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1 | 1f7d3f7d | René Nussbaumer | #!/usr/bin/python |
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2 | 1f7d3f7d | René Nussbaumer | # |
3 | 1f7d3f7d | René Nussbaumer | |
4 | 3d8f154f | Stephen Shirley | # Copyright (C) 2010 Google Inc. |
5 | 1f7d3f7d | René Nussbaumer | # |
6 | 1f7d3f7d | René Nussbaumer | # This program is free software; you can redistribute it and/or modify |
7 | 1f7d3f7d | René Nussbaumer | # it under the terms of the GNU General Public License as published by |
8 | 1f7d3f7d | René Nussbaumer | # the Free Software Foundation; either version 2 of the License, or |
9 | 1f7d3f7d | René Nussbaumer | # (at your option) any later version. |
10 | 1f7d3f7d | René Nussbaumer | # |
11 | 1f7d3f7d | René Nussbaumer | # This program is distributed in the hope that it will be useful, but |
12 | 1f7d3f7d | René Nussbaumer | # WITHOUT ANY WARRANTY; without even the implied warranty of |
13 | 1f7d3f7d | René Nussbaumer | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
14 | 1f7d3f7d | René Nussbaumer | # General Public License for more details. |
15 | 1f7d3f7d | René Nussbaumer | # |
16 | 1f7d3f7d | René Nussbaumer | # You should have received a copy of the GNU General Public License |
17 | 1f7d3f7d | René Nussbaumer | # along with this program; if not, write to the Free Software |
18 | 1f7d3f7d | René Nussbaumer | # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
19 | 1f7d3f7d | René Nussbaumer | # 02110-1301, USA. |
20 | 1f7d3f7d | René Nussbaumer | |
21 | 1f7d3f7d | René Nussbaumer | """Tool to merge two or more clusters together. |
22 | 1f7d3f7d | René Nussbaumer | |
23 | 1f7d3f7d | René Nussbaumer | The clusters have to run the same version of Ganeti! |
24 | 1f7d3f7d | René Nussbaumer | |
25 | 1f7d3f7d | René Nussbaumer | """ |
26 | 1f7d3f7d | René Nussbaumer | |
27 | 1f7d3f7d | René Nussbaumer | # pylint: disable-msg=C0103 |
28 | 1f7d3f7d | René Nussbaumer | # C0103: Invalid name cluster-merge |
29 | 1f7d3f7d | René Nussbaumer | |
30 | 1f7d3f7d | René Nussbaumer | import logging |
31 | 1f7d3f7d | René Nussbaumer | import os |
32 | 1f7d3f7d | René Nussbaumer | import optparse |
33 | 1f7d3f7d | René Nussbaumer | import shutil |
34 | 1f7d3f7d | René Nussbaumer | import sys |
35 | 1f7d3f7d | René Nussbaumer | import tempfile |
36 | 1f7d3f7d | René Nussbaumer | |
37 | 1f7d3f7d | René Nussbaumer | from ganeti import cli |
38 | 1f7d3f7d | René Nussbaumer | from ganeti import config |
39 | 1f7d3f7d | René Nussbaumer | from ganeti import constants |
40 | 1f7d3f7d | René Nussbaumer | from ganeti import errors |
41 | 1f7d3f7d | René Nussbaumer | from ganeti import ssh |
42 | 1f7d3f7d | René Nussbaumer | from ganeti import utils |
43 | 1f7d3f7d | René Nussbaumer | |
44 | 1f7d3f7d | René Nussbaumer | |
45 | 1a615be0 | Stephen Shirley | _GROUPS_MERGE = "merge" |
46 | 1a615be0 | Stephen Shirley | _GROUPS_RENAME = "rename" |
47 | 1a615be0 | Stephen Shirley | _CLUSTERMERGE_ECID = "clustermerge-ecid" |
48 | 1a615be0 | Stephen Shirley | |
49 | 1f7d3f7d | René Nussbaumer | PAUSE_PERIOD_OPT = cli.cli_option("-p", "--watcher-pause-period", default=1800, |
50 | 1f7d3f7d | René Nussbaumer | action="store", type="int", |
51 | 1f7d3f7d | René Nussbaumer | dest="pause_period", |
52 | 1f7d3f7d | René Nussbaumer | help=("Amount of time in seconds watcher" |
53 | 1f7d3f7d | René Nussbaumer | " should be suspended from running")) |
54 | 1a615be0 | Stephen Shirley | GROUPS_OPT = cli.cli_option("--groups", default=None, metavar="STRATEGY", |
55 | 9b945588 | Stephen Shirley | choices=(_GROUPS_MERGE, _GROUPS_RENAME), |
56 | 9b945588 | Stephen Shirley | dest="groups", |
57 | 1a615be0 | Stephen Shirley | help=("How to handle groups that have the" |
58 | 1a615be0 | Stephen Shirley | " same name (One of: %s/%s)" % |
59 | 1a615be0 | Stephen Shirley | (_GROUPS_MERGE, _GROUPS_RENAME))) |
60 | 1f7d3f7d | René Nussbaumer | |
61 | 1f7d3f7d | René Nussbaumer | |
62 | 71bbe910 | Stephen Shirley | def Flatten(unflattened_list): |
63 | 1f7d3f7d | René Nussbaumer | """Flattens a list. |
64 | 1f7d3f7d | René Nussbaumer | |
65 | 71bbe910 | Stephen Shirley | @param unflattened_list: A list of unflattened list objects. |
66 | 71bbe910 | Stephen Shirley | @return: A flattened list |
67 | 1f7d3f7d | René Nussbaumer | |
68 | 1f7d3f7d | René Nussbaumer | """ |
69 | 71bbe910 | Stephen Shirley | flattened_list = [] |
70 | 1f7d3f7d | René Nussbaumer | |
71 | 71bbe910 | Stephen Shirley | for item in unflattened_list: |
72 | 1f7d3f7d | René Nussbaumer | if isinstance(item, list): |
73 | 71bbe910 | Stephen Shirley | flattened_list.extend(Flatten(item)) |
74 | 1f7d3f7d | René Nussbaumer | else: |
75 | 71bbe910 | Stephen Shirley | flattened_list.append(item) |
76 | 71bbe910 | Stephen Shirley | return flattened_list |
77 | 1f7d3f7d | René Nussbaumer | |
78 | 1f7d3f7d | René Nussbaumer | |
79 | 1f7d3f7d | René Nussbaumer | class MergerData(object): |
80 | 1f7d3f7d | René Nussbaumer | """Container class to hold data used for merger. |
81 | 1f7d3f7d | René Nussbaumer | |
82 | 1f7d3f7d | René Nussbaumer | """ |
83 | 1f7d3f7d | René Nussbaumer | def __init__(self, cluster, key_path, nodes, instances, config_path=None): |
84 | 1f7d3f7d | René Nussbaumer | """Initialize the container. |
85 | 1f7d3f7d | René Nussbaumer | |
86 | 1f7d3f7d | René Nussbaumer | @param cluster: The name of the cluster |
87 | 1f7d3f7d | René Nussbaumer | @param key_path: Path to the ssh private key used for authentication |
88 | 8697f0fa | Guido Trotter | @param nodes: List of online nodes in the merging cluster |
89 | 1f7d3f7d | René Nussbaumer | @param instances: List of instances running on merging cluster |
90 | 3d2e7a27 | Stephen Shirley | @param config_path: Path to the merging cluster config |
91 | 1f7d3f7d | René Nussbaumer | |
92 | 1f7d3f7d | René Nussbaumer | """ |
93 | 1f7d3f7d | René Nussbaumer | self.cluster = cluster |
94 | 1f7d3f7d | René Nussbaumer | self.key_path = key_path |
95 | 1f7d3f7d | René Nussbaumer | self.nodes = nodes |
96 | 3d2e7a27 | Stephen Shirley | self.instances = instances |
97 | 3d2e7a27 | Stephen Shirley | self.config_path = config_path |
98 | 1f7d3f7d | René Nussbaumer | |
99 | 1f7d3f7d | René Nussbaumer | |
100 | 1f7d3f7d | René Nussbaumer | class Merger(object): |
101 | 1f7d3f7d | René Nussbaumer | """Handling the merge. |
102 | 1f7d3f7d | René Nussbaumer | |
103 | 1f7d3f7d | René Nussbaumer | """ |
104 | 1a615be0 | Stephen Shirley | def __init__(self, clusters, pause_period, groups): |
105 | 1f7d3f7d | René Nussbaumer | """Initialize object with sane defaults and infos required. |
106 | 1f7d3f7d | René Nussbaumer | |
107 | 1f7d3f7d | René Nussbaumer | @param clusters: The list of clusters to merge in |
108 | 1f7d3f7d | René Nussbaumer | @param pause_period: The time watcher shall be disabled for |
109 | 1a615be0 | Stephen Shirley | @param groups: How to handle group conflicts |
110 | 1f7d3f7d | René Nussbaumer | |
111 | 1f7d3f7d | René Nussbaumer | """ |
112 | 1f7d3f7d | René Nussbaumer | self.merger_data = [] |
113 | 1f7d3f7d | René Nussbaumer | self.clusters = clusters |
114 | 1f7d3f7d | René Nussbaumer | self.pause_period = pause_period |
115 | 1f7d3f7d | René Nussbaumer | self.work_dir = tempfile.mkdtemp(suffix="cluster-merger") |
116 | be8aecab | Stephen Shirley | (self.cluster_name, ) = cli.GetClient().QueryConfigValues(["cluster_name"]) |
117 | 1f7d3f7d | René Nussbaumer | self.ssh_runner = ssh.SshRunner(self.cluster_name) |
118 | 1a615be0 | Stephen Shirley | self.groups = groups |
119 | 1f7d3f7d | René Nussbaumer | |
120 | 1f7d3f7d | René Nussbaumer | def Setup(self): |
121 | 1f7d3f7d | René Nussbaumer | """Sets up our end so we can do the merger. |
122 | 1f7d3f7d | René Nussbaumer | |
123 | 1f7d3f7d | René Nussbaumer | This method is setting us up as a preparation for the merger. |
124 | 1f7d3f7d | René Nussbaumer | It makes the initial contact and gathers information needed. |
125 | 1f7d3f7d | René Nussbaumer | |
126 | 1f7d3f7d | René Nussbaumer | @raise errors.RemoteError: for errors in communication/grabbing |
127 | 1f7d3f7d | René Nussbaumer | |
128 | 1f7d3f7d | René Nussbaumer | """ |
129 | 1f7d3f7d | René Nussbaumer | (remote_path, _, _) = ssh.GetUserFiles("root") |
130 | 1f7d3f7d | René Nussbaumer | |
131 | be8aecab | Stephen Shirley | if self.cluster_name in self.clusters: |
132 | be8aecab | Stephen Shirley | raise errors.CommandError("Cannot merge cluster %s with itself" % |
133 | be8aecab | Stephen Shirley | self.cluster_name) |
134 | be8aecab | Stephen Shirley | |
135 | 1f7d3f7d | René Nussbaumer | # Fetch remotes private key |
136 | 1f7d3f7d | René Nussbaumer | for cluster in self.clusters: |
137 | 1f7d3f7d | René Nussbaumer | result = self._RunCmd(cluster, "cat %s" % remote_path, batch=False, |
138 | 1f7d3f7d | René Nussbaumer | ask_key=False) |
139 | 1f7d3f7d | René Nussbaumer | if result.failed: |
140 | 1f7d3f7d | René Nussbaumer | raise errors.RemoteError("There was an error while grabbing ssh private" |
141 | 1f7d3f7d | René Nussbaumer | " key from %s. Fail reason: %s; output: %s" % |
142 | 1f7d3f7d | René Nussbaumer | (cluster, result.fail_reason, result.output)) |
143 | 1f7d3f7d | René Nussbaumer | |
144 | c4feafe8 | Iustin Pop | key_path = utils.PathJoin(self.work_dir, cluster) |
145 | 1f7d3f7d | René Nussbaumer | utils.WriteFile(key_path, mode=0600, data=result.stdout) |
146 | 1f7d3f7d | René Nussbaumer | |
147 | 8697f0fa | Guido Trotter | result = self._RunCmd(cluster, "gnt-node list -o name,offline" |
148 | 8697f0fa | Guido Trotter | " --no-header --separator=,", private_key=key_path) |
149 | 1f7d3f7d | René Nussbaumer | if result.failed: |
150 | 1f7d3f7d | René Nussbaumer | raise errors.RemoteError("Unable to retrieve list of nodes from %s." |
151 | 1f7d3f7d | René Nussbaumer | " Fail reason: %s; output: %s" % |
152 | 1f7d3f7d | René Nussbaumer | (cluster, result.fail_reason, result.output)) |
153 | 8697f0fa | Guido Trotter | nodes_statuses = [line.split(',') for line in result.stdout.splitlines()] |
154 | 8697f0fa | Guido Trotter | nodes = [node_status[0] for node_status in nodes_statuses |
155 | 8697f0fa | Guido Trotter | if node_status[1] == "N"] |
156 | 1f7d3f7d | René Nussbaumer | |
157 | 1f7d3f7d | René Nussbaumer | result = self._RunCmd(cluster, "gnt-instance list -o name --no-header", |
158 | 1f7d3f7d | René Nussbaumer | private_key=key_path) |
159 | 1f7d3f7d | René Nussbaumer | if result.failed: |
160 | 1f7d3f7d | René Nussbaumer | raise errors.RemoteError("Unable to retrieve list of instances from" |
161 | 1f7d3f7d | René Nussbaumer | " %s. Fail reason: %s; output: %s" % |
162 | 1f7d3f7d | René Nussbaumer | (cluster, result.fail_reason, result.output)) |
163 | 1f7d3f7d | René Nussbaumer | instances = result.stdout.splitlines() |
164 | 1f7d3f7d | René Nussbaumer | |
165 | 1f7d3f7d | René Nussbaumer | self.merger_data.append(MergerData(cluster, key_path, nodes, instances)) |
166 | 1f7d3f7d | René Nussbaumer | |
167 | 8864d152 | Guido Trotter | def _PrepareAuthorizedKeys(self): |
168 | 8864d152 | Guido Trotter | """Prepare the authorized_keys on every merging node. |
169 | 1f7d3f7d | René Nussbaumer | |
170 | 1f7d3f7d | René Nussbaumer | This method add our public key to remotes authorized_key for further |
171 | 1f7d3f7d | René Nussbaumer | communication. |
172 | 1f7d3f7d | René Nussbaumer | |
173 | 1f7d3f7d | René Nussbaumer | """ |
174 | 1f7d3f7d | René Nussbaumer | (_, pub_key_file, auth_keys) = ssh.GetUserFiles("root") |
175 | 1f7d3f7d | René Nussbaumer | pub_key = utils.ReadFile(pub_key_file) |
176 | 1f7d3f7d | René Nussbaumer | |
177 | 8864d152 | Guido Trotter | for data in self.merger_data: |
178 | 8864d152 | Guido Trotter | for node in data.nodes: |
179 | 8864d152 | Guido Trotter | result = self._RunCmd(node, ("cat >> %s << '!EOF.'\n%s!EOF.\n" % |
180 | 8864d152 | Guido Trotter | (auth_keys, pub_key)), |
181 | 8864d152 | Guido Trotter | private_key=data.key_path) |
182 | 1f7d3f7d | René Nussbaumer | |
183 | 8864d152 | Guido Trotter | if result.failed: |
184 | 8864d152 | Guido Trotter | raise errors.RemoteError("Unable to add our public key to %s in %s." |
185 | 8864d152 | Guido Trotter | " Fail reason: %s; output: %s" % |
186 | 8864d152 | Guido Trotter | (node, data.cluster, result.fail_reason, |
187 | 8864d152 | Guido Trotter | result.output)) |
188 | 1f7d3f7d | René Nussbaumer | |
189 | 1f7d3f7d | René Nussbaumer | def _RunCmd(self, hostname, command, user="root", use_cluster_key=False, |
190 | 1f7d3f7d | René Nussbaumer | strict_host_check=False, private_key=None, batch=True, |
191 | 1f7d3f7d | René Nussbaumer | ask_key=False): |
192 | 1f7d3f7d | René Nussbaumer | """Wrapping SshRunner.Run with default parameters. |
193 | 1f7d3f7d | René Nussbaumer | |
194 | 454723b5 | Iustin Pop | For explanation of parameters see L{ganeti.ssh.SshRunner.Run}. |
195 | 1f7d3f7d | René Nussbaumer | |
196 | 1f7d3f7d | René Nussbaumer | """ |
197 | 1f7d3f7d | René Nussbaumer | return self.ssh_runner.Run(hostname=hostname, command=command, user=user, |
198 | 1f7d3f7d | René Nussbaumer | use_cluster_key=use_cluster_key, |
199 | 1f7d3f7d | René Nussbaumer | strict_host_check=strict_host_check, |
200 | 1f7d3f7d | René Nussbaumer | private_key=private_key, batch=batch, |
201 | 1f7d3f7d | René Nussbaumer | ask_key=ask_key) |
202 | 1f7d3f7d | René Nussbaumer | |
203 | 1f7d3f7d | René Nussbaumer | def _StopMergingInstances(self): |
204 | 1f7d3f7d | René Nussbaumer | """Stop instances on merging clusters. |
205 | 1f7d3f7d | René Nussbaumer | |
206 | 1f7d3f7d | René Nussbaumer | """ |
207 | 1f7d3f7d | René Nussbaumer | for cluster in self.clusters: |
208 | 1f7d3f7d | René Nussbaumer | result = self._RunCmd(cluster, "gnt-instance shutdown --all" |
209 | 1f7d3f7d | René Nussbaumer | " --force-multiple") |
210 | 1f7d3f7d | René Nussbaumer | |
211 | 1f7d3f7d | René Nussbaumer | if result.failed: |
212 | 1f7d3f7d | René Nussbaumer | raise errors.RemoteError("Unable to stop instances on %s." |
213 | 1f7d3f7d | René Nussbaumer | " Fail reason: %s; output: %s" % |
214 | 1f7d3f7d | René Nussbaumer | (cluster, result.fail_reason, result.output)) |
215 | 1f7d3f7d | René Nussbaumer | |
216 | 1f7d3f7d | René Nussbaumer | def _DisableWatcher(self): |
217 | 1f7d3f7d | René Nussbaumer | """Disable watch on all merging clusters, including ourself. |
218 | 1f7d3f7d | René Nussbaumer | |
219 | 1f7d3f7d | René Nussbaumer | """ |
220 | 1f7d3f7d | René Nussbaumer | for cluster in ["localhost"] + self.clusters: |
221 | 1f7d3f7d | René Nussbaumer | result = self._RunCmd(cluster, "gnt-cluster watcher pause %d" % |
222 | 1f7d3f7d | René Nussbaumer | self.pause_period) |
223 | 1f7d3f7d | René Nussbaumer | |
224 | 1f7d3f7d | René Nussbaumer | if result.failed: |
225 | 1f7d3f7d | René Nussbaumer | raise errors.RemoteError("Unable to pause watcher on %s." |
226 | 1f7d3f7d | René Nussbaumer | " Fail reason: %s; output: %s" % |
227 | 1f7d3f7d | René Nussbaumer | (cluster, result.fail_reason, result.output)) |
228 | 1f7d3f7d | René Nussbaumer | |
229 | 1f7d3f7d | René Nussbaumer | def _StopDaemons(self): |
230 | 1f7d3f7d | René Nussbaumer | """Stop all daemons on merging nodes. |
231 | 1f7d3f7d | René Nussbaumer | |
232 | 1f7d3f7d | René Nussbaumer | """ |
233 | d8aab233 | René Nussbaumer | cmd = "%s stop-all" % constants.DAEMON_UTIL |
234 | 1f7d3f7d | René Nussbaumer | for data in self.merger_data: |
235 | 1f7d3f7d | René Nussbaumer | for node in data.nodes: |
236 | d8aab233 | René Nussbaumer | result = self._RunCmd(node, cmd) |
237 | 1f7d3f7d | René Nussbaumer | |
238 | 1f7d3f7d | René Nussbaumer | if result.failed: |
239 | 1f7d3f7d | René Nussbaumer | raise errors.RemoteError("Unable to stop daemons on %s." |
240 | 1f7d3f7d | René Nussbaumer | " Fail reason: %s; output: %s." % |
241 | 1f7d3f7d | René Nussbaumer | (node, result.fail_reason, result.output)) |
242 | 1f7d3f7d | René Nussbaumer | |
243 | 1f7d3f7d | René Nussbaumer | def _FetchRemoteConfig(self): |
244 | 1f7d3f7d | René Nussbaumer | """Fetches and stores remote cluster config from the master. |
245 | 1f7d3f7d | René Nussbaumer | |
246 | 1f7d3f7d | René Nussbaumer | This step is needed before we can merge the config. |
247 | 1f7d3f7d | René Nussbaumer | |
248 | 1f7d3f7d | René Nussbaumer | """ |
249 | 1f7d3f7d | René Nussbaumer | for data in self.merger_data: |
250 | 1f7d3f7d | René Nussbaumer | result = self._RunCmd(data.cluster, "cat %s" % |
251 | 1f7d3f7d | René Nussbaumer | constants.CLUSTER_CONF_FILE) |
252 | 1f7d3f7d | René Nussbaumer | |
253 | 1f7d3f7d | René Nussbaumer | if result.failed: |
254 | 1f7d3f7d | René Nussbaumer | raise errors.RemoteError("Unable to retrieve remote config on %s." |
255 | 1f7d3f7d | René Nussbaumer | " Fail reason: %s; output %s" % |
256 | 1f7d3f7d | René Nussbaumer | (data.cluster, result.fail_reason, |
257 | 1f7d3f7d | René Nussbaumer | result.output)) |
258 | 1f7d3f7d | René Nussbaumer | |
259 | c4feafe8 | Iustin Pop | data.config_path = utils.PathJoin(self.work_dir, "%s_config.data" % |
260 | c4feafe8 | Iustin Pop | data.cluster) |
261 | 1f7d3f7d | René Nussbaumer | utils.WriteFile(data.config_path, data=result.stdout) |
262 | 1f7d3f7d | René Nussbaumer | |
263 | 1f7d3f7d | René Nussbaumer | # R0201: Method could be a function |
264 | 1f7d3f7d | René Nussbaumer | def _KillMasterDaemon(self): # pylint: disable-msg=R0201 |
265 | 1f7d3f7d | René Nussbaumer | """Kills the local master daemon. |
266 | 1f7d3f7d | René Nussbaumer | |
267 | 1f7d3f7d | René Nussbaumer | @raise errors.CommandError: If unable to kill |
268 | 1f7d3f7d | René Nussbaumer | |
269 | 1f7d3f7d | René Nussbaumer | """ |
270 | 1f7d3f7d | René Nussbaumer | result = utils.RunCmd([constants.DAEMON_UTIL, "stop-master"]) |
271 | 1f7d3f7d | René Nussbaumer | if result.failed: |
272 | 1f7d3f7d | René Nussbaumer | raise errors.CommandError("Unable to stop master daemons." |
273 | 1f7d3f7d | René Nussbaumer | " Fail reason: %s; output: %s" % |
274 | 1f7d3f7d | René Nussbaumer | (result.fail_reason, result.output)) |
275 | 1f7d3f7d | René Nussbaumer | |
276 | 1f7d3f7d | René Nussbaumer | def _MergeConfig(self): |
277 | 1f7d3f7d | René Nussbaumer | """Merges all foreign config into our own config. |
278 | 1f7d3f7d | René Nussbaumer | |
279 | 1f7d3f7d | René Nussbaumer | """ |
280 | 1f7d3f7d | René Nussbaumer | my_config = config.ConfigWriter(offline=True) |
281 | 1f7d3f7d | René Nussbaumer | fake_ec_id = 0 # Needs to be uniq over the whole config merge |
282 | 1f7d3f7d | René Nussbaumer | |
283 | 1f7d3f7d | René Nussbaumer | for data in self.merger_data: |
284 | e1ab08db | Stephen Shirley | other_config = config.ConfigWriter(data.config_path, accept_foreign=True) |
285 | a6c8fd10 | Stephen Shirley | self._MergeClusterConfigs(my_config, other_config) |
286 | 8f44674f | Stephen Shirley | self._MergeNodeGroups(my_config, other_config) |
287 | 1f7d3f7d | René Nussbaumer | |
288 | 1f7d3f7d | René Nussbaumer | for node in other_config.GetNodeList(): |
289 | 1f7d3f7d | René Nussbaumer | node_info = other_config.GetNodeInfo(node) |
290 | 8864d152 | Guido Trotter | my_config.AddNode(node_info, _CLUSTERMERGE_ECID + str(fake_ec_id)) |
291 | 1f7d3f7d | René Nussbaumer | fake_ec_id += 1 |
292 | 1f7d3f7d | René Nussbaumer | |
293 | 1f7d3f7d | René Nussbaumer | for instance in other_config.GetInstanceList(): |
294 | 1f7d3f7d | René Nussbaumer | instance_info = other_config.GetInstanceInfo(instance) |
295 | 1f7d3f7d | René Nussbaumer | |
296 | 1f7d3f7d | René Nussbaumer | # Update the DRBD port assignments |
297 | 1f7d3f7d | René Nussbaumer | # This is a little bit hackish |
298 | 1f7d3f7d | René Nussbaumer | for dsk in instance_info.disks: |
299 | 1f7d3f7d | René Nussbaumer | if dsk.dev_type in constants.LDS_DRBD: |
300 | 1f7d3f7d | René Nussbaumer | port = my_config.AllocatePort() |
301 | 1f7d3f7d | René Nussbaumer | |
302 | 1f7d3f7d | René Nussbaumer | logical_id = list(dsk.logical_id) |
303 | 1f7d3f7d | René Nussbaumer | logical_id[2] = port |
304 | 1f7d3f7d | René Nussbaumer | dsk.logical_id = tuple(logical_id) |
305 | 1f7d3f7d | René Nussbaumer | |
306 | 1f7d3f7d | René Nussbaumer | physical_id = list(dsk.physical_id) |
307 | 1f7d3f7d | René Nussbaumer | physical_id[1] = physical_id[3] = port |
308 | 1f7d3f7d | René Nussbaumer | dsk.physical_id = tuple(physical_id) |
309 | 1f7d3f7d | René Nussbaumer | |
310 | a536aaac | Stephen Shirley | my_config.AddInstance(instance_info, |
311 | a536aaac | Stephen Shirley | _CLUSTERMERGE_ECID + str(fake_ec_id)) |
312 | 1f7d3f7d | René Nussbaumer | fake_ec_id += 1 |
313 | 1f7d3f7d | René Nussbaumer | |
314 | 1f7d3f7d | René Nussbaumer | # R0201: Method could be a function |
315 | a6c8fd10 | Stephen Shirley | def _MergeClusterConfigs(self, my_config, other_config): |
316 | a6c8fd10 | Stephen Shirley | """Checks that all relevant cluster parameters are compatible |
317 | a6c8fd10 | Stephen Shirley | |
318 | a6c8fd10 | Stephen Shirley | """ |
319 | a6c8fd10 | Stephen Shirley | # pylint: disable-msg=R0201 |
320 | a6c8fd10 | Stephen Shirley | my_cluster = my_config.GetClusterInfo() |
321 | a6c8fd10 | Stephen Shirley | other_cluster = other_config.GetClusterInfo() |
322 | a6c8fd10 | Stephen Shirley | err_count = 0 |
323 | a6c8fd10 | Stephen Shirley | |
324 | a6c8fd10 | Stephen Shirley | # |
325 | a6c8fd10 | Stephen Shirley | # Generic checks |
326 | a6c8fd10 | Stephen Shirley | # |
327 | a6c8fd10 | Stephen Shirley | check_params = ( |
328 | a6c8fd10 | Stephen Shirley | "beparams", |
329 | a6c8fd10 | Stephen Shirley | "default_iallocator", |
330 | a6c8fd10 | Stephen Shirley | "drbd_usermode_helper", |
331 | a6c8fd10 | Stephen Shirley | "file_storage_dir", |
332 | a6c8fd10 | Stephen Shirley | "hidden_os", |
333 | a6c8fd10 | Stephen Shirley | "maintain_node_health", |
334 | a6c8fd10 | Stephen Shirley | "master_netdev", |
335 | a6c8fd10 | Stephen Shirley | "ndparams", |
336 | a6c8fd10 | Stephen Shirley | "nicparams", |
337 | a6c8fd10 | Stephen Shirley | "primary_ip_family", |
338 | a6c8fd10 | Stephen Shirley | "tags", |
339 | a6c8fd10 | Stephen Shirley | "uid_pool", |
340 | a6c8fd10 | Stephen Shirley | "volume_group_name", |
341 | a6c8fd10 | Stephen Shirley | ) |
342 | a6c8fd10 | Stephen Shirley | for param_name in check_params: |
343 | a6c8fd10 | Stephen Shirley | my_param = getattr(my_cluster, param_name) |
344 | a6c8fd10 | Stephen Shirley | other_param = getattr(other_cluster, param_name) |
345 | a6c8fd10 | Stephen Shirley | if my_param != other_param: |
346 | a6c8fd10 | Stephen Shirley | logging.error("The value (%s) of the cluster parameter %s on %s" |
347 | a6c8fd10 | Stephen Shirley | " differs to this cluster's value (%s)", |
348 | a6c8fd10 | Stephen Shirley | other_param, param_name, other_cluster.cluster_name, |
349 | a6c8fd10 | Stephen Shirley | my_param) |
350 | a6c8fd10 | Stephen Shirley | err_count += 1 |
351 | a6c8fd10 | Stephen Shirley | |
352 | a6c8fd10 | Stephen Shirley | # |
353 | a6c8fd10 | Stephen Shirley | # Custom checks |
354 | a6c8fd10 | Stephen Shirley | # |
355 | a6c8fd10 | Stephen Shirley | |
356 | a6c8fd10 | Stephen Shirley | # Check default hypervisor |
357 | a6c8fd10 | Stephen Shirley | my_defhyp = my_cluster.enabled_hypervisors[0] |
358 | a6c8fd10 | Stephen Shirley | other_defhyp = other_cluster.enabled_hypervisors[0] |
359 | a6c8fd10 | Stephen Shirley | if my_defhyp != other_defhyp: |
360 | a6c8fd10 | Stephen Shirley | logging.warning("The default hypervisor (%s) differs on %s, new" |
361 | a6c8fd10 | Stephen Shirley | " instances will be created with this cluster's" |
362 | a6c8fd10 | Stephen Shirley | " default hypervisor (%s)", other_defhyp, |
363 | a6c8fd10 | Stephen Shirley | other_cluster.cluster_name, my_defhyp) |
364 | a6c8fd10 | Stephen Shirley | |
365 | a6c8fd10 | Stephen Shirley | if (set(my_cluster.enabled_hypervisors) != |
366 | a6c8fd10 | Stephen Shirley | set(other_cluster.enabled_hypervisors)): |
367 | a6c8fd10 | Stephen Shirley | logging.error("The set of enabled hypervisors (%s) on %s differs to" |
368 | a6c8fd10 | Stephen Shirley | " this cluster's set (%s)", |
369 | a6c8fd10 | Stephen Shirley | other_cluster.enabled_hypervisors, |
370 | a6c8fd10 | Stephen Shirley | other_cluster.cluster_name, my_cluster.enabled_hypervisors) |
371 | a6c8fd10 | Stephen Shirley | err_count += 1 |
372 | a6c8fd10 | Stephen Shirley | |
373 | a6c8fd10 | Stephen Shirley | # Check hypervisor params for hypervisors we care about |
374 | a6c8fd10 | Stephen Shirley | # TODO: we probably don't care about all params for a given hypervisor |
375 | a6c8fd10 | Stephen Shirley | for hyp in my_cluster.enabled_hypervisors: |
376 | a6c8fd10 | Stephen Shirley | for param in my_cluster.hvparams[hyp]: |
377 | a6c8fd10 | Stephen Shirley | my_value = my_cluster.hvparams[hyp][param] |
378 | a6c8fd10 | Stephen Shirley | other_value = other_cluster.hvparams[hyp][param] |
379 | a6c8fd10 | Stephen Shirley | if my_value != other_value: |
380 | a6c8fd10 | Stephen Shirley | logging.error("The value (%s) of the %s parameter of the %s" |
381 | a6c8fd10 | Stephen Shirley | " hypervisor on %s differs to this cluster's parameter" |
382 | a6c8fd10 | Stephen Shirley | " (%s)", |
383 | a6c8fd10 | Stephen Shirley | other_value, param, hyp, other_cluster.cluster_name, |
384 | a6c8fd10 | Stephen Shirley | my_value) |
385 | a6c8fd10 | Stephen Shirley | err_count += 1 |
386 | a6c8fd10 | Stephen Shirley | |
387 | a6c8fd10 | Stephen Shirley | # Check os hypervisor params for hypervisors we care about |
388 | a6c8fd10 | Stephen Shirley | for os_name in set(my_cluster.os_hvp.keys() + other_cluster.os_hvp.keys()): |
389 | a6c8fd10 | Stephen Shirley | for hyp in my_cluster.enabled_hypervisors: |
390 | a6c8fd10 | Stephen Shirley | my_os_hvp = self._GetOsHypervisor(my_cluster, os_name, hyp) |
391 | a6c8fd10 | Stephen Shirley | other_os_hvp = self._GetOsHypervisor(other_cluster, os_name, hyp) |
392 | a6c8fd10 | Stephen Shirley | if my_os_hvp != other_os_hvp: |
393 | a6c8fd10 | Stephen Shirley | logging.error("The OS parameters (%s) for the %s OS for the %s" |
394 | a6c8fd10 | Stephen Shirley | " hypervisor on %s differs to this cluster's parameters" |
395 | a6c8fd10 | Stephen Shirley | " (%s)", |
396 | a6c8fd10 | Stephen Shirley | other_os_hvp, os_name, hyp, other_cluster.cluster_name, |
397 | a6c8fd10 | Stephen Shirley | my_os_hvp) |
398 | a6c8fd10 | Stephen Shirley | err_count += 1 |
399 | a6c8fd10 | Stephen Shirley | |
400 | a6c8fd10 | Stephen Shirley | # |
401 | a6c8fd10 | Stephen Shirley | # Warnings |
402 | a6c8fd10 | Stephen Shirley | # |
403 | a6c8fd10 | Stephen Shirley | if my_cluster.modify_etc_hosts != other_cluster.modify_etc_hosts: |
404 | a6c8fd10 | Stephen Shirley | logging.warning("The modify_etc_hosts value (%s) differs on %s," |
405 | a6c8fd10 | Stephen Shirley | " this cluster's value (%s) will take precedence", |
406 | a6c8fd10 | Stephen Shirley | other_cluster.modify_etc_hosts, |
407 | a6c8fd10 | Stephen Shirley | other_cluster.cluster_name, |
408 | a6c8fd10 | Stephen Shirley | my_cluster.modify_etc_hosts) |
409 | a6c8fd10 | Stephen Shirley | |
410 | a6c8fd10 | Stephen Shirley | if my_cluster.modify_ssh_setup != other_cluster.modify_ssh_setup: |
411 | a6c8fd10 | Stephen Shirley | logging.warning("The modify_ssh_setup value (%s) differs on %s," |
412 | a6c8fd10 | Stephen Shirley | " this cluster's value (%s) will take precedence", |
413 | a6c8fd10 | Stephen Shirley | other_cluster.modify_ssh_setup, |
414 | a6c8fd10 | Stephen Shirley | other_cluster.cluster_name, |
415 | a6c8fd10 | Stephen Shirley | my_cluster.modify_ssh_setup) |
416 | a6c8fd10 | Stephen Shirley | |
417 | a6c8fd10 | Stephen Shirley | # |
418 | a6c8fd10 | Stephen Shirley | # Actual merging |
419 | a6c8fd10 | Stephen Shirley | # |
420 | a6c8fd10 | Stephen Shirley | my_cluster.reserved_lvs = list(set(my_cluster.reserved_lvs + |
421 | a6c8fd10 | Stephen Shirley | other_cluster.reserved_lvs)) |
422 | a6c8fd10 | Stephen Shirley | |
423 | a6c8fd10 | Stephen Shirley | if my_cluster.prealloc_wipe_disks != other_cluster.prealloc_wipe_disks: |
424 | a6c8fd10 | Stephen Shirley | logging.warning("The prealloc_wipe_disks value (%s) on %s differs to this" |
425 | a6c8fd10 | Stephen Shirley | " cluster's value (%s). The least permissive value (%s)" |
426 | a6c8fd10 | Stephen Shirley | " will be used", other_cluster.prealloc_wipe_disks, |
427 | a6c8fd10 | Stephen Shirley | other_cluster.cluster_name, |
428 | a6c8fd10 | Stephen Shirley | my_cluster.prealloc_wipe_disks, True) |
429 | a6c8fd10 | Stephen Shirley | my_cluster.prealloc_wipe_disks = True |
430 | a6c8fd10 | Stephen Shirley | |
431 | a6c8fd10 | Stephen Shirley | for os_, osparams in other_cluster.osparams.items(): |
432 | a6c8fd10 | Stephen Shirley | if os_ not in my_cluster.osparams: |
433 | a6c8fd10 | Stephen Shirley | my_cluster.osparams[os_] = osparams |
434 | a6c8fd10 | Stephen Shirley | elif my_cluster.osparams[os_] != osparams: |
435 | a6c8fd10 | Stephen Shirley | logging.error("The OS parameters (%s) for the %s OS on %s differs to" |
436 | a6c8fd10 | Stephen Shirley | " this cluster's parameters (%s)", |
437 | a6c8fd10 | Stephen Shirley | osparams, os_, other_cluster.cluster_name, |
438 | a6c8fd10 | Stephen Shirley | my_cluster.osparams[os_]) |
439 | a6c8fd10 | Stephen Shirley | err_count += 1 |
440 | a6c8fd10 | Stephen Shirley | |
441 | a6c8fd10 | Stephen Shirley | if err_count: |
442 | a6c8fd10 | Stephen Shirley | raise errors.ConfigurationError("Cluster config for %s has incompatible" |
443 | a6c8fd10 | Stephen Shirley | " values, please fix and re-run" % |
444 | a6c8fd10 | Stephen Shirley | other_cluster.cluster_name) |
445 | a6c8fd10 | Stephen Shirley | |
446 | a6c8fd10 | Stephen Shirley | # R0201: Method could be a function |
447 | a6c8fd10 | Stephen Shirley | def _GetOsHypervisor(self, cluster, os_name, hyp): # pylint: disable-msg=R0201 |
448 | a6c8fd10 | Stephen Shirley | if os_name in cluster.os_hvp: |
449 | a6c8fd10 | Stephen Shirley | return cluster.os_hvp[os_name].get(hyp, None) |
450 | a6c8fd10 | Stephen Shirley | else: |
451 | a6c8fd10 | Stephen Shirley | return None |
452 | a6c8fd10 | Stephen Shirley | |
453 | a6c8fd10 | Stephen Shirley | # R0201: Method could be a function |
454 | 8f44674f | Stephen Shirley | def _MergeNodeGroups(self, my_config, other_config): |
455 | 8f44674f | Stephen Shirley | """Adds foreign node groups |
456 | 8f44674f | Stephen Shirley | |
457 | 8f44674f | Stephen Shirley | ConfigWriter.AddNodeGroup takes care of making sure there are no conflicts. |
458 | 8f44674f | Stephen Shirley | """ |
459 | 8f44674f | Stephen Shirley | # pylint: disable-msg=R0201 |
460 | 9b945588 | Stephen Shirley | logging.info("Node group conflict strategy: %s", self.groups) |
461 | 1a615be0 | Stephen Shirley | |
462 | 1a615be0 | Stephen Shirley | my_grps = my_config.GetAllNodeGroupsInfo().values() |
463 | 1a615be0 | Stephen Shirley | other_grps = other_config.GetAllNodeGroupsInfo().values() |
464 | 1a615be0 | Stephen Shirley | |
465 | 1a615be0 | Stephen Shirley | # Check for node group naming conflicts: |
466 | 1a615be0 | Stephen Shirley | conflicts = [] |
467 | 1a615be0 | Stephen Shirley | for other_grp in other_grps: |
468 | 1a615be0 | Stephen Shirley | for my_grp in my_grps: |
469 | 1a615be0 | Stephen Shirley | if other_grp.name == my_grp.name: |
470 | 1a615be0 | Stephen Shirley | conflicts.append(other_grp) |
471 | 1a615be0 | Stephen Shirley | |
472 | 1a615be0 | Stephen Shirley | if conflicts: |
473 | 1a615be0 | Stephen Shirley | conflict_names = utils.CommaJoin([g.name for g in conflicts]) |
474 | 9b945588 | Stephen Shirley | logging.info("Node groups in both local and remote cluster: %s", |
475 | 1a615be0 | Stephen Shirley | conflict_names) |
476 | 1a615be0 | Stephen Shirley | |
477 | 1a615be0 | Stephen Shirley | # User hasn't specified how to handle conflicts |
478 | 1a615be0 | Stephen Shirley | if not self.groups: |
479 | 1a615be0 | Stephen Shirley | raise errors.CommandError("The following node group(s) are in both" |
480 | 1a615be0 | Stephen Shirley | " clusters, and no merge strategy has been" |
481 | 1a615be0 | Stephen Shirley | " supplied (see the --groups option): %s" % |
482 | 1a615be0 | Stephen Shirley | conflict_names) |
483 | 1a615be0 | Stephen Shirley | |
484 | 1a615be0 | Stephen Shirley | # User wants to rename conflicts |
485 | 3a969900 | Stephen Shirley | elif self.groups == _GROUPS_RENAME: |
486 | 1a615be0 | Stephen Shirley | for grp in conflicts: |
487 | 1a615be0 | Stephen Shirley | new_name = "%s-%s" % (grp.name, other_config.GetClusterName()) |
488 | 1a615be0 | Stephen Shirley | logging.info("Renaming remote node group from %s to %s" |
489 | 9b945588 | Stephen Shirley | " to resolve conflict", grp.name, new_name) |
490 | 1a615be0 | Stephen Shirley | grp.name = new_name |
491 | 1a615be0 | Stephen Shirley | |
492 | 3a969900 | Stephen Shirley | # User wants to merge conflicting groups |
493 | 3a969900 | Stephen Shirley | elif self.groups == 'merge': |
494 | 3a969900 | Stephen Shirley | for other_grp in conflicts: |
495 | 9b945588 | Stephen Shirley | logging.info("Merging local and remote '%s' groups", other_grp.name) |
496 | 3a969900 | Stephen Shirley | for node_name in other_grp.members[:]: |
497 | 3a969900 | Stephen Shirley | node = other_config.GetNodeInfo(node_name) |
498 | 9b945588 | Stephen Shirley | # Access to a protected member of a client class |
499 | 9b945588 | Stephen Shirley | # pylint: disable-msg=W0212 |
500 | 3a969900 | Stephen Shirley | other_config._UnlockedRemoveNodeFromGroup(node) |
501 | 3a969900 | Stephen Shirley | |
502 | 9b945588 | Stephen Shirley | # Access to a protected member of a client class |
503 | 9b945588 | Stephen Shirley | # pylint: disable-msg=W0212 |
504 | 3a969900 | Stephen Shirley | my_grp_uuid = my_config._UnlockedLookupNodeGroup(other_grp.name) |
505 | 9b945588 | Stephen Shirley | |
506 | 9b945588 | Stephen Shirley | # Access to a protected member of a client class |
507 | 9b945588 | Stephen Shirley | # pylint: disable-msg=W0212 |
508 | 3a969900 | Stephen Shirley | my_config._UnlockedAddNodeToGroup(node, my_grp_uuid) |
509 | 3a969900 | Stephen Shirley | node.group = my_grp_uuid |
510 | 3a969900 | Stephen Shirley | # Remove from list of groups to add |
511 | 3a969900 | Stephen Shirley | other_grps.remove(other_grp) |
512 | 3a969900 | Stephen Shirley | |
513 | 1a615be0 | Stephen Shirley | for grp in other_grps: |
514 | 8f44674f | Stephen Shirley | #TODO: handle node group conflicts |
515 | 8f44674f | Stephen Shirley | my_config.AddNodeGroup(grp, _CLUSTERMERGE_ECID) |
516 | 8f44674f | Stephen Shirley | |
517 | 8f44674f | Stephen Shirley | # R0201: Method could be a function |
518 | 1f7d3f7d | René Nussbaumer | def _StartMasterDaemon(self, no_vote=False): # pylint: disable-msg=R0201 |
519 | 1f7d3f7d | René Nussbaumer | """Starts the local master daemon. |
520 | 1f7d3f7d | René Nussbaumer | |
521 | 1f7d3f7d | René Nussbaumer | @param no_vote: Should the masterd started without voting? default: False |
522 | 1f7d3f7d | René Nussbaumer | @raise errors.CommandError: If unable to start daemon. |
523 | 1f7d3f7d | René Nussbaumer | |
524 | 1f7d3f7d | René Nussbaumer | """ |
525 | 1f7d3f7d | René Nussbaumer | env = {} |
526 | 1f7d3f7d | René Nussbaumer | if no_vote: |
527 | 1f7d3f7d | René Nussbaumer | env["EXTRA_MASTERD_ARGS"] = "--no-voting --yes-do-it" |
528 | 1f7d3f7d | René Nussbaumer | |
529 | 1f7d3f7d | René Nussbaumer | result = utils.RunCmd([constants.DAEMON_UTIL, "start-master"], env=env) |
530 | 1f7d3f7d | René Nussbaumer | if result.failed: |
531 | 1f7d3f7d | René Nussbaumer | raise errors.CommandError("Couldn't start ganeti master." |
532 | 1f7d3f7d | René Nussbaumer | " Fail reason: %s; output: %s" % |
533 | 1f7d3f7d | René Nussbaumer | (result.fail_reason, result.output)) |
534 | 1f7d3f7d | René Nussbaumer | |
535 | 1f7d3f7d | René Nussbaumer | def _ReaddMergedNodesAndRedist(self): |
536 | 1f7d3f7d | René Nussbaumer | """Readds all merging nodes and make sure their config is up-to-date. |
537 | 1f7d3f7d | René Nussbaumer | |
538 | 1f7d3f7d | René Nussbaumer | @raise errors.CommandError: If anything fails. |
539 | 1f7d3f7d | René Nussbaumer | |
540 | 1f7d3f7d | René Nussbaumer | """ |
541 | 1f7d3f7d | René Nussbaumer | for data in self.merger_data: |
542 | 1f7d3f7d | René Nussbaumer | for node in data.nodes: |
543 | 1f7d3f7d | René Nussbaumer | result = utils.RunCmd(["gnt-node", "add", "--readd", |
544 | 53991408 | Stephen Shirley | "--no-ssh-key-check", "--force-join", node]) |
545 | 1f7d3f7d | René Nussbaumer | if result.failed: |
546 | 1f7d3f7d | René Nussbaumer | raise errors.CommandError("Couldn't readd node %s. Fail reason: %s;" |
547 | 1f7d3f7d | René Nussbaumer | " output: %s" % (node, result.fail_reason, |
548 | 1f7d3f7d | René Nussbaumer | result.output)) |
549 | 1f7d3f7d | René Nussbaumer | |
550 | 1f7d3f7d | René Nussbaumer | result = utils.RunCmd(["gnt-cluster", "redist-conf"]) |
551 | 1f7d3f7d | René Nussbaumer | if result.failed: |
552 | 1f7d3f7d | René Nussbaumer | raise errors.CommandError("Redistribution failed. Fail reason: %s;" |
553 | 1f7d3f7d | René Nussbaumer | " output: %s" % (result.fail_reason, |
554 | 1f7d3f7d | René Nussbaumer | result.output)) |
555 | 1f7d3f7d | René Nussbaumer | |
556 | 1f7d3f7d | René Nussbaumer | # R0201: Method could be a function |
557 | 1f7d3f7d | René Nussbaumer | def _StartupAllInstances(self): # pylint: disable-msg=R0201 |
558 | 1f7d3f7d | René Nussbaumer | """Starts up all instances (locally). |
559 | 1f7d3f7d | René Nussbaumer | |
560 | 1f7d3f7d | René Nussbaumer | @raise errors.CommandError: If unable to start clusters |
561 | 1f7d3f7d | René Nussbaumer | |
562 | 1f7d3f7d | René Nussbaumer | """ |
563 | 1f7d3f7d | René Nussbaumer | result = utils.RunCmd(["gnt-instance", "startup", "--all", |
564 | 1f7d3f7d | René Nussbaumer | "--force-multiple"]) |
565 | 1f7d3f7d | René Nussbaumer | if result.failed: |
566 | 1f7d3f7d | René Nussbaumer | raise errors.CommandError("Unable to start all instances." |
567 | 1f7d3f7d | René Nussbaumer | " Fail reason: %s; output: %s" % |
568 | 1f7d3f7d | René Nussbaumer | (result.fail_reason, result.output)) |
569 | 1f7d3f7d | René Nussbaumer | |
570 | 1f7d3f7d | René Nussbaumer | # R0201: Method could be a function |
571 | 1f7d3f7d | René Nussbaumer | def _VerifyCluster(self): # pylint: disable-msg=R0201 |
572 | 1f7d3f7d | René Nussbaumer | """Runs gnt-cluster verify to verify the health. |
573 | 1f7d3f7d | René Nussbaumer | |
574 | 1f7d3f7d | René Nussbaumer | @raise errors.ProgrammError: If cluster fails on verification |
575 | 1f7d3f7d | René Nussbaumer | |
576 | 1f7d3f7d | René Nussbaumer | """ |
577 | 1f7d3f7d | René Nussbaumer | result = utils.RunCmd(["gnt-cluster", "verify"]) |
578 | 1f7d3f7d | René Nussbaumer | if result.failed: |
579 | 1f7d3f7d | René Nussbaumer | raise errors.CommandError("Verification of cluster failed." |
580 | 1f7d3f7d | René Nussbaumer | " Fail reason: %s; output: %s" % |
581 | 1f7d3f7d | René Nussbaumer | (result.fail_reason, result.output)) |
582 | 1f7d3f7d | René Nussbaumer | |
583 | 1f7d3f7d | René Nussbaumer | def Merge(self): |
584 | 1f7d3f7d | René Nussbaumer | """Does the actual merge. |
585 | 1f7d3f7d | René Nussbaumer | |
586 | 1f7d3f7d | René Nussbaumer | It runs all the steps in the right order and updates the user about steps |
587 | 1f7d3f7d | René Nussbaumer | taken. Also it keeps track of rollback_steps to undo everything. |
588 | 1f7d3f7d | René Nussbaumer | |
589 | 1f7d3f7d | René Nussbaumer | """ |
590 | 1f7d3f7d | René Nussbaumer | rbsteps = [] |
591 | 1f7d3f7d | René Nussbaumer | try: |
592 | 1f7d3f7d | René Nussbaumer | logging.info("Pre cluster verification") |
593 | 1f7d3f7d | René Nussbaumer | self._VerifyCluster() |
594 | 1f7d3f7d | René Nussbaumer | |
595 | 8864d152 | Guido Trotter | logging.info("Prepare authorized_keys") |
596 | 8864d152 | Guido Trotter | rbsteps.append("Remove our key from authorized_keys on nodes:" |
597 | 8864d152 | Guido Trotter | " %(nodes)s") |
598 | 8864d152 | Guido Trotter | self._PrepareAuthorizedKeys() |
599 | 8864d152 | Guido Trotter | |
600 | 1f7d3f7d | René Nussbaumer | rbsteps.append("Start all instances again on the merging" |
601 | 1f7d3f7d | René Nussbaumer | " clusters: %(clusters)s") |
602 | 1f7d3f7d | René Nussbaumer | logging.info("Stopping merging instances (takes a while)") |
603 | 1f7d3f7d | René Nussbaumer | self._StopMergingInstances() |
604 | 1f7d3f7d | René Nussbaumer | |
605 | 1f7d3f7d | René Nussbaumer | logging.info("Disable watcher") |
606 | 1f7d3f7d | René Nussbaumer | self._DisableWatcher() |
607 | 1f7d3f7d | René Nussbaumer | logging.info("Stop daemons on merging nodes") |
608 | 1f7d3f7d | René Nussbaumer | self._StopDaemons() |
609 | 1f7d3f7d | René Nussbaumer | logging.info("Merging config") |
610 | 1f7d3f7d | René Nussbaumer | self._FetchRemoteConfig() |
611 | d8aab233 | René Nussbaumer | |
612 | 9c03a67a | Stephen Shirley | logging.info("Stopping master daemon") |
613 | 9c03a67a | Stephen Shirley | self._KillMasterDaemon() |
614 | 9c03a67a | Stephen Shirley | |
615 | 9c03a67a | Stephen Shirley | rbsteps.append("Restore %s from another master candidate" |
616 | 9c03a67a | Stephen Shirley | " and restart master daemon" % |
617 | 9c03a67a | Stephen Shirley | constants.CLUSTER_CONF_FILE) |
618 | 9c03a67a | Stephen Shirley | self._MergeConfig() |
619 | 9c03a67a | Stephen Shirley | self._StartMasterDaemon(no_vote=True) |
620 | 9c03a67a | Stephen Shirley | |
621 | 9c03a67a | Stephen Shirley | # Point of no return, delete rbsteps |
622 | 9c03a67a | Stephen Shirley | del rbsteps[:] |
623 | 9c03a67a | Stephen Shirley | |
624 | 9c03a67a | Stephen Shirley | logging.warning("We are at the point of no return. Merge can not easily" |
625 | 9c03a67a | Stephen Shirley | " be undone after this point.") |
626 | 9c03a67a | Stephen Shirley | logging.info("Readd nodes") |
627 | 9c03a67a | Stephen Shirley | self._ReaddMergedNodesAndRedist() |
628 | 9c03a67a | Stephen Shirley | |
629 | 9c03a67a | Stephen Shirley | logging.info("Merge done, restart master daemon normally") |
630 | 9c03a67a | Stephen Shirley | self._KillMasterDaemon() |
631 | 9c03a67a | Stephen Shirley | self._StartMasterDaemon() |
632 | d8aab233 | René Nussbaumer | |
633 | 1f7d3f7d | René Nussbaumer | logging.info("Starting instances again") |
634 | 1f7d3f7d | René Nussbaumer | self._StartupAllInstances() |
635 | 1f7d3f7d | René Nussbaumer | logging.info("Post cluster verification") |
636 | 1f7d3f7d | René Nussbaumer | self._VerifyCluster() |
637 | 1f7d3f7d | René Nussbaumer | except errors.GenericError, e: |
638 | 1f7d3f7d | René Nussbaumer | logging.exception(e) |
639 | 1f7d3f7d | René Nussbaumer | |
640 | 1f7d3f7d | René Nussbaumer | if rbsteps: |
641 | 1f7d3f7d | René Nussbaumer | nodes = Flatten([data.nodes for data in self.merger_data]) |
642 | 1f7d3f7d | René Nussbaumer | info = { |
643 | 1f7d3f7d | René Nussbaumer | "clusters": self.clusters, |
644 | 1f7d3f7d | René Nussbaumer | "nodes": nodes, |
645 | 1f7d3f7d | René Nussbaumer | } |
646 | 1f7d3f7d | René Nussbaumer | logging.critical("In order to rollback do the following:") |
647 | 1f7d3f7d | René Nussbaumer | for step in rbsteps: |
648 | 3f1cf151 | René Nussbaumer | logging.critical(" * %s", step % info) |
649 | 1f7d3f7d | René Nussbaumer | else: |
650 | 1f7d3f7d | René Nussbaumer | logging.critical("Nothing to rollback.") |
651 | 1f7d3f7d | René Nussbaumer | |
652 | 1f7d3f7d | René Nussbaumer | # TODO: Keep track of steps done for a flawless resume? |
653 | 1f7d3f7d | René Nussbaumer | |
654 | 1f7d3f7d | René Nussbaumer | def Cleanup(self): |
655 | 1f7d3f7d | René Nussbaumer | """Clean up our environment. |
656 | 1f7d3f7d | René Nussbaumer | |
657 | 1f7d3f7d | René Nussbaumer | This cleans up remote private keys and configs and after that |
658 | 1f7d3f7d | René Nussbaumer | deletes the temporary directory. |
659 | 1f7d3f7d | René Nussbaumer | |
660 | 1f7d3f7d | René Nussbaumer | """ |
661 | 1f7d3f7d | René Nussbaumer | shutil.rmtree(self.work_dir) |
662 | 1f7d3f7d | René Nussbaumer | |
663 | 1f7d3f7d | René Nussbaumer | |
664 | 1f7d3f7d | René Nussbaumer | def SetupLogging(options): |
665 | 1f7d3f7d | René Nussbaumer | """Setting up logging infrastructure. |
666 | 1f7d3f7d | René Nussbaumer | |
667 | 1f7d3f7d | René Nussbaumer | @param options: Parsed command line options |
668 | 1f7d3f7d | René Nussbaumer | |
669 | 1f7d3f7d | René Nussbaumer | """ |
670 | 1f7d3f7d | René Nussbaumer | formatter = logging.Formatter("%(asctime)s: %(levelname)s %(message)s") |
671 | 1f7d3f7d | René Nussbaumer | |
672 | 1f7d3f7d | René Nussbaumer | stderr_handler = logging.StreamHandler() |
673 | 1f7d3f7d | René Nussbaumer | stderr_handler.setFormatter(formatter) |
674 | 1f7d3f7d | René Nussbaumer | if options.debug: |
675 | 1f7d3f7d | René Nussbaumer | stderr_handler.setLevel(logging.NOTSET) |
676 | 1f7d3f7d | René Nussbaumer | elif options.verbose: |
677 | 1f7d3f7d | René Nussbaumer | stderr_handler.setLevel(logging.INFO) |
678 | 1f7d3f7d | René Nussbaumer | else: |
679 | a6c8fd10 | Stephen Shirley | stderr_handler.setLevel(logging.WARNING) |
680 | 1f7d3f7d | René Nussbaumer | |
681 | 1f7d3f7d | René Nussbaumer | root_logger = logging.getLogger("") |
682 | 1f7d3f7d | René Nussbaumer | root_logger.setLevel(logging.NOTSET) |
683 | 1f7d3f7d | René Nussbaumer | root_logger.addHandler(stderr_handler) |
684 | 1f7d3f7d | René Nussbaumer | |
685 | 1f7d3f7d | René Nussbaumer | |
686 | 1f7d3f7d | René Nussbaumer | def main(): |
687 | 1f7d3f7d | René Nussbaumer | """Main routine. |
688 | 1f7d3f7d | René Nussbaumer | |
689 | 1f7d3f7d | René Nussbaumer | """ |
690 | 1f7d3f7d | René Nussbaumer | program = os.path.basename(sys.argv[0]) |
691 | 1f7d3f7d | René Nussbaumer | |
692 | 1a615be0 | Stephen Shirley | parser = optparse.OptionParser(usage=("%%prog [--debug|--verbose]" |
693 | 1f7d3f7d | René Nussbaumer | " [--watcher-pause-period SECONDS]" |
694 | 1a615be0 | Stephen Shirley | " [--groups [%s|%s]]" |
695 | 1a615be0 | Stephen Shirley | " <cluster> [<cluster...>]" % |
696 | 1a615be0 | Stephen Shirley | (_GROUPS_MERGE, _GROUPS_RENAME)), |
697 | 1f7d3f7d | René Nussbaumer | prog=program) |
698 | 1f7d3f7d | René Nussbaumer | parser.add_option(cli.DEBUG_OPT) |
699 | 1f7d3f7d | René Nussbaumer | parser.add_option(cli.VERBOSE_OPT) |
700 | 1f7d3f7d | René Nussbaumer | parser.add_option(PAUSE_PERIOD_OPT) |
701 | 1a615be0 | Stephen Shirley | parser.add_option(GROUPS_OPT) |
702 | 1f7d3f7d | René Nussbaumer | |
703 | 1f7d3f7d | René Nussbaumer | (options, args) = parser.parse_args() |
704 | 1f7d3f7d | René Nussbaumer | |
705 | 1f7d3f7d | René Nussbaumer | SetupLogging(options) |
706 | 1f7d3f7d | René Nussbaumer | |
707 | 1f7d3f7d | René Nussbaumer | if not args: |
708 | 1f7d3f7d | René Nussbaumer | parser.error("No clusters specified") |
709 | 1f7d3f7d | René Nussbaumer | |
710 | 1a615be0 | Stephen Shirley | cluster_merger = Merger(utils.UniqueSequence(args), options.pause_period, |
711 | 1a615be0 | Stephen Shirley | options.groups) |
712 | 1f7d3f7d | René Nussbaumer | try: |
713 | 1f7d3f7d | René Nussbaumer | try: |
714 | 1f7d3f7d | René Nussbaumer | cluster_merger.Setup() |
715 | 1f7d3f7d | René Nussbaumer | cluster_merger.Merge() |
716 | 1f7d3f7d | René Nussbaumer | except errors.GenericError, e: |
717 | 1f7d3f7d | René Nussbaumer | logging.exception(e) |
718 | 1f7d3f7d | René Nussbaumer | return constants.EXIT_FAILURE |
719 | 1f7d3f7d | René Nussbaumer | finally: |
720 | 1f7d3f7d | René Nussbaumer | cluster_merger.Cleanup() |
721 | 1f7d3f7d | René Nussbaumer | |
722 | 1f7d3f7d | René Nussbaumer | return constants.EXIT_SUCCESS |
723 | 1f7d3f7d | René Nussbaumer | |
724 | 1f7d3f7d | René Nussbaumer | |
725 | 1f7d3f7d | René Nussbaumer | if __name__ == "__main__": |
726 | 1f7d3f7d | René Nussbaumer | sys.exit(main()) |