
310 ("os_validate", MULTI, TMO_FAST, [
311 ("required", None, None),
312 ("name", None, None),
313 ("checks", None, None),
314 ("params", None, None),
315 ], None, "Run a validation routine for a given OS"),
316 ("os_get", SINGLE, TMO_FAST, [
317 ("name", None, None),
318 ], "self._OsGetPostProc", "Returns an OS definition"),
322 ("node_has_ip_address", SINGLE, TMO_FAST, [
323 ("address", None, "IP address"),
324 ], None, "Checks if a node has the given IP address"),
325 ("node_info", MULTI, TMO_URGENT, [
327 "Name of the volume group to ask for disk space information"),
328 ("hypervisor_type", None,
329 "Name of the hypervisor to ask for memory information"),
330 ], None, "Return node information"),
331 ("node_verify", MULTI, TMO_NORMAL, [
332 ("checkdict", None, None),
333 ("cluster_name", None, None),
334 ], None, "Request verification of given parameters"),
335 ("node_volumes", MULTI, TMO_FAST, [], None, "Gets all volumes on node(s)"),
336 ("node_demote_from_mc", SINGLE, TMO_FAST, [], None,
337 "Demote a node from the master candidate role"),
338 ("node_powercycle", SINGLE, TMO_NORMAL, [
339 ("hypervisor", None, "Hypervisor type"),
340 ], None, "Tries to powercycle a node"),
344 ("lv_list", MULTI, TMO_URGENT, [
345 ("vg_name", None, None),
346 ], None, "Gets the logical volumes present in a given volume group"),
347 ("vg_list", MULTI, TMO_URGENT, [], None, "Gets the volume group list"),
348 ("bridges_exist", SINGLE, TMO_URGENT, [
349 ("bridges_list", None, "Bridges which must be present on remote node"),
350 ], None, "Checks if a node has all the bridges given"),
351 ("etc_hosts_modify", SINGLE, TMO_NORMAL, [
353 "Mode to operate; currently L{constants.ETC_HOSTS_ADD} or"
354 " L{constants.ETC_HOSTS_REMOVE}"),
355 ("name", None, "Hostname to be modified"),
356 ("ip", None, "IP address (L{constants.ETC_HOSTS_ADD} only)"),
357 ], None, "Modify hosts file with name"),
358 ("drbd_helper", MULTI, TMO_URGENT, [], None, "Gets DRBD helper"),
359 ("run_oob", SINGLE, TMO_NORMAL, [
360 ("oob_program", None, None),
361 ("command", None, None),
362 ("remote_node", None, None),
363 ("timeout", None, None),
364 ], None, "Runs out-of-band command"),
365 ("hooks_runner", MULTI, TMO_NORMAL, [
366 ("hpath", None, None),
367 ("phase", None, None),
369 ], None, "Call the hooks runner"),
370 ("iallocator_runner", SINGLE, TMO_NORMAL, [
371 ("name", None, "Iallocator name"),
372 ("idata", None, "JSON-encoded input string"),
373 ], None, "Call an iallocator on a remote node"),
374 ("test_delay", MULTI, None, [
375 ("duration", None, None),
376 ], None, "Sleep for a fixed time on given node(s)"),
377 ("hypervisor_validate_params", MULTI, TMO_NORMAL, [
378 ("hvname", None, "Hypervisor name"),
379 ("hvfull", None, "Parameters to be validated"),
380 ], None, "Validate hypervisor params"),
384 "RpcClientDefault": (_IMPEXP_CALLS + _X509_CALLS + _OS_CALLS + _NODE_CALLS +
385 _FILE_STORAGE_CALLS + _MISC_CALLS + _INSTANCE_CALLS + _BLOCKDEV_CALLS +
387 "RpcClientJobQueue": [
388 ("jobqueue_update", MULTI, TMO_URGENT, [
389 ("file_name", None, None),
390 ("content", ED_COMPRESS, None),
391 ], None, "Update job queue file"),
392 ("jobqueue_purge", SINGLE, TMO_NORMAL, [], None, "Purge job queue"),
393 ("jobqueue_rename", MULTI, TMO_URGENT, [
394 ("rename", None, None),
395 ], None, "Rename job queue file"),
397 "RpcClientBootstrap": [
398 ("node_start_master_daemons", SINGLE, TMO_FAST, [
399 ("no_voting", None, None),
400 ], None, "Starts master daemons on a node"),
401 ("node_activate_master_ip", SINGLE, TMO_FAST, [
402 ("master_params", ED_OBJECT_DICT, "Network parameters of the master"),
404 "Activates master IP on a node"),
405 ("node_stop_master", SINGLE, TMO_FAST, [], None,
406 "Deactivates master IP and stops master daemons on a node"),
407 ("node_deactivate_master_ip", SINGLE, TMO_FAST, [
408 ("master_params", ED_OBJECT_DICT, "Network parameters of the master"),
410 "Deactivates master IP on a node"),
411 ("node_change_master_netmask", SINGLE, TMO_FAST, [
412 ("old_netmask", None, "The old value of the netmask"),
413 ("netmask", None, "The new value of the netmask"),
414 ("master_ip", None, "The master IP"),
415 ("master_netdev", None, "The master network device"),
416 ], None, "Change master IP netmask"),
417 ("node_leave_cluster", SINGLE, TMO_NORMAL, [
418 ("modify_ssh_setup", None, None),
419 ], None, "Requests a node to clean the cluster information it has"),
420 ("master_info", MULTI, TMO_URGENT, [], None, "Query master info"),
421 ("version", MULTI, TMO_URGENT, [], None, "Query node version"),
424 ("upload_file", MULTI, TMO_NORMAL, [
425 ("file_name", ED_FILE_DETAILS, None),
426 ], None, "Upload a file"),
427 ("write_ssconf_files", MULTI, TMO_NORMAL, [
428 ("values", None, None),
429 ], None, "Write ssconf files"),