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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 | 54 | |
f74f8ffb FE |
55 | my $dc_cfg = $haenv->get_datacenter_settings(); |
56 | $self->{'scheduler-mode'} = $dc_cfg->{crs}->{ha} ? $dc_cfg->{crs}->{ha} : 'basic'; | |
57 | $haenv->log('info', "using scheduler mode '$self->{'scheduler-mode'}'") | |
58 | if $self->{'scheduler-mode'} ne 'basic'; | |
59 | ||
c0bbd038 DM |
60 | return $self; |
61 | } | |
62 | ||
d84da043 DM |
63 | sub cleanup { |
64 | my ($self) = @_; | |
65 | ||
66 | # todo: ? | |
67 | } | |
68 | ||
8f0bb968 | 69 | sub flush_master_status { |
c0bbd038 DM |
70 | my ($self) = @_; |
71 | ||
59fd7207 | 72 | my ($haenv, $ms, $ns, $ss) = ($self->{haenv}, $self->{ms}, $self->{ns}, $self->{ss}); |
c0bbd038 | 73 | |
8f0bb968 | 74 | $ms->{node_status} = $ns->{status}; |
59fd7207 | 75 | $ms->{service_status} = $ss; |
d2f612cf | 76 | $ms->{timestamp} = $haenv->get_time(); |
289e4784 | 77 | |
8f0bb968 | 78 | $haenv->write_manager_status($ms); |
289e4784 | 79 | } |
c0bbd038 | 80 | |
48a6ba2a TL |
81 | sub get_service_group { |
82 | my ($groups, $online_node_usage, $service_conf) = @_; | |
f7ccd1b3 | 83 | |
09c5c4bf TL |
84 | my $group = {}; |
85 | # add all online nodes to default group to allow try_next when no group set | |
5d724d4d | 86 | $group->{nodes}->{$_} = 1 for $online_node_usage->list_nodes(); |
abc920b4 | 87 | |
09c5c4bf | 88 | # overwrite default if service is bound to a specific group |
3458a0e3 TL |
89 | if (my $group_id = $service_conf->{group}) { |
90 | $group = $groups->{ids}->{$group_id} if $groups->{ids}->{$group_id}; | |
91 | } | |
abc920b4 | 92 | |
48a6ba2a TL |
93 | return $group; |
94 | } | |
95 | ||
96 | # groups available nodes with their priority as group index | |
97 | sub get_node_priority_groups { | |
98 | my ($group, $online_node_usage) = @_; | |
99 | ||
abc920b4 DM |
100 | my $pri_groups = {}; |
101 | my $group_members = {}; | |
e0a56314 | 102 | foreach my $entry (keys %{$group->{nodes}}) { |
abc920b4 DM |
103 | my ($node, $pri) = ($entry, 0); |
104 | if ($entry =~ m/^(\S+):(\d+)$/) { | |
105 | ($node, $pri) = ($1, $2); | |
106 | } | |
5d724d4d | 107 | next if !$online_node_usage->contains_node($node); # offline |
abc920b4 DM |
108 | $pri_groups->{$pri}->{$node} = 1; |
109 | $group_members->{$node} = $pri; | |
110 | } | |
f7ccd1b3 | 111 | |
abc920b4 DM |
112 | # add non-group members to unrestricted groups (priority -1) |
113 | if (!$group->{restricted}) { | |
114 | my $pri = -1; | |
5d724d4d | 115 | for my $node ($online_node_usage->list_nodes()) { |
abc920b4 DM |
116 | next if defined($group_members->{$node}); |
117 | $pri_groups->{$pri}->{$node} = 1; | |
118 | $group_members->{$node} = -1; | |
119 | } | |
120 | } | |
121 | ||
48a6ba2a TL |
122 | return ($pri_groups, $group_members); |
123 | } | |
124 | ||
125 | sub select_service_node { | |
b2598576 | 126 | my ($groups, $online_node_usage, $sid, $service_conf, $current_node, $try_next, $tried_nodes, $maintenance_fallback) = @_; |
48a6ba2a TL |
127 | |
128 | my $group = get_service_group($groups, $online_node_usage, $service_conf); | |
129 | ||
130 | my ($pri_groups, $group_members) = get_node_priority_groups($group, $online_node_usage); | |
131 | ||
abc920b4 DM |
132 | my @pri_list = sort {$b <=> $a} keys %$pri_groups; |
133 | return undef if !scalar(@pri_list); | |
09c5c4bf TL |
134 | |
135 | # stay on current node if possible (avoids random migrations) | |
abc920b4 DM |
136 | if (!$try_next && $group->{nofailback} && defined($group_members->{$current_node})) { |
137 | return $current_node; | |
138 | } | |
139 | ||
140 | # select node from top priority node list | |
141 | ||
142 | my $top_pri = $pri_list[0]; | |
143 | ||
e6eeb7dc TL |
144 | # try to avoid nodes where the service failed already if we want to relocate |
145 | if ($try_next) { | |
146 | foreach my $node (@$tried_nodes) { | |
147 | delete $pri_groups->{$top_pri}->{$node}; | |
148 | } | |
149 | } | |
150 | ||
5d724d4d | 151 | my $scores = $online_node_usage->score_nodes_to_start_service($sid, $current_node); |
289e4784 | 152 | my @nodes = sort { |
5d724d4d | 153 | $scores->{$a} <=> $scores->{$b} || $a cmp $b |
c142ebc9 | 154 | } keys %{$pri_groups->{$top_pri}}; |
abc920b4 DM |
155 | |
156 | my $found; | |
1280368d | 157 | my $found_maintenance_fallback; |
abc920b4 DM |
158 | for (my $i = scalar(@nodes) - 1; $i >= 0; $i--) { |
159 | my $node = $nodes[$i]; | |
160 | if ($node eq $current_node) { | |
161 | $found = $i; | |
abc920b4 | 162 | } |
2167dd1e | 163 | if (defined($maintenance_fallback) && $node eq $maintenance_fallback) { |
1280368d | 164 | $found_maintenance_fallback = $i; |
2167dd1e TL |
165 | } |
166 | } | |
167 | ||
1280368d TL |
168 | if (defined($found_maintenance_fallback)) { |
169 | return $nodes[$found_maintenance_fallback]; | |
abc920b4 DM |
170 | } |
171 | ||
abc920b4 | 172 | if ($try_next) { |
abc920b4 DM |
173 | if (defined($found) && ($found < (scalar(@nodes) - 1))) { |
174 | return $nodes[$found + 1]; | |
175 | } else { | |
176 | return $nodes[0]; | |
177 | } | |
3ac4cc87 TL |
178 | } elsif (defined($found)) { |
179 | return $nodes[$found]; | |
abc920b4 | 180 | } else { |
abc920b4 | 181 | return $nodes[0]; |
abc920b4 | 182 | } |
f7ccd1b3 DM |
183 | } |
184 | ||
c4a221bc DM |
185 | my $uid_counter = 0; |
186 | ||
d55aa611 DM |
187 | sub compute_new_uuid { |
188 | my ($state) = @_; | |
289e4784 | 189 | |
d55aa611 DM |
190 | $uid_counter++; |
191 | return md5_base64($state . $$ . time() . $uid_counter); | |
192 | } | |
193 | ||
618fbeda DM |
194 | my $valid_service_states = { |
195 | stopped => 1, | |
196 | request_stop => 1, | |
197 | started => 1, | |
198 | fence => 1, | |
c259b1a8 | 199 | recovery => 1, |
618fbeda | 200 | migrate => 1, |
b0fdf86a | 201 | relocate => 1, |
9c7d068b | 202 | freeze => 1, |
618fbeda DM |
203 | error => 1, |
204 | }; | |
205 | ||
270d4406 DM |
206 | sub recompute_online_node_usage { |
207 | my ($self) = @_; | |
208 | ||
5d724d4d | 209 | my $online_node_usage = PVE::HA::Usage::Basic->new($self->{haenv}); |
270d4406 DM |
210 | |
211 | my $online_nodes = $self->{ns}->list_online_nodes(); | |
212 | ||
5d724d4d | 213 | $online_node_usage->add_node($_) for $online_nodes->@*; |
270d4406 DM |
214 | |
215 | foreach my $sid (keys %{$self->{ss}}) { | |
216 | my $sd = $self->{ss}->{$sid}; | |
217 | my $state = $sd->{state}; | |
6f818da1 | 218 | my $target = $sd->{target}; # optional |
5d724d4d | 219 | if ($online_node_usage->contains_node($sd->{node})) { |
c259b1a8 TL |
220 | if ( |
221 | $state eq 'started' || $state eq 'request_stop' || $state eq 'fence' || | |
222 | $state eq 'freeze' || $state eq 'error' || $state eq 'recovery' | |
223 | ) { | |
5d724d4d | 224 | $online_node_usage->add_service_usage_to_node($sd->{node}, $sid, $sd->{node}); |
270d4406 | 225 | } elsif (($state eq 'migrate') || ($state eq 'relocate')) { |
5d724d4d | 226 | my $source = $sd->{node}; |
5c2eef4b | 227 | # count it for both, source and target as load is put on both |
5d724d4d FE |
228 | $online_node_usage->add_service_usage_to_node($source, $sid, $source, $target); |
229 | $online_node_usage->add_service_usage_to_node($target, $sid, $source, $target); | |
270d4406 DM |
230 | } elsif ($state eq 'stopped') { |
231 | # do nothing | |
232 | } else { | |
feea3913 | 233 | die "should not be reached (sid = '$sid', state = '$state')"; |
270d4406 | 234 | } |
5d724d4d | 235 | } elsif (defined($target) && $online_node_usage->contains_node($target)) { |
066fd016 TL |
236 | if ($state eq 'migrate' || $state eq 'relocate') { |
237 | # to correctly track maintenance modi and also consider the target as used for the | |
238 | # case a node dies, as we cannot really know if the to-be-aborted incoming migration | |
239 | # has already cleaned up all used resources | |
5d724d4d | 240 | $online_node_usage->add_service_usage_to_node($target, $sid, $sd->{node}, $target); |
066fd016 | 241 | } |
270d4406 DM |
242 | } |
243 | } | |
244 | ||
245 | $self->{online_node_usage} = $online_node_usage; | |
246 | } | |
247 | ||
4e01bc86 DM |
248 | my $change_service_state = sub { |
249 | my ($self, $sid, $new_state, %params) = @_; | |
250 | ||
251 | my ($haenv, $ss) = ($self->{haenv}, $self->{ss}); | |
252 | ||
253 | my $sd = $ss->{$sid} || die "no such service '$sid"; | |
254 | ||
255 | my $old_state = $sd->{state}; | |
e4ffb299 | 256 | my $old_node = $sd->{node}; |
46139211 | 257 | my $old_failed_nodes = $sd->{failed_nodes}; |
2167dd1e | 258 | my $old_maintenance_node = $sd->{maintenance_node}; |
4e01bc86 DM |
259 | |
260 | die "no state change" if $old_state eq $new_state; # just to be sure | |
261 | ||
618fbeda DM |
262 | die "invalid CRM service state '$new_state'\n" if !$valid_service_states->{$new_state}; |
263 | ||
e4ffb299 DM |
264 | foreach my $k (keys %$sd) { delete $sd->{$k}; }; |
265 | ||
266 | $sd->{state} = $new_state; | |
267 | $sd->{node} = $old_node; | |
ea998b07 | 268 | $sd->{failed_nodes} = $old_failed_nodes if defined($old_failed_nodes); |
2167dd1e | 269 | $sd->{maintenance_node} = $old_maintenance_node if defined($old_maintenance_node); |
e4ffb299 DM |
270 | |
271 | my $text_state = ''; | |
ba623362 | 272 | foreach my $k (sort keys %params) { |
4e01bc86 | 273 | my $v = $params{$k}; |
e4ffb299 DM |
274 | $text_state .= ", " if $text_state; |
275 | $text_state .= "$k = $v"; | |
4e01bc86 DM |
276 | $sd->{$k} = $v; |
277 | } | |
270d4406 DM |
278 | |
279 | $self->recompute_online_node_usage(); | |
280 | ||
d55aa611 | 281 | $sd->{uid} = compute_new_uuid($new_state); |
4e01bc86 | 282 | |
24678a59 TL |
283 | $text_state = " ($text_state)" if $text_state; |
284 | $haenv->log('info', "service '$sid': state changed from '${old_state}'" . | |
285 | " to '${new_state}'$text_state"); | |
4e01bc86 DM |
286 | }; |
287 | ||
5dd3ed86 TL |
288 | # clean up a possible bad state from a recovered service to allow its start |
289 | my $fence_recovery_cleanup = sub { | |
290 | my ($self, $sid, $fenced_node) = @_; | |
291 | ||
292 | my $haenv = $self->{haenv}; | |
293 | ||
0087839a | 294 | my (undef, $type, $id) = $haenv->parse_sid($sid); |
5dd3ed86 TL |
295 | my $plugin = PVE::HA::Resources->lookup($type); |
296 | ||
297 | # should not happen | |
298 | die "unknown resource type '$type'" if !$plugin; | |
299 | ||
32ea51dd TL |
300 | # locks may block recovery, cleanup those which are safe to remove after fencing, |
301 | # i.e., after the original node was reset and thus all it's state | |
3458a0e3 TL |
302 | my $removable_locks = [ |
303 | 'backup', | |
304 | 'mounted', | |
305 | 'migrate', | |
306 | 'clone', | |
307 | 'rollback', | |
308 | 'snapshot', | |
309 | 'snapshot-delete', | |
310 | 'suspending', | |
311 | 'suspended', | |
312 | ]; | |
5dd3ed86 TL |
313 | if (my $removed_lock = $plugin->remove_locks($haenv, $id, $removable_locks, $fenced_node)) { |
314 | $haenv->log('warning', "removed leftover lock '$removed_lock' from recovered " . | |
315 | "service '$sid' to allow its start."); | |
316 | } | |
317 | }; | |
318 | ||
289e4784 | 319 | # read LRM status for all nodes |
c4a221bc | 320 | sub read_lrm_status { |
332170bd | 321 | my ($self) = @_; |
c4a221bc | 322 | |
9c7d068b | 323 | my $nodes = $self->{ns}->list_nodes(); |
c4a221bc DM |
324 | my $haenv = $self->{haenv}; |
325 | ||
9c7d068b DM |
326 | my $results = {}; |
327 | my $modes = {}; | |
332170bd | 328 | foreach my $node (@$nodes) { |
9c7d068b | 329 | my $lrm_status = $haenv->read_lrm_status($node); |
02ffd753 | 330 | $modes->{$node} = $lrm_status->{mode} || 'active'; |
9c7d068b DM |
331 | foreach my $uid (keys %{$lrm_status->{results}}) { |
332 | next if $results->{$uid}; # should not happen | |
333 | $results->{$uid} = $lrm_status->{results}->{$uid}; | |
c4a221bc DM |
334 | } |
335 | } | |
336 | ||
9c7d068b | 337 | return ($results, $modes); |
c4a221bc DM |
338 | } |
339 | ||
aa98a844 DM |
340 | # read new crm commands and save them into crm master status |
341 | sub update_crm_commands { | |
342 | my ($self) = @_; | |
343 | ||
344 | my ($haenv, $ms, $ns, $ss) = ($self->{haenv}, $self->{ms}, $self->{ns}, $self->{ss}); | |
345 | ||
346 | my $cmdlist = $haenv->read_crm_commands(); | |
bf7febe3 | 347 | |
aa98a844 DM |
348 | foreach my $cmd (split(/\n/, $cmdlist)) { |
349 | chomp $cmd; | |
350 | ||
b0fdf86a | 351 | if ($cmd =~ m/^(migrate|relocate)\s+(\S+)\s+(\S+)$/) { |
289e4784 | 352 | my ($task, $sid, $node) = ($1, $2, $3); |
aa98a844 DM |
353 | if (my $sd = $ss->{$sid}) { |
354 | if (!$ns->node_is_online($node)) { | |
355 | $haenv->log('err', "crm command error - node not online: $cmd"); | |
356 | } else { | |
357 | if ($node eq $sd->{node}) { | |
358 | $haenv->log('info', "ignore crm command - service already on target node: $cmd"); | |
289e4784 | 359 | } else { |
aa98a844 | 360 | $haenv->log('info', "got crm command: $cmd"); |
3d42b01b | 361 | $ss->{$sid}->{cmd} = [ $task, $node ]; |
aa98a844 DM |
362 | } |
363 | } | |
364 | } else { | |
365 | $haenv->log('err', "crm command error - no such service: $cmd"); | |
366 | } | |
367 | ||
21caf0db FE |
368 | } elsif ($cmd =~ m/^stop\s+(\S+)\s+(\S+)$/) { |
369 | my ($sid, $timeout) = ($1, $2); | |
370 | if (my $sd = $ss->{$sid}) { | |
371 | $haenv->log('info', "got crm command: $cmd"); | |
372 | $ss->{$sid}->{cmd} = [ 'stop', $timeout ]; | |
373 | } else { | |
374 | $haenv->log('err', "crm command error - no such service: $cmd"); | |
375 | } | |
aa98a844 DM |
376 | } else { |
377 | $haenv->log('err', "unable to parse crm command: $cmd"); | |
378 | } | |
379 | } | |
380 | ||
381 | } | |
382 | ||
8f0bb968 DM |
383 | sub manage { |
384 | my ($self) = @_; | |
c0bbd038 | 385 | |
59fd7207 | 386 | my ($haenv, $ms, $ns, $ss) = ($self->{haenv}, $self->{ms}, $self->{ns}, $self->{ss}); |
c0bbd038 | 387 | |
99278e06 TL |
388 | my ($node_info) = $haenv->get_node_info(); |
389 | my ($lrm_results, $lrm_modes) = $self->read_lrm_status(); | |
390 | ||
391 | $ns->update($node_info, $lrm_modes); | |
c79442f2 | 392 | |
99278e06 | 393 | if (!$ns->node_is_operational($haenv->nodename())) { |
e5986717 | 394 | $haenv->log('info', "master seems offline"); |
c79442f2 DM |
395 | return; |
396 | } | |
397 | ||
f7ccd1b3 DM |
398 | my $sc = $haenv->read_service_config(); |
399 | ||
abc920b4 DM |
400 | $self->{groups} = $haenv->read_group_config(); # update |
401 | ||
f7ccd1b3 DM |
402 | # compute new service status |
403 | ||
404 | # add new service | |
cc32a8f3 | 405 | foreach my $sid (sort keys %$sc) { |
f7ccd1b3 | 406 | next if $ss->{$sid}; # already there |
77499288 | 407 | my $cd = $sc->{$sid}; |
667670b2 TL |
408 | next if $cd->{state} eq 'ignored'; |
409 | ||
77499288 | 410 | $haenv->log('info', "adding new service '$sid' on node '$cd->{node}'"); |
f7ccd1b3 | 411 | # assume we are running to avoid relocate running service at add |
bb07bd2c | 412 | my $state = ($cd->{state} eq 'started') ? 'started' : 'request_stop'; |
77499288 | 413 | $ss->{$sid} = { state => $state, node => $cd->{node}, |
d55aa611 | 414 | uid => compute_new_uuid('started') }; |
f7ccd1b3 DM |
415 | } |
416 | ||
667670b2 | 417 | # remove stale or ignored services from manager state |
4e5764af | 418 | foreach my $sid (keys %$ss) { |
667670b2 TL |
419 | next if $sc->{$sid} && $sc->{$sid}->{state} ne 'ignored'; |
420 | ||
421 | my $reason = defined($sc->{$sid}) ? 'ignored state requested' : 'no config'; | |
422 | $haenv->log('info', "removing stale service '$sid' ($reason)"); | |
423 | ||
46139211 | 424 | # remove all service related state information |
4e5764af DM |
425 | delete $ss->{$sid}; |
426 | } | |
5a28da91 | 427 | |
aa98a844 DM |
428 | $self->update_crm_commands(); |
429 | ||
c79442f2 DM |
430 | for (;;) { |
431 | my $repeat = 0; | |
289e4784 | 432 | |
270d4406 | 433 | $self->recompute_online_node_usage(); |
f7ccd1b3 | 434 | |
a5e4bef4 | 435 | foreach my $sid (sort keys %$ss) { |
c79442f2 DM |
436 | my $sd = $ss->{$sid}; |
437 | my $cd = $sc->{$sid} || { state => 'disabled' }; | |
f7ccd1b3 | 438 | |
9c7d068b | 439 | my $lrm_res = $sd->{uid} ? $lrm_results->{$sd->{uid}} : undef; |
a875fbe8 | 440 | |
c79442f2 DM |
441 | my $last_state = $sd->{state}; |
442 | ||
443 | if ($last_state eq 'stopped') { | |
444 | ||
abc920b4 | 445 | $self->next_state_stopped($sid, $cd, $sd, $lrm_res); |
f7ccd1b3 | 446 | |
c79442f2 | 447 | } elsif ($last_state eq 'started') { |
f7ccd1b3 | 448 | |
abc920b4 | 449 | $self->next_state_started($sid, $cd, $sd, $lrm_res); |
f7ccd1b3 | 450 | |
b0fdf86a | 451 | } elsif ($last_state eq 'migrate' || $last_state eq 'relocate') { |
f7ccd1b3 | 452 | |
8aaa0e36 | 453 | $self->next_state_migrate_relocate($sid, $cd, $sd, $lrm_res); |
f7ccd1b3 | 454 | |
c79442f2 | 455 | } elsif ($last_state eq 'fence') { |
f7ccd1b3 | 456 | |
21e37ed4 | 457 | # do nothing here - wait until fenced |
f7ccd1b3 | 458 | |
c259b1a8 TL |
459 | } elsif ($last_state eq 'recovery') { |
460 | ||
461 | $self->next_state_recovery($sid, $cd, $sd, $lrm_res); | |
462 | ||
c79442f2 | 463 | } elsif ($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) { |
2deff1ae TL |
498 | my ($service_state, $service_node) = $ss->{$sid}->@{'state', 'node'}; |
499 | next if $service_state ne 'fence'; | |
0dcb6597 TL |
500 | |
501 | if (!defined($fenced_nodes->{$service_node})) { | |
2deff1ae | 502 | $fenced_nodes->{$service_node} = $ns->fence_node($service_node) || 0; |
21e37ed4 DM |
503 | } |
504 | ||
0dcb6597 | 505 | next if !$fenced_nodes->{$service_node}; |
21e37ed4 | 506 | |
9da84a0d | 507 | # node fence was successful - recover service |
c259b1a8 | 508 | $change_service_state->($self, $sid, 'recovery'); |
0dcb6597 | 509 | $repeat = 1; # for faster recovery execution |
21e37ed4 DM |
510 | } |
511 | ||
2deff1ae TL |
512 | # Avoid that a node without services in 'fence' state (e.g., removed |
513 | # manually by admin) is stuck with the 'fence' node state. | |
514 | for my $node (sort grep { !defined($fenced_nodes->{$_}) } keys $ns->{status}->%*) { | |
7dc92703 | 515 | next if $ns->get_node_state($node) ne 'fence'; |
7dc92703 | 516 | |
2deff1ae TL |
517 | $haenv->log('notice', "node '$node' in fence state but no services to-fence! admin interference?!"); |
518 | $repeat = 1 if $ns->fence_node($node); | |
7dc92703 FE |
519 | } |
520 | ||
c79442f2 | 521 | last if !$repeat; |
f7ccd1b3 | 522 | } |
f7ccd1b3 | 523 | |
8f0bb968 | 524 | $self->flush_master_status(); |
c0bbd038 DM |
525 | } |
526 | ||
a875fbe8 DM |
527 | # functions to compute next service states |
528 | # $cd: service configuration data (read only) | |
529 | # $sd: service status data (read only) | |
530 | # | |
531 | # Note: use change_service_state() to alter state | |
532 | # | |
533 | ||
0df5b3dd DM |
534 | sub next_state_request_stop { |
535 | my ($self, $sid, $cd, $sd, $lrm_res) = @_; | |
536 | ||
537 | my $haenv = $self->{haenv}; | |
538 | my $ns = $self->{ns}; | |
539 | ||
540 | # check result from LRM daemon | |
541 | if ($lrm_res) { | |
542 | my $exit_code = $lrm_res->{exit_code}; | |
a89ff919 | 543 | if ($exit_code == SUCCESS) { |
0df5b3dd DM |
544 | &$change_service_state($self, $sid, 'stopped'); |
545 | return; | |
546 | } else { | |
33f01524 | 547 | $haenv->log('err', "service '$sid' stop failed (exit code $exit_code)"); |
0df5b3dd DM |
548 | &$change_service_state($self, $sid, 'error'); # fixme: what state? |
549 | return; | |
550 | } | |
551 | } | |
552 | ||
ce3d7003 | 553 | if ($ns->node_is_offline_delayed($sd->{node})) { |
0df5b3dd DM |
554 | &$change_service_state($self, $sid, 'fence'); |
555 | return; | |
556 | } | |
557 | } | |
558 | ||
8aaa0e36 DM |
559 | sub next_state_migrate_relocate { |
560 | my ($self, $sid, $cd, $sd, $lrm_res) = @_; | |
561 | ||
562 | my $haenv = $self->{haenv}; | |
563 | my $ns = $self->{ns}; | |
564 | ||
565 | # check result from LRM daemon | |
566 | if ($lrm_res) { | |
567 | my $exit_code = $lrm_res->{exit_code}; | |
bb07bd2c | 568 | my $req_state = $cd->{state} eq 'started' ? 'started' : 'request_stop'; |
a89ff919 | 569 | if ($exit_code == SUCCESS) { |
542a9902 | 570 | &$change_service_state($self, $sid, $req_state, node => $sd->{target}); |
8aaa0e36 | 571 | return; |
660596ce TL |
572 | } elsif ($exit_code == EWRONG_NODE) { |
573 | $haenv->log('err', "service '$sid' - migration failed: service" . | |
574 | " registered on wrong node!"); | |
575 | &$change_service_state($self, $sid, 'error'); | |
8aaa0e36 DM |
576 | } else { |
577 | $haenv->log('err', "service '$sid' - migration failed (exit code $exit_code)"); | |
542a9902 | 578 | &$change_service_state($self, $sid, $req_state, node => $sd->{node}); |
8aaa0e36 DM |
579 | return; |
580 | } | |
581 | } | |
582 | ||
ce3d7003 | 583 | if ($ns->node_is_offline_delayed($sd->{node})) { |
8aaa0e36 DM |
584 | &$change_service_state($self, $sid, 'fence'); |
585 | return; | |
586 | } | |
587 | } | |
588 | ||
a875fbe8 | 589 | sub next_state_stopped { |
abc920b4 | 590 | my ($self, $sid, $cd, $sd, $lrm_res) = @_; |
a875fbe8 DM |
591 | |
592 | my $haenv = $self->{haenv}; | |
e88469ba | 593 | my $ns = $self->{ns}; |
a875fbe8 | 594 | |
ff6f1c5c DM |
595 | if ($sd->{node} ne $cd->{node}) { |
596 | # this can happen if we fence a node with active migrations | |
597 | # hack: modify $sd (normally this should be considered read-only) | |
24678a59 | 598 | $haenv->log('info', "fixup service '$sid' location ($sd->{node} => $cd->{node})"); |
289e4784 | 599 | $sd->{node} = $cd->{node}; |
ff6f1c5c DM |
600 | } |
601 | ||
94b7ebe2 | 602 | if ($sd->{cmd}) { |
21caf0db | 603 | my $cmd = shift @{$sd->{cmd}}; |
94b7ebe2 | 604 | |
b0fdf86a | 605 | if ($cmd eq 'migrate' || $cmd eq 'relocate') { |
21caf0db | 606 | my $target = shift @{$sd->{cmd}}; |
94b7ebe2 | 607 | if (!$ns->node_is_online($target)) { |
b0fdf86a | 608 | $haenv->log('err', "ignore service '$sid' $cmd request - node '$target' not online"); |
e88469ba | 609 | } elsif ($sd->{node} eq $target) { |
b0fdf86a | 610 | $haenv->log('info', "ignore service '$sid' $cmd request - service already on node '$target'"); |
94b7ebe2 | 611 | } else { |
9dad9c88 TL |
612 | &$change_service_state($self, $sid, $cmd, node => $sd->{node}, |
613 | target => $target); | |
9da84a0d | 614 | return; |
94b7ebe2 | 615 | } |
21caf0db FE |
616 | } elsif ($cmd eq 'stop') { |
617 | $haenv->log('info', "ignore service '$sid' $cmd request - service already stopped"); | |
94b7ebe2 | 618 | } else { |
289e4784 | 619 | $haenv->log('err', "unknown command '$cmd' for service '$sid'"); |
94b7ebe2 | 620 | } |
21caf0db | 621 | delete $sd->{cmd}; |
35cbb764 | 622 | } |
94b7ebe2 | 623 | |
a875fbe8 | 624 | if ($cd->{state} eq 'disabled') { |
35cbb764 TL |
625 | # NOTE: do nothing here, the stop state is an exception as we do not |
626 | # process the LRM result here, thus the LRM always tries to stop the | |
627 | # service (protection for the case no CRM is active) | |
e88469ba | 628 | return; |
35cbb764 | 629 | } |
e88469ba | 630 | |
84c945e4 | 631 | if ($ns->node_is_offline_delayed($sd->{node}) && $ns->get_node_state($sd->{node}) ne 'maintenance') { |
af14d5f3 TL |
632 | &$change_service_state($self, $sid, 'fence'); |
633 | return; | |
634 | } | |
635 | ||
636 | if ($cd->{state} eq 'stopped') { | |
637 | # almost the same as 'disabled' state but the service will also get recovered | |
638 | return; | |
639 | } | |
640 | ||
bb07bd2c | 641 | if ($cd->{state} eq 'started') { |
9da84a0d TL |
642 | # simply mark it started, if it's on the wrong node |
643 | # next_state_started will fix that for us | |
644 | &$change_service_state($self, $sid, 'started', node => $sd->{node}); | |
e88469ba | 645 | return; |
a875fbe8 | 646 | } |
e88469ba DM |
647 | |
648 | $haenv->log('err', "service '$sid' - unknown state '$cd->{state}' in service configuration"); | |
a875fbe8 DM |
649 | } |
650 | ||
46139211 | 651 | sub record_service_failed_on_node { |
57fe8e87 | 652 | my ($self, $sid, $node) = @_; |
46139211 | 653 | |
57fe8e87 DM |
654 | if (!defined($self->{ss}->{$sid}->{failed_nodes})) { |
655 | $self->{ss}->{$sid}->{failed_nodes} = []; | |
656 | } | |
46139211 | 657 | |
57fe8e87 | 658 | push @{$self->{ss}->{$sid}->{failed_nodes}}, $node; |
46139211 TL |
659 | } |
660 | ||
a875fbe8 | 661 | sub next_state_started { |
abc920b4 | 662 | my ($self, $sid, $cd, $sd, $lrm_res) = @_; |
a875fbe8 DM |
663 | |
664 | my $haenv = $self->{haenv}; | |
ea4443cc | 665 | my $master_status = $self->{ms}; |
a875fbe8 DM |
666 | my $ns = $self->{ns}; |
667 | ||
668 | if (!$ns->node_is_online($sd->{node})) { | |
b0e9158d | 669 | if ($ns->node_is_offline_delayed($sd->{node})) { |
5385a606 DM |
670 | &$change_service_state($self, $sid, 'fence'); |
671 | } | |
99278e06 TL |
672 | if ($ns->get_node_state($sd->{node}) ne 'maintenance') { |
673 | return; | |
2167dd1e TL |
674 | } else { |
675 | # save current node as fallback for when it comes out of | |
676 | # maintenance | |
677 | $sd->{maintenance_node} = $sd->{node}; | |
99278e06 | 678 | } |
e88469ba | 679 | } |
289e4784 | 680 | |
af14d5f3 | 681 | if ($cd->{state} eq 'disabled' || $cd->{state} eq 'stopped') { |
e88469ba DM |
682 | &$change_service_state($self, $sid, 'request_stop'); |
683 | return; | |
684 | } | |
685 | ||
bb07bd2c | 686 | if ($cd->{state} eq 'started') { |
e88469ba DM |
687 | |
688 | if ($sd->{cmd}) { | |
21caf0db | 689 | my $cmd = shift @{$sd->{cmd}}; |
e88469ba | 690 | |
b0fdf86a | 691 | if ($cmd eq 'migrate' || $cmd eq 'relocate') { |
21caf0db | 692 | my $target = shift @{$sd->{cmd}}; |
e88469ba | 693 | if (!$ns->node_is_online($target)) { |
b0fdf86a | 694 | $haenv->log('err', "ignore service '$sid' $cmd request - node '$target' not online"); |
e88469ba | 695 | } elsif ($sd->{node} eq $target) { |
b0fdf86a | 696 | $haenv->log('info', "ignore service '$sid' $cmd request - service already on node '$target'"); |
e88469ba | 697 | } else { |
a3cb8dcb | 698 | $haenv->log('info', "$cmd service '$sid' to node '$target'"); |
b0fdf86a | 699 | &$change_service_state($self, $sid, $cmd, node => $sd->{node}, target => $target); |
e88469ba | 700 | } |
21caf0db FE |
701 | } elsif ($cmd eq 'stop') { |
702 | my $timeout = shift @{$sd->{cmd}}; | |
396eb6f0 TL |
703 | if ($timeout == 0) { |
704 | $haenv->log('info', "request immediate service hard-stop for service '$sid'"); | |
705 | } else { | |
706 | $haenv->log('info', "request graceful stop with timeout '$timeout' for service '$sid'"); | |
707 | } | |
21caf0db FE |
708 | &$change_service_state($self, $sid, 'request_stop', timeout => $timeout); |
709 | $haenv->update_service_config($sid, {'state' => 'stopped'}); | |
a875fbe8 | 710 | } else { |
289e4784 | 711 | $haenv->log('err', "unknown command '$cmd' for service '$sid'"); |
a875fbe8 | 712 | } |
21caf0db FE |
713 | |
714 | delete $sd->{cmd}; | |
715 | ||
a875fbe8 | 716 | } else { |
b0fdf86a | 717 | |
abc920b4 | 718 | my $try_next = 0; |
46139211 | 719 | |
ea4443cc | 720 | if ($lrm_res) { |
46139211 | 721 | |
e9e1cd68 TL |
722 | my $ec = $lrm_res->{exit_code}; |
723 | if ($ec == SUCCESS) { | |
724 | ||
46139211 | 725 | if (defined($sd->{failed_nodes})) { |
81449997 | 726 | $haenv->log('info', "relocation policy successful for '$sid' on node '$sd->{node}'," . |
46139211 TL |
727 | " failed nodes: " . join(', ', @{$sd->{failed_nodes}}) ); |
728 | } | |
729 | ||
730 | delete $sd->{failed_nodes}; | |
e9e1cd68 | 731 | |
b47920fd DM |
732 | # store flag to indicate successful start - only valid while state == 'started' |
733 | $sd->{running} = 1; | |
734 | ||
e9e1cd68 | 735 | } elsif ($ec == ERROR) { |
b47920fd DM |
736 | |
737 | delete $sd->{running}; | |
738 | ||
e9e1cd68 | 739 | # apply our relocate policy if we got ERROR from the LRM |
46139211 | 740 | $self->record_service_failed_on_node($sid, $sd->{node}); |
ea4443cc | 741 | |
46139211 | 742 | if (scalar(@{$sd->{failed_nodes}}) <= $cd->{max_relocate}) { |
ea4443cc | 743 | |
e9e1cd68 TL |
744 | # tell select_service_node to relocate if possible |
745 | $try_next = 1; | |
ea4443cc TL |
746 | |
747 | $haenv->log('warning', "starting service $sid on node". | |
748 | " '$sd->{node}' failed, relocating service."); | |
ea4443cc TL |
749 | |
750 | } else { | |
751 | ||
46139211 TL |
752 | $haenv->log('err', "recovery policy for service $sid " . |
753 | "failed, entering error state. Failed nodes: ". | |
754 | join(', ', @{$sd->{failed_nodes}})); | |
ea4443cc TL |
755 | &$change_service_state($self, $sid, 'error'); |
756 | return; | |
757 | ||
758 | } | |
e9e1cd68 | 759 | } else { |
46139211 TL |
760 | $self->record_service_failed_on_node($sid, $sd->{node}); |
761 | ||
e9e1cd68 TL |
762 | $haenv->log('err', "service '$sid' got unrecoverable error" . |
763 | " (exit code $ec))"); | |
764 | # we have no save way out (yet) for other errors | |
765 | &$change_service_state($self, $sid, 'error'); | |
35cbb764 | 766 | return; |
ea4443cc | 767 | } |
abc920b4 DM |
768 | } |
769 | ||
2167dd1e TL |
770 | my $node = select_service_node( |
771 | $self->{groups}, | |
772 | $self->{online_node_usage}, | |
b2598576 | 773 | $sid, |
2167dd1e TL |
774 | $cd, |
775 | $sd->{node}, | |
776 | $try_next, | |
777 | $sd->{failed_nodes}, | |
778 | $sd->{maintenance_node}, | |
779 | ); | |
abc920b4 | 780 | |
b0fdf86a | 781 | if ($node && ($sd->{node} ne $node)) { |
5d724d4d | 782 | $self->{online_node_usage}->add_service_usage_to_node($node, $sid, $sd->{node}); |
2167dd1e TL |
783 | |
784 | if (defined(my $fallback = $sd->{maintenance_node})) { | |
785 | if ($node eq $fallback) { | |
786 | $haenv->log('info', "moving service '$sid' back to '$fallback', node came back from maintenance."); | |
787 | delete $sd->{maintenance_node}; | |
788 | } elsif ($sd->{node} ne $fallback) { | |
789 | $haenv->log('info', "dropping maintenance fallback node '$fallback' for '$sid'"); | |
790 | delete $sd->{maintenance_node}; | |
791 | } | |
792 | } | |
793 | ||
c0255b2c TL |
794 | if ($cd->{type} eq 'vm') { |
795 | $haenv->log('info', "migrate service '$sid' to node '$node' (running)"); | |
796 | &$change_service_state($self, $sid, 'migrate', node => $sd->{node}, target => $node); | |
797 | } else { | |
798 | $haenv->log('info', "relocate service '$sid' to node '$node'"); | |
799 | &$change_service_state($self, $sid, 'relocate', node => $sd->{node}, target => $node); | |
800 | } | |
b0fdf86a | 801 | } else { |
e6eeb7dc TL |
802 | if ($try_next && !defined($node)) { |
803 | $haenv->log('warning', "Start Error Recovery: Tried all available " . | |
804 | " nodes for service '$sid', retry start on current node. " . | |
805 | "Tried nodes: " . join(', ', @{$sd->{failed_nodes}})); | |
806 | } | |
35cbb764 | 807 | # ensure service get started again if it went unexpected down |
bf2d8d74 TL |
808 | # but ensure also no LRM result gets lost |
809 | $sd->{uid} = compute_new_uuid($sd->{state}) if defined($lrm_res); | |
b0fdf86a | 810 | } |
a875fbe8 | 811 | } |
e88469ba DM |
812 | |
813 | return; | |
35cbb764 | 814 | } |
e88469ba DM |
815 | |
816 | $haenv->log('err', "service '$sid' - unknown state '$cd->{state}' in service configuration"); | |
a875fbe8 | 817 | } |
c0bbd038 | 818 | |
a2881965 TL |
819 | sub next_state_error { |
820 | my ($self, $sid, $cd, $sd, $lrm_res) = @_; | |
821 | ||
822 | my $ns = $self->{ns}; | |
46139211 | 823 | my $ms = $self->{ms}; |
a2881965 TL |
824 | |
825 | if ($cd->{state} eq 'disabled') { | |
46139211 TL |
826 | # clean up on error recovery |
827 | delete $sd->{failed_nodes}; | |
828 | ||
a2881965 TL |
829 | &$change_service_state($self, $sid, 'stopped'); |
830 | return; | |
831 | } | |
832 | ||
a2881965 TL |
833 | } |
834 | ||
c259b1a8 TL |
835 | # after a node was fenced this recovers the service to a new node |
836 | sub next_state_recovery { | |
837 | my ($self, $sid, $cd, $sd, $lrm_res) = @_; | |
838 | ||
839 | my ($haenv, $ss) = ($self->{haenv}, $self->{ss}); | |
840 | my $ns = $self->{ns}; | |
841 | my $ms = $self->{ms}; | |
842 | ||
843 | if ($sd->{state} ne 'recovery') { # should not happen | |
844 | $haenv->log('err', "cannot recover service '$sid' from fencing, wrong state '$sd->{state}'"); | |
845 | return; | |
846 | } | |
847 | ||
848 | my $fenced_node = $sd->{node}; # for logging purpose | |
849 | ||
850 | $self->recompute_online_node_usage(); # we want the most current node state | |
851 | ||
852 | my $recovery_node = select_service_node( | |
853 | $self->{groups}, | |
854 | $self->{online_node_usage}, | |
b2598576 | 855 | $sid, |
c259b1a8 TL |
856 | $cd, |
857 | $sd->{node}, | |
858 | ); | |
859 | ||
860 | if ($recovery_node) { | |
90a24755 TL |
861 | my $msg = "recover service '$sid' from fenced node '$fenced_node' to node '$recovery_node'"; |
862 | if ($recovery_node eq $fenced_node) { | |
863 | # can happen if restriced groups and the node came up again OK | |
864 | $msg = "recover service '$sid' to previous failed and fenced node '$fenced_node' again"; | |
865 | } | |
866 | $haenv->log('info', "$msg"); | |
c259b1a8 TL |
867 | |
868 | $fence_recovery_cleanup->($self, $sid, $fenced_node); | |
869 | ||
870 | $haenv->steal_service($sid, $sd->{node}, $recovery_node); | |
5d724d4d | 871 | $self->{online_node_usage}->add_service_usage_to_node($recovery_node, $sid, $recovery_node); |
c259b1a8 TL |
872 | |
873 | # NOTE: $sd *is normally read-only*, fencing is the exception | |
874 | $cd->{node} = $sd->{node} = $recovery_node; | |
875 | my $new_state = ($cd->{state} eq 'started') ? 'started' : 'request_stop'; | |
876 | $change_service_state->($self, $sid, $new_state, node => $recovery_node); | |
877 | } else { | |
878 | # no possible node found, cannot recover - but retry later, as we always try to make it available | |
879 | $haenv->log('err', "recovering service '$sid' from fenced node '$fenced_node' failed, no recovery node found"); | |
719883e9 TL |
880 | |
881 | if ($cd->{state} eq 'disabled') { | |
882 | # allow getting a service out of recovery manually if an admin disables it. | |
883 | delete $sd->{failed_nodes}; # clean up on recovery to stopped | |
884 | $change_service_state->($self, $sid, 'stopped'); # must NOT go through request_stop | |
885 | return; | |
886 | } | |
c259b1a8 TL |
887 | } |
888 | } | |
889 | ||
c0bbd038 | 890 | 1; |