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Commit | Line | Data |
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c0bbd038 DM |
1 | package PVE::HA::Manager; |
2 | ||
3 | use strict; | |
4 | use warnings; | |
c4a221bc | 5 | use Digest::MD5 qw(md5_base64); |
c0bbd038 | 6 | |
c142ebc9 | 7 | use PVE::Tools; |
a89ff919 | 8 | use PVE::HA::Tools ':exit_codes'; |
c0bbd038 DM |
9 | use PVE::HA::NodeStatus; |
10 | ||
11 | sub new { | |
8f0bb968 | 12 | my ($this, $haenv) = @_; |
c0bbd038 DM |
13 | |
14 | my $class = ref($this) || $this; | |
15 | ||
6ee64cfc | 16 | my $self = bless { haenv => $haenv }, $class; |
8f0bb968 | 17 | |
6ee64cfc | 18 | my $old_ms = $haenv->read_manager_status(); |
8f0bb968 | 19 | |
6ee64cfc TL |
20 | # we only copy the state part of the manager which cannot be auto generated |
21 | ||
22 | $self->{ns} = PVE::HA::NodeStatus->new($haenv, $old_ms->{node_status} || {}); | |
8f0bb968 | 23 | |
59fd7207 | 24 | # fixme: use separate class PVE::HA::ServiceStatus |
6ee64cfc TL |
25 | $self->{ss} = $old_ms->{service_status} || {}; |
26 | ||
27 | $self->{ms} = { master_node => $haenv->nodename() }; | |
c0bbd038 DM |
28 | |
29 | return $self; | |
30 | } | |
31 | ||
d84da043 DM |
32 | sub cleanup { |
33 | my ($self) = @_; | |
34 | ||
35 | # todo: ? | |
36 | } | |
37 | ||
8f0bb968 | 38 | sub flush_master_status { |
c0bbd038 DM |
39 | my ($self) = @_; |
40 | ||
59fd7207 | 41 | my ($haenv, $ms, $ns, $ss) = ($self->{haenv}, $self->{ms}, $self->{ns}, $self->{ss}); |
c0bbd038 | 42 | |
8f0bb968 | 43 | $ms->{node_status} = $ns->{status}; |
59fd7207 | 44 | $ms->{service_status} = $ss; |
d2f612cf | 45 | $ms->{timestamp} = $haenv->get_time(); |
289e4784 | 46 | |
8f0bb968 | 47 | $haenv->write_manager_status($ms); |
289e4784 | 48 | } |
c0bbd038 | 49 | |
48a6ba2a TL |
50 | sub get_service_group { |
51 | my ($groups, $online_node_usage, $service_conf) = @_; | |
f7ccd1b3 | 52 | |
09c5c4bf TL |
53 | my $group = {}; |
54 | # add all online nodes to default group to allow try_next when no group set | |
55 | foreach my $node (keys %$online_node_usage) { | |
56 | $group->{nodes}->{$node} = 1; | |
57 | } | |
abc920b4 | 58 | |
09c5c4bf | 59 | # overwrite default if service is bound to a specific group |
289e4784 | 60 | $group = $groups->{ids}->{$service_conf->{group}} if $service_conf->{group} && |
270d4406 | 61 | $groups->{ids}->{$service_conf->{group}}; |
abc920b4 | 62 | |
48a6ba2a TL |
63 | return $group; |
64 | } | |
65 | ||
66 | # groups available nodes with their priority as group index | |
67 | sub get_node_priority_groups { | |
68 | my ($group, $online_node_usage) = @_; | |
69 | ||
abc920b4 DM |
70 | my $pri_groups = {}; |
71 | my $group_members = {}; | |
e0a56314 | 72 | foreach my $entry (keys %{$group->{nodes}}) { |
abc920b4 DM |
73 | my ($node, $pri) = ($entry, 0); |
74 | if ($entry =~ m/^(\S+):(\d+)$/) { | |
75 | ($node, $pri) = ($1, $2); | |
76 | } | |
270d4406 | 77 | next if !defined($online_node_usage->{$node}); # offline |
abc920b4 DM |
78 | $pri_groups->{$pri}->{$node} = 1; |
79 | $group_members->{$node} = $pri; | |
80 | } | |
f7ccd1b3 | 81 | |
abc920b4 DM |
82 | # add non-group members to unrestricted groups (priority -1) |
83 | if (!$group->{restricted}) { | |
84 | my $pri = -1; | |
270d4406 | 85 | foreach my $node (keys %$online_node_usage) { |
abc920b4 DM |
86 | next if defined($group_members->{$node}); |
87 | $pri_groups->{$pri}->{$node} = 1; | |
88 | $group_members->{$node} = -1; | |
89 | } | |
90 | } | |
91 | ||
48a6ba2a TL |
92 | return ($pri_groups, $group_members); |
93 | } | |
94 | ||
95 | sub select_service_node { | |
96 | my ($groups, $online_node_usage, $service_conf, $current_node, $try_next, $tried_nodes) = @_; | |
97 | ||
98 | my $group = get_service_group($groups, $online_node_usage, $service_conf); | |
99 | ||
100 | my ($pri_groups, $group_members) = get_node_priority_groups($group, $online_node_usage); | |
101 | ||
abc920b4 DM |
102 | my @pri_list = sort {$b <=> $a} keys %$pri_groups; |
103 | return undef if !scalar(@pri_list); | |
09c5c4bf TL |
104 | |
105 | # stay on current node if possible (avoids random migrations) | |
abc920b4 DM |
106 | if (!$try_next && $group->{nofailback} && defined($group_members->{$current_node})) { |
107 | return $current_node; | |
108 | } | |
109 | ||
110 | # select node from top priority node list | |
111 | ||
112 | my $top_pri = $pri_list[0]; | |
113 | ||
e6eeb7dc TL |
114 | # try to avoid nodes where the service failed already if we want to relocate |
115 | if ($try_next) { | |
116 | foreach my $node (@$tried_nodes) { | |
117 | delete $pri_groups->{$top_pri}->{$node}; | |
118 | } | |
119 | } | |
120 | ||
289e4784 | 121 | my @nodes = sort { |
c142ebc9 DM |
122 | $online_node_usage->{$a} <=> $online_node_usage->{$b} || $a cmp $b |
123 | } keys %{$pri_groups->{$top_pri}}; | |
abc920b4 DM |
124 | |
125 | my $found; | |
126 | for (my $i = scalar(@nodes) - 1; $i >= 0; $i--) { | |
127 | my $node = $nodes[$i]; | |
128 | if ($node eq $current_node) { | |
129 | $found = $i; | |
130 | last; | |
131 | } | |
132 | } | |
133 | ||
abc920b4 | 134 | if ($try_next) { |
abc920b4 DM |
135 | if (defined($found) && ($found < (scalar(@nodes) - 1))) { |
136 | return $nodes[$found + 1]; | |
137 | } else { | |
138 | return $nodes[0]; | |
139 | } | |
3ac4cc87 TL |
140 | } elsif (defined($found)) { |
141 | return $nodes[$found]; | |
abc920b4 | 142 | } else { |
abc920b4 | 143 | return $nodes[0]; |
abc920b4 | 144 | } |
f7ccd1b3 DM |
145 | } |
146 | ||
c4a221bc DM |
147 | my $uid_counter = 0; |
148 | ||
d55aa611 DM |
149 | sub compute_new_uuid { |
150 | my ($state) = @_; | |
289e4784 | 151 | |
d55aa611 DM |
152 | $uid_counter++; |
153 | return md5_base64($state . $$ . time() . $uid_counter); | |
154 | } | |
155 | ||
618fbeda DM |
156 | my $valid_service_states = { |
157 | stopped => 1, | |
158 | request_stop => 1, | |
159 | started => 1, | |
160 | fence => 1, | |
161 | migrate => 1, | |
b0fdf86a | 162 | relocate => 1, |
9c7d068b | 163 | freeze => 1, |
618fbeda DM |
164 | error => 1, |
165 | }; | |
166 | ||
270d4406 DM |
167 | sub recompute_online_node_usage { |
168 | my ($self) = @_; | |
169 | ||
170 | my $online_node_usage = {}; | |
171 | ||
172 | my $online_nodes = $self->{ns}->list_online_nodes(); | |
173 | ||
174 | foreach my $node (@$online_nodes) { | |
175 | $online_node_usage->{$node} = 0; | |
176 | } | |
177 | ||
178 | foreach my $sid (keys %{$self->{ss}}) { | |
179 | my $sd = $self->{ss}->{$sid}; | |
180 | my $state = $sd->{state}; | |
181 | if (defined($online_node_usage->{$sd->{node}})) { | |
289e4784 | 182 | if (($state eq 'started') || ($state eq 'request_stop') || |
9c7d068b | 183 | ($state eq 'fence') || ($state eq 'freeze') || ($state eq 'error')) { |
270d4406 DM |
184 | $online_node_usage->{$sd->{node}}++; |
185 | } elsif (($state eq 'migrate') || ($state eq 'relocate')) { | |
186 | $online_node_usage->{$sd->{target}}++; | |
187 | } elsif ($state eq 'stopped') { | |
188 | # do nothing | |
189 | } else { | |
190 | die "should not be reached"; | |
191 | } | |
192 | } | |
193 | } | |
194 | ||
195 | $self->{online_node_usage} = $online_node_usage; | |
196 | } | |
197 | ||
4e01bc86 DM |
198 | my $change_service_state = sub { |
199 | my ($self, $sid, $new_state, %params) = @_; | |
200 | ||
201 | my ($haenv, $ss) = ($self->{haenv}, $self->{ss}); | |
202 | ||
203 | my $sd = $ss->{$sid} || die "no such service '$sid"; | |
204 | ||
205 | my $old_state = $sd->{state}; | |
e4ffb299 | 206 | my $old_node = $sd->{node}; |
46139211 | 207 | my $old_failed_nodes = $sd->{failed_nodes}; |
4e01bc86 DM |
208 | |
209 | die "no state change" if $old_state eq $new_state; # just to be sure | |
210 | ||
618fbeda DM |
211 | die "invalid CRM service state '$new_state'\n" if !$valid_service_states->{$new_state}; |
212 | ||
e4ffb299 DM |
213 | foreach my $k (keys %$sd) { delete $sd->{$k}; }; |
214 | ||
215 | $sd->{state} = $new_state; | |
216 | $sd->{node} = $old_node; | |
ea998b07 | 217 | $sd->{failed_nodes} = $old_failed_nodes if defined($old_failed_nodes); |
e4ffb299 DM |
218 | |
219 | my $text_state = ''; | |
ba623362 | 220 | foreach my $k (sort keys %params) { |
4e01bc86 | 221 | my $v = $params{$k}; |
e4ffb299 DM |
222 | $text_state .= ", " if $text_state; |
223 | $text_state .= "$k = $v"; | |
4e01bc86 DM |
224 | $sd->{$k} = $v; |
225 | } | |
270d4406 DM |
226 | |
227 | $self->recompute_online_node_usage(); | |
228 | ||
d55aa611 | 229 | $sd->{uid} = compute_new_uuid($new_state); |
4e01bc86 | 230 | |
24678a59 TL |
231 | $text_state = " ($text_state)" if $text_state; |
232 | $haenv->log('info', "service '$sid': state changed from '${old_state}'" . | |
233 | " to '${new_state}'$text_state"); | |
4e01bc86 DM |
234 | }; |
235 | ||
5dd3ed86 TL |
236 | # clean up a possible bad state from a recovered service to allow its start |
237 | my $fence_recovery_cleanup = sub { | |
238 | my ($self, $sid, $fenced_node) = @_; | |
239 | ||
240 | my $haenv = $self->{haenv}; | |
241 | ||
0087839a | 242 | my (undef, $type, $id) = $haenv->parse_sid($sid); |
5dd3ed86 TL |
243 | my $plugin = PVE::HA::Resources->lookup($type); |
244 | ||
245 | # should not happen | |
246 | die "unknown resource type '$type'" if !$plugin; | |
247 | ||
32ea51dd TL |
248 | # locks may block recovery, cleanup those which are safe to remove after fencing, |
249 | # i.e., after the original node was reset and thus all it's state | |
250 | my $removable_locks = ['backup', 'mounted', 'migrate', 'clone', 'rollback', 'snapshot', 'snapshot-delete', 'suspending', 'suspended']; | |
5dd3ed86 TL |
251 | if (my $removed_lock = $plugin->remove_locks($haenv, $id, $removable_locks, $fenced_node)) { |
252 | $haenv->log('warning', "removed leftover lock '$removed_lock' from recovered " . | |
253 | "service '$sid' to allow its start."); | |
254 | } | |
255 | }; | |
256 | ||
9da84a0d TL |
257 | # after a node was fenced this recovers the service to a new node |
258 | my $recover_fenced_service = sub { | |
259 | my ($self, $sid, $cd) = @_; | |
260 | ||
261 | my ($haenv, $ss) = ($self->{haenv}, $self->{ss}); | |
262 | ||
263 | my $sd = $ss->{$sid}; | |
264 | ||
265 | if ($sd->{state} ne 'fence') { # should not happen | |
266 | $haenv->log('err', "cannot recover service '$sid' from fencing," . | |
267 | " wrong state '$sd->{state}'"); | |
268 | return; | |
269 | } | |
270 | ||
271 | my $fenced_node = $sd->{node}; # for logging purpose | |
272 | ||
273 | $self->recompute_online_node_usage(); # we want the most current node state | |
274 | ||
275 | my $recovery_node = select_service_node($self->{groups}, | |
276 | $self->{online_node_usage}, | |
277 | $cd, $sd->{node}); | |
278 | ||
279 | if ($recovery_node) { | |
280 | $haenv->log('info', "recover service '$sid' from fenced node " . | |
281 | "'$fenced_node' to node '$recovery_node'"); | |
282 | ||
5dd3ed86 TL |
283 | &$fence_recovery_cleanup($self, $sid, $fenced_node); |
284 | ||
9da84a0d TL |
285 | $haenv->steal_service($sid, $sd->{node}, $recovery_node); |
286 | ||
287 | # $sd *is normally read-only*, fencing is the exception | |
288 | $cd->{node} = $sd->{node} = $recovery_node; | |
bb07bd2c | 289 | my $new_state = ($cd->{state} eq 'started') ? 'started' : 'request_stop'; |
af14d5f3 | 290 | &$change_service_state($self, $sid, $new_state, node => $recovery_node); |
9da84a0d | 291 | } else { |
08aa53c2 | 292 | # no possible node found, cannot recover |
9da84a0d TL |
293 | $haenv->log('err', "recovering service '$sid' from fenced node " . |
294 | "'$fenced_node' failed, no recovery node found"); | |
08aa53c2 | 295 | &$change_service_state($self, $sid, 'error'); |
9da84a0d TL |
296 | } |
297 | }; | |
298 | ||
289e4784 | 299 | # read LRM status for all nodes |
c4a221bc | 300 | sub read_lrm_status { |
332170bd | 301 | my ($self) = @_; |
c4a221bc | 302 | |
9c7d068b | 303 | my $nodes = $self->{ns}->list_nodes(); |
c4a221bc DM |
304 | my $haenv = $self->{haenv}; |
305 | ||
9c7d068b DM |
306 | my $results = {}; |
307 | my $modes = {}; | |
332170bd | 308 | foreach my $node (@$nodes) { |
9c7d068b | 309 | my $lrm_status = $haenv->read_lrm_status($node); |
02ffd753 | 310 | $modes->{$node} = $lrm_status->{mode} || 'active'; |
9c7d068b DM |
311 | foreach my $uid (keys %{$lrm_status->{results}}) { |
312 | next if $results->{$uid}; # should not happen | |
313 | $results->{$uid} = $lrm_status->{results}->{$uid}; | |
c4a221bc DM |
314 | } |
315 | } | |
316 | ||
289e4784 | 317 | |
9c7d068b | 318 | return ($results, $modes); |
c4a221bc DM |
319 | } |
320 | ||
aa98a844 DM |
321 | # read new crm commands and save them into crm master status |
322 | sub update_crm_commands { | |
323 | my ($self) = @_; | |
324 | ||
325 | my ($haenv, $ms, $ns, $ss) = ($self->{haenv}, $self->{ms}, $self->{ns}, $self->{ss}); | |
326 | ||
327 | my $cmdlist = $haenv->read_crm_commands(); | |
bf7febe3 | 328 | |
aa98a844 DM |
329 | foreach my $cmd (split(/\n/, $cmdlist)) { |
330 | chomp $cmd; | |
331 | ||
b0fdf86a | 332 | if ($cmd =~ m/^(migrate|relocate)\s+(\S+)\s+(\S+)$/) { |
289e4784 | 333 | my ($task, $sid, $node) = ($1, $2, $3); |
aa98a844 DM |
334 | if (my $sd = $ss->{$sid}) { |
335 | if (!$ns->node_is_online($node)) { | |
336 | $haenv->log('err', "crm command error - node not online: $cmd"); | |
337 | } else { | |
338 | if ($node eq $sd->{node}) { | |
339 | $haenv->log('info', "ignore crm command - service already on target node: $cmd"); | |
289e4784 | 340 | } else { |
aa98a844 | 341 | $haenv->log('info', "got crm command: $cmd"); |
3d42b01b | 342 | $ss->{$sid}->{cmd} = [ $task, $node ]; |
aa98a844 DM |
343 | } |
344 | } | |
345 | } else { | |
346 | $haenv->log('err', "crm command error - no such service: $cmd"); | |
347 | } | |
348 | ||
21caf0db FE |
349 | } elsif ($cmd =~ m/^stop\s+(\S+)\s+(\S+)$/) { |
350 | my ($sid, $timeout) = ($1, $2); | |
351 | if (my $sd = $ss->{$sid}) { | |
352 | $haenv->log('info', "got crm command: $cmd"); | |
353 | $ss->{$sid}->{cmd} = [ 'stop', $timeout ]; | |
354 | } else { | |
355 | $haenv->log('err', "crm command error - no such service: $cmd"); | |
356 | } | |
aa98a844 DM |
357 | } else { |
358 | $haenv->log('err', "unable to parse crm command: $cmd"); | |
359 | } | |
360 | } | |
361 | ||
362 | } | |
363 | ||
8f0bb968 DM |
364 | sub manage { |
365 | my ($self) = @_; | |
c0bbd038 | 366 | |
59fd7207 | 367 | my ($haenv, $ms, $ns, $ss) = ($self->{haenv}, $self->{ms}, $self->{ns}, $self->{ss}); |
c0bbd038 | 368 | |
332170bd | 369 | $ns->update($haenv->get_node_info()); |
c79442f2 DM |
370 | |
371 | if (!$ns->node_is_online($haenv->nodename())) { | |
e5986717 | 372 | $haenv->log('info', "master seems offline"); |
c79442f2 DM |
373 | return; |
374 | } | |
375 | ||
9c7d068b | 376 | my ($lrm_results, $lrm_modes) = $self->read_lrm_status(); |
c4a221bc | 377 | |
f7ccd1b3 DM |
378 | my $sc = $haenv->read_service_config(); |
379 | ||
abc920b4 DM |
380 | $self->{groups} = $haenv->read_group_config(); # update |
381 | ||
f7ccd1b3 DM |
382 | # compute new service status |
383 | ||
384 | # add new service | |
cc32a8f3 | 385 | foreach my $sid (sort keys %$sc) { |
f7ccd1b3 | 386 | next if $ss->{$sid}; # already there |
77499288 | 387 | my $cd = $sc->{$sid}; |
667670b2 TL |
388 | next if $cd->{state} eq 'ignored'; |
389 | ||
77499288 | 390 | $haenv->log('info', "adding new service '$sid' on node '$cd->{node}'"); |
f7ccd1b3 | 391 | # assume we are running to avoid relocate running service at add |
bb07bd2c | 392 | my $state = ($cd->{state} eq 'started') ? 'started' : 'request_stop'; |
77499288 | 393 | $ss->{$sid} = { state => $state, node => $cd->{node}, |
d55aa611 | 394 | uid => compute_new_uuid('started') }; |
f7ccd1b3 DM |
395 | } |
396 | ||
667670b2 | 397 | # remove stale or ignored services from manager state |
4e5764af | 398 | foreach my $sid (keys %$ss) { |
667670b2 TL |
399 | next if $sc->{$sid} && $sc->{$sid}->{state} ne 'ignored'; |
400 | ||
401 | my $reason = defined($sc->{$sid}) ? 'ignored state requested' : 'no config'; | |
402 | $haenv->log('info', "removing stale service '$sid' ($reason)"); | |
403 | ||
46139211 | 404 | # remove all service related state information |
4e5764af DM |
405 | delete $ss->{$sid}; |
406 | } | |
5a28da91 | 407 | |
aa98a844 DM |
408 | $self->update_crm_commands(); |
409 | ||
c79442f2 DM |
410 | for (;;) { |
411 | my $repeat = 0; | |
289e4784 | 412 | |
270d4406 | 413 | $self->recompute_online_node_usage(); |
f7ccd1b3 | 414 | |
a5e4bef4 | 415 | foreach my $sid (sort keys %$ss) { |
c79442f2 DM |
416 | my $sd = $ss->{$sid}; |
417 | my $cd = $sc->{$sid} || { state => 'disabled' }; | |
f7ccd1b3 | 418 | |
9c7d068b | 419 | my $lrm_res = $sd->{uid} ? $lrm_results->{$sd->{uid}} : undef; |
a875fbe8 | 420 | |
c79442f2 DM |
421 | my $last_state = $sd->{state}; |
422 | ||
423 | if ($last_state eq 'stopped') { | |
424 | ||
abc920b4 | 425 | $self->next_state_stopped($sid, $cd, $sd, $lrm_res); |
f7ccd1b3 | 426 | |
c79442f2 | 427 | } elsif ($last_state eq 'started') { |
f7ccd1b3 | 428 | |
abc920b4 | 429 | $self->next_state_started($sid, $cd, $sd, $lrm_res); |
f7ccd1b3 | 430 | |
b0fdf86a | 431 | } elsif ($last_state eq 'migrate' || $last_state eq 'relocate') { |
f7ccd1b3 | 432 | |
8aaa0e36 | 433 | $self->next_state_migrate_relocate($sid, $cd, $sd, $lrm_res); |
f7ccd1b3 | 434 | |
c79442f2 | 435 | } elsif ($last_state eq 'fence') { |
f7ccd1b3 | 436 | |
21e37ed4 | 437 | # do nothing here - wait until fenced |
f7ccd1b3 | 438 | |
c79442f2 | 439 | } elsif ($last_state eq 'request_stop') { |
f7ccd1b3 | 440 | |
0df5b3dd | 441 | $self->next_state_request_stop($sid, $cd, $sd, $lrm_res); |
618fbeda | 442 | |
9c7d068b DM |
443 | } elsif ($last_state eq 'freeze') { |
444 | ||
445 | my $lrm_mode = $sd->{node} ? $lrm_modes->{$sd->{node}} : undef; | |
9c7d068b | 446 | # unfreeze |
bb07bd2c | 447 | my $state = ($cd->{state} eq 'started') ? 'started' : 'request_stop'; |
af14d5f3 | 448 | &$change_service_state($self, $sid, $state) |
02ffd753 | 449 | if $lrm_mode && $lrm_mode eq 'active'; |
9c7d068b | 450 | |
e88469ba DM |
451 | } elsif ($last_state eq 'error') { |
452 | ||
a2881965 | 453 | $self->next_state_error($sid, $cd, $sd, $lrm_res); |
e88469ba | 454 | |
a875fbe8 DM |
455 | } else { |
456 | ||
457 | die "unknown service state '$last_state'"; | |
618fbeda | 458 | } |
21e37ed4 | 459 | |
9c7d068b | 460 | my $lrm_mode = $sd->{node} ? $lrm_modes->{$sd->{node}} : undef; |
07adc6a6 DM |
461 | if ($lrm_mode && $lrm_mode eq 'restart') { |
462 | if (($sd->{state} eq 'started' || $sd->{state} eq 'stopped' || | |
463 | $sd->{state} eq 'request_stop')) { | |
464 | &$change_service_state($self, $sid, 'freeze'); | |
465 | } | |
9c7d068b | 466 | } |
07adc6a6 | 467 | |
c79442f2 | 468 | $repeat = 1 if $sd->{state} ne $last_state; |
f7ccd1b3 DM |
469 | } |
470 | ||
21e37ed4 DM |
471 | # handle fencing |
472 | my $fenced_nodes = {}; | |
9b2dbc2a | 473 | foreach my $sid (sort keys %$ss) { |
21e37ed4 DM |
474 | my $sd = $ss->{$sid}; |
475 | next if $sd->{state} ne 'fence'; | |
476 | ||
477 | if (!defined($fenced_nodes->{$sd->{node}})) { | |
478 | $fenced_nodes->{$sd->{node}} = $ns->fence_node($sd->{node}) || 0; | |
479 | } | |
480 | ||
481 | next if !$fenced_nodes->{$sd->{node}}; | |
482 | ||
9da84a0d TL |
483 | # node fence was successful - recover service |
484 | &$recover_fenced_service($self, $sid, $sc->{$sid}); | |
21e37ed4 DM |
485 | } |
486 | ||
c79442f2 | 487 | last if !$repeat; |
f7ccd1b3 | 488 | } |
f7ccd1b3 | 489 | |
8f0bb968 | 490 | $self->flush_master_status(); |
c0bbd038 DM |
491 | } |
492 | ||
a875fbe8 DM |
493 | # functions to compute next service states |
494 | # $cd: service configuration data (read only) | |
495 | # $sd: service status data (read only) | |
496 | # | |
497 | # Note: use change_service_state() to alter state | |
498 | # | |
499 | ||
0df5b3dd DM |
500 | sub next_state_request_stop { |
501 | my ($self, $sid, $cd, $sd, $lrm_res) = @_; | |
502 | ||
503 | my $haenv = $self->{haenv}; | |
504 | my $ns = $self->{ns}; | |
505 | ||
506 | # check result from LRM daemon | |
507 | if ($lrm_res) { | |
508 | my $exit_code = $lrm_res->{exit_code}; | |
a89ff919 | 509 | if ($exit_code == SUCCESS) { |
0df5b3dd DM |
510 | &$change_service_state($self, $sid, 'stopped'); |
511 | return; | |
512 | } else { | |
33f01524 | 513 | $haenv->log('err', "service '$sid' stop failed (exit code $exit_code)"); |
0df5b3dd DM |
514 | &$change_service_state($self, $sid, 'error'); # fixme: what state? |
515 | return; | |
516 | } | |
517 | } | |
518 | ||
ce3d7003 | 519 | if ($ns->node_is_offline_delayed($sd->{node})) { |
0df5b3dd DM |
520 | &$change_service_state($self, $sid, 'fence'); |
521 | return; | |
522 | } | |
523 | } | |
524 | ||
8aaa0e36 DM |
525 | sub next_state_migrate_relocate { |
526 | my ($self, $sid, $cd, $sd, $lrm_res) = @_; | |
527 | ||
528 | my $haenv = $self->{haenv}; | |
529 | my $ns = $self->{ns}; | |
530 | ||
531 | # check result from LRM daemon | |
532 | if ($lrm_res) { | |
533 | my $exit_code = $lrm_res->{exit_code}; | |
bb07bd2c | 534 | my $req_state = $cd->{state} eq 'started' ? 'started' : 'request_stop'; |
a89ff919 | 535 | if ($exit_code == SUCCESS) { |
542a9902 | 536 | &$change_service_state($self, $sid, $req_state, node => $sd->{target}); |
8aaa0e36 | 537 | return; |
660596ce TL |
538 | } elsif ($exit_code == EWRONG_NODE) { |
539 | $haenv->log('err', "service '$sid' - migration failed: service" . | |
540 | " registered on wrong node!"); | |
541 | &$change_service_state($self, $sid, 'error'); | |
8aaa0e36 DM |
542 | } else { |
543 | $haenv->log('err', "service '$sid' - migration failed (exit code $exit_code)"); | |
542a9902 | 544 | &$change_service_state($self, $sid, $req_state, node => $sd->{node}); |
8aaa0e36 DM |
545 | return; |
546 | } | |
547 | } | |
548 | ||
ce3d7003 | 549 | if ($ns->node_is_offline_delayed($sd->{node})) { |
8aaa0e36 DM |
550 | &$change_service_state($self, $sid, 'fence'); |
551 | return; | |
552 | } | |
553 | } | |
554 | ||
a875fbe8 | 555 | sub next_state_stopped { |
abc920b4 | 556 | my ($self, $sid, $cd, $sd, $lrm_res) = @_; |
a875fbe8 DM |
557 | |
558 | my $haenv = $self->{haenv}; | |
e88469ba | 559 | my $ns = $self->{ns}; |
a875fbe8 | 560 | |
ff6f1c5c DM |
561 | if ($sd->{node} ne $cd->{node}) { |
562 | # this can happen if we fence a node with active migrations | |
563 | # hack: modify $sd (normally this should be considered read-only) | |
24678a59 | 564 | $haenv->log('info', "fixup service '$sid' location ($sd->{node} => $cd->{node})"); |
289e4784 | 565 | $sd->{node} = $cd->{node}; |
ff6f1c5c DM |
566 | } |
567 | ||
94b7ebe2 | 568 | if ($sd->{cmd}) { |
21caf0db | 569 | my $cmd = shift @{$sd->{cmd}}; |
94b7ebe2 | 570 | |
b0fdf86a | 571 | if ($cmd eq 'migrate' || $cmd eq 'relocate') { |
21caf0db | 572 | my $target = shift @{$sd->{cmd}}; |
94b7ebe2 | 573 | if (!$ns->node_is_online($target)) { |
b0fdf86a | 574 | $haenv->log('err', "ignore service '$sid' $cmd request - node '$target' not online"); |
e88469ba | 575 | } elsif ($sd->{node} eq $target) { |
b0fdf86a | 576 | $haenv->log('info', "ignore service '$sid' $cmd request - service already on node '$target'"); |
94b7ebe2 | 577 | } else { |
9dad9c88 TL |
578 | &$change_service_state($self, $sid, $cmd, node => $sd->{node}, |
579 | target => $target); | |
9da84a0d | 580 | return; |
94b7ebe2 | 581 | } |
21caf0db FE |
582 | } elsif ($cmd eq 'stop') { |
583 | $haenv->log('info', "ignore service '$sid' $cmd request - service already stopped"); | |
94b7ebe2 | 584 | } else { |
289e4784 | 585 | $haenv->log('err', "unknown command '$cmd' for service '$sid'"); |
94b7ebe2 | 586 | } |
21caf0db | 587 | delete $sd->{cmd}; |
35cbb764 | 588 | } |
94b7ebe2 | 589 | |
a875fbe8 | 590 | if ($cd->{state} eq 'disabled') { |
35cbb764 TL |
591 | # NOTE: do nothing here, the stop state is an exception as we do not |
592 | # process the LRM result here, thus the LRM always tries to stop the | |
593 | # service (protection for the case no CRM is active) | |
e88469ba | 594 | return; |
35cbb764 | 595 | } |
e88469ba | 596 | |
af14d5f3 TL |
597 | if ($ns->node_is_offline_delayed($sd->{node})) { |
598 | &$change_service_state($self, $sid, 'fence'); | |
599 | return; | |
600 | } | |
601 | ||
602 | if ($cd->{state} eq 'stopped') { | |
603 | # almost the same as 'disabled' state but the service will also get recovered | |
604 | return; | |
605 | } | |
606 | ||
bb07bd2c | 607 | if ($cd->{state} eq 'started') { |
9da84a0d TL |
608 | # simply mark it started, if it's on the wrong node |
609 | # next_state_started will fix that for us | |
610 | &$change_service_state($self, $sid, 'started', node => $sd->{node}); | |
e88469ba | 611 | return; |
a875fbe8 | 612 | } |
e88469ba DM |
613 | |
614 | $haenv->log('err', "service '$sid' - unknown state '$cd->{state}' in service configuration"); | |
a875fbe8 DM |
615 | } |
616 | ||
46139211 | 617 | sub record_service_failed_on_node { |
57fe8e87 | 618 | my ($self, $sid, $node) = @_; |
46139211 | 619 | |
57fe8e87 DM |
620 | if (!defined($self->{ss}->{$sid}->{failed_nodes})) { |
621 | $self->{ss}->{$sid}->{failed_nodes} = []; | |
622 | } | |
46139211 | 623 | |
57fe8e87 | 624 | push @{$self->{ss}->{$sid}->{failed_nodes}}, $node; |
46139211 TL |
625 | } |
626 | ||
a875fbe8 | 627 | sub next_state_started { |
abc920b4 | 628 | my ($self, $sid, $cd, $sd, $lrm_res) = @_; |
a875fbe8 DM |
629 | |
630 | my $haenv = $self->{haenv}; | |
ea4443cc | 631 | my $master_status = $self->{ms}; |
a875fbe8 DM |
632 | my $ns = $self->{ns}; |
633 | ||
634 | if (!$ns->node_is_online($sd->{node})) { | |
b0e9158d | 635 | if ($ns->node_is_offline_delayed($sd->{node})) { |
5385a606 DM |
636 | &$change_service_state($self, $sid, 'fence'); |
637 | } | |
e88469ba DM |
638 | return; |
639 | } | |
289e4784 | 640 | |
af14d5f3 | 641 | if ($cd->{state} eq 'disabled' || $cd->{state} eq 'stopped') { |
e88469ba DM |
642 | &$change_service_state($self, $sid, 'request_stop'); |
643 | return; | |
644 | } | |
645 | ||
bb07bd2c | 646 | if ($cd->{state} eq 'started') { |
e88469ba DM |
647 | |
648 | if ($sd->{cmd}) { | |
21caf0db | 649 | my $cmd = shift @{$sd->{cmd}}; |
e88469ba | 650 | |
b0fdf86a | 651 | if ($cmd eq 'migrate' || $cmd eq 'relocate') { |
21caf0db | 652 | my $target = shift @{$sd->{cmd}}; |
e88469ba | 653 | if (!$ns->node_is_online($target)) { |
b0fdf86a | 654 | $haenv->log('err', "ignore service '$sid' $cmd request - node '$target' not online"); |
e88469ba | 655 | } elsif ($sd->{node} eq $target) { |
b0fdf86a | 656 | $haenv->log('info', "ignore service '$sid' $cmd request - service already on node '$target'"); |
e88469ba | 657 | } else { |
a3cb8dcb | 658 | $haenv->log('info', "$cmd service '$sid' to node '$target'"); |
b0fdf86a | 659 | &$change_service_state($self, $sid, $cmd, node => $sd->{node}, target => $target); |
e88469ba | 660 | } |
21caf0db FE |
661 | } elsif ($cmd eq 'stop') { |
662 | my $timeout = shift @{$sd->{cmd}}; | |
396eb6f0 TL |
663 | if ($timeout == 0) { |
664 | $haenv->log('info', "request immediate service hard-stop for service '$sid'"); | |
665 | } else { | |
666 | $haenv->log('info', "request graceful stop with timeout '$timeout' for service '$sid'"); | |
667 | } | |
21caf0db FE |
668 | &$change_service_state($self, $sid, 'request_stop', timeout => $timeout); |
669 | $haenv->update_service_config($sid, {'state' => 'stopped'}); | |
a875fbe8 | 670 | } else { |
289e4784 | 671 | $haenv->log('err', "unknown command '$cmd' for service '$sid'"); |
a875fbe8 | 672 | } |
21caf0db FE |
673 | |
674 | delete $sd->{cmd}; | |
675 | ||
a875fbe8 | 676 | } else { |
b0fdf86a | 677 | |
abc920b4 | 678 | my $try_next = 0; |
46139211 | 679 | |
ea4443cc | 680 | if ($lrm_res) { |
46139211 | 681 | |
e9e1cd68 TL |
682 | my $ec = $lrm_res->{exit_code}; |
683 | if ($ec == SUCCESS) { | |
684 | ||
46139211 | 685 | if (defined($sd->{failed_nodes})) { |
81449997 | 686 | $haenv->log('info', "relocation policy successful for '$sid' on node '$sd->{node}'," . |
46139211 TL |
687 | " failed nodes: " . join(', ', @{$sd->{failed_nodes}}) ); |
688 | } | |
689 | ||
690 | delete $sd->{failed_nodes}; | |
e9e1cd68 | 691 | |
b47920fd DM |
692 | # store flag to indicate successful start - only valid while state == 'started' |
693 | $sd->{running} = 1; | |
694 | ||
e9e1cd68 | 695 | } elsif ($ec == ERROR) { |
b47920fd DM |
696 | |
697 | delete $sd->{running}; | |
698 | ||
e9e1cd68 | 699 | # apply our relocate policy if we got ERROR from the LRM |
46139211 | 700 | $self->record_service_failed_on_node($sid, $sd->{node}); |
ea4443cc | 701 | |
46139211 | 702 | if (scalar(@{$sd->{failed_nodes}}) <= $cd->{max_relocate}) { |
ea4443cc | 703 | |
e9e1cd68 TL |
704 | # tell select_service_node to relocate if possible |
705 | $try_next = 1; | |
ea4443cc TL |
706 | |
707 | $haenv->log('warning', "starting service $sid on node". | |
708 | " '$sd->{node}' failed, relocating service."); | |
ea4443cc TL |
709 | |
710 | } else { | |
711 | ||
46139211 TL |
712 | $haenv->log('err', "recovery policy for service $sid " . |
713 | "failed, entering error state. Failed nodes: ". | |
714 | join(', ', @{$sd->{failed_nodes}})); | |
ea4443cc TL |
715 | &$change_service_state($self, $sid, 'error'); |
716 | return; | |
717 | ||
718 | } | |
e9e1cd68 | 719 | } else { |
46139211 TL |
720 | $self->record_service_failed_on_node($sid, $sd->{node}); |
721 | ||
e9e1cd68 TL |
722 | $haenv->log('err', "service '$sid' got unrecoverable error" . |
723 | " (exit code $ec))"); | |
724 | # we have no save way out (yet) for other errors | |
725 | &$change_service_state($self, $sid, 'error'); | |
35cbb764 | 726 | return; |
ea4443cc | 727 | } |
abc920b4 DM |
728 | } |
729 | ||
e6eeb7dc TL |
730 | my $node = select_service_node($self->{groups}, $self->{online_node_usage}, |
731 | $cd, $sd->{node}, $try_next, $sd->{failed_nodes}); | |
abc920b4 | 732 | |
b0fdf86a | 733 | if ($node && ($sd->{node} ne $node)) { |
c0255b2c TL |
734 | if ($cd->{type} eq 'vm') { |
735 | $haenv->log('info', "migrate service '$sid' to node '$node' (running)"); | |
736 | &$change_service_state($self, $sid, 'migrate', node => $sd->{node}, target => $node); | |
737 | } else { | |
738 | $haenv->log('info', "relocate service '$sid' to node '$node'"); | |
739 | &$change_service_state($self, $sid, 'relocate', node => $sd->{node}, target => $node); | |
740 | } | |
b0fdf86a | 741 | } else { |
e6eeb7dc TL |
742 | if ($try_next && !defined($node)) { |
743 | $haenv->log('warning', "Start Error Recovery: Tried all available " . | |
744 | " nodes for service '$sid', retry start on current node. " . | |
745 | "Tried nodes: " . join(', ', @{$sd->{failed_nodes}})); | |
746 | } | |
35cbb764 | 747 | # ensure service get started again if it went unexpected down |
bf2d8d74 TL |
748 | # but ensure also no LRM result gets lost |
749 | $sd->{uid} = compute_new_uuid($sd->{state}) if defined($lrm_res); | |
b0fdf86a | 750 | } |
a875fbe8 | 751 | } |
e88469ba DM |
752 | |
753 | return; | |
35cbb764 | 754 | } |
e88469ba DM |
755 | |
756 | $haenv->log('err', "service '$sid' - unknown state '$cd->{state}' in service configuration"); | |
a875fbe8 | 757 | } |
c0bbd038 | 758 | |
a2881965 TL |
759 | sub next_state_error { |
760 | my ($self, $sid, $cd, $sd, $lrm_res) = @_; | |
761 | ||
762 | my $ns = $self->{ns}; | |
46139211 | 763 | my $ms = $self->{ms}; |
a2881965 TL |
764 | |
765 | if ($cd->{state} eq 'disabled') { | |
46139211 TL |
766 | # clean up on error recovery |
767 | delete $sd->{failed_nodes}; | |
768 | ||
a2881965 TL |
769 | &$change_service_state($self, $sid, 'stopped'); |
770 | return; | |
771 | } | |
772 | ||
a2881965 TL |
773 | } |
774 | ||
c0bbd038 | 775 | 1; |