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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 |
3458a0e3 TL |
60 | if (my $group_id = $service_conf->{group}) { |
61 | $group = $groups->{ids}->{$group_id} if $groups->{ids}->{$group_id}; | |
62 | } | |
abc920b4 | 63 | |
48a6ba2a TL |
64 | return $group; |
65 | } | |
66 | ||
67 | # groups available nodes with their priority as group index | |
68 | sub get_node_priority_groups { | |
69 | my ($group, $online_node_usage) = @_; | |
70 | ||
abc920b4 DM |
71 | my $pri_groups = {}; |
72 | my $group_members = {}; | |
e0a56314 | 73 | foreach my $entry (keys %{$group->{nodes}}) { |
abc920b4 DM |
74 | my ($node, $pri) = ($entry, 0); |
75 | if ($entry =~ m/^(\S+):(\d+)$/) { | |
76 | ($node, $pri) = ($1, $2); | |
77 | } | |
270d4406 | 78 | next if !defined($online_node_usage->{$node}); # offline |
abc920b4 DM |
79 | $pri_groups->{$pri}->{$node} = 1; |
80 | $group_members->{$node} = $pri; | |
81 | } | |
f7ccd1b3 | 82 | |
abc920b4 DM |
83 | # add non-group members to unrestricted groups (priority -1) |
84 | if (!$group->{restricted}) { | |
85 | my $pri = -1; | |
270d4406 | 86 | foreach my $node (keys %$online_node_usage) { |
abc920b4 DM |
87 | next if defined($group_members->{$node}); |
88 | $pri_groups->{$pri}->{$node} = 1; | |
89 | $group_members->{$node} = -1; | |
90 | } | |
91 | } | |
92 | ||
48a6ba2a TL |
93 | return ($pri_groups, $group_members); |
94 | } | |
95 | ||
96 | sub select_service_node { | |
2167dd1e | 97 | my ($groups, $online_node_usage, $service_conf, $current_node, $try_next, $tried_nodes, $maintenance_fallback) = @_; |
48a6ba2a TL |
98 | |
99 | my $group = get_service_group($groups, $online_node_usage, $service_conf); | |
100 | ||
101 | my ($pri_groups, $group_members) = get_node_priority_groups($group, $online_node_usage); | |
102 | ||
abc920b4 DM |
103 | my @pri_list = sort {$b <=> $a} keys %$pri_groups; |
104 | return undef if !scalar(@pri_list); | |
09c5c4bf TL |
105 | |
106 | # stay on current node if possible (avoids random migrations) | |
abc920b4 DM |
107 | if (!$try_next && $group->{nofailback} && defined($group_members->{$current_node})) { |
108 | return $current_node; | |
109 | } | |
110 | ||
111 | # select node from top priority node list | |
112 | ||
113 | my $top_pri = $pri_list[0]; | |
114 | ||
e6eeb7dc TL |
115 | # try to avoid nodes where the service failed already if we want to relocate |
116 | if ($try_next) { | |
117 | foreach my $node (@$tried_nodes) { | |
118 | delete $pri_groups->{$top_pri}->{$node}; | |
119 | } | |
120 | } | |
121 | ||
289e4784 | 122 | my @nodes = sort { |
c142ebc9 DM |
123 | $online_node_usage->{$a} <=> $online_node_usage->{$b} || $a cmp $b |
124 | } keys %{$pri_groups->{$top_pri}}; | |
abc920b4 DM |
125 | |
126 | my $found; | |
2167dd1e | 127 | my $found_maintenace_fallback; |
abc920b4 DM |
128 | for (my $i = scalar(@nodes) - 1; $i >= 0; $i--) { |
129 | my $node = $nodes[$i]; | |
130 | if ($node eq $current_node) { | |
131 | $found = $i; | |
abc920b4 | 132 | } |
2167dd1e TL |
133 | if (defined($maintenance_fallback) && $node eq $maintenance_fallback) { |
134 | $found_maintenace_fallback = $i; | |
135 | } | |
136 | } | |
137 | ||
138 | if (defined($found_maintenace_fallback)) { | |
139 | return $nodes[$found_maintenace_fallback]; | |
abc920b4 DM |
140 | } |
141 | ||
abc920b4 | 142 | if ($try_next) { |
abc920b4 DM |
143 | if (defined($found) && ($found < (scalar(@nodes) - 1))) { |
144 | return $nodes[$found + 1]; | |
145 | } else { | |
146 | return $nodes[0]; | |
147 | } | |
3ac4cc87 TL |
148 | } elsif (defined($found)) { |
149 | return $nodes[$found]; | |
abc920b4 | 150 | } else { |
abc920b4 | 151 | return $nodes[0]; |
abc920b4 | 152 | } |
f7ccd1b3 DM |
153 | } |
154 | ||
c4a221bc DM |
155 | my $uid_counter = 0; |
156 | ||
d55aa611 DM |
157 | sub compute_new_uuid { |
158 | my ($state) = @_; | |
289e4784 | 159 | |
d55aa611 DM |
160 | $uid_counter++; |
161 | return md5_base64($state . $$ . time() . $uid_counter); | |
162 | } | |
163 | ||
618fbeda DM |
164 | my $valid_service_states = { |
165 | stopped => 1, | |
166 | request_stop => 1, | |
167 | started => 1, | |
168 | fence => 1, | |
169 | migrate => 1, | |
b0fdf86a | 170 | relocate => 1, |
9c7d068b | 171 | freeze => 1, |
618fbeda DM |
172 | error => 1, |
173 | }; | |
174 | ||
270d4406 DM |
175 | sub recompute_online_node_usage { |
176 | my ($self) = @_; | |
177 | ||
178 | my $online_node_usage = {}; | |
179 | ||
180 | my $online_nodes = $self->{ns}->list_online_nodes(); | |
181 | ||
182 | foreach my $node (@$online_nodes) { | |
183 | $online_node_usage->{$node} = 0; | |
184 | } | |
185 | ||
186 | foreach my $sid (keys %{$self->{ss}}) { | |
187 | my $sd = $self->{ss}->{$sid}; | |
188 | my $state = $sd->{state}; | |
189 | if (defined($online_node_usage->{$sd->{node}})) { | |
289e4784 | 190 | if (($state eq 'started') || ($state eq 'request_stop') || |
9c7d068b | 191 | ($state eq 'fence') || ($state eq 'freeze') || ($state eq 'error')) { |
270d4406 DM |
192 | $online_node_usage->{$sd->{node}}++; |
193 | } elsif (($state eq 'migrate') || ($state eq 'relocate')) { | |
5c2eef4b TL |
194 | # count it for both, source and target as load is put on both |
195 | $online_node_usage->{$sd->{node}}++; | |
270d4406 DM |
196 | $online_node_usage->{$sd->{target}}++; |
197 | } elsif ($state eq 'stopped') { | |
198 | # do nothing | |
199 | } else { | |
200 | die "should not be reached"; | |
201 | } | |
202 | } | |
203 | } | |
204 | ||
205 | $self->{online_node_usage} = $online_node_usage; | |
206 | } | |
207 | ||
4e01bc86 DM |
208 | my $change_service_state = sub { |
209 | my ($self, $sid, $new_state, %params) = @_; | |
210 | ||
211 | my ($haenv, $ss) = ($self->{haenv}, $self->{ss}); | |
212 | ||
213 | my $sd = $ss->{$sid} || die "no such service '$sid"; | |
214 | ||
215 | my $old_state = $sd->{state}; | |
e4ffb299 | 216 | my $old_node = $sd->{node}; |
46139211 | 217 | my $old_failed_nodes = $sd->{failed_nodes}; |
2167dd1e | 218 | my $old_maintenance_node = $sd->{maintenance_node}; |
4e01bc86 DM |
219 | |
220 | die "no state change" if $old_state eq $new_state; # just to be sure | |
221 | ||
618fbeda DM |
222 | die "invalid CRM service state '$new_state'\n" if !$valid_service_states->{$new_state}; |
223 | ||
e4ffb299 DM |
224 | foreach my $k (keys %$sd) { delete $sd->{$k}; }; |
225 | ||
226 | $sd->{state} = $new_state; | |
227 | $sd->{node} = $old_node; | |
ea998b07 | 228 | $sd->{failed_nodes} = $old_failed_nodes if defined($old_failed_nodes); |
2167dd1e | 229 | $sd->{maintenance_node} = $old_maintenance_node if defined($old_maintenance_node); |
e4ffb299 DM |
230 | |
231 | my $text_state = ''; | |
ba623362 | 232 | foreach my $k (sort keys %params) { |
4e01bc86 | 233 | my $v = $params{$k}; |
e4ffb299 DM |
234 | $text_state .= ", " if $text_state; |
235 | $text_state .= "$k = $v"; | |
4e01bc86 DM |
236 | $sd->{$k} = $v; |
237 | } | |
270d4406 DM |
238 | |
239 | $self->recompute_online_node_usage(); | |
240 | ||
d55aa611 | 241 | $sd->{uid} = compute_new_uuid($new_state); |
4e01bc86 | 242 | |
24678a59 TL |
243 | $text_state = " ($text_state)" if $text_state; |
244 | $haenv->log('info', "service '$sid': state changed from '${old_state}'" . | |
245 | " to '${new_state}'$text_state"); | |
4e01bc86 DM |
246 | }; |
247 | ||
5dd3ed86 TL |
248 | # clean up a possible bad state from a recovered service to allow its start |
249 | my $fence_recovery_cleanup = sub { | |
250 | my ($self, $sid, $fenced_node) = @_; | |
251 | ||
252 | my $haenv = $self->{haenv}; | |
253 | ||
0087839a | 254 | my (undef, $type, $id) = $haenv->parse_sid($sid); |
5dd3ed86 TL |
255 | my $plugin = PVE::HA::Resources->lookup($type); |
256 | ||
257 | # should not happen | |
258 | die "unknown resource type '$type'" if !$plugin; | |
259 | ||
32ea51dd TL |
260 | # locks may block recovery, cleanup those which are safe to remove after fencing, |
261 | # i.e., after the original node was reset and thus all it's state | |
3458a0e3 TL |
262 | my $removable_locks = [ |
263 | 'backup', | |
264 | 'mounted', | |
265 | 'migrate', | |
266 | 'clone', | |
267 | 'rollback', | |
268 | 'snapshot', | |
269 | 'snapshot-delete', | |
270 | 'suspending', | |
271 | 'suspended', | |
272 | ]; | |
5dd3ed86 TL |
273 | if (my $removed_lock = $plugin->remove_locks($haenv, $id, $removable_locks, $fenced_node)) { |
274 | $haenv->log('warning', "removed leftover lock '$removed_lock' from recovered " . | |
275 | "service '$sid' to allow its start."); | |
276 | } | |
277 | }; | |
278 | ||
9da84a0d TL |
279 | # after a node was fenced this recovers the service to a new node |
280 | my $recover_fenced_service = sub { | |
281 | my ($self, $sid, $cd) = @_; | |
282 | ||
283 | my ($haenv, $ss) = ($self->{haenv}, $self->{ss}); | |
284 | ||
285 | my $sd = $ss->{$sid}; | |
286 | ||
287 | if ($sd->{state} ne 'fence') { # should not happen | |
3458a0e3 | 288 | $haenv->log('err', "cannot recover service '$sid' from fencing, wrong state '$sd->{state}'"); |
9da84a0d TL |
289 | return; |
290 | } | |
291 | ||
292 | my $fenced_node = $sd->{node}; # for logging purpose | |
293 | ||
294 | $self->recompute_online_node_usage(); # we want the most current node state | |
295 | ||
3458a0e3 TL |
296 | my $recovery_node = select_service_node( |
297 | $self->{groups}, | |
298 | $self->{online_node_usage}, | |
299 | $cd, | |
300 | $sd->{node}, | |
301 | ); | |
9da84a0d TL |
302 | |
303 | if ($recovery_node) { | |
3458a0e3 | 304 | $haenv->log('info', "recover service '$sid' from fenced node '$fenced_node' to node '$recovery_node'"); |
9da84a0d | 305 | |
5dd3ed86 TL |
306 | &$fence_recovery_cleanup($self, $sid, $fenced_node); |
307 | ||
9da84a0d | 308 | $haenv->steal_service($sid, $sd->{node}, $recovery_node); |
5c2eef4b | 309 | $self->{online_node_usage}->{$recovery_node}++; |
9da84a0d TL |
310 | |
311 | # $sd *is normally read-only*, fencing is the exception | |
312 | $cd->{node} = $sd->{node} = $recovery_node; | |
bb07bd2c | 313 | my $new_state = ($cd->{state} eq 'started') ? 'started' : 'request_stop'; |
af14d5f3 | 314 | &$change_service_state($self, $sid, $new_state, node => $recovery_node); |
9da84a0d | 315 | } else { |
08aa53c2 | 316 | # no possible node found, cannot recover |
3458a0e3 | 317 | $haenv->log('err', "recovering service '$sid' from fenced node '$fenced_node' failed, no recovery node found"); |
08aa53c2 | 318 | &$change_service_state($self, $sid, 'error'); |
9da84a0d TL |
319 | } |
320 | }; | |
321 | ||
289e4784 | 322 | # read LRM status for all nodes |
c4a221bc | 323 | sub read_lrm_status { |
332170bd | 324 | my ($self) = @_; |
c4a221bc | 325 | |
9c7d068b | 326 | my $nodes = $self->{ns}->list_nodes(); |
c4a221bc DM |
327 | my $haenv = $self->{haenv}; |
328 | ||
9c7d068b DM |
329 | my $results = {}; |
330 | my $modes = {}; | |
332170bd | 331 | foreach my $node (@$nodes) { |
9c7d068b | 332 | my $lrm_status = $haenv->read_lrm_status($node); |
02ffd753 | 333 | $modes->{$node} = $lrm_status->{mode} || 'active'; |
9c7d068b DM |
334 | foreach my $uid (keys %{$lrm_status->{results}}) { |
335 | next if $results->{$uid}; # should not happen | |
336 | $results->{$uid} = $lrm_status->{results}->{$uid}; | |
c4a221bc DM |
337 | } |
338 | } | |
339 | ||
289e4784 | 340 | |
9c7d068b | 341 | return ($results, $modes); |
c4a221bc DM |
342 | } |
343 | ||
aa98a844 DM |
344 | # read new crm commands and save them into crm master status |
345 | sub update_crm_commands { | |
346 | my ($self) = @_; | |
347 | ||
348 | my ($haenv, $ms, $ns, $ss) = ($self->{haenv}, $self->{ms}, $self->{ns}, $self->{ss}); | |
349 | ||
350 | my $cmdlist = $haenv->read_crm_commands(); | |
bf7febe3 | 351 | |
aa98a844 DM |
352 | foreach my $cmd (split(/\n/, $cmdlist)) { |
353 | chomp $cmd; | |
354 | ||
b0fdf86a | 355 | if ($cmd =~ m/^(migrate|relocate)\s+(\S+)\s+(\S+)$/) { |
289e4784 | 356 | my ($task, $sid, $node) = ($1, $2, $3); |
aa98a844 DM |
357 | if (my $sd = $ss->{$sid}) { |
358 | if (!$ns->node_is_online($node)) { | |
359 | $haenv->log('err', "crm command error - node not online: $cmd"); | |
360 | } else { | |
361 | if ($node eq $sd->{node}) { | |
362 | $haenv->log('info', "ignore crm command - service already on target node: $cmd"); | |
289e4784 | 363 | } else { |
aa98a844 | 364 | $haenv->log('info', "got crm command: $cmd"); |
3d42b01b | 365 | $ss->{$sid}->{cmd} = [ $task, $node ]; |
aa98a844 DM |
366 | } |
367 | } | |
368 | } else { | |
369 | $haenv->log('err', "crm command error - no such service: $cmd"); | |
370 | } | |
371 | ||
21caf0db FE |
372 | } elsif ($cmd =~ m/^stop\s+(\S+)\s+(\S+)$/) { |
373 | my ($sid, $timeout) = ($1, $2); | |
374 | if (my $sd = $ss->{$sid}) { | |
375 | $haenv->log('info', "got crm command: $cmd"); | |
376 | $ss->{$sid}->{cmd} = [ 'stop', $timeout ]; | |
377 | } else { | |
378 | $haenv->log('err', "crm command error - no such service: $cmd"); | |
379 | } | |
aa98a844 DM |
380 | } else { |
381 | $haenv->log('err', "unable to parse crm command: $cmd"); | |
382 | } | |
383 | } | |
384 | ||
385 | } | |
386 | ||
8f0bb968 DM |
387 | sub manage { |
388 | my ($self) = @_; | |
c0bbd038 | 389 | |
59fd7207 | 390 | my ($haenv, $ms, $ns, $ss) = ($self->{haenv}, $self->{ms}, $self->{ns}, $self->{ss}); |
c0bbd038 | 391 | |
99278e06 TL |
392 | my ($node_info) = $haenv->get_node_info(); |
393 | my ($lrm_results, $lrm_modes) = $self->read_lrm_status(); | |
394 | ||
395 | $ns->update($node_info, $lrm_modes); | |
c79442f2 | 396 | |
99278e06 | 397 | if (!$ns->node_is_operational($haenv->nodename())) { |
e5986717 | 398 | $haenv->log('info', "master seems offline"); |
c79442f2 DM |
399 | return; |
400 | } | |
401 | ||
f7ccd1b3 DM |
402 | my $sc = $haenv->read_service_config(); |
403 | ||
abc920b4 DM |
404 | $self->{groups} = $haenv->read_group_config(); # update |
405 | ||
f7ccd1b3 DM |
406 | # compute new service status |
407 | ||
408 | # add new service | |
cc32a8f3 | 409 | foreach my $sid (sort keys %$sc) { |
f7ccd1b3 | 410 | next if $ss->{$sid}; # already there |
77499288 | 411 | my $cd = $sc->{$sid}; |
667670b2 TL |
412 | next if $cd->{state} eq 'ignored'; |
413 | ||
77499288 | 414 | $haenv->log('info', "adding new service '$sid' on node '$cd->{node}'"); |
f7ccd1b3 | 415 | # assume we are running to avoid relocate running service at add |
bb07bd2c | 416 | my $state = ($cd->{state} eq 'started') ? 'started' : 'request_stop'; |
77499288 | 417 | $ss->{$sid} = { state => $state, node => $cd->{node}, |
d55aa611 | 418 | uid => compute_new_uuid('started') }; |
f7ccd1b3 DM |
419 | } |
420 | ||
667670b2 | 421 | # remove stale or ignored services from manager state |
4e5764af | 422 | foreach my $sid (keys %$ss) { |
667670b2 TL |
423 | next if $sc->{$sid} && $sc->{$sid}->{state} ne 'ignored'; |
424 | ||
425 | my $reason = defined($sc->{$sid}) ? 'ignored state requested' : 'no config'; | |
426 | $haenv->log('info', "removing stale service '$sid' ($reason)"); | |
427 | ||
46139211 | 428 | # remove all service related state information |
4e5764af DM |
429 | delete $ss->{$sid}; |
430 | } | |
5a28da91 | 431 | |
aa98a844 DM |
432 | $self->update_crm_commands(); |
433 | ||
c79442f2 DM |
434 | for (;;) { |
435 | my $repeat = 0; | |
289e4784 | 436 | |
270d4406 | 437 | $self->recompute_online_node_usage(); |
f7ccd1b3 | 438 | |
a5e4bef4 | 439 | foreach my $sid (sort keys %$ss) { |
c79442f2 DM |
440 | my $sd = $ss->{$sid}; |
441 | my $cd = $sc->{$sid} || { state => 'disabled' }; | |
f7ccd1b3 | 442 | |
9c7d068b | 443 | my $lrm_res = $sd->{uid} ? $lrm_results->{$sd->{uid}} : undef; |
a875fbe8 | 444 | |
c79442f2 DM |
445 | my $last_state = $sd->{state}; |
446 | ||
447 | if ($last_state eq 'stopped') { | |
448 | ||
abc920b4 | 449 | $self->next_state_stopped($sid, $cd, $sd, $lrm_res); |
f7ccd1b3 | 450 | |
c79442f2 | 451 | } elsif ($last_state eq 'started') { |
f7ccd1b3 | 452 | |
abc920b4 | 453 | $self->next_state_started($sid, $cd, $sd, $lrm_res); |
f7ccd1b3 | 454 | |
b0fdf86a | 455 | } elsif ($last_state eq 'migrate' || $last_state eq 'relocate') { |
f7ccd1b3 | 456 | |
8aaa0e36 | 457 | $self->next_state_migrate_relocate($sid, $cd, $sd, $lrm_res); |
f7ccd1b3 | 458 | |
c79442f2 | 459 | } elsif ($last_state eq 'fence') { |
f7ccd1b3 | 460 | |
21e37ed4 | 461 | # do nothing here - wait until fenced |
f7ccd1b3 | 462 | |
c79442f2 | 463 | } elsif ($last_state eq 'request_stop') { |
f7ccd1b3 | 464 | |
0df5b3dd | 465 | $self->next_state_request_stop($sid, $cd, $sd, $lrm_res); |
618fbeda | 466 | |
9c7d068b DM |
467 | } elsif ($last_state eq 'freeze') { |
468 | ||
469 | my $lrm_mode = $sd->{node} ? $lrm_modes->{$sd->{node}} : undef; | |
9c7d068b | 470 | # unfreeze |
bb07bd2c | 471 | my $state = ($cd->{state} eq 'started') ? 'started' : 'request_stop'; |
af14d5f3 | 472 | &$change_service_state($self, $sid, $state) |
02ffd753 | 473 | if $lrm_mode && $lrm_mode eq 'active'; |
9c7d068b | 474 | |
e88469ba DM |
475 | } elsif ($last_state eq 'error') { |
476 | ||
a2881965 | 477 | $self->next_state_error($sid, $cd, $sd, $lrm_res); |
e88469ba | 478 | |
a875fbe8 DM |
479 | } else { |
480 | ||
481 | die "unknown service state '$last_state'"; | |
618fbeda | 482 | } |
21e37ed4 | 483 | |
9c7d068b | 484 | my $lrm_mode = $sd->{node} ? $lrm_modes->{$sd->{node}} : undef; |
07adc6a6 DM |
485 | if ($lrm_mode && $lrm_mode eq 'restart') { |
486 | if (($sd->{state} eq 'started' || $sd->{state} eq 'stopped' || | |
487 | $sd->{state} eq 'request_stop')) { | |
488 | &$change_service_state($self, $sid, 'freeze'); | |
489 | } | |
9c7d068b | 490 | } |
07adc6a6 | 491 | |
c79442f2 | 492 | $repeat = 1 if $sd->{state} ne $last_state; |
f7ccd1b3 DM |
493 | } |
494 | ||
21e37ed4 DM |
495 | # handle fencing |
496 | my $fenced_nodes = {}; | |
9b2dbc2a | 497 | foreach my $sid (sort keys %$ss) { |
21e37ed4 DM |
498 | my $sd = $ss->{$sid}; |
499 | next if $sd->{state} ne 'fence'; | |
500 | ||
501 | if (!defined($fenced_nodes->{$sd->{node}})) { | |
502 | $fenced_nodes->{$sd->{node}} = $ns->fence_node($sd->{node}) || 0; | |
503 | } | |
504 | ||
505 | next if !$fenced_nodes->{$sd->{node}}; | |
506 | ||
9da84a0d TL |
507 | # node fence was successful - recover service |
508 | &$recover_fenced_service($self, $sid, $sc->{$sid}); | |
21e37ed4 DM |
509 | } |
510 | ||
c79442f2 | 511 | last if !$repeat; |
f7ccd1b3 | 512 | } |
f7ccd1b3 | 513 | |
8f0bb968 | 514 | $self->flush_master_status(); |
c0bbd038 DM |
515 | } |
516 | ||
a875fbe8 DM |
517 | # functions to compute next service states |
518 | # $cd: service configuration data (read only) | |
519 | # $sd: service status data (read only) | |
520 | # | |
521 | # Note: use change_service_state() to alter state | |
522 | # | |
523 | ||
0df5b3dd DM |
524 | sub next_state_request_stop { |
525 | my ($self, $sid, $cd, $sd, $lrm_res) = @_; | |
526 | ||
527 | my $haenv = $self->{haenv}; | |
528 | my $ns = $self->{ns}; | |
529 | ||
530 | # check result from LRM daemon | |
531 | if ($lrm_res) { | |
532 | my $exit_code = $lrm_res->{exit_code}; | |
a89ff919 | 533 | if ($exit_code == SUCCESS) { |
0df5b3dd DM |
534 | &$change_service_state($self, $sid, 'stopped'); |
535 | return; | |
536 | } else { | |
33f01524 | 537 | $haenv->log('err', "service '$sid' stop failed (exit code $exit_code)"); |
0df5b3dd DM |
538 | &$change_service_state($self, $sid, 'error'); # fixme: what state? |
539 | return; | |
540 | } | |
541 | } | |
542 | ||
ce3d7003 | 543 | if ($ns->node_is_offline_delayed($sd->{node})) { |
0df5b3dd DM |
544 | &$change_service_state($self, $sid, 'fence'); |
545 | return; | |
546 | } | |
547 | } | |
548 | ||
8aaa0e36 DM |
549 | sub next_state_migrate_relocate { |
550 | my ($self, $sid, $cd, $sd, $lrm_res) = @_; | |
551 | ||
552 | my $haenv = $self->{haenv}; | |
553 | my $ns = $self->{ns}; | |
554 | ||
555 | # check result from LRM daemon | |
556 | if ($lrm_res) { | |
557 | my $exit_code = $lrm_res->{exit_code}; | |
bb07bd2c | 558 | my $req_state = $cd->{state} eq 'started' ? 'started' : 'request_stop'; |
a89ff919 | 559 | if ($exit_code == SUCCESS) { |
542a9902 | 560 | &$change_service_state($self, $sid, $req_state, node => $sd->{target}); |
8aaa0e36 | 561 | return; |
660596ce TL |
562 | } elsif ($exit_code == EWRONG_NODE) { |
563 | $haenv->log('err', "service '$sid' - migration failed: service" . | |
564 | " registered on wrong node!"); | |
565 | &$change_service_state($self, $sid, 'error'); | |
8aaa0e36 DM |
566 | } else { |
567 | $haenv->log('err', "service '$sid' - migration failed (exit code $exit_code)"); | |
542a9902 | 568 | &$change_service_state($self, $sid, $req_state, node => $sd->{node}); |
8aaa0e36 DM |
569 | return; |
570 | } | |
571 | } | |
572 | ||
ce3d7003 | 573 | if ($ns->node_is_offline_delayed($sd->{node})) { |
8aaa0e36 DM |
574 | &$change_service_state($self, $sid, 'fence'); |
575 | return; | |
576 | } | |
577 | } | |
578 | ||
a875fbe8 | 579 | sub next_state_stopped { |
abc920b4 | 580 | my ($self, $sid, $cd, $sd, $lrm_res) = @_; |
a875fbe8 DM |
581 | |
582 | my $haenv = $self->{haenv}; | |
e88469ba | 583 | my $ns = $self->{ns}; |
a875fbe8 | 584 | |
ff6f1c5c DM |
585 | if ($sd->{node} ne $cd->{node}) { |
586 | # this can happen if we fence a node with active migrations | |
587 | # hack: modify $sd (normally this should be considered read-only) | |
24678a59 | 588 | $haenv->log('info', "fixup service '$sid' location ($sd->{node} => $cd->{node})"); |
289e4784 | 589 | $sd->{node} = $cd->{node}; |
ff6f1c5c DM |
590 | } |
591 | ||
94b7ebe2 | 592 | if ($sd->{cmd}) { |
21caf0db | 593 | my $cmd = shift @{$sd->{cmd}}; |
94b7ebe2 | 594 | |
b0fdf86a | 595 | if ($cmd eq 'migrate' || $cmd eq 'relocate') { |
21caf0db | 596 | my $target = shift @{$sd->{cmd}}; |
94b7ebe2 | 597 | if (!$ns->node_is_online($target)) { |
b0fdf86a | 598 | $haenv->log('err', "ignore service '$sid' $cmd request - node '$target' not online"); |
e88469ba | 599 | } elsif ($sd->{node} eq $target) { |
b0fdf86a | 600 | $haenv->log('info', "ignore service '$sid' $cmd request - service already on node '$target'"); |
94b7ebe2 | 601 | } else { |
9dad9c88 TL |
602 | &$change_service_state($self, $sid, $cmd, node => $sd->{node}, |
603 | target => $target); | |
9da84a0d | 604 | return; |
94b7ebe2 | 605 | } |
21caf0db FE |
606 | } elsif ($cmd eq 'stop') { |
607 | $haenv->log('info', "ignore service '$sid' $cmd request - service already stopped"); | |
94b7ebe2 | 608 | } else { |
289e4784 | 609 | $haenv->log('err', "unknown command '$cmd' for service '$sid'"); |
94b7ebe2 | 610 | } |
21caf0db | 611 | delete $sd->{cmd}; |
35cbb764 | 612 | } |
94b7ebe2 | 613 | |
a875fbe8 | 614 | if ($cd->{state} eq 'disabled') { |
35cbb764 TL |
615 | # NOTE: do nothing here, the stop state is an exception as we do not |
616 | # process the LRM result here, thus the LRM always tries to stop the | |
617 | # service (protection for the case no CRM is active) | |
e88469ba | 618 | return; |
35cbb764 | 619 | } |
e88469ba | 620 | |
84c945e4 | 621 | if ($ns->node_is_offline_delayed($sd->{node}) && $ns->get_node_state($sd->{node}) ne 'maintenance') { |
af14d5f3 TL |
622 | &$change_service_state($self, $sid, 'fence'); |
623 | return; | |
624 | } | |
625 | ||
626 | if ($cd->{state} eq 'stopped') { | |
627 | # almost the same as 'disabled' state but the service will also get recovered | |
628 | return; | |
629 | } | |
630 | ||
bb07bd2c | 631 | if ($cd->{state} eq 'started') { |
9da84a0d TL |
632 | # simply mark it started, if it's on the wrong node |
633 | # next_state_started will fix that for us | |
634 | &$change_service_state($self, $sid, 'started', node => $sd->{node}); | |
e88469ba | 635 | return; |
a875fbe8 | 636 | } |
e88469ba DM |
637 | |
638 | $haenv->log('err', "service '$sid' - unknown state '$cd->{state}' in service configuration"); | |
a875fbe8 DM |
639 | } |
640 | ||
46139211 | 641 | sub record_service_failed_on_node { |
57fe8e87 | 642 | my ($self, $sid, $node) = @_; |
46139211 | 643 | |
57fe8e87 DM |
644 | if (!defined($self->{ss}->{$sid}->{failed_nodes})) { |
645 | $self->{ss}->{$sid}->{failed_nodes} = []; | |
646 | } | |
46139211 | 647 | |
57fe8e87 | 648 | push @{$self->{ss}->{$sid}->{failed_nodes}}, $node; |
46139211 TL |
649 | } |
650 | ||
a875fbe8 | 651 | sub next_state_started { |
abc920b4 | 652 | my ($self, $sid, $cd, $sd, $lrm_res) = @_; |
a875fbe8 DM |
653 | |
654 | my $haenv = $self->{haenv}; | |
ea4443cc | 655 | my $master_status = $self->{ms}; |
a875fbe8 DM |
656 | my $ns = $self->{ns}; |
657 | ||
658 | if (!$ns->node_is_online($sd->{node})) { | |
b0e9158d | 659 | if ($ns->node_is_offline_delayed($sd->{node})) { |
5385a606 DM |
660 | &$change_service_state($self, $sid, 'fence'); |
661 | } | |
99278e06 TL |
662 | if ($ns->get_node_state($sd->{node}) ne 'maintenance') { |
663 | return; | |
2167dd1e TL |
664 | } else { |
665 | # save current node as fallback for when it comes out of | |
666 | # maintenance | |
667 | $sd->{maintenance_node} = $sd->{node}; | |
99278e06 | 668 | } |
e88469ba | 669 | } |
289e4784 | 670 | |
af14d5f3 | 671 | if ($cd->{state} eq 'disabled' || $cd->{state} eq 'stopped') { |
e88469ba DM |
672 | &$change_service_state($self, $sid, 'request_stop'); |
673 | return; | |
674 | } | |
675 | ||
bb07bd2c | 676 | if ($cd->{state} eq 'started') { |
e88469ba DM |
677 | |
678 | if ($sd->{cmd}) { | |
21caf0db | 679 | my $cmd = shift @{$sd->{cmd}}; |
e88469ba | 680 | |
b0fdf86a | 681 | if ($cmd eq 'migrate' || $cmd eq 'relocate') { |
21caf0db | 682 | my $target = shift @{$sd->{cmd}}; |
e88469ba | 683 | if (!$ns->node_is_online($target)) { |
b0fdf86a | 684 | $haenv->log('err', "ignore service '$sid' $cmd request - node '$target' not online"); |
e88469ba | 685 | } elsif ($sd->{node} eq $target) { |
b0fdf86a | 686 | $haenv->log('info', "ignore service '$sid' $cmd request - service already on node '$target'"); |
e88469ba | 687 | } else { |
a3cb8dcb | 688 | $haenv->log('info', "$cmd service '$sid' to node '$target'"); |
b0fdf86a | 689 | &$change_service_state($self, $sid, $cmd, node => $sd->{node}, target => $target); |
e88469ba | 690 | } |
21caf0db FE |
691 | } elsif ($cmd eq 'stop') { |
692 | my $timeout = shift @{$sd->{cmd}}; | |
396eb6f0 TL |
693 | if ($timeout == 0) { |
694 | $haenv->log('info', "request immediate service hard-stop for service '$sid'"); | |
695 | } else { | |
696 | $haenv->log('info', "request graceful stop with timeout '$timeout' for service '$sid'"); | |
697 | } | |
21caf0db FE |
698 | &$change_service_state($self, $sid, 'request_stop', timeout => $timeout); |
699 | $haenv->update_service_config($sid, {'state' => 'stopped'}); | |
a875fbe8 | 700 | } else { |
289e4784 | 701 | $haenv->log('err', "unknown command '$cmd' for service '$sid'"); |
a875fbe8 | 702 | } |
21caf0db FE |
703 | |
704 | delete $sd->{cmd}; | |
705 | ||
a875fbe8 | 706 | } else { |
b0fdf86a | 707 | |
abc920b4 | 708 | my $try_next = 0; |
46139211 | 709 | |
ea4443cc | 710 | if ($lrm_res) { |
46139211 | 711 | |
e9e1cd68 TL |
712 | my $ec = $lrm_res->{exit_code}; |
713 | if ($ec == SUCCESS) { | |
714 | ||
46139211 | 715 | if (defined($sd->{failed_nodes})) { |
81449997 | 716 | $haenv->log('info', "relocation policy successful for '$sid' on node '$sd->{node}'," . |
46139211 TL |
717 | " failed nodes: " . join(', ', @{$sd->{failed_nodes}}) ); |
718 | } | |
719 | ||
720 | delete $sd->{failed_nodes}; | |
e9e1cd68 | 721 | |
b47920fd DM |
722 | # store flag to indicate successful start - only valid while state == 'started' |
723 | $sd->{running} = 1; | |
724 | ||
e9e1cd68 | 725 | } elsif ($ec == ERROR) { |
b47920fd DM |
726 | |
727 | delete $sd->{running}; | |
728 | ||
e9e1cd68 | 729 | # apply our relocate policy if we got ERROR from the LRM |
46139211 | 730 | $self->record_service_failed_on_node($sid, $sd->{node}); |
ea4443cc | 731 | |
46139211 | 732 | if (scalar(@{$sd->{failed_nodes}}) <= $cd->{max_relocate}) { |
ea4443cc | 733 | |
e9e1cd68 TL |
734 | # tell select_service_node to relocate if possible |
735 | $try_next = 1; | |
ea4443cc TL |
736 | |
737 | $haenv->log('warning', "starting service $sid on node". | |
738 | " '$sd->{node}' failed, relocating service."); | |
ea4443cc TL |
739 | |
740 | } else { | |
741 | ||
46139211 TL |
742 | $haenv->log('err', "recovery policy for service $sid " . |
743 | "failed, entering error state. Failed nodes: ". | |
744 | join(', ', @{$sd->{failed_nodes}})); | |
ea4443cc TL |
745 | &$change_service_state($self, $sid, 'error'); |
746 | return; | |
747 | ||
748 | } | |
e9e1cd68 | 749 | } else { |
46139211 TL |
750 | $self->record_service_failed_on_node($sid, $sd->{node}); |
751 | ||
e9e1cd68 TL |
752 | $haenv->log('err', "service '$sid' got unrecoverable error" . |
753 | " (exit code $ec))"); | |
754 | # we have no save way out (yet) for other errors | |
755 | &$change_service_state($self, $sid, 'error'); | |
35cbb764 | 756 | return; |
ea4443cc | 757 | } |
abc920b4 DM |
758 | } |
759 | ||
2167dd1e TL |
760 | my $node = select_service_node( |
761 | $self->{groups}, | |
762 | $self->{online_node_usage}, | |
763 | $cd, | |
764 | $sd->{node}, | |
765 | $try_next, | |
766 | $sd->{failed_nodes}, | |
767 | $sd->{maintenance_node}, | |
768 | ); | |
abc920b4 | 769 | |
b0fdf86a | 770 | if ($node && ($sd->{node} ne $node)) { |
5c2eef4b | 771 | $self->{online_node_usage}->{$node}++; |
2167dd1e TL |
772 | |
773 | if (defined(my $fallback = $sd->{maintenance_node})) { | |
774 | if ($node eq $fallback) { | |
775 | $haenv->log('info', "moving service '$sid' back to '$fallback', node came back from maintenance."); | |
776 | delete $sd->{maintenance_node}; | |
777 | } elsif ($sd->{node} ne $fallback) { | |
778 | $haenv->log('info', "dropping maintenance fallback node '$fallback' for '$sid'"); | |
779 | delete $sd->{maintenance_node}; | |
780 | } | |
781 | } | |
782 | ||
c0255b2c TL |
783 | if ($cd->{type} eq 'vm') { |
784 | $haenv->log('info', "migrate service '$sid' to node '$node' (running)"); | |
785 | &$change_service_state($self, $sid, 'migrate', node => $sd->{node}, target => $node); | |
786 | } else { | |
787 | $haenv->log('info', "relocate service '$sid' to node '$node'"); | |
788 | &$change_service_state($self, $sid, 'relocate', node => $sd->{node}, target => $node); | |
789 | } | |
b0fdf86a | 790 | } else { |
e6eeb7dc TL |
791 | if ($try_next && !defined($node)) { |
792 | $haenv->log('warning', "Start Error Recovery: Tried all available " . | |
793 | " nodes for service '$sid', retry start on current node. " . | |
794 | "Tried nodes: " . join(', ', @{$sd->{failed_nodes}})); | |
795 | } | |
35cbb764 | 796 | # ensure service get started again if it went unexpected down |
bf2d8d74 TL |
797 | # but ensure also no LRM result gets lost |
798 | $sd->{uid} = compute_new_uuid($sd->{state}) if defined($lrm_res); | |
b0fdf86a | 799 | } |
a875fbe8 | 800 | } |
e88469ba DM |
801 | |
802 | return; | |
35cbb764 | 803 | } |
e88469ba DM |
804 | |
805 | $haenv->log('err', "service '$sid' - unknown state '$cd->{state}' in service configuration"); | |
a875fbe8 | 806 | } |
c0bbd038 | 807 | |
a2881965 TL |
808 | sub next_state_error { |
809 | my ($self, $sid, $cd, $sd, $lrm_res) = @_; | |
810 | ||
811 | my $ns = $self->{ns}; | |
46139211 | 812 | my $ms = $self->{ms}; |
a2881965 TL |
813 | |
814 | if ($cd->{state} eq 'disabled') { | |
46139211 TL |
815 | # clean up on error recovery |
816 | delete $sd->{failed_nodes}; | |
817 | ||
a2881965 TL |
818 | &$change_service_state($self, $sid, 'stopped'); |
819 | return; | |
820 | } | |
821 | ||
a2881965 TL |
822 | } |
823 | ||
c0bbd038 | 824 | 1; |