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c0bbd038 DM |
1 | package PVE::HA::Manager; |
2 | ||
3 | use strict; | |
4 | use warnings; | |
09169180 | 5 | |
c4a221bc | 6 | use Digest::MD5 qw(md5_base64); |
c0bbd038 | 7 | |
c142ebc9 | 8 | use PVE::Tools; |
a89ff919 | 9 | use PVE::HA::Tools ':exit_codes'; |
c0bbd038 | 10 | use PVE::HA::NodeStatus; |
5d724d4d | 11 | use PVE::HA::Usage::Basic; |
561e7f4b | 12 | use PVE::HA::Usage::Static; |
c0bbd038 | 13 | |
a3ffb0b3 TL |
14 | ## Variable Name & Abbreviations Convention |
15 | # | |
16 | # The HA stack has some variables it uses frequently and thus abbreviates it such that it may be | |
17 | # confusing for new readers. Here's a short list of the most common used. | |
18 | # | |
19 | # NOTE: variables should be assumed to be read only if not otherwise stated, only use the specific | |
20 | # methods to re-compute/read/alter them. | |
21 | # | |
22 | # - $haenv -> HA environment, the main interface to the simulator/test/real world | |
23 | # - $sid -> Service ID, unique identifier for a service, `type:vmid` is common | |
24 | # | |
25 | # - $ms -> Master/Manager Status, contains runtime info from the current active manager | |
26 | # - $ns -> Node Status, hash holding online/offline status about all nodes | |
27 | # | |
28 | # - $ss -> Service Status, hash holding the current state (last LRM cmd result, failed starts | |
29 | # or migrates, maintenance fallback node, for *all* services ... | |
30 | # - $sd -> Service Data, the service status of a *single* service, iow. $ss->{$sid} | |
31 | # | |
32 | # - $sc -> Service Configuration, hash for all services including target state, group, ... | |
0869c306 | 33 | # - $cd -> Configuration Data, the service config of a *single* service, iow. $sc->{$sid} |
a3ffb0b3 TL |
34 | # |
35 | # Try to avoid adding new two letter (or similar over abbreviated) names, but also don't send | |
36 | # patches for changing above, as that set is mostly sensible and should be easy to remember once | |
37 | # spending a bit time in the HA code base. | |
38 | ||
c0bbd038 | 39 | sub new { |
8f0bb968 | 40 | my ($this, $haenv) = @_; |
c0bbd038 DM |
41 | |
42 | my $class = ref($this) || $this; | |
43 | ||
1b813831 | 44 | my $self = bless { haenv => $haenv, crs => {} }, $class; |
8f0bb968 | 45 | |
6ee64cfc | 46 | my $old_ms = $haenv->read_manager_status(); |
8f0bb968 | 47 | |
6ee64cfc TL |
48 | # we only copy the state part of the manager which cannot be auto generated |
49 | ||
50 | $self->{ns} = PVE::HA::NodeStatus->new($haenv, $old_ms->{node_status} || {}); | |
8f0bb968 | 51 | |
59fd7207 | 52 | # fixme: use separate class PVE::HA::ServiceStatus |
6ee64cfc TL |
53 | $self->{ss} = $old_ms->{service_status} || {}; |
54 | ||
55 | $self->{ms} = { master_node => $haenv->nodename() }; | |
c0bbd038 | 56 | |
086f7075 | 57 | $self->update_crs_scheduler_mode(); # initial set, we update it once every loop |
f74f8ffb | 58 | |
c0bbd038 DM |
59 | return $self; |
60 | } | |
61 | ||
cb06cd42 TL |
62 | sub update_crs_scheduler_mode { |
63 | my ($self) = @_; | |
64 | ||
65 | my $haenv = $self->{haenv}; | |
66 | my $dc_cfg = $haenv->get_datacenter_settings(); | |
67 | ||
314ef257 TL |
68 | $self->{crs}->{rebalance_on_request_start} = !!$dc_cfg->{crs}->{'ha-rebalance-on-start'}; |
69 | ||
1b813831 | 70 | my $old_mode = $self->{crs}->{scheduler}; |
cb06cd42 TL |
71 | my $new_mode = $dc_cfg->{crs}->{ha} || 'basic'; |
72 | ||
73 | if (!defined($old_mode)) { | |
74 | $haenv->log('info', "using scheduler mode '$new_mode'") if $new_mode ne 'basic'; | |
086f7075 TL |
75 | } elsif ($new_mode eq $old_mode) { |
76 | return; # nothing to do | |
77 | } else { | |
78 | $haenv->log('info', "switching scheduler mode from '$old_mode' to '$new_mode'"); | |
cb06cd42 TL |
79 | } |
80 | ||
1b813831 | 81 | $self->{crs}->{scheduler} = $new_mode; |
cb06cd42 TL |
82 | |
83 | return; | |
84 | } | |
85 | ||
d84da043 DM |
86 | sub cleanup { |
87 | my ($self) = @_; | |
88 | ||
89 | # todo: ? | |
90 | } | |
91 | ||
8f0bb968 | 92 | sub flush_master_status { |
c0bbd038 DM |
93 | my ($self) = @_; |
94 | ||
59fd7207 | 95 | my ($haenv, $ms, $ns, $ss) = ($self->{haenv}, $self->{ms}, $self->{ns}, $self->{ss}); |
c0bbd038 | 96 | |
8f0bb968 | 97 | $ms->{node_status} = $ns->{status}; |
59fd7207 | 98 | $ms->{service_status} = $ss; |
d2f612cf | 99 | $ms->{timestamp} = $haenv->get_time(); |
289e4784 | 100 | |
8f0bb968 | 101 | $haenv->write_manager_status($ms); |
289e4784 | 102 | } |
c0bbd038 | 103 | |
48a6ba2a TL |
104 | sub get_service_group { |
105 | my ($groups, $online_node_usage, $service_conf) = @_; | |
f7ccd1b3 | 106 | |
09c5c4bf TL |
107 | my $group = {}; |
108 | # add all online nodes to default group to allow try_next when no group set | |
5d724d4d | 109 | $group->{nodes}->{$_} = 1 for $online_node_usage->list_nodes(); |
abc920b4 | 110 | |
09c5c4bf | 111 | # overwrite default if service is bound to a specific group |
3458a0e3 TL |
112 | if (my $group_id = $service_conf->{group}) { |
113 | $group = $groups->{ids}->{$group_id} if $groups->{ids}->{$group_id}; | |
114 | } | |
abc920b4 | 115 | |
48a6ba2a TL |
116 | return $group; |
117 | } | |
118 | ||
119 | # groups available nodes with their priority as group index | |
120 | sub get_node_priority_groups { | |
121 | my ($group, $online_node_usage) = @_; | |
122 | ||
abc920b4 DM |
123 | my $pri_groups = {}; |
124 | my $group_members = {}; | |
e0a56314 | 125 | foreach my $entry (keys %{$group->{nodes}}) { |
abc920b4 DM |
126 | my ($node, $pri) = ($entry, 0); |
127 | if ($entry =~ m/^(\S+):(\d+)$/) { | |
128 | ($node, $pri) = ($1, $2); | |
129 | } | |
5d724d4d | 130 | next if !$online_node_usage->contains_node($node); # offline |
abc920b4 DM |
131 | $pri_groups->{$pri}->{$node} = 1; |
132 | $group_members->{$node} = $pri; | |
133 | } | |
f7ccd1b3 | 134 | |
abc920b4 DM |
135 | # add non-group members to unrestricted groups (priority -1) |
136 | if (!$group->{restricted}) { | |
137 | my $pri = -1; | |
5d724d4d | 138 | for my $node ($online_node_usage->list_nodes()) { |
abc920b4 DM |
139 | next if defined($group_members->{$node}); |
140 | $pri_groups->{$pri}->{$node} = 1; | |
141 | $group_members->{$node} = -1; | |
142 | } | |
143 | } | |
144 | ||
48a6ba2a TL |
145 | return ($pri_groups, $group_members); |
146 | } | |
147 | ||
148 | sub select_service_node { | |
2fdf40f2 | 149 | my ($groups, $online_node_usage, $sid, $service_conf, $current_node, $try_next, $tried_nodes, $maintenance_fallback, $best_scored) = @_; |
48a6ba2a TL |
150 | |
151 | my $group = get_service_group($groups, $online_node_usage, $service_conf); | |
152 | ||
153 | my ($pri_groups, $group_members) = get_node_priority_groups($group, $online_node_usage); | |
154 | ||
abc920b4 DM |
155 | my @pri_list = sort {$b <=> $a} keys %$pri_groups; |
156 | return undef if !scalar(@pri_list); | |
09c5c4bf TL |
157 | |
158 | # stay on current node if possible (avoids random migrations) | |
2fdf40f2 | 159 | if ((!$try_next && !$best_scored) && $group->{nofailback} && defined($group_members->{$current_node})) { |
abc920b4 DM |
160 | return $current_node; |
161 | } | |
162 | ||
163 | # select node from top priority node list | |
164 | ||
165 | my $top_pri = $pri_list[0]; | |
166 | ||
e6eeb7dc TL |
167 | # try to avoid nodes where the service failed already if we want to relocate |
168 | if ($try_next) { | |
169 | foreach my $node (@$tried_nodes) { | |
170 | delete $pri_groups->{$top_pri}->{$node}; | |
171 | } | |
172 | } | |
173 | ||
631ba60e FE |
174 | return $maintenance_fallback |
175 | if defined($maintenance_fallback) && $pri_groups->{$top_pri}->{$maintenance_fallback}; | |
176 | ||
2fdf40f2 | 177 | return $current_node if (!$try_next && !$best_scored) && $pri_groups->{$top_pri}->{$current_node}; |
c724ce1b | 178 | |
5d724d4d | 179 | my $scores = $online_node_usage->score_nodes_to_start_service($sid, $current_node); |
289e4784 | 180 | my @nodes = sort { |
5d724d4d | 181 | $scores->{$a} <=> $scores->{$b} || $a cmp $b |
c142ebc9 | 182 | } keys %{$pri_groups->{$top_pri}}; |
abc920b4 DM |
183 | |
184 | my $found; | |
185 | for (my $i = scalar(@nodes) - 1; $i >= 0; $i--) { | |
186 | my $node = $nodes[$i]; | |
187 | if ($node eq $current_node) { | |
188 | $found = $i; | |
abc920b4 DM |
189 | } |
190 | } | |
191 | ||
abc920b4 | 192 | if ($try_next) { |
2fdf40f2 | 193 | if (!$best_scored && defined($found) && ($found < (scalar(@nodes) - 1))) { |
abc920b4 DM |
194 | return $nodes[$found + 1]; |
195 | } else { | |
196 | return $nodes[0]; | |
197 | } | |
abc920b4 | 198 | } else { |
abc920b4 | 199 | return $nodes[0]; |
abc920b4 | 200 | } |
f7ccd1b3 DM |
201 | } |
202 | ||
c4a221bc DM |
203 | my $uid_counter = 0; |
204 | ||
d55aa611 DM |
205 | sub compute_new_uuid { |
206 | my ($state) = @_; | |
289e4784 | 207 | |
d55aa611 DM |
208 | $uid_counter++; |
209 | return md5_base64($state . $$ . time() . $uid_counter); | |
210 | } | |
211 | ||
618fbeda DM |
212 | my $valid_service_states = { |
213 | stopped => 1, | |
214 | request_stop => 1, | |
4931b586 | 215 | request_start => 1, |
314ef257 | 216 | request_start_balance => 1, |
618fbeda DM |
217 | started => 1, |
218 | fence => 1, | |
c259b1a8 | 219 | recovery => 1, |
618fbeda | 220 | migrate => 1, |
b0fdf86a | 221 | relocate => 1, |
9c7d068b | 222 | freeze => 1, |
618fbeda DM |
223 | error => 1, |
224 | }; | |
225 | ||
561e7f4b FE |
226 | # FIXME with 'static' mode and thousands of services, the overhead can be noticable and the fact |
227 | # that this function is called for each state change and upon recovery doesn't help. | |
270d4406 DM |
228 | sub recompute_online_node_usage { |
229 | my ($self) = @_; | |
230 | ||
561e7f4b | 231 | my $haenv = $self->{haenv}; |
270d4406 DM |
232 | |
233 | my $online_nodes = $self->{ns}->list_online_nodes(); | |
234 | ||
561e7f4b FE |
235 | my $online_node_usage; |
236 | ||
1b813831 | 237 | if (my $mode = $self->{crs}->{scheduler}) { |
561e7f4b FE |
238 | if ($mode eq 'static') { |
239 | $online_node_usage = eval { | |
240 | my $scheduler = PVE::HA::Usage::Static->new($haenv); | |
241 | $scheduler->add_node($_) for $online_nodes->@*; | |
242 | return $scheduler; | |
243 | }; | |
f2c72982 | 244 | $haenv->log('warning', "fallback to 'basic' scheduler mode, init for 'static' failed - $@") |
561e7f4b | 245 | if $@; |
c2d8b56a TL |
246 | } elsif ($mode eq 'basic') { |
247 | # handled below in the general fall-back case | |
248 | } else { | |
561e7f4b FE |
249 | $haenv->log('warning', "got unknown scheduler mode '$mode', using 'basic'"); |
250 | } | |
251 | } | |
252 | ||
c2d8b56a | 253 | # fallback to the basic algorithm in any case |
561e7f4b FE |
254 | if (!$online_node_usage) { |
255 | $online_node_usage = PVE::HA::Usage::Basic->new($haenv); | |
256 | $online_node_usage->add_node($_) for $online_nodes->@*; | |
257 | } | |
270d4406 | 258 | |
7fd7af67 | 259 | foreach my $sid (sort keys %{$self->{ss}}) { |
270d4406 DM |
260 | my $sd = $self->{ss}->{$sid}; |
261 | my $state = $sd->{state}; | |
6f818da1 | 262 | my $target = $sd->{target}; # optional |
5d724d4d | 263 | if ($online_node_usage->contains_node($sd->{node})) { |
c259b1a8 | 264 | if ( |
4931b586 TL |
265 | $state eq 'started' || $state eq 'request_stop' || $state eq 'fence' |
266 | || $state eq 'freeze' || $state eq 'error' || $state eq 'recovery' | |
c259b1a8 | 267 | ) { |
5d724d4d | 268 | $online_node_usage->add_service_usage_to_node($sd->{node}, $sid, $sd->{node}); |
314ef257 | 269 | } elsif ($state eq 'migrate' || $state eq 'relocate' || $state eq 'request_start_balance') { |
5d724d4d | 270 | my $source = $sd->{node}; |
5c2eef4b | 271 | # count it for both, source and target as load is put on both |
314ef257 TL |
272 | $online_node_usage->add_service_usage_to_node($source, $sid, $source, $target) |
273 | if $state ne 'request_start_balance'; | |
5d724d4d | 274 | $online_node_usage->add_service_usage_to_node($target, $sid, $source, $target); |
4931b586 | 275 | } elsif ($state eq 'stopped' || $state eq 'request_start') { |
270d4406 DM |
276 | # do nothing |
277 | } else { | |
feea3913 | 278 | die "should not be reached (sid = '$sid', state = '$state')"; |
270d4406 | 279 | } |
5d724d4d | 280 | } elsif (defined($target) && $online_node_usage->contains_node($target)) { |
066fd016 TL |
281 | if ($state eq 'migrate' || $state eq 'relocate') { |
282 | # to correctly track maintenance modi and also consider the target as used for the | |
283 | # case a node dies, as we cannot really know if the to-be-aborted incoming migration | |
284 | # has already cleaned up all used resources | |
5d724d4d | 285 | $online_node_usage->add_service_usage_to_node($target, $sid, $sd->{node}, $target); |
066fd016 | 286 | } |
270d4406 DM |
287 | } |
288 | } | |
289 | ||
290 | $self->{online_node_usage} = $online_node_usage; | |
291 | } | |
292 | ||
4e01bc86 DM |
293 | my $change_service_state = sub { |
294 | my ($self, $sid, $new_state, %params) = @_; | |
295 | ||
296 | my ($haenv, $ss) = ($self->{haenv}, $self->{ss}); | |
297 | ||
298 | my $sd = $ss->{$sid} || die "no such service '$sid"; | |
299 | ||
300 | my $old_state = $sd->{state}; | |
e4ffb299 | 301 | my $old_node = $sd->{node}; |
46139211 | 302 | my $old_failed_nodes = $sd->{failed_nodes}; |
2167dd1e | 303 | my $old_maintenance_node = $sd->{maintenance_node}; |
4e01bc86 DM |
304 | |
305 | die "no state change" if $old_state eq $new_state; # just to be sure | |
306 | ||
618fbeda DM |
307 | die "invalid CRM service state '$new_state'\n" if !$valid_service_states->{$new_state}; |
308 | ||
e4ffb299 DM |
309 | foreach my $k (keys %$sd) { delete $sd->{$k}; }; |
310 | ||
311 | $sd->{state} = $new_state; | |
312 | $sd->{node} = $old_node; | |
ea998b07 | 313 | $sd->{failed_nodes} = $old_failed_nodes if defined($old_failed_nodes); |
2167dd1e | 314 | $sd->{maintenance_node} = $old_maintenance_node if defined($old_maintenance_node); |
e4ffb299 DM |
315 | |
316 | my $text_state = ''; | |
ba623362 | 317 | foreach my $k (sort keys %params) { |
4e01bc86 | 318 | my $v = $params{$k}; |
e4ffb299 DM |
319 | $text_state .= ", " if $text_state; |
320 | $text_state .= "$k = $v"; | |
4e01bc86 DM |
321 | $sd->{$k} = $v; |
322 | } | |
270d4406 DM |
323 | |
324 | $self->recompute_online_node_usage(); | |
325 | ||
d55aa611 | 326 | $sd->{uid} = compute_new_uuid($new_state); |
4e01bc86 | 327 | |
24678a59 | 328 | $text_state = " ($text_state)" if $text_state; |
09169180 | 329 | $haenv->log('info', "service '$sid': state changed from '${old_state}' to '${new_state}'$text_state"); |
4e01bc86 DM |
330 | }; |
331 | ||
5dd3ed86 TL |
332 | # clean up a possible bad state from a recovered service to allow its start |
333 | my $fence_recovery_cleanup = sub { | |
334 | my ($self, $sid, $fenced_node) = @_; | |
335 | ||
336 | my $haenv = $self->{haenv}; | |
337 | ||
0087839a | 338 | my (undef, $type, $id) = $haenv->parse_sid($sid); |
5dd3ed86 TL |
339 | my $plugin = PVE::HA::Resources->lookup($type); |
340 | ||
341 | # should not happen | |
342 | die "unknown resource type '$type'" if !$plugin; | |
343 | ||
32ea51dd TL |
344 | # locks may block recovery, cleanup those which are safe to remove after fencing, |
345 | # i.e., after the original node was reset and thus all it's state | |
3458a0e3 TL |
346 | my $removable_locks = [ |
347 | 'backup', | |
348 | 'mounted', | |
349 | 'migrate', | |
350 | 'clone', | |
351 | 'rollback', | |
352 | 'snapshot', | |
353 | 'snapshot-delete', | |
354 | 'suspending', | |
355 | 'suspended', | |
356 | ]; | |
5dd3ed86 TL |
357 | if (my $removed_lock = $plugin->remove_locks($haenv, $id, $removable_locks, $fenced_node)) { |
358 | $haenv->log('warning', "removed leftover lock '$removed_lock' from recovered " . | |
359 | "service '$sid' to allow its start."); | |
360 | } | |
361 | }; | |
362 | ||
289e4784 | 363 | # read LRM status for all nodes |
c4a221bc | 364 | sub read_lrm_status { |
332170bd | 365 | my ($self) = @_; |
c4a221bc | 366 | |
9c7d068b | 367 | my $nodes = $self->{ns}->list_nodes(); |
c4a221bc DM |
368 | my $haenv = $self->{haenv}; |
369 | ||
9c7d068b DM |
370 | my $results = {}; |
371 | my $modes = {}; | |
332170bd | 372 | foreach my $node (@$nodes) { |
9c7d068b | 373 | my $lrm_status = $haenv->read_lrm_status($node); |
02ffd753 | 374 | $modes->{$node} = $lrm_status->{mode} || 'active'; |
9c7d068b DM |
375 | foreach my $uid (keys %{$lrm_status->{results}}) { |
376 | next if $results->{$uid}; # should not happen | |
377 | $results->{$uid} = $lrm_status->{results}->{$uid}; | |
c4a221bc DM |
378 | } |
379 | } | |
380 | ||
9c7d068b | 381 | return ($results, $modes); |
c4a221bc DM |
382 | } |
383 | ||
aa98a844 DM |
384 | # read new crm commands and save them into crm master status |
385 | sub update_crm_commands { | |
386 | my ($self) = @_; | |
387 | ||
388 | my ($haenv, $ms, $ns, $ss) = ($self->{haenv}, $self->{ms}, $self->{ns}, $self->{ss}); | |
389 | ||
390 | my $cmdlist = $haenv->read_crm_commands(); | |
bf7febe3 | 391 | |
aa98a844 DM |
392 | foreach my $cmd (split(/\n/, $cmdlist)) { |
393 | chomp $cmd; | |
394 | ||
b0fdf86a | 395 | if ($cmd =~ m/^(migrate|relocate)\s+(\S+)\s+(\S+)$/) { |
289e4784 | 396 | my ($task, $sid, $node) = ($1, $2, $3); |
aa98a844 DM |
397 | if (my $sd = $ss->{$sid}) { |
398 | if (!$ns->node_is_online($node)) { | |
399 | $haenv->log('err', "crm command error - node not online: $cmd"); | |
400 | } else { | |
401 | if ($node eq $sd->{node}) { | |
402 | $haenv->log('info', "ignore crm command - service already on target node: $cmd"); | |
289e4784 | 403 | } else { |
aa98a844 | 404 | $haenv->log('info', "got crm command: $cmd"); |
3d42b01b | 405 | $ss->{$sid}->{cmd} = [ $task, $node ]; |
aa98a844 DM |
406 | } |
407 | } | |
408 | } else { | |
409 | $haenv->log('err', "crm command error - no such service: $cmd"); | |
410 | } | |
411 | ||
21caf0db FE |
412 | } elsif ($cmd =~ m/^stop\s+(\S+)\s+(\S+)$/) { |
413 | my ($sid, $timeout) = ($1, $2); | |
414 | if (my $sd = $ss->{$sid}) { | |
415 | $haenv->log('info', "got crm command: $cmd"); | |
416 | $ss->{$sid}->{cmd} = [ 'stop', $timeout ]; | |
417 | } else { | |
418 | $haenv->log('err', "crm command error - no such service: $cmd"); | |
419 | } | |
989c4c49 TL |
420 | } elsif ($cmd =~ m/^enable-node-maintenance\s+(\S+)$/) { |
421 | my $node = $1; | |
422 | ||
423 | my $state = $ns->get_node_state($node); | |
424 | if ($state eq 'online') { | |
425 | $ms->{node_request}->{$node}->{maintenance} = 1; | |
426 | } elsif ($state eq 'maintenance') { | |
427 | $haenv->log('info', "ignoring crm command - node $node is already in maintenance state"); | |
428 | } else { | |
429 | $haenv->log('err', "crm command error - node not online: $cmd"); | |
430 | } | |
431 | } elsif ($cmd =~ m/^disable-node-maintenance\s+(\S+)$/) { | |
432 | my $node = $1; | |
433 | ||
434 | my $state = $ns->get_node_state($node); | |
435 | if ($state ne 'maintenance') { | |
436 | $haenv->log( | |
437 | 'warn', "clearing maintenance of node $node requested, but it's in state $state"); | |
438 | } | |
439 | delete $ms->{node_request}->{$node}->{maintenance}; # gets flushed out at the end of the CRM loop | |
aa98a844 DM |
440 | } else { |
441 | $haenv->log('err', "unable to parse crm command: $cmd"); | |
442 | } | |
443 | } | |
444 | ||
445 | } | |
446 | ||
8f0bb968 DM |
447 | sub manage { |
448 | my ($self) = @_; | |
c0bbd038 | 449 | |
59fd7207 | 450 | my ($haenv, $ms, $ns, $ss) = ($self->{haenv}, $self->{ms}, $self->{ns}, $self->{ss}); |
c0bbd038 | 451 | |
99278e06 TL |
452 | my ($node_info) = $haenv->get_node_info(); |
453 | my ($lrm_results, $lrm_modes) = $self->read_lrm_status(); | |
454 | ||
455 | $ns->update($node_info, $lrm_modes); | |
c79442f2 | 456 | |
99278e06 | 457 | if (!$ns->node_is_operational($haenv->nodename())) { |
e5986717 | 458 | $haenv->log('info', "master seems offline"); |
c79442f2 DM |
459 | return; |
460 | } | |
461 | ||
086f7075 TL |
462 | $self->update_crs_scheduler_mode(); |
463 | ||
f7ccd1b3 DM |
464 | my $sc = $haenv->read_service_config(); |
465 | ||
abc920b4 DM |
466 | $self->{groups} = $haenv->read_group_config(); # update |
467 | ||
f7ccd1b3 DM |
468 | # compute new service status |
469 | ||
470 | # add new service | |
cc32a8f3 | 471 | foreach my $sid (sort keys %$sc) { |
f7ccd1b3 | 472 | next if $ss->{$sid}; # already there |
77499288 | 473 | my $cd = $sc->{$sid}; |
667670b2 TL |
474 | next if $cd->{state} eq 'ignored'; |
475 | ||
77499288 | 476 | $haenv->log('info', "adding new service '$sid' on node '$cd->{node}'"); |
f7ccd1b3 | 477 | # assume we are running to avoid relocate running service at add |
c2f2b9c6 | 478 | my $state = ($cd->{state} eq 'started') ? 'request_start' : 'request_stop'; |
83a84eb0 TL |
479 | $ss->{$sid} = { |
480 | state => $state, node => $cd->{node}, uid => compute_new_uuid('started'), | |
481 | }; | |
f7ccd1b3 DM |
482 | } |
483 | ||
667670b2 | 484 | # remove stale or ignored services from manager state |
4e5764af | 485 | foreach my $sid (keys %$ss) { |
667670b2 TL |
486 | next if $sc->{$sid} && $sc->{$sid}->{state} ne 'ignored'; |
487 | ||
488 | my $reason = defined($sc->{$sid}) ? 'ignored state requested' : 'no config'; | |
489 | $haenv->log('info', "removing stale service '$sid' ($reason)"); | |
490 | ||
46139211 | 491 | # remove all service related state information |
4e5764af DM |
492 | delete $ss->{$sid}; |
493 | } | |
5a28da91 | 494 | |
aa98a844 DM |
495 | $self->update_crm_commands(); |
496 | ||
c79442f2 DM |
497 | for (;;) { |
498 | my $repeat = 0; | |
289e4784 | 499 | |
270d4406 | 500 | $self->recompute_online_node_usage(); |
f7ccd1b3 | 501 | |
a5e4bef4 | 502 | foreach my $sid (sort keys %$ss) { |
c79442f2 DM |
503 | my $sd = $ss->{$sid}; |
504 | my $cd = $sc->{$sid} || { state => 'disabled' }; | |
f7ccd1b3 | 505 | |
9c7d068b | 506 | my $lrm_res = $sd->{uid} ? $lrm_results->{$sd->{uid}} : undef; |
a875fbe8 | 507 | |
c79442f2 DM |
508 | my $last_state = $sd->{state}; |
509 | ||
510 | if ($last_state eq 'stopped') { | |
511 | ||
abc920b4 | 512 | $self->next_state_stopped($sid, $cd, $sd, $lrm_res); |
f7ccd1b3 | 513 | |
c79442f2 | 514 | } elsif ($last_state eq 'started') { |
f7ccd1b3 | 515 | |
abc920b4 | 516 | $self->next_state_started($sid, $cd, $sd, $lrm_res); |
f7ccd1b3 | 517 | |
4931b586 TL |
518 | } elsif ($last_state eq 'request_start') { |
519 | ||
520 | $self->next_state_request_start($sid, $cd, $sd, $lrm_res); | |
521 | ||
314ef257 | 522 | } elsif ($last_state eq 'migrate' || $last_state eq 'relocate' || $last_state eq 'request_start_balance') { |
f7ccd1b3 | 523 | |
8aaa0e36 | 524 | $self->next_state_migrate_relocate($sid, $cd, $sd, $lrm_res); |
f7ccd1b3 | 525 | |
c79442f2 | 526 | } elsif ($last_state eq 'fence') { |
f7ccd1b3 | 527 | |
21e37ed4 | 528 | # do nothing here - wait until fenced |
f7ccd1b3 | 529 | |
c259b1a8 TL |
530 | } elsif ($last_state eq 'recovery') { |
531 | ||
532 | $self->next_state_recovery($sid, $cd, $sd, $lrm_res); | |
533 | ||
c79442f2 | 534 | } elsif ($last_state eq 'request_stop') { |
f7ccd1b3 | 535 | |
0df5b3dd | 536 | $self->next_state_request_stop($sid, $cd, $sd, $lrm_res); |
618fbeda | 537 | |
9c7d068b DM |
538 | } elsif ($last_state eq 'freeze') { |
539 | ||
540 | my $lrm_mode = $sd->{node} ? $lrm_modes->{$sd->{node}} : undef; | |
83a84eb0 TL |
541 | if ($lrm_mode && $lrm_mode eq 'active') { # unfreeze if active again |
542 | my $state = ($cd->{state} eq 'started') ? 'started' : 'request_stop'; | |
543 | $change_service_state->($self, $sid, $state); | |
544 | } | |
9c7d068b | 545 | |
e88469ba DM |
546 | } elsif ($last_state eq 'error') { |
547 | ||
a2881965 | 548 | $self->next_state_error($sid, $cd, $sd, $lrm_res); |
e88469ba | 549 | |
a875fbe8 DM |
550 | } else { |
551 | ||
552 | die "unknown service state '$last_state'"; | |
618fbeda | 553 | } |
21e37ed4 | 554 | |
9c7d068b | 555 | my $lrm_mode = $sd->{node} ? $lrm_modes->{$sd->{node}} : undef; |
07adc6a6 | 556 | if ($lrm_mode && $lrm_mode eq 'restart') { |
83a84eb0 TL |
557 | my $state = $sd->{state}; |
558 | if ($state eq 'started' || $state eq 'stopped'|| $state eq 'request_stop') { | |
559 | $change_service_state->($self, $sid, 'freeze'); | |
07adc6a6 | 560 | } |
9c7d068b | 561 | } |
07adc6a6 | 562 | |
c79442f2 | 563 | $repeat = 1 if $sd->{state} ne $last_state; |
f7ccd1b3 DM |
564 | } |
565 | ||
21e37ed4 DM |
566 | # handle fencing |
567 | my $fenced_nodes = {}; | |
9b2dbc2a | 568 | foreach my $sid (sort keys %$ss) { |
2deff1ae TL |
569 | my ($service_state, $service_node) = $ss->{$sid}->@{'state', 'node'}; |
570 | next if $service_state ne 'fence'; | |
0dcb6597 TL |
571 | |
572 | if (!defined($fenced_nodes->{$service_node})) { | |
2deff1ae | 573 | $fenced_nodes->{$service_node} = $ns->fence_node($service_node) || 0; |
21e37ed4 DM |
574 | } |
575 | ||
0dcb6597 | 576 | next if !$fenced_nodes->{$service_node}; |
21e37ed4 | 577 | |
9da84a0d | 578 | # node fence was successful - recover service |
c259b1a8 | 579 | $change_service_state->($self, $sid, 'recovery'); |
0dcb6597 | 580 | $repeat = 1; # for faster recovery execution |
21e37ed4 DM |
581 | } |
582 | ||
2deff1ae TL |
583 | # Avoid that a node without services in 'fence' state (e.g., removed |
584 | # manually by admin) is stuck with the 'fence' node state. | |
585 | for my $node (sort grep { !defined($fenced_nodes->{$_}) } keys $ns->{status}->%*) { | |
7dc92703 | 586 | next if $ns->get_node_state($node) ne 'fence'; |
7dc92703 | 587 | |
2deff1ae TL |
588 | $haenv->log('notice', "node '$node' in fence state but no services to-fence! admin interference?!"); |
589 | $repeat = 1 if $ns->fence_node($node); | |
7dc92703 FE |
590 | } |
591 | ||
c79442f2 | 592 | last if !$repeat; |
f7ccd1b3 | 593 | } |
f7ccd1b3 | 594 | |
8f0bb968 | 595 | $self->flush_master_status(); |
c0bbd038 DM |
596 | } |
597 | ||
a875fbe8 DM |
598 | # functions to compute next service states |
599 | # $cd: service configuration data (read only) | |
600 | # $sd: service status data (read only) | |
601 | # | |
602 | # Note: use change_service_state() to alter state | |
603 | # | |
604 | ||
0df5b3dd DM |
605 | sub next_state_request_stop { |
606 | my ($self, $sid, $cd, $sd, $lrm_res) = @_; | |
607 | ||
608 | my $haenv = $self->{haenv}; | |
609 | my $ns = $self->{ns}; | |
610 | ||
611 | # check result from LRM daemon | |
612 | if ($lrm_res) { | |
613 | my $exit_code = $lrm_res->{exit_code}; | |
a89ff919 | 614 | if ($exit_code == SUCCESS) { |
0df5b3dd DM |
615 | &$change_service_state($self, $sid, 'stopped'); |
616 | return; | |
617 | } else { | |
33f01524 | 618 | $haenv->log('err', "service '$sid' stop failed (exit code $exit_code)"); |
0df5b3dd DM |
619 | &$change_service_state($self, $sid, 'error'); # fixme: what state? |
620 | return; | |
621 | } | |
622 | } | |
623 | ||
ce3d7003 | 624 | if ($ns->node_is_offline_delayed($sd->{node})) { |
0df5b3dd DM |
625 | &$change_service_state($self, $sid, 'fence'); |
626 | return; | |
627 | } | |
628 | } | |
629 | ||
8aaa0e36 DM |
630 | sub next_state_migrate_relocate { |
631 | my ($self, $sid, $cd, $sd, $lrm_res) = @_; | |
632 | ||
633 | my $haenv = $self->{haenv}; | |
634 | my $ns = $self->{ns}; | |
635 | ||
636 | # check result from LRM daemon | |
637 | if ($lrm_res) { | |
638 | my $exit_code = $lrm_res->{exit_code}; | |
bb07bd2c | 639 | my $req_state = $cd->{state} eq 'started' ? 'started' : 'request_stop'; |
a89ff919 | 640 | if ($exit_code == SUCCESS) { |
542a9902 | 641 | &$change_service_state($self, $sid, $req_state, node => $sd->{target}); |
8aaa0e36 | 642 | return; |
660596ce TL |
643 | } elsif ($exit_code == EWRONG_NODE) { |
644 | $haenv->log('err', "service '$sid' - migration failed: service" . | |
645 | " registered on wrong node!"); | |
646 | &$change_service_state($self, $sid, 'error'); | |
8aaa0e36 DM |
647 | } else { |
648 | $haenv->log('err', "service '$sid' - migration failed (exit code $exit_code)"); | |
542a9902 | 649 | &$change_service_state($self, $sid, $req_state, node => $sd->{node}); |
8aaa0e36 DM |
650 | return; |
651 | } | |
652 | } | |
653 | ||
ce3d7003 | 654 | if ($ns->node_is_offline_delayed($sd->{node})) { |
8aaa0e36 DM |
655 | &$change_service_state($self, $sid, 'fence'); |
656 | return; | |
657 | } | |
658 | } | |
659 | ||
a875fbe8 | 660 | sub next_state_stopped { |
abc920b4 | 661 | my ($self, $sid, $cd, $sd, $lrm_res) = @_; |
a875fbe8 DM |
662 | |
663 | my $haenv = $self->{haenv}; | |
e88469ba | 664 | my $ns = $self->{ns}; |
a875fbe8 | 665 | |
ff6f1c5c DM |
666 | if ($sd->{node} ne $cd->{node}) { |
667 | # this can happen if we fence a node with active migrations | |
668 | # hack: modify $sd (normally this should be considered read-only) | |
24678a59 | 669 | $haenv->log('info', "fixup service '$sid' location ($sd->{node} => $cd->{node})"); |
289e4784 | 670 | $sd->{node} = $cd->{node}; |
ff6f1c5c DM |
671 | } |
672 | ||
94b7ebe2 | 673 | if ($sd->{cmd}) { |
21caf0db | 674 | my $cmd = shift @{$sd->{cmd}}; |
94b7ebe2 | 675 | |
b0fdf86a | 676 | if ($cmd eq 'migrate' || $cmd eq 'relocate') { |
21caf0db | 677 | my $target = shift @{$sd->{cmd}}; |
94b7ebe2 | 678 | if (!$ns->node_is_online($target)) { |
b0fdf86a | 679 | $haenv->log('err', "ignore service '$sid' $cmd request - node '$target' not online"); |
e88469ba | 680 | } elsif ($sd->{node} eq $target) { |
b0fdf86a | 681 | $haenv->log('info', "ignore service '$sid' $cmd request - service already on node '$target'"); |
94b7ebe2 | 682 | } else { |
4931b586 | 683 | &$change_service_state($self, $sid, $cmd, node => $sd->{node}, target => $target); |
9da84a0d | 684 | return; |
94b7ebe2 | 685 | } |
21caf0db FE |
686 | } elsif ($cmd eq 'stop') { |
687 | $haenv->log('info', "ignore service '$sid' $cmd request - service already stopped"); | |
94b7ebe2 | 688 | } else { |
289e4784 | 689 | $haenv->log('err', "unknown command '$cmd' for service '$sid'"); |
94b7ebe2 | 690 | } |
21caf0db | 691 | delete $sd->{cmd}; |
35cbb764 | 692 | } |
94b7ebe2 | 693 | |
a875fbe8 | 694 | if ($cd->{state} eq 'disabled') { |
35cbb764 TL |
695 | # NOTE: do nothing here, the stop state is an exception as we do not |
696 | # process the LRM result here, thus the LRM always tries to stop the | |
697 | # service (protection for the case no CRM is active) | |
e88469ba | 698 | return; |
35cbb764 | 699 | } |
e88469ba | 700 | |
84c945e4 | 701 | if ($ns->node_is_offline_delayed($sd->{node}) && $ns->get_node_state($sd->{node}) ne 'maintenance') { |
af14d5f3 TL |
702 | &$change_service_state($self, $sid, 'fence'); |
703 | return; | |
704 | } | |
705 | ||
706 | if ($cd->{state} eq 'stopped') { | |
707 | # almost the same as 'disabled' state but the service will also get recovered | |
708 | return; | |
709 | } | |
710 | ||
bb07bd2c | 711 | if ($cd->{state} eq 'started') { |
4931b586 TL |
712 | # simply mark it started, if it's on the wrong node next_state_started will fix that for us |
713 | $change_service_state->($self, $sid, 'request_start', node => $sd->{node}); | |
e88469ba | 714 | return; |
a875fbe8 | 715 | } |
e88469ba DM |
716 | |
717 | $haenv->log('err', "service '$sid' - unknown state '$cd->{state}' in service configuration"); | |
a875fbe8 DM |
718 | } |
719 | ||
4931b586 TL |
720 | sub next_state_request_start { |
721 | my ($self, $sid, $cd, $sd, $lrm_res) = @_; | |
722 | ||
314ef257 TL |
723 | my $haenv = $self->{haenv}; |
724 | my $current_node = $sd->{node}; | |
725 | ||
726 | if ($self->{crs}->{rebalance_on_request_start}) { | |
727 | my $selected_node = select_service_node( | |
728 | $self->{groups}, | |
729 | $self->{online_node_usage}, | |
730 | $sid, | |
731 | $cd, | |
732 | $sd->{node}, | |
733 | 0, # try_next | |
734 | $sd->{failed_nodes}, | |
735 | $sd->{maintenance_node}, | |
736 | 1, # best_score | |
737 | ); | |
738 | my $select_text = $selected_node ne $current_node ? 'new' : 'current'; | |
739 | $haenv->log('info', "service $sid: re-balance selected $select_text node $selected_node for startup"); | |
740 | ||
741 | if ($selected_node ne $current_node) { | |
742 | $change_service_state->($self, $sid, 'request_start_balance', node => $current_node, target => $selected_node); | |
743 | return; | |
744 | } | |
745 | } | |
746 | ||
747 | $change_service_state->($self, $sid, 'started', node => $current_node); | |
4931b586 TL |
748 | } |
749 | ||
46139211 | 750 | sub record_service_failed_on_node { |
57fe8e87 | 751 | my ($self, $sid, $node) = @_; |
46139211 | 752 | |
57fe8e87 DM |
753 | if (!defined($self->{ss}->{$sid}->{failed_nodes})) { |
754 | $self->{ss}->{$sid}->{failed_nodes} = []; | |
755 | } | |
46139211 | 756 | |
57fe8e87 | 757 | push @{$self->{ss}->{$sid}->{failed_nodes}}, $node; |
46139211 TL |
758 | } |
759 | ||
a875fbe8 | 760 | sub next_state_started { |
abc920b4 | 761 | my ($self, $sid, $cd, $sd, $lrm_res) = @_; |
a875fbe8 DM |
762 | |
763 | my $haenv = $self->{haenv}; | |
ea4443cc | 764 | my $master_status = $self->{ms}; |
a875fbe8 DM |
765 | my $ns = $self->{ns}; |
766 | ||
767 | if (!$ns->node_is_online($sd->{node})) { | |
b0e9158d | 768 | if ($ns->node_is_offline_delayed($sd->{node})) { |
5385a606 DM |
769 | &$change_service_state($self, $sid, 'fence'); |
770 | } | |
99278e06 TL |
771 | if ($ns->get_node_state($sd->{node}) ne 'maintenance') { |
772 | return; | |
2167dd1e | 773 | } else { |
09169180 | 774 | # save current node as fallback for when it comes out of maintenance |
2167dd1e | 775 | $sd->{maintenance_node} = $sd->{node}; |
99278e06 | 776 | } |
e88469ba | 777 | } |
289e4784 | 778 | |
af14d5f3 | 779 | if ($cd->{state} eq 'disabled' || $cd->{state} eq 'stopped') { |
e88469ba DM |
780 | &$change_service_state($self, $sid, 'request_stop'); |
781 | return; | |
782 | } | |
783 | ||
bb07bd2c | 784 | if ($cd->{state} eq 'started') { |
e88469ba DM |
785 | |
786 | if ($sd->{cmd}) { | |
21caf0db | 787 | my $cmd = shift @{$sd->{cmd}}; |
e88469ba | 788 | |
b0fdf86a | 789 | if ($cmd eq 'migrate' || $cmd eq 'relocate') { |
21caf0db | 790 | my $target = shift @{$sd->{cmd}}; |
e88469ba | 791 | if (!$ns->node_is_online($target)) { |
b0fdf86a | 792 | $haenv->log('err', "ignore service '$sid' $cmd request - node '$target' not online"); |
e88469ba | 793 | } elsif ($sd->{node} eq $target) { |
b0fdf86a | 794 | $haenv->log('info', "ignore service '$sid' $cmd request - service already on node '$target'"); |
e88469ba | 795 | } else { |
a3cb8dcb | 796 | $haenv->log('info', "$cmd service '$sid' to node '$target'"); |
b0fdf86a | 797 | &$change_service_state($self, $sid, $cmd, node => $sd->{node}, target => $target); |
e88469ba | 798 | } |
21caf0db FE |
799 | } elsif ($cmd eq 'stop') { |
800 | my $timeout = shift @{$sd->{cmd}}; | |
396eb6f0 TL |
801 | if ($timeout == 0) { |
802 | $haenv->log('info', "request immediate service hard-stop for service '$sid'"); | |
803 | } else { | |
804 | $haenv->log('info', "request graceful stop with timeout '$timeout' for service '$sid'"); | |
805 | } | |
21caf0db FE |
806 | &$change_service_state($self, $sid, 'request_stop', timeout => $timeout); |
807 | $haenv->update_service_config($sid, {'state' => 'stopped'}); | |
a875fbe8 | 808 | } else { |
289e4784 | 809 | $haenv->log('err', "unknown command '$cmd' for service '$sid'"); |
a875fbe8 | 810 | } |
21caf0db FE |
811 | |
812 | delete $sd->{cmd}; | |
813 | ||
a875fbe8 | 814 | } else { |
b0fdf86a | 815 | |
abc920b4 | 816 | my $try_next = 0; |
46139211 | 817 | |
ea4443cc | 818 | if ($lrm_res) { |
46139211 | 819 | |
e9e1cd68 TL |
820 | my $ec = $lrm_res->{exit_code}; |
821 | if ($ec == SUCCESS) { | |
822 | ||
46139211 | 823 | if (defined($sd->{failed_nodes})) { |
81449997 | 824 | $haenv->log('info', "relocation policy successful for '$sid' on node '$sd->{node}'," . |
46139211 TL |
825 | " failed nodes: " . join(', ', @{$sd->{failed_nodes}}) ); |
826 | } | |
827 | ||
828 | delete $sd->{failed_nodes}; | |
e9e1cd68 | 829 | |
b47920fd DM |
830 | # store flag to indicate successful start - only valid while state == 'started' |
831 | $sd->{running} = 1; | |
832 | ||
b159176a | 833 | } elsif ($ec == ERROR || $ec == EWRONG_NODE) { |
b47920fd DM |
834 | |
835 | delete $sd->{running}; | |
836 | ||
e9e1cd68 | 837 | # apply our relocate policy if we got ERROR from the LRM |
46139211 | 838 | $self->record_service_failed_on_node($sid, $sd->{node}); |
ea4443cc | 839 | |
46139211 | 840 | if (scalar(@{$sd->{failed_nodes}}) <= $cd->{max_relocate}) { |
ea4443cc | 841 | |
e9e1cd68 TL |
842 | # tell select_service_node to relocate if possible |
843 | $try_next = 1; | |
ea4443cc TL |
844 | |
845 | $haenv->log('warning', "starting service $sid on node". | |
846 | " '$sd->{node}' failed, relocating service."); | |
ea4443cc TL |
847 | |
848 | } else { | |
849 | ||
46139211 TL |
850 | $haenv->log('err', "recovery policy for service $sid " . |
851 | "failed, entering error state. Failed nodes: ". | |
852 | join(', ', @{$sd->{failed_nodes}})); | |
ea4443cc TL |
853 | &$change_service_state($self, $sid, 'error'); |
854 | return; | |
855 | ||
856 | } | |
e9e1cd68 | 857 | } else { |
46139211 TL |
858 | $self->record_service_failed_on_node($sid, $sd->{node}); |
859 | ||
09169180 | 860 | $haenv->log('err', "service '$sid' got unrecoverable error (exit code $ec))"); |
e9e1cd68 TL |
861 | # we have no save way out (yet) for other errors |
862 | &$change_service_state($self, $sid, 'error'); | |
35cbb764 | 863 | return; |
ea4443cc | 864 | } |
abc920b4 DM |
865 | } |
866 | ||
2167dd1e TL |
867 | my $node = select_service_node( |
868 | $self->{groups}, | |
869 | $self->{online_node_usage}, | |
b2598576 | 870 | $sid, |
2167dd1e TL |
871 | $cd, |
872 | $sd->{node}, | |
873 | $try_next, | |
874 | $sd->{failed_nodes}, | |
875 | $sd->{maintenance_node}, | |
876 | ); | |
abc920b4 | 877 | |
b0fdf86a | 878 | if ($node && ($sd->{node} ne $node)) { |
5d724d4d | 879 | $self->{online_node_usage}->add_service_usage_to_node($node, $sid, $sd->{node}); |
2167dd1e TL |
880 | |
881 | if (defined(my $fallback = $sd->{maintenance_node})) { | |
882 | if ($node eq $fallback) { | |
09169180 TL |
883 | $haenv->log( |
884 | 'info', | |
885 | "moving service '$sid' back to '$fallback', node came back from maintenance.", | |
886 | ); | |
2167dd1e TL |
887 | delete $sd->{maintenance_node}; |
888 | } elsif ($sd->{node} ne $fallback) { | |
889 | $haenv->log('info', "dropping maintenance fallback node '$fallback' for '$sid'"); | |
890 | delete $sd->{maintenance_node}; | |
891 | } | |
892 | } | |
893 | ||
c0255b2c TL |
894 | if ($cd->{type} eq 'vm') { |
895 | $haenv->log('info', "migrate service '$sid' to node '$node' (running)"); | |
896 | &$change_service_state($self, $sid, 'migrate', node => $sd->{node}, target => $node); | |
897 | } else { | |
898 | $haenv->log('info', "relocate service '$sid' to node '$node'"); | |
899 | &$change_service_state($self, $sid, 'relocate', node => $sd->{node}, target => $node); | |
900 | } | |
b0fdf86a | 901 | } else { |
e6eeb7dc | 902 | if ($try_next && !defined($node)) { |
09169180 TL |
903 | $haenv->log( |
904 | 'warning', | |
905 | "Start Error Recovery: Tried all available nodes for service '$sid', retry" | |
906 | ." start on current node. Tried nodes: " . join(', ', @{$sd->{failed_nodes}}, | |
907 | ) | |
908 | ); | |
e6eeb7dc | 909 | } |
35cbb764 | 910 | # ensure service get started again if it went unexpected down |
bf2d8d74 TL |
911 | # but ensure also no LRM result gets lost |
912 | $sd->{uid} = compute_new_uuid($sd->{state}) if defined($lrm_res); | |
b0fdf86a | 913 | } |
a875fbe8 | 914 | } |
e88469ba DM |
915 | |
916 | return; | |
35cbb764 | 917 | } |
e88469ba DM |
918 | |
919 | $haenv->log('err', "service '$sid' - unknown state '$cd->{state}' in service configuration"); | |
a875fbe8 | 920 | } |
c0bbd038 | 921 | |
a2881965 TL |
922 | sub next_state_error { |
923 | my ($self, $sid, $cd, $sd, $lrm_res) = @_; | |
924 | ||
925 | my $ns = $self->{ns}; | |
46139211 | 926 | my $ms = $self->{ms}; |
a2881965 TL |
927 | |
928 | if ($cd->{state} eq 'disabled') { | |
46139211 TL |
929 | # clean up on error recovery |
930 | delete $sd->{failed_nodes}; | |
931 | ||
a2881965 TL |
932 | &$change_service_state($self, $sid, 'stopped'); |
933 | return; | |
934 | } | |
935 | ||
a2881965 TL |
936 | } |
937 | ||
c259b1a8 TL |
938 | # after a node was fenced this recovers the service to a new node |
939 | sub next_state_recovery { | |
940 | my ($self, $sid, $cd, $sd, $lrm_res) = @_; | |
941 | ||
942 | my ($haenv, $ss) = ($self->{haenv}, $self->{ss}); | |
943 | my $ns = $self->{ns}; | |
944 | my $ms = $self->{ms}; | |
945 | ||
946 | if ($sd->{state} ne 'recovery') { # should not happen | |
947 | $haenv->log('err', "cannot recover service '$sid' from fencing, wrong state '$sd->{state}'"); | |
948 | return; | |
949 | } | |
950 | ||
951 | my $fenced_node = $sd->{node}; # for logging purpose | |
952 | ||
953 | $self->recompute_online_node_usage(); # we want the most current node state | |
954 | ||
955 | my $recovery_node = select_service_node( | |
956 | $self->{groups}, | |
957 | $self->{online_node_usage}, | |
b2598576 | 958 | $sid, |
c259b1a8 TL |
959 | $cd, |
960 | $sd->{node}, | |
961 | ); | |
962 | ||
963 | if ($recovery_node) { | |
90a24755 TL |
964 | my $msg = "recover service '$sid' from fenced node '$fenced_node' to node '$recovery_node'"; |
965 | if ($recovery_node eq $fenced_node) { | |
966 | # can happen if restriced groups and the node came up again OK | |
967 | $msg = "recover service '$sid' to previous failed and fenced node '$fenced_node' again"; | |
968 | } | |
969 | $haenv->log('info', "$msg"); | |
c259b1a8 TL |
970 | |
971 | $fence_recovery_cleanup->($self, $sid, $fenced_node); | |
972 | ||
973 | $haenv->steal_service($sid, $sd->{node}, $recovery_node); | |
5d724d4d | 974 | $self->{online_node_usage}->add_service_usage_to_node($recovery_node, $sid, $recovery_node); |
c259b1a8 TL |
975 | |
976 | # NOTE: $sd *is normally read-only*, fencing is the exception | |
977 | $cd->{node} = $sd->{node} = $recovery_node; | |
978 | my $new_state = ($cd->{state} eq 'started') ? 'started' : 'request_stop'; | |
979 | $change_service_state->($self, $sid, $new_state, node => $recovery_node); | |
980 | } else { | |
981 | # no possible node found, cannot recover - but retry later, as we always try to make it available | |
982 | $haenv->log('err', "recovering service '$sid' from fenced node '$fenced_node' failed, no recovery node found"); | |
719883e9 TL |
983 | |
984 | if ($cd->{state} eq 'disabled') { | |
985 | # allow getting a service out of recovery manually if an admin disables it. | |
986 | delete $sd->{failed_nodes}; # clean up on recovery to stopped | |
987 | $change_service_state->($self, $sid, 'stopped'); # must NOT go through request_stop | |
988 | return; | |
989 | } | |
c259b1a8 TL |
990 | } |
991 | } | |
992 | ||
c0bbd038 | 993 | 1; |