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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 | 9 | use PVE::HA::NodeStatus; |
5d724d4d | 10 | use PVE::HA::Usage::Basic; |
c0bbd038 | 11 | |
a3ffb0b3 TL |
12 | ## Variable Name & Abbreviations Convention |
13 | # | |
14 | # The HA stack has some variables it uses frequently and thus abbreviates it such that it may be | |
15 | # confusing for new readers. Here's a short list of the most common used. | |
16 | # | |
17 | # NOTE: variables should be assumed to be read only if not otherwise stated, only use the specific | |
18 | # methods to re-compute/read/alter them. | |
19 | # | |
20 | # - $haenv -> HA environment, the main interface to the simulator/test/real world | |
21 | # - $sid -> Service ID, unique identifier for a service, `type:vmid` is common | |
22 | # | |
23 | # - $ms -> Master/Manager Status, contains runtime info from the current active manager | |
24 | # - $ns -> Node Status, hash holding online/offline status about all nodes | |
25 | # | |
26 | # - $ss -> Service Status, hash holding the current state (last LRM cmd result, failed starts | |
27 | # or migrates, maintenance fallback node, for *all* services ... | |
28 | # - $sd -> Service Data, the service status of a *single* service, iow. $ss->{$sid} | |
29 | # | |
30 | # - $sc -> Service Configuration, hash for all services including target state, group, ... | |
0869c306 | 31 | # - $cd -> Configuration Data, the service config of a *single* service, iow. $sc->{$sid} |
a3ffb0b3 TL |
32 | # |
33 | # Try to avoid adding new two letter (or similar over abbreviated) names, but also don't send | |
34 | # patches for changing above, as that set is mostly sensible and should be easy to remember once | |
35 | # spending a bit time in the HA code base. | |
36 | ||
c0bbd038 | 37 | sub new { |
8f0bb968 | 38 | my ($this, $haenv) = @_; |
c0bbd038 DM |
39 | |
40 | my $class = ref($this) || $this; | |
41 | ||
6ee64cfc | 42 | my $self = bless { haenv => $haenv }, $class; |
8f0bb968 | 43 | |
6ee64cfc | 44 | my $old_ms = $haenv->read_manager_status(); |
8f0bb968 | 45 | |
6ee64cfc TL |
46 | # we only copy the state part of the manager which cannot be auto generated |
47 | ||
48 | $self->{ns} = PVE::HA::NodeStatus->new($haenv, $old_ms->{node_status} || {}); | |
8f0bb968 | 49 | |
59fd7207 | 50 | # fixme: use separate class PVE::HA::ServiceStatus |
6ee64cfc TL |
51 | $self->{ss} = $old_ms->{service_status} || {}; |
52 | ||
53 | $self->{ms} = { master_node => $haenv->nodename() }; | |
c0bbd038 DM |
54 | |
55 | return $self; | |
56 | } | |
57 | ||
d84da043 DM |
58 | sub cleanup { |
59 | my ($self) = @_; | |
60 | ||
61 | # todo: ? | |
62 | } | |
63 | ||
8f0bb968 | 64 | sub flush_master_status { |
c0bbd038 DM |
65 | my ($self) = @_; |
66 | ||
59fd7207 | 67 | my ($haenv, $ms, $ns, $ss) = ($self->{haenv}, $self->{ms}, $self->{ns}, $self->{ss}); |
c0bbd038 | 68 | |
8f0bb968 | 69 | $ms->{node_status} = $ns->{status}; |
59fd7207 | 70 | $ms->{service_status} = $ss; |
d2f612cf | 71 | $ms->{timestamp} = $haenv->get_time(); |
289e4784 | 72 | |
8f0bb968 | 73 | $haenv->write_manager_status($ms); |
289e4784 | 74 | } |
c0bbd038 | 75 | |
48a6ba2a TL |
76 | sub get_service_group { |
77 | my ($groups, $online_node_usage, $service_conf) = @_; | |
f7ccd1b3 | 78 | |
09c5c4bf TL |
79 | my $group = {}; |
80 | # add all online nodes to default group to allow try_next when no group set | |
5d724d4d | 81 | $group->{nodes}->{$_} = 1 for $online_node_usage->list_nodes(); |
abc920b4 | 82 | |
09c5c4bf | 83 | # overwrite default if service is bound to a specific group |
3458a0e3 TL |
84 | if (my $group_id = $service_conf->{group}) { |
85 | $group = $groups->{ids}->{$group_id} if $groups->{ids}->{$group_id}; | |
86 | } | |
abc920b4 | 87 | |
48a6ba2a TL |
88 | return $group; |
89 | } | |
90 | ||
91 | # groups available nodes with their priority as group index | |
92 | sub get_node_priority_groups { | |
93 | my ($group, $online_node_usage) = @_; | |
94 | ||
abc920b4 DM |
95 | my $pri_groups = {}; |
96 | my $group_members = {}; | |
e0a56314 | 97 | foreach my $entry (keys %{$group->{nodes}}) { |
abc920b4 DM |
98 | my ($node, $pri) = ($entry, 0); |
99 | if ($entry =~ m/^(\S+):(\d+)$/) { | |
100 | ($node, $pri) = ($1, $2); | |
101 | } | |
5d724d4d | 102 | next if !$online_node_usage->contains_node($node); # offline |
abc920b4 DM |
103 | $pri_groups->{$pri}->{$node} = 1; |
104 | $group_members->{$node} = $pri; | |
105 | } | |
f7ccd1b3 | 106 | |
abc920b4 DM |
107 | # add non-group members to unrestricted groups (priority -1) |
108 | if (!$group->{restricted}) { | |
109 | my $pri = -1; | |
5d724d4d | 110 | for my $node ($online_node_usage->list_nodes()) { |
abc920b4 DM |
111 | next if defined($group_members->{$node}); |
112 | $pri_groups->{$pri}->{$node} = 1; | |
113 | $group_members->{$node} = -1; | |
114 | } | |
115 | } | |
116 | ||
48a6ba2a TL |
117 | return ($pri_groups, $group_members); |
118 | } | |
119 | ||
120 | sub select_service_node { | |
b2598576 | 121 | my ($groups, $online_node_usage, $sid, $service_conf, $current_node, $try_next, $tried_nodes, $maintenance_fallback) = @_; |
48a6ba2a TL |
122 | |
123 | my $group = get_service_group($groups, $online_node_usage, $service_conf); | |
124 | ||
125 | my ($pri_groups, $group_members) = get_node_priority_groups($group, $online_node_usage); | |
126 | ||
abc920b4 DM |
127 | my @pri_list = sort {$b <=> $a} keys %$pri_groups; |
128 | return undef if !scalar(@pri_list); | |
09c5c4bf TL |
129 | |
130 | # stay on current node if possible (avoids random migrations) | |
abc920b4 DM |
131 | if (!$try_next && $group->{nofailback} && defined($group_members->{$current_node})) { |
132 | return $current_node; | |
133 | } | |
134 | ||
135 | # select node from top priority node list | |
136 | ||
137 | my $top_pri = $pri_list[0]; | |
138 | ||
e6eeb7dc TL |
139 | # try to avoid nodes where the service failed already if we want to relocate |
140 | if ($try_next) { | |
141 | foreach my $node (@$tried_nodes) { | |
142 | delete $pri_groups->{$top_pri}->{$node}; | |
143 | } | |
144 | } | |
145 | ||
5d724d4d | 146 | my $scores = $online_node_usage->score_nodes_to_start_service($sid, $current_node); |
289e4784 | 147 | my @nodes = sort { |
5d724d4d | 148 | $scores->{$a} <=> $scores->{$b} || $a cmp $b |
c142ebc9 | 149 | } keys %{$pri_groups->{$top_pri}}; |
abc920b4 DM |
150 | |
151 | my $found; | |
1280368d | 152 | my $found_maintenance_fallback; |
abc920b4 DM |
153 | for (my $i = scalar(@nodes) - 1; $i >= 0; $i--) { |
154 | my $node = $nodes[$i]; | |
155 | if ($node eq $current_node) { | |
156 | $found = $i; | |
abc920b4 | 157 | } |
2167dd1e | 158 | if (defined($maintenance_fallback) && $node eq $maintenance_fallback) { |
1280368d | 159 | $found_maintenance_fallback = $i; |
2167dd1e TL |
160 | } |
161 | } | |
162 | ||
1280368d TL |
163 | if (defined($found_maintenance_fallback)) { |
164 | return $nodes[$found_maintenance_fallback]; | |
abc920b4 DM |
165 | } |
166 | ||
abc920b4 | 167 | if ($try_next) { |
abc920b4 DM |
168 | if (defined($found) && ($found < (scalar(@nodes) - 1))) { |
169 | return $nodes[$found + 1]; | |
170 | } else { | |
171 | return $nodes[0]; | |
172 | } | |
3ac4cc87 TL |
173 | } elsif (defined($found)) { |
174 | return $nodes[$found]; | |
abc920b4 | 175 | } else { |
abc920b4 | 176 | return $nodes[0]; |
abc920b4 | 177 | } |
f7ccd1b3 DM |
178 | } |
179 | ||
c4a221bc DM |
180 | my $uid_counter = 0; |
181 | ||
d55aa611 DM |
182 | sub compute_new_uuid { |
183 | my ($state) = @_; | |
289e4784 | 184 | |
d55aa611 DM |
185 | $uid_counter++; |
186 | return md5_base64($state . $$ . time() . $uid_counter); | |
187 | } | |
188 | ||
618fbeda DM |
189 | my $valid_service_states = { |
190 | stopped => 1, | |
191 | request_stop => 1, | |
192 | started => 1, | |
193 | fence => 1, | |
c259b1a8 | 194 | recovery => 1, |
618fbeda | 195 | migrate => 1, |
b0fdf86a | 196 | relocate => 1, |
9c7d068b | 197 | freeze => 1, |
618fbeda DM |
198 | error => 1, |
199 | }; | |
200 | ||
270d4406 DM |
201 | sub recompute_online_node_usage { |
202 | my ($self) = @_; | |
203 | ||
5d724d4d | 204 | my $online_node_usage = PVE::HA::Usage::Basic->new($self->{haenv}); |
270d4406 DM |
205 | |
206 | my $online_nodes = $self->{ns}->list_online_nodes(); | |
207 | ||
5d724d4d | 208 | $online_node_usage->add_node($_) for $online_nodes->@*; |
270d4406 DM |
209 | |
210 | foreach my $sid (keys %{$self->{ss}}) { | |
211 | my $sd = $self->{ss}->{$sid}; | |
212 | my $state = $sd->{state}; | |
6f818da1 | 213 | my $target = $sd->{target}; # optional |
5d724d4d | 214 | if ($online_node_usage->contains_node($sd->{node})) { |
c259b1a8 TL |
215 | if ( |
216 | $state eq 'started' || $state eq 'request_stop' || $state eq 'fence' || | |
217 | $state eq 'freeze' || $state eq 'error' || $state eq 'recovery' | |
218 | ) { | |
5d724d4d | 219 | $online_node_usage->add_service_usage_to_node($sd->{node}, $sid, $sd->{node}); |
270d4406 | 220 | } elsif (($state eq 'migrate') || ($state eq 'relocate')) { |
5d724d4d | 221 | my $source = $sd->{node}; |
5c2eef4b | 222 | # count it for both, source and target as load is put on both |
5d724d4d FE |
223 | $online_node_usage->add_service_usage_to_node($source, $sid, $source, $target); |
224 | $online_node_usage->add_service_usage_to_node($target, $sid, $source, $target); | |
270d4406 DM |
225 | } elsif ($state eq 'stopped') { |
226 | # do nothing | |
227 | } else { | |
feea3913 | 228 | die "should not be reached (sid = '$sid', state = '$state')"; |
270d4406 | 229 | } |
5d724d4d | 230 | } elsif (defined($target) && $online_node_usage->contains_node($target)) { |
066fd016 TL |
231 | if ($state eq 'migrate' || $state eq 'relocate') { |
232 | # to correctly track maintenance modi and also consider the target as used for the | |
233 | # case a node dies, as we cannot really know if the to-be-aborted incoming migration | |
234 | # has already cleaned up all used resources | |
5d724d4d | 235 | $online_node_usage->add_service_usage_to_node($target, $sid, $sd->{node}, $target); |
066fd016 | 236 | } |
270d4406 DM |
237 | } |
238 | } | |
239 | ||
240 | $self->{online_node_usage} = $online_node_usage; | |
241 | } | |
242 | ||
4e01bc86 DM |
243 | my $change_service_state = sub { |
244 | my ($self, $sid, $new_state, %params) = @_; | |
245 | ||
246 | my ($haenv, $ss) = ($self->{haenv}, $self->{ss}); | |
247 | ||
248 | my $sd = $ss->{$sid} || die "no such service '$sid"; | |
249 | ||
250 | my $old_state = $sd->{state}; | |
e4ffb299 | 251 | my $old_node = $sd->{node}; |
46139211 | 252 | my $old_failed_nodes = $sd->{failed_nodes}; |
2167dd1e | 253 | my $old_maintenance_node = $sd->{maintenance_node}; |
4e01bc86 DM |
254 | |
255 | die "no state change" if $old_state eq $new_state; # just to be sure | |
256 | ||
618fbeda DM |
257 | die "invalid CRM service state '$new_state'\n" if !$valid_service_states->{$new_state}; |
258 | ||
e4ffb299 DM |
259 | foreach my $k (keys %$sd) { delete $sd->{$k}; }; |
260 | ||
261 | $sd->{state} = $new_state; | |
262 | $sd->{node} = $old_node; | |
ea998b07 | 263 | $sd->{failed_nodes} = $old_failed_nodes if defined($old_failed_nodes); |
2167dd1e | 264 | $sd->{maintenance_node} = $old_maintenance_node if defined($old_maintenance_node); |
e4ffb299 DM |
265 | |
266 | my $text_state = ''; | |
ba623362 | 267 | foreach my $k (sort keys %params) { |
4e01bc86 | 268 | my $v = $params{$k}; |
e4ffb299 DM |
269 | $text_state .= ", " if $text_state; |
270 | $text_state .= "$k = $v"; | |
4e01bc86 DM |
271 | $sd->{$k} = $v; |
272 | } | |
270d4406 DM |
273 | |
274 | $self->recompute_online_node_usage(); | |
275 | ||
d55aa611 | 276 | $sd->{uid} = compute_new_uuid($new_state); |
4e01bc86 | 277 | |
24678a59 TL |
278 | $text_state = " ($text_state)" if $text_state; |
279 | $haenv->log('info', "service '$sid': state changed from '${old_state}'" . | |
280 | " to '${new_state}'$text_state"); | |
4e01bc86 DM |
281 | }; |
282 | ||
5dd3ed86 TL |
283 | # clean up a possible bad state from a recovered service to allow its start |
284 | my $fence_recovery_cleanup = sub { | |
285 | my ($self, $sid, $fenced_node) = @_; | |
286 | ||
287 | my $haenv = $self->{haenv}; | |
288 | ||
0087839a | 289 | my (undef, $type, $id) = $haenv->parse_sid($sid); |
5dd3ed86 TL |
290 | my $plugin = PVE::HA::Resources->lookup($type); |
291 | ||
292 | # should not happen | |
293 | die "unknown resource type '$type'" if !$plugin; | |
294 | ||
32ea51dd TL |
295 | # locks may block recovery, cleanup those which are safe to remove after fencing, |
296 | # i.e., after the original node was reset and thus all it's state | |
3458a0e3 TL |
297 | my $removable_locks = [ |
298 | 'backup', | |
299 | 'mounted', | |
300 | 'migrate', | |
301 | 'clone', | |
302 | 'rollback', | |
303 | 'snapshot', | |
304 | 'snapshot-delete', | |
305 | 'suspending', | |
306 | 'suspended', | |
307 | ]; | |
5dd3ed86 TL |
308 | if (my $removed_lock = $plugin->remove_locks($haenv, $id, $removable_locks, $fenced_node)) { |
309 | $haenv->log('warning', "removed leftover lock '$removed_lock' from recovered " . | |
310 | "service '$sid' to allow its start."); | |
311 | } | |
312 | }; | |
313 | ||
289e4784 | 314 | # read LRM status for all nodes |
c4a221bc | 315 | sub read_lrm_status { |
332170bd | 316 | my ($self) = @_; |
c4a221bc | 317 | |
9c7d068b | 318 | my $nodes = $self->{ns}->list_nodes(); |
c4a221bc DM |
319 | my $haenv = $self->{haenv}; |
320 | ||
9c7d068b DM |
321 | my $results = {}; |
322 | my $modes = {}; | |
332170bd | 323 | foreach my $node (@$nodes) { |
9c7d068b | 324 | my $lrm_status = $haenv->read_lrm_status($node); |
02ffd753 | 325 | $modes->{$node} = $lrm_status->{mode} || 'active'; |
9c7d068b DM |
326 | foreach my $uid (keys %{$lrm_status->{results}}) { |
327 | next if $results->{$uid}; # should not happen | |
328 | $results->{$uid} = $lrm_status->{results}->{$uid}; | |
c4a221bc DM |
329 | } |
330 | } | |
331 | ||
9c7d068b | 332 | return ($results, $modes); |
c4a221bc DM |
333 | } |
334 | ||
aa98a844 DM |
335 | # read new crm commands and save them into crm master status |
336 | sub update_crm_commands { | |
337 | my ($self) = @_; | |
338 | ||
339 | my ($haenv, $ms, $ns, $ss) = ($self->{haenv}, $self->{ms}, $self->{ns}, $self->{ss}); | |
340 | ||
341 | my $cmdlist = $haenv->read_crm_commands(); | |
bf7febe3 | 342 | |
aa98a844 DM |
343 | foreach my $cmd (split(/\n/, $cmdlist)) { |
344 | chomp $cmd; | |
345 | ||
b0fdf86a | 346 | if ($cmd =~ m/^(migrate|relocate)\s+(\S+)\s+(\S+)$/) { |
289e4784 | 347 | my ($task, $sid, $node) = ($1, $2, $3); |
aa98a844 DM |
348 | if (my $sd = $ss->{$sid}) { |
349 | if (!$ns->node_is_online($node)) { | |
350 | $haenv->log('err', "crm command error - node not online: $cmd"); | |
351 | } else { | |
352 | if ($node eq $sd->{node}) { | |
353 | $haenv->log('info', "ignore crm command - service already on target node: $cmd"); | |
289e4784 | 354 | } else { |
aa98a844 | 355 | $haenv->log('info', "got crm command: $cmd"); |
3d42b01b | 356 | $ss->{$sid}->{cmd} = [ $task, $node ]; |
aa98a844 DM |
357 | } |
358 | } | |
359 | } else { | |
360 | $haenv->log('err', "crm command error - no such service: $cmd"); | |
361 | } | |
362 | ||
21caf0db FE |
363 | } elsif ($cmd =~ m/^stop\s+(\S+)\s+(\S+)$/) { |
364 | my ($sid, $timeout) = ($1, $2); | |
365 | if (my $sd = $ss->{$sid}) { | |
366 | $haenv->log('info', "got crm command: $cmd"); | |
367 | $ss->{$sid}->{cmd} = [ 'stop', $timeout ]; | |
368 | } else { | |
369 | $haenv->log('err', "crm command error - no such service: $cmd"); | |
370 | } | |
aa98a844 DM |
371 | } else { |
372 | $haenv->log('err', "unable to parse crm command: $cmd"); | |
373 | } | |
374 | } | |
375 | ||
376 | } | |
377 | ||
8f0bb968 DM |
378 | sub manage { |
379 | my ($self) = @_; | |
c0bbd038 | 380 | |
59fd7207 | 381 | my ($haenv, $ms, $ns, $ss) = ($self->{haenv}, $self->{ms}, $self->{ns}, $self->{ss}); |
c0bbd038 | 382 | |
99278e06 TL |
383 | my ($node_info) = $haenv->get_node_info(); |
384 | my ($lrm_results, $lrm_modes) = $self->read_lrm_status(); | |
385 | ||
386 | $ns->update($node_info, $lrm_modes); | |
c79442f2 | 387 | |
99278e06 | 388 | if (!$ns->node_is_operational($haenv->nodename())) { |
e5986717 | 389 | $haenv->log('info', "master seems offline"); |
c79442f2 DM |
390 | return; |
391 | } | |
392 | ||
f7ccd1b3 DM |
393 | my $sc = $haenv->read_service_config(); |
394 | ||
abc920b4 DM |
395 | $self->{groups} = $haenv->read_group_config(); # update |
396 | ||
f7ccd1b3 DM |
397 | # compute new service status |
398 | ||
399 | # add new service | |
cc32a8f3 | 400 | foreach my $sid (sort keys %$sc) { |
f7ccd1b3 | 401 | next if $ss->{$sid}; # already there |
77499288 | 402 | my $cd = $sc->{$sid}; |
667670b2 TL |
403 | next if $cd->{state} eq 'ignored'; |
404 | ||
77499288 | 405 | $haenv->log('info', "adding new service '$sid' on node '$cd->{node}'"); |
f7ccd1b3 | 406 | # assume we are running to avoid relocate running service at add |
bb07bd2c | 407 | my $state = ($cd->{state} eq 'started') ? 'started' : 'request_stop'; |
77499288 | 408 | $ss->{$sid} = { state => $state, node => $cd->{node}, |
d55aa611 | 409 | uid => compute_new_uuid('started') }; |
f7ccd1b3 DM |
410 | } |
411 | ||
667670b2 | 412 | # remove stale or ignored services from manager state |
4e5764af | 413 | foreach my $sid (keys %$ss) { |
667670b2 TL |
414 | next if $sc->{$sid} && $sc->{$sid}->{state} ne 'ignored'; |
415 | ||
416 | my $reason = defined($sc->{$sid}) ? 'ignored state requested' : 'no config'; | |
417 | $haenv->log('info', "removing stale service '$sid' ($reason)"); | |
418 | ||
46139211 | 419 | # remove all service related state information |
4e5764af DM |
420 | delete $ss->{$sid}; |
421 | } | |
5a28da91 | 422 | |
aa98a844 DM |
423 | $self->update_crm_commands(); |
424 | ||
c79442f2 DM |
425 | for (;;) { |
426 | my $repeat = 0; | |
289e4784 | 427 | |
270d4406 | 428 | $self->recompute_online_node_usage(); |
f7ccd1b3 | 429 | |
a5e4bef4 | 430 | foreach my $sid (sort keys %$ss) { |
c79442f2 DM |
431 | my $sd = $ss->{$sid}; |
432 | my $cd = $sc->{$sid} || { state => 'disabled' }; | |
f7ccd1b3 | 433 | |
9c7d068b | 434 | my $lrm_res = $sd->{uid} ? $lrm_results->{$sd->{uid}} : undef; |
a875fbe8 | 435 | |
c79442f2 DM |
436 | my $last_state = $sd->{state}; |
437 | ||
438 | if ($last_state eq 'stopped') { | |
439 | ||
abc920b4 | 440 | $self->next_state_stopped($sid, $cd, $sd, $lrm_res); |
f7ccd1b3 | 441 | |
c79442f2 | 442 | } elsif ($last_state eq 'started') { |
f7ccd1b3 | 443 | |
abc920b4 | 444 | $self->next_state_started($sid, $cd, $sd, $lrm_res); |
f7ccd1b3 | 445 | |
b0fdf86a | 446 | } elsif ($last_state eq 'migrate' || $last_state eq 'relocate') { |
f7ccd1b3 | 447 | |
8aaa0e36 | 448 | $self->next_state_migrate_relocate($sid, $cd, $sd, $lrm_res); |
f7ccd1b3 | 449 | |
c79442f2 | 450 | } elsif ($last_state eq 'fence') { |
f7ccd1b3 | 451 | |
21e37ed4 | 452 | # do nothing here - wait until fenced |
f7ccd1b3 | 453 | |
c259b1a8 TL |
454 | } elsif ($last_state eq 'recovery') { |
455 | ||
456 | $self->next_state_recovery($sid, $cd, $sd, $lrm_res); | |
457 | ||
c79442f2 | 458 | } elsif ($last_state eq 'request_stop') { |
f7ccd1b3 | 459 | |
0df5b3dd | 460 | $self->next_state_request_stop($sid, $cd, $sd, $lrm_res); |
618fbeda | 461 | |
9c7d068b DM |
462 | } elsif ($last_state eq 'freeze') { |
463 | ||
464 | my $lrm_mode = $sd->{node} ? $lrm_modes->{$sd->{node}} : undef; | |
9c7d068b | 465 | # unfreeze |
bb07bd2c | 466 | my $state = ($cd->{state} eq 'started') ? 'started' : 'request_stop'; |
af14d5f3 | 467 | &$change_service_state($self, $sid, $state) |
02ffd753 | 468 | if $lrm_mode && $lrm_mode eq 'active'; |
9c7d068b | 469 | |
e88469ba DM |
470 | } elsif ($last_state eq 'error') { |
471 | ||
a2881965 | 472 | $self->next_state_error($sid, $cd, $sd, $lrm_res); |
e88469ba | 473 | |
a875fbe8 DM |
474 | } else { |
475 | ||
476 | die "unknown service state '$last_state'"; | |
618fbeda | 477 | } |
21e37ed4 | 478 | |
9c7d068b | 479 | my $lrm_mode = $sd->{node} ? $lrm_modes->{$sd->{node}} : undef; |
07adc6a6 DM |
480 | if ($lrm_mode && $lrm_mode eq 'restart') { |
481 | if (($sd->{state} eq 'started' || $sd->{state} eq 'stopped' || | |
482 | $sd->{state} eq 'request_stop')) { | |
483 | &$change_service_state($self, $sid, 'freeze'); | |
484 | } | |
9c7d068b | 485 | } |
07adc6a6 | 486 | |
c79442f2 | 487 | $repeat = 1 if $sd->{state} ne $last_state; |
f7ccd1b3 DM |
488 | } |
489 | ||
21e37ed4 DM |
490 | # handle fencing |
491 | my $fenced_nodes = {}; | |
9b2dbc2a | 492 | foreach my $sid (sort keys %$ss) { |
2deff1ae TL |
493 | my ($service_state, $service_node) = $ss->{$sid}->@{'state', 'node'}; |
494 | next if $service_state ne 'fence'; | |
0dcb6597 TL |
495 | |
496 | if (!defined($fenced_nodes->{$service_node})) { | |
2deff1ae | 497 | $fenced_nodes->{$service_node} = $ns->fence_node($service_node) || 0; |
21e37ed4 DM |
498 | } |
499 | ||
0dcb6597 | 500 | next if !$fenced_nodes->{$service_node}; |
21e37ed4 | 501 | |
9da84a0d | 502 | # node fence was successful - recover service |
c259b1a8 | 503 | $change_service_state->($self, $sid, 'recovery'); |
0dcb6597 | 504 | $repeat = 1; # for faster recovery execution |
21e37ed4 DM |
505 | } |
506 | ||
2deff1ae TL |
507 | # Avoid that a node without services in 'fence' state (e.g., removed |
508 | # manually by admin) is stuck with the 'fence' node state. | |
509 | for my $node (sort grep { !defined($fenced_nodes->{$_}) } keys $ns->{status}->%*) { | |
7dc92703 | 510 | next if $ns->get_node_state($node) ne 'fence'; |
7dc92703 | 511 | |
2deff1ae TL |
512 | $haenv->log('notice', "node '$node' in fence state but no services to-fence! admin interference?!"); |
513 | $repeat = 1 if $ns->fence_node($node); | |
7dc92703 FE |
514 | } |
515 | ||
c79442f2 | 516 | last if !$repeat; |
f7ccd1b3 | 517 | } |
f7ccd1b3 | 518 | |
8f0bb968 | 519 | $self->flush_master_status(); |
c0bbd038 DM |
520 | } |
521 | ||
a875fbe8 DM |
522 | # functions to compute next service states |
523 | # $cd: service configuration data (read only) | |
524 | # $sd: service status data (read only) | |
525 | # | |
526 | # Note: use change_service_state() to alter state | |
527 | # | |
528 | ||
0df5b3dd DM |
529 | sub next_state_request_stop { |
530 | my ($self, $sid, $cd, $sd, $lrm_res) = @_; | |
531 | ||
532 | my $haenv = $self->{haenv}; | |
533 | my $ns = $self->{ns}; | |
534 | ||
535 | # check result from LRM daemon | |
536 | if ($lrm_res) { | |
537 | my $exit_code = $lrm_res->{exit_code}; | |
a89ff919 | 538 | if ($exit_code == SUCCESS) { |
0df5b3dd DM |
539 | &$change_service_state($self, $sid, 'stopped'); |
540 | return; | |
541 | } else { | |
33f01524 | 542 | $haenv->log('err', "service '$sid' stop failed (exit code $exit_code)"); |
0df5b3dd DM |
543 | &$change_service_state($self, $sid, 'error'); # fixme: what state? |
544 | return; | |
545 | } | |
546 | } | |
547 | ||
ce3d7003 | 548 | if ($ns->node_is_offline_delayed($sd->{node})) { |
0df5b3dd DM |
549 | &$change_service_state($self, $sid, 'fence'); |
550 | return; | |
551 | } | |
552 | } | |
553 | ||
8aaa0e36 DM |
554 | sub next_state_migrate_relocate { |
555 | my ($self, $sid, $cd, $sd, $lrm_res) = @_; | |
556 | ||
557 | my $haenv = $self->{haenv}; | |
558 | my $ns = $self->{ns}; | |
559 | ||
560 | # check result from LRM daemon | |
561 | if ($lrm_res) { | |
562 | my $exit_code = $lrm_res->{exit_code}; | |
bb07bd2c | 563 | my $req_state = $cd->{state} eq 'started' ? 'started' : 'request_stop'; |
a89ff919 | 564 | if ($exit_code == SUCCESS) { |
542a9902 | 565 | &$change_service_state($self, $sid, $req_state, node => $sd->{target}); |
8aaa0e36 | 566 | return; |
660596ce TL |
567 | } elsif ($exit_code == EWRONG_NODE) { |
568 | $haenv->log('err', "service '$sid' - migration failed: service" . | |
569 | " registered on wrong node!"); | |
570 | &$change_service_state($self, $sid, 'error'); | |
8aaa0e36 DM |
571 | } else { |
572 | $haenv->log('err', "service '$sid' - migration failed (exit code $exit_code)"); | |
542a9902 | 573 | &$change_service_state($self, $sid, $req_state, node => $sd->{node}); |
8aaa0e36 DM |
574 | return; |
575 | } | |
576 | } | |
577 | ||
ce3d7003 | 578 | if ($ns->node_is_offline_delayed($sd->{node})) { |
8aaa0e36 DM |
579 | &$change_service_state($self, $sid, 'fence'); |
580 | return; | |
581 | } | |
582 | } | |
583 | ||
a875fbe8 | 584 | sub next_state_stopped { |
abc920b4 | 585 | my ($self, $sid, $cd, $sd, $lrm_res) = @_; |
a875fbe8 DM |
586 | |
587 | my $haenv = $self->{haenv}; | |
e88469ba | 588 | my $ns = $self->{ns}; |
a875fbe8 | 589 | |
ff6f1c5c DM |
590 | if ($sd->{node} ne $cd->{node}) { |
591 | # this can happen if we fence a node with active migrations | |
592 | # hack: modify $sd (normally this should be considered read-only) | |
24678a59 | 593 | $haenv->log('info', "fixup service '$sid' location ($sd->{node} => $cd->{node})"); |
289e4784 | 594 | $sd->{node} = $cd->{node}; |
ff6f1c5c DM |
595 | } |
596 | ||
94b7ebe2 | 597 | if ($sd->{cmd}) { |
21caf0db | 598 | my $cmd = shift @{$sd->{cmd}}; |
94b7ebe2 | 599 | |
b0fdf86a | 600 | if ($cmd eq 'migrate' || $cmd eq 'relocate') { |
21caf0db | 601 | my $target = shift @{$sd->{cmd}}; |
94b7ebe2 | 602 | if (!$ns->node_is_online($target)) { |
b0fdf86a | 603 | $haenv->log('err', "ignore service '$sid' $cmd request - node '$target' not online"); |
e88469ba | 604 | } elsif ($sd->{node} eq $target) { |
b0fdf86a | 605 | $haenv->log('info', "ignore service '$sid' $cmd request - service already on node '$target'"); |
94b7ebe2 | 606 | } else { |
9dad9c88 TL |
607 | &$change_service_state($self, $sid, $cmd, node => $sd->{node}, |
608 | target => $target); | |
9da84a0d | 609 | return; |
94b7ebe2 | 610 | } |
21caf0db FE |
611 | } elsif ($cmd eq 'stop') { |
612 | $haenv->log('info', "ignore service '$sid' $cmd request - service already stopped"); | |
94b7ebe2 | 613 | } else { |
289e4784 | 614 | $haenv->log('err', "unknown command '$cmd' for service '$sid'"); |
94b7ebe2 | 615 | } |
21caf0db | 616 | delete $sd->{cmd}; |
35cbb764 | 617 | } |
94b7ebe2 | 618 | |
a875fbe8 | 619 | if ($cd->{state} eq 'disabled') { |
35cbb764 TL |
620 | # NOTE: do nothing here, the stop state is an exception as we do not |
621 | # process the LRM result here, thus the LRM always tries to stop the | |
622 | # service (protection for the case no CRM is active) | |
e88469ba | 623 | return; |
35cbb764 | 624 | } |
e88469ba | 625 | |
84c945e4 | 626 | if ($ns->node_is_offline_delayed($sd->{node}) && $ns->get_node_state($sd->{node}) ne 'maintenance') { |
af14d5f3 TL |
627 | &$change_service_state($self, $sid, 'fence'); |
628 | return; | |
629 | } | |
630 | ||
631 | if ($cd->{state} eq 'stopped') { | |
632 | # almost the same as 'disabled' state but the service will also get recovered | |
633 | return; | |
634 | } | |
635 | ||
bb07bd2c | 636 | if ($cd->{state} eq 'started') { |
9da84a0d TL |
637 | # simply mark it started, if it's on the wrong node |
638 | # next_state_started will fix that for us | |
639 | &$change_service_state($self, $sid, 'started', node => $sd->{node}); | |
e88469ba | 640 | return; |
a875fbe8 | 641 | } |
e88469ba DM |
642 | |
643 | $haenv->log('err', "service '$sid' - unknown state '$cd->{state}' in service configuration"); | |
a875fbe8 DM |
644 | } |
645 | ||
46139211 | 646 | sub record_service_failed_on_node { |
57fe8e87 | 647 | my ($self, $sid, $node) = @_; |
46139211 | 648 | |
57fe8e87 DM |
649 | if (!defined($self->{ss}->{$sid}->{failed_nodes})) { |
650 | $self->{ss}->{$sid}->{failed_nodes} = []; | |
651 | } | |
46139211 | 652 | |
57fe8e87 | 653 | push @{$self->{ss}->{$sid}->{failed_nodes}}, $node; |
46139211 TL |
654 | } |
655 | ||
a875fbe8 | 656 | sub next_state_started { |
abc920b4 | 657 | my ($self, $sid, $cd, $sd, $lrm_res) = @_; |
a875fbe8 DM |
658 | |
659 | my $haenv = $self->{haenv}; | |
ea4443cc | 660 | my $master_status = $self->{ms}; |
a875fbe8 DM |
661 | my $ns = $self->{ns}; |
662 | ||
663 | if (!$ns->node_is_online($sd->{node})) { | |
b0e9158d | 664 | if ($ns->node_is_offline_delayed($sd->{node})) { |
5385a606 DM |
665 | &$change_service_state($self, $sid, 'fence'); |
666 | } | |
99278e06 TL |
667 | if ($ns->get_node_state($sd->{node}) ne 'maintenance') { |
668 | return; | |
2167dd1e TL |
669 | } else { |
670 | # save current node as fallback for when it comes out of | |
671 | # maintenance | |
672 | $sd->{maintenance_node} = $sd->{node}; | |
99278e06 | 673 | } |
e88469ba | 674 | } |
289e4784 | 675 | |
af14d5f3 | 676 | if ($cd->{state} eq 'disabled' || $cd->{state} eq 'stopped') { |
e88469ba DM |
677 | &$change_service_state($self, $sid, 'request_stop'); |
678 | return; | |
679 | } | |
680 | ||
bb07bd2c | 681 | if ($cd->{state} eq 'started') { |
e88469ba DM |
682 | |
683 | if ($sd->{cmd}) { | |
21caf0db | 684 | my $cmd = shift @{$sd->{cmd}}; |
e88469ba | 685 | |
b0fdf86a | 686 | if ($cmd eq 'migrate' || $cmd eq 'relocate') { |
21caf0db | 687 | my $target = shift @{$sd->{cmd}}; |
e88469ba | 688 | if (!$ns->node_is_online($target)) { |
b0fdf86a | 689 | $haenv->log('err', "ignore service '$sid' $cmd request - node '$target' not online"); |
e88469ba | 690 | } elsif ($sd->{node} eq $target) { |
b0fdf86a | 691 | $haenv->log('info', "ignore service '$sid' $cmd request - service already on node '$target'"); |
e88469ba | 692 | } else { |
a3cb8dcb | 693 | $haenv->log('info', "$cmd service '$sid' to node '$target'"); |
b0fdf86a | 694 | &$change_service_state($self, $sid, $cmd, node => $sd->{node}, target => $target); |
e88469ba | 695 | } |
21caf0db FE |
696 | } elsif ($cmd eq 'stop') { |
697 | my $timeout = shift @{$sd->{cmd}}; | |
396eb6f0 TL |
698 | if ($timeout == 0) { |
699 | $haenv->log('info', "request immediate service hard-stop for service '$sid'"); | |
700 | } else { | |
701 | $haenv->log('info', "request graceful stop with timeout '$timeout' for service '$sid'"); | |
702 | } | |
21caf0db FE |
703 | &$change_service_state($self, $sid, 'request_stop', timeout => $timeout); |
704 | $haenv->update_service_config($sid, {'state' => 'stopped'}); | |
a875fbe8 | 705 | } else { |
289e4784 | 706 | $haenv->log('err', "unknown command '$cmd' for service '$sid'"); |
a875fbe8 | 707 | } |
21caf0db FE |
708 | |
709 | delete $sd->{cmd}; | |
710 | ||
a875fbe8 | 711 | } else { |
b0fdf86a | 712 | |
abc920b4 | 713 | my $try_next = 0; |
46139211 | 714 | |
ea4443cc | 715 | if ($lrm_res) { |
46139211 | 716 | |
e9e1cd68 TL |
717 | my $ec = $lrm_res->{exit_code}; |
718 | if ($ec == SUCCESS) { | |
719 | ||
46139211 | 720 | if (defined($sd->{failed_nodes})) { |
81449997 | 721 | $haenv->log('info', "relocation policy successful for '$sid' on node '$sd->{node}'," . |
46139211 TL |
722 | " failed nodes: " . join(', ', @{$sd->{failed_nodes}}) ); |
723 | } | |
724 | ||
725 | delete $sd->{failed_nodes}; | |
e9e1cd68 | 726 | |
b47920fd DM |
727 | # store flag to indicate successful start - only valid while state == 'started' |
728 | $sd->{running} = 1; | |
729 | ||
e9e1cd68 | 730 | } elsif ($ec == ERROR) { |
b47920fd DM |
731 | |
732 | delete $sd->{running}; | |
733 | ||
e9e1cd68 | 734 | # apply our relocate policy if we got ERROR from the LRM |
46139211 | 735 | $self->record_service_failed_on_node($sid, $sd->{node}); |
ea4443cc | 736 | |
46139211 | 737 | if (scalar(@{$sd->{failed_nodes}}) <= $cd->{max_relocate}) { |
ea4443cc | 738 | |
e9e1cd68 TL |
739 | # tell select_service_node to relocate if possible |
740 | $try_next = 1; | |
ea4443cc TL |
741 | |
742 | $haenv->log('warning', "starting service $sid on node". | |
743 | " '$sd->{node}' failed, relocating service."); | |
ea4443cc TL |
744 | |
745 | } else { | |
746 | ||
46139211 TL |
747 | $haenv->log('err', "recovery policy for service $sid " . |
748 | "failed, entering error state. Failed nodes: ". | |
749 | join(', ', @{$sd->{failed_nodes}})); | |
ea4443cc TL |
750 | &$change_service_state($self, $sid, 'error'); |
751 | return; | |
752 | ||
753 | } | |
e9e1cd68 | 754 | } else { |
46139211 TL |
755 | $self->record_service_failed_on_node($sid, $sd->{node}); |
756 | ||
e9e1cd68 TL |
757 | $haenv->log('err', "service '$sid' got unrecoverable error" . |
758 | " (exit code $ec))"); | |
759 | # we have no save way out (yet) for other errors | |
760 | &$change_service_state($self, $sid, 'error'); | |
35cbb764 | 761 | return; |
ea4443cc | 762 | } |
abc920b4 DM |
763 | } |
764 | ||
2167dd1e TL |
765 | my $node = select_service_node( |
766 | $self->{groups}, | |
767 | $self->{online_node_usage}, | |
b2598576 | 768 | $sid, |
2167dd1e TL |
769 | $cd, |
770 | $sd->{node}, | |
771 | $try_next, | |
772 | $sd->{failed_nodes}, | |
773 | $sd->{maintenance_node}, | |
774 | ); | |
abc920b4 | 775 | |
b0fdf86a | 776 | if ($node && ($sd->{node} ne $node)) { |
5d724d4d | 777 | $self->{online_node_usage}->add_service_usage_to_node($node, $sid, $sd->{node}); |
2167dd1e TL |
778 | |
779 | if (defined(my $fallback = $sd->{maintenance_node})) { | |
780 | if ($node eq $fallback) { | |
781 | $haenv->log('info', "moving service '$sid' back to '$fallback', node came back from maintenance."); | |
782 | delete $sd->{maintenance_node}; | |
783 | } elsif ($sd->{node} ne $fallback) { | |
784 | $haenv->log('info', "dropping maintenance fallback node '$fallback' for '$sid'"); | |
785 | delete $sd->{maintenance_node}; | |
786 | } | |
787 | } | |
788 | ||
c0255b2c TL |
789 | if ($cd->{type} eq 'vm') { |
790 | $haenv->log('info', "migrate service '$sid' to node '$node' (running)"); | |
791 | &$change_service_state($self, $sid, 'migrate', node => $sd->{node}, target => $node); | |
792 | } else { | |
793 | $haenv->log('info', "relocate service '$sid' to node '$node'"); | |
794 | &$change_service_state($self, $sid, 'relocate', node => $sd->{node}, target => $node); | |
795 | } | |
b0fdf86a | 796 | } else { |
e6eeb7dc TL |
797 | if ($try_next && !defined($node)) { |
798 | $haenv->log('warning', "Start Error Recovery: Tried all available " . | |
799 | " nodes for service '$sid', retry start on current node. " . | |
800 | "Tried nodes: " . join(', ', @{$sd->{failed_nodes}})); | |
801 | } | |
35cbb764 | 802 | # ensure service get started again if it went unexpected down |
bf2d8d74 TL |
803 | # but ensure also no LRM result gets lost |
804 | $sd->{uid} = compute_new_uuid($sd->{state}) if defined($lrm_res); | |
b0fdf86a | 805 | } |
a875fbe8 | 806 | } |
e88469ba DM |
807 | |
808 | return; | |
35cbb764 | 809 | } |
e88469ba DM |
810 | |
811 | $haenv->log('err', "service '$sid' - unknown state '$cd->{state}' in service configuration"); | |
a875fbe8 | 812 | } |
c0bbd038 | 813 | |
a2881965 TL |
814 | sub next_state_error { |
815 | my ($self, $sid, $cd, $sd, $lrm_res) = @_; | |
816 | ||
817 | my $ns = $self->{ns}; | |
46139211 | 818 | my $ms = $self->{ms}; |
a2881965 TL |
819 | |
820 | if ($cd->{state} eq 'disabled') { | |
46139211 TL |
821 | # clean up on error recovery |
822 | delete $sd->{failed_nodes}; | |
823 | ||
a2881965 TL |
824 | &$change_service_state($self, $sid, 'stopped'); |
825 | return; | |
826 | } | |
827 | ||
a2881965 TL |
828 | } |
829 | ||
c259b1a8 TL |
830 | # after a node was fenced this recovers the service to a new node |
831 | sub next_state_recovery { | |
832 | my ($self, $sid, $cd, $sd, $lrm_res) = @_; | |
833 | ||
834 | my ($haenv, $ss) = ($self->{haenv}, $self->{ss}); | |
835 | my $ns = $self->{ns}; | |
836 | my $ms = $self->{ms}; | |
837 | ||
838 | if ($sd->{state} ne 'recovery') { # should not happen | |
839 | $haenv->log('err', "cannot recover service '$sid' from fencing, wrong state '$sd->{state}'"); | |
840 | return; | |
841 | } | |
842 | ||
843 | my $fenced_node = $sd->{node}; # for logging purpose | |
844 | ||
845 | $self->recompute_online_node_usage(); # we want the most current node state | |
846 | ||
847 | my $recovery_node = select_service_node( | |
848 | $self->{groups}, | |
849 | $self->{online_node_usage}, | |
b2598576 | 850 | $sid, |
c259b1a8 TL |
851 | $cd, |
852 | $sd->{node}, | |
853 | ); | |
854 | ||
855 | if ($recovery_node) { | |
90a24755 TL |
856 | my $msg = "recover service '$sid' from fenced node '$fenced_node' to node '$recovery_node'"; |
857 | if ($recovery_node eq $fenced_node) { | |
858 | # can happen if restriced groups and the node came up again OK | |
859 | $msg = "recover service '$sid' to previous failed and fenced node '$fenced_node' again"; | |
860 | } | |
861 | $haenv->log('info', "$msg"); | |
c259b1a8 TL |
862 | |
863 | $fence_recovery_cleanup->($self, $sid, $fenced_node); | |
864 | ||
865 | $haenv->steal_service($sid, $sd->{node}, $recovery_node); | |
5d724d4d | 866 | $self->{online_node_usage}->add_service_usage_to_node($recovery_node, $sid, $recovery_node); |
c259b1a8 TL |
867 | |
868 | # NOTE: $sd *is normally read-only*, fencing is the exception | |
869 | $cd->{node} = $sd->{node} = $recovery_node; | |
870 | my $new_state = ($cd->{state} eq 'started') ? 'started' : 'request_stop'; | |
871 | $change_service_state->($self, $sid, $new_state, node => $recovery_node); | |
872 | } else { | |
873 | # no possible node found, cannot recover - but retry later, as we always try to make it available | |
874 | $haenv->log('err', "recovering service '$sid' from fenced node '$fenced_node' failed, no recovery node found"); | |
719883e9 TL |
875 | |
876 | if ($cd->{state} eq 'disabled') { | |
877 | # allow getting a service out of recovery manually if an admin disables it. | |
878 | delete $sd->{failed_nodes}; # clean up on recovery to stopped | |
879 | $change_service_state->($self, $sid, 'stopped'); # must NOT go through request_stop | |
880 | return; | |
881 | } | |
c259b1a8 TL |
882 | } |
883 | } | |
884 | ||
c0bbd038 | 885 | 1; |