1 package PVE
::HA
::Manager
;
5 use Digest
::MD5
qw(md5_base64);
8 use PVE
::HA
::Tools
':exit_codes';
9 use PVE
::HA
::NodeStatus
;
10 use PVE
::HA
::Usage
::Basic
;
11 use PVE
::HA
::Usage
::Static
;
13 ## Variable Name & Abbreviations Convention
15 # The HA stack has some variables it uses frequently and thus abbreviates it such that it may be
16 # confusing for new readers. Here's a short list of the most common used.
18 # NOTE: variables should be assumed to be read only if not otherwise stated, only use the specific
19 # methods to re-compute/read/alter them.
21 # - $haenv -> HA environment, the main interface to the simulator/test/real world
22 # - $sid -> Service ID, unique identifier for a service, `type:vmid` is common
24 # - $ms -> Master/Manager Status, contains runtime info from the current active manager
25 # - $ns -> Node Status, hash holding online/offline status about all nodes
27 # - $ss -> Service Status, hash holding the current state (last LRM cmd result, failed starts
28 # or migrates, maintenance fallback node, for *all* services ...
29 # - $sd -> Service Data, the service status of a *single* service, iow. $ss->{$sid}
31 # - $sc -> Service Configuration, hash for all services including target state, group, ...
32 # - $cd -> Configuration Data, the service config of a *single* service, iow. $sc->{$sid}
34 # Try to avoid adding new two letter (or similar over abbreviated) names, but also don't send
35 # patches for changing above, as that set is mostly sensible and should be easy to remember once
36 # spending a bit time in the HA code base.
39 my ($this, $haenv) = @_;
41 my $class = ref($this) || $this;
43 my $self = bless { haenv
=> $haenv, crs
=> {} }, $class;
45 my $old_ms = $haenv->read_manager_status();
47 # we only copy the state part of the manager which cannot be auto generated
49 $self->{ns
} = PVE
::HA
::NodeStatus-
>new($haenv, $old_ms->{node_status
} || {});
51 # fixme: use separate class PVE::HA::ServiceStatus
52 $self->{ss
} = $old_ms->{service_status
} || {};
54 $self->{ms
} = { master_node
=> $haenv->nodename() };
56 $self->update_crs_scheduler_mode(); # initial set, we update it once every loop
61 sub update_crs_scheduler_mode
{
64 my $haenv = $self->{haenv
};
65 my $dc_cfg = $haenv->get_datacenter_settings();
67 my $old_mode = $self->{crs
}->{scheduler
};
68 my $new_mode = $dc_cfg->{crs
}->{ha
} || 'basic';
70 if (!defined($old_mode)) {
71 $haenv->log('info', "using scheduler mode '$new_mode'") if $new_mode ne 'basic';
72 } elsif ($new_mode eq $old_mode) {
73 return; # nothing to do
75 $haenv->log('info', "switching scheduler mode from '$old_mode' to '$new_mode'");
78 $self->{crs
}->{scheduler
} = $new_mode;
89 sub flush_master_status
{
92 my ($haenv, $ms, $ns, $ss) = ($self->{haenv
}, $self->{ms
}, $self->{ns
}, $self->{ss
});
94 $ms->{node_status
} = $ns->{status
};
95 $ms->{service_status
} = $ss;
96 $ms->{timestamp
} = $haenv->get_time();
98 $haenv->write_manager_status($ms);
101 sub get_service_group
{
102 my ($groups, $online_node_usage, $service_conf) = @_;
105 # add all online nodes to default group to allow try_next when no group set
106 $group->{nodes
}->{$_} = 1 for $online_node_usage->list_nodes();
108 # overwrite default if service is bound to a specific group
109 if (my $group_id = $service_conf->{group
}) {
110 $group = $groups->{ids
}->{$group_id} if $groups->{ids
}->{$group_id};
116 # groups available nodes with their priority as group index
117 sub get_node_priority_groups
{
118 my ($group, $online_node_usage) = @_;
121 my $group_members = {};
122 foreach my $entry (keys %{$group->{nodes
}}) {
123 my ($node, $pri) = ($entry, 0);
124 if ($entry =~ m/^(\S+):(\d+)$/) {
125 ($node, $pri) = ($1, $2);
127 next if !$online_node_usage->contains_node($node); # offline
128 $pri_groups->{$pri}->{$node} = 1;
129 $group_members->{$node} = $pri;
132 # add non-group members to unrestricted groups (priority -1)
133 if (!$group->{restricted
}) {
135 for my $node ($online_node_usage->list_nodes()) {
136 next if defined($group_members->{$node});
137 $pri_groups->{$pri}->{$node} = 1;
138 $group_members->{$node} = -1;
142 return ($pri_groups, $group_members);
145 sub select_service_node
{
146 my ($groups, $online_node_usage, $sid, $service_conf, $current_node, $try_next, $tried_nodes, $maintenance_fallback) = @_;
148 my $group = get_service_group
($groups, $online_node_usage, $service_conf);
150 my ($pri_groups, $group_members) = get_node_priority_groups
($group, $online_node_usage);
152 my @pri_list = sort {$b <=> $a} keys %$pri_groups;
153 return undef if !scalar(@pri_list);
155 # stay on current node if possible (avoids random migrations)
156 if (!$try_next && $group->{nofailback
} && defined($group_members->{$current_node})) {
157 return $current_node;
160 # select node from top priority node list
162 my $top_pri = $pri_list[0];
164 # try to avoid nodes where the service failed already if we want to relocate
166 foreach my $node (@$tried_nodes) {
167 delete $pri_groups->{$top_pri}->{$node};
171 return $maintenance_fallback
172 if defined($maintenance_fallback) && $pri_groups->{$top_pri}->{$maintenance_fallback};
174 return $current_node if !$try_next && $pri_groups->{$top_pri}->{$current_node};
176 my $scores = $online_node_usage->score_nodes_to_start_service($sid, $current_node);
178 $scores->{$a} <=> $scores->{$b} || $a cmp $b
179 } keys %{$pri_groups->{$top_pri}};
182 for (my $i = scalar(@nodes) - 1; $i >= 0; $i--) {
183 my $node = $nodes[$i];
184 if ($node eq $current_node) {
190 if (defined($found) && ($found < (scalar(@nodes) - 1))) {
191 return $nodes[$found + 1];
202 sub compute_new_uuid
{
206 return md5_base64
($state . $$ . time() . $uid_counter);
209 my $valid_service_states = {
221 # FIXME with 'static' mode and thousands of services, the overhead can be noticable and the fact
222 # that this function is called for each state change and upon recovery doesn't help.
223 sub recompute_online_node_usage
{
226 my $haenv = $self->{haenv
};
228 my $online_nodes = $self->{ns
}->list_online_nodes();
230 my $online_node_usage;
232 if (my $mode = $self->{crs
}->{scheduler
}) {
233 if ($mode eq 'static') {
234 $online_node_usage = eval {
235 my $scheduler = PVE
::HA
::Usage
::Static-
>new($haenv);
236 $scheduler->add_node($_) for $online_nodes->@*;
239 $haenv->log('warning', "fallback to 'basic' scheduler mode, init for 'static' failed - $@")
241 } elsif ($mode eq 'basic') {
242 # handled below in the general fall-back case
244 $haenv->log('warning', "got unknown scheduler mode '$mode', using 'basic'");
248 # fallback to the basic algorithm in any case
249 if (!$online_node_usage) {
250 $online_node_usage = PVE
::HA
::Usage
::Basic-
>new($haenv);
251 $online_node_usage->add_node($_) for $online_nodes->@*;
254 foreach my $sid (sort keys %{$self->{ss
}}) {
255 my $sd = $self->{ss
}->{$sid};
256 my $state = $sd->{state};
257 my $target = $sd->{target
}; # optional
258 if ($online_node_usage->contains_node($sd->{node
})) {
260 $state eq 'started' || $state eq 'request_stop' || $state eq 'fence' ||
261 $state eq 'freeze' || $state eq 'error' || $state eq 'recovery'
263 $online_node_usage->add_service_usage_to_node($sd->{node
}, $sid, $sd->{node
});
264 } elsif (($state eq 'migrate') || ($state eq 'relocate')) {
265 my $source = $sd->{node
};
266 # count it for both, source and target as load is put on both
267 $online_node_usage->add_service_usage_to_node($source, $sid, $source, $target);
268 $online_node_usage->add_service_usage_to_node($target, $sid, $source, $target);
269 } elsif ($state eq 'stopped') {
272 die "should not be reached (sid = '$sid', state = '$state')";
274 } elsif (defined($target) && $online_node_usage->contains_node($target)) {
275 if ($state eq 'migrate' || $state eq 'relocate') {
276 # to correctly track maintenance modi and also consider the target as used for the
277 # case a node dies, as we cannot really know if the to-be-aborted incoming migration
278 # has already cleaned up all used resources
279 $online_node_usage->add_service_usage_to_node($target, $sid, $sd->{node
}, $target);
284 $self->{online_node_usage
} = $online_node_usage;
287 my $change_service_state = sub {
288 my ($self, $sid, $new_state, %params) = @_;
290 my ($haenv, $ss) = ($self->{haenv
}, $self->{ss
});
292 my $sd = $ss->{$sid} || die "no such service '$sid";
294 my $old_state = $sd->{state};
295 my $old_node = $sd->{node
};
296 my $old_failed_nodes = $sd->{failed_nodes
};
297 my $old_maintenance_node = $sd->{maintenance_node
};
299 die "no state change" if $old_state eq $new_state; # just to be sure
301 die "invalid CRM service state '$new_state'\n" if !$valid_service_states->{$new_state};
303 foreach my $k (keys %$sd) { delete $sd->{$k}; };
305 $sd->{state} = $new_state;
306 $sd->{node
} = $old_node;
307 $sd->{failed_nodes
} = $old_failed_nodes if defined($old_failed_nodes);
308 $sd->{maintenance_node
} = $old_maintenance_node if defined($old_maintenance_node);
311 foreach my $k (sort keys %params) {
313 $text_state .= ", " if $text_state;
314 $text_state .= "$k = $v";
318 $self->recompute_online_node_usage();
320 $sd->{uid
} = compute_new_uuid
($new_state);
322 $text_state = " ($text_state)" if $text_state;
323 $haenv->log('info', "service '$sid': state changed from '${old_state}'" .
324 " to '${new_state}'$text_state");
327 # clean up a possible bad state from a recovered service to allow its start
328 my $fence_recovery_cleanup = sub {
329 my ($self, $sid, $fenced_node) = @_;
331 my $haenv = $self->{haenv
};
333 my (undef, $type, $id) = $haenv->parse_sid($sid);
334 my $plugin = PVE
::HA
::Resources-
>lookup($type);
337 die "unknown resource type '$type'" if !$plugin;
339 # locks may block recovery, cleanup those which are safe to remove after fencing,
340 # i.e., after the original node was reset and thus all it's state
341 my $removable_locks = [
352 if (my $removed_lock = $plugin->remove_locks($haenv, $id, $removable_locks, $fenced_node)) {
353 $haenv->log('warning', "removed leftover lock '$removed_lock' from recovered " .
354 "service '$sid' to allow its start.");
358 # read LRM status for all nodes
359 sub read_lrm_status
{
362 my $nodes = $self->{ns
}->list_nodes();
363 my $haenv = $self->{haenv
};
367 foreach my $node (@$nodes) {
368 my $lrm_status = $haenv->read_lrm_status($node);
369 $modes->{$node} = $lrm_status->{mode
} || 'active';
370 foreach my $uid (keys %{$lrm_status->{results
}}) {
371 next if $results->{$uid}; # should not happen
372 $results->{$uid} = $lrm_status->{results
}->{$uid};
376 return ($results, $modes);
379 # read new crm commands and save them into crm master status
380 sub update_crm_commands
{
383 my ($haenv, $ms, $ns, $ss) = ($self->{haenv
}, $self->{ms
}, $self->{ns
}, $self->{ss
});
385 my $cmdlist = $haenv->read_crm_commands();
387 foreach my $cmd (split(/\n/, $cmdlist)) {
390 if ($cmd =~ m/^(migrate|relocate)\s+(\S+)\s+(\S+)$/) {
391 my ($task, $sid, $node) = ($1, $2, $3);
392 if (my $sd = $ss->{$sid}) {
393 if (!$ns->node_is_online($node)) {
394 $haenv->log('err', "crm command error - node not online: $cmd");
396 if ($node eq $sd->{node
}) {
397 $haenv->log('info', "ignore crm command - service already on target node: $cmd");
399 $haenv->log('info', "got crm command: $cmd");
400 $ss->{$sid}->{cmd
} = [ $task, $node ];
404 $haenv->log('err', "crm command error - no such service: $cmd");
407 } elsif ($cmd =~ m/^stop\s+(\S+)\s+(\S+)$/) {
408 my ($sid, $timeout) = ($1, $2);
409 if (my $sd = $ss->{$sid}) {
410 $haenv->log('info', "got crm command: $cmd");
411 $ss->{$sid}->{cmd
} = [ 'stop', $timeout ];
413 $haenv->log('err', "crm command error - no such service: $cmd");
416 $haenv->log('err', "unable to parse crm command: $cmd");
425 my ($haenv, $ms, $ns, $ss) = ($self->{haenv
}, $self->{ms
}, $self->{ns
}, $self->{ss
});
427 my ($node_info) = $haenv->get_node_info();
428 my ($lrm_results, $lrm_modes) = $self->read_lrm_status();
430 $ns->update($node_info, $lrm_modes);
432 if (!$ns->node_is_operational($haenv->nodename())) {
433 $haenv->log('info', "master seems offline");
437 $self->update_crs_scheduler_mode();
439 my $sc = $haenv->read_service_config();
441 $self->{groups
} = $haenv->read_group_config(); # update
443 # compute new service status
446 foreach my $sid (sort keys %$sc) {
447 next if $ss->{$sid}; # already there
448 my $cd = $sc->{$sid};
449 next if $cd->{state} eq 'ignored';
451 $haenv->log('info', "adding new service '$sid' on node '$cd->{node}'");
452 # assume we are running to avoid relocate running service at add
453 my $state = ($cd->{state} eq 'started') ?
'started' : 'request_stop';
455 state => $state, node
=> $cd->{node
}, uid
=> compute_new_uuid
('started'),
459 # remove stale or ignored services from manager state
460 foreach my $sid (keys %$ss) {
461 next if $sc->{$sid} && $sc->{$sid}->{state} ne 'ignored';
463 my $reason = defined($sc->{$sid}) ?
'ignored state requested' : 'no config';
464 $haenv->log('info', "removing stale service '$sid' ($reason)");
466 # remove all service related state information
470 $self->update_crm_commands();
475 $self->recompute_online_node_usage();
477 foreach my $sid (sort keys %$ss) {
478 my $sd = $ss->{$sid};
479 my $cd = $sc->{$sid} || { state => 'disabled' };
481 my $lrm_res = $sd->{uid
} ?
$lrm_results->{$sd->{uid
}} : undef;
483 my $last_state = $sd->{state};
485 if ($last_state eq 'stopped') {
487 $self->next_state_stopped($sid, $cd, $sd, $lrm_res);
489 } elsif ($last_state eq 'started') {
491 $self->next_state_started($sid, $cd, $sd, $lrm_res);
493 } elsif ($last_state eq 'migrate' || $last_state eq 'relocate') {
495 $self->next_state_migrate_relocate($sid, $cd, $sd, $lrm_res);
497 } elsif ($last_state eq 'fence') {
499 # do nothing here - wait until fenced
501 } elsif ($last_state eq 'recovery') {
503 $self->next_state_recovery($sid, $cd, $sd, $lrm_res);
505 } elsif ($last_state eq 'request_stop') {
507 $self->next_state_request_stop($sid, $cd, $sd, $lrm_res);
509 } elsif ($last_state eq 'freeze') {
511 my $lrm_mode = $sd->{node
} ?
$lrm_modes->{$sd->{node
}} : undef;
512 if ($lrm_mode && $lrm_mode eq 'active') { # unfreeze if active again
513 my $state = ($cd->{state} eq 'started') ?
'started' : 'request_stop';
514 $change_service_state->($self, $sid, $state);
517 } elsif ($last_state eq 'error') {
519 $self->next_state_error($sid, $cd, $sd, $lrm_res);
523 die "unknown service state '$last_state'";
526 my $lrm_mode = $sd->{node
} ?
$lrm_modes->{$sd->{node
}} : undef;
527 if ($lrm_mode && $lrm_mode eq 'restart') {
528 my $state = $sd->{state};
529 if ($state eq 'started' || $state eq 'stopped'|| $state eq 'request_stop') {
530 $change_service_state->($self, $sid, 'freeze');
534 $repeat = 1 if $sd->{state} ne $last_state;
538 my $fenced_nodes = {};
539 foreach my $sid (sort keys %$ss) {
540 my ($service_state, $service_node) = $ss->{$sid}->@{'state', 'node'};
541 next if $service_state ne 'fence';
543 if (!defined($fenced_nodes->{$service_node})) {
544 $fenced_nodes->{$service_node} = $ns->fence_node($service_node) || 0;
547 next if !$fenced_nodes->{$service_node};
549 # node fence was successful - recover service
550 $change_service_state->($self, $sid, 'recovery');
551 $repeat = 1; # for faster recovery execution
554 # Avoid that a node without services in 'fence' state (e.g., removed
555 # manually by admin) is stuck with the 'fence' node state.
556 for my $node (sort grep { !defined($fenced_nodes->{$_}) } keys $ns->{status
}->%*) {
557 next if $ns->get_node_state($node) ne 'fence';
559 $haenv->log('notice', "node '$node' in fence state but no services to-fence! admin interference?!");
560 $repeat = 1 if $ns->fence_node($node);
566 $self->flush_master_status();
569 # functions to compute next service states
570 # $cd: service configuration data (read only)
571 # $sd: service status data (read only)
573 # Note: use change_service_state() to alter state
576 sub next_state_request_stop
{
577 my ($self, $sid, $cd, $sd, $lrm_res) = @_;
579 my $haenv = $self->{haenv
};
580 my $ns = $self->{ns
};
582 # check result from LRM daemon
584 my $exit_code = $lrm_res->{exit_code
};
585 if ($exit_code == SUCCESS
) {
586 &$change_service_state($self, $sid, 'stopped');
589 $haenv->log('err', "service '$sid' stop failed (exit code $exit_code)");
590 &$change_service_state($self, $sid, 'error'); # fixme: what state?
595 if ($ns->node_is_offline_delayed($sd->{node
})) {
596 &$change_service_state($self, $sid, 'fence');
601 sub next_state_migrate_relocate
{
602 my ($self, $sid, $cd, $sd, $lrm_res) = @_;
604 my $haenv = $self->{haenv
};
605 my $ns = $self->{ns
};
607 # check result from LRM daemon
609 my $exit_code = $lrm_res->{exit_code
};
610 my $req_state = $cd->{state} eq 'started' ?
'started' : 'request_stop';
611 if ($exit_code == SUCCESS
) {
612 &$change_service_state($self, $sid, $req_state, node
=> $sd->{target
});
614 } elsif ($exit_code == EWRONG_NODE
) {
615 $haenv->log('err', "service '$sid' - migration failed: service" .
616 " registered on wrong node!");
617 &$change_service_state($self, $sid, 'error');
619 $haenv->log('err', "service '$sid' - migration failed (exit code $exit_code)");
620 &$change_service_state($self, $sid, $req_state, node
=> $sd->{node
});
625 if ($ns->node_is_offline_delayed($sd->{node
})) {
626 &$change_service_state($self, $sid, 'fence');
631 sub next_state_stopped
{
632 my ($self, $sid, $cd, $sd, $lrm_res) = @_;
634 my $haenv = $self->{haenv
};
635 my $ns = $self->{ns
};
637 if ($sd->{node
} ne $cd->{node
}) {
638 # this can happen if we fence a node with active migrations
639 # hack: modify $sd (normally this should be considered read-only)
640 $haenv->log('info', "fixup service '$sid' location ($sd->{node} => $cd->{node})");
641 $sd->{node
} = $cd->{node
};
645 my $cmd = shift @{$sd->{cmd
}};
647 if ($cmd eq 'migrate' || $cmd eq 'relocate') {
648 my $target = shift @{$sd->{cmd
}};
649 if (!$ns->node_is_online($target)) {
650 $haenv->log('err', "ignore service '$sid' $cmd request - node '$target' not online");
651 } elsif ($sd->{node
} eq $target) {
652 $haenv->log('info', "ignore service '$sid' $cmd request - service already on node '$target'");
654 $change_service_state->($self, $sid, $cmd, node
=> $sd->{node
}, target
=> $target);
657 } elsif ($cmd eq 'stop') {
658 $haenv->log('info', "ignore service '$sid' $cmd request - service already stopped");
660 $haenv->log('err', "unknown command '$cmd' for service '$sid'");
665 if ($cd->{state} eq 'disabled') {
666 # NOTE: do nothing here, the stop state is an exception as we do not
667 # process the LRM result here, thus the LRM always tries to stop the
668 # service (protection for the case no CRM is active)
672 if ($ns->node_is_offline_delayed($sd->{node
}) && $ns->get_node_state($sd->{node
}) ne 'maintenance') {
673 &$change_service_state($self, $sid, 'fence');
677 if ($cd->{state} eq 'stopped') {
678 # almost the same as 'disabled' state but the service will also get recovered
682 if ($cd->{state} eq 'started') {
683 # simply mark it started, if it's on the wrong node
684 # next_state_started will fix that for us
685 &$change_service_state($self, $sid, 'started', node
=> $sd->{node
});
689 $haenv->log('err', "service '$sid' - unknown state '$cd->{state}' in service configuration");
692 sub record_service_failed_on_node
{
693 my ($self, $sid, $node) = @_;
695 if (!defined($self->{ss
}->{$sid}->{failed_nodes
})) {
696 $self->{ss
}->{$sid}->{failed_nodes
} = [];
699 push @{$self->{ss
}->{$sid}->{failed_nodes
}}, $node;
702 sub next_state_started
{
703 my ($self, $sid, $cd, $sd, $lrm_res) = @_;
705 my $haenv = $self->{haenv
};
706 my $master_status = $self->{ms
};
707 my $ns = $self->{ns
};
709 if (!$ns->node_is_online($sd->{node
})) {
710 if ($ns->node_is_offline_delayed($sd->{node
})) {
711 &$change_service_state($self, $sid, 'fence');
713 if ($ns->get_node_state($sd->{node
}) ne 'maintenance') {
716 # save current node as fallback for when it comes out of
718 $sd->{maintenance_node
} = $sd->{node
};
722 if ($cd->{state} eq 'disabled' || $cd->{state} eq 'stopped') {
723 &$change_service_state($self, $sid, 'request_stop');
727 if ($cd->{state} eq 'started') {
730 my $cmd = shift @{$sd->{cmd
}};
732 if ($cmd eq 'migrate' || $cmd eq 'relocate') {
733 my $target = shift @{$sd->{cmd
}};
734 if (!$ns->node_is_online($target)) {
735 $haenv->log('err', "ignore service '$sid' $cmd request - node '$target' not online");
736 } elsif ($sd->{node
} eq $target) {
737 $haenv->log('info', "ignore service '$sid' $cmd request - service already on node '$target'");
739 $haenv->log('info', "$cmd service '$sid' to node '$target'");
740 &$change_service_state($self, $sid, $cmd, node
=> $sd->{node
}, target
=> $target);
742 } elsif ($cmd eq 'stop') {
743 my $timeout = shift @{$sd->{cmd
}};
745 $haenv->log('info', "request immediate service hard-stop for service '$sid'");
747 $haenv->log('info', "request graceful stop with timeout '$timeout' for service '$sid'");
749 &$change_service_state($self, $sid, 'request_stop', timeout
=> $timeout);
750 $haenv->update_service_config($sid, {'state' => 'stopped'});
752 $haenv->log('err', "unknown command '$cmd' for service '$sid'");
763 my $ec = $lrm_res->{exit_code
};
764 if ($ec == SUCCESS
) {
766 if (defined($sd->{failed_nodes
})) {
767 $haenv->log('info', "relocation policy successful for '$sid' on node '$sd->{node}'," .
768 " failed nodes: " . join(', ', @{$sd->{failed_nodes
}}) );
771 delete $sd->{failed_nodes
};
773 # store flag to indicate successful start - only valid while state == 'started'
776 } elsif ($ec == ERROR
|| $ec == EWRONG_NODE
) {
778 delete $sd->{running
};
780 # apply our relocate policy if we got ERROR from the LRM
781 $self->record_service_failed_on_node($sid, $sd->{node
});
783 if (scalar(@{$sd->{failed_nodes
}}) <= $cd->{max_relocate
}) {
785 # tell select_service_node to relocate if possible
788 $haenv->log('warning', "starting service $sid on node".
789 " '$sd->{node}' failed, relocating service.");
793 $haenv->log('err', "recovery policy for service $sid " .
794 "failed, entering error state. Failed nodes: ".
795 join(', ', @{$sd->{failed_nodes
}}));
796 &$change_service_state($self, $sid, 'error');
801 $self->record_service_failed_on_node($sid, $sd->{node
});
803 $haenv->log('err', "service '$sid' got unrecoverable error" .
804 " (exit code $ec))");
805 # we have no save way out (yet) for other errors
806 &$change_service_state($self, $sid, 'error');
811 my $node = select_service_node
(
813 $self->{online_node_usage
},
819 $sd->{maintenance_node
},
822 if ($node && ($sd->{node
} ne $node)) {
823 $self->{online_node_usage
}->add_service_usage_to_node($node, $sid, $sd->{node
});
825 if (defined(my $fallback = $sd->{maintenance_node
})) {
826 if ($node eq $fallback) {
827 $haenv->log('info', "moving service '$sid' back to '$fallback', node came back from maintenance.");
828 delete $sd->{maintenance_node
};
829 } elsif ($sd->{node
} ne $fallback) {
830 $haenv->log('info', "dropping maintenance fallback node '$fallback' for '$sid'");
831 delete $sd->{maintenance_node
};
835 if ($cd->{type
} eq 'vm') {
836 $haenv->log('info', "migrate service '$sid' to node '$node' (running)");
837 &$change_service_state($self, $sid, 'migrate', node
=> $sd->{node
}, target
=> $node);
839 $haenv->log('info', "relocate service '$sid' to node '$node'");
840 &$change_service_state($self, $sid, 'relocate', node
=> $sd->{node
}, target
=> $node);
843 if ($try_next && !defined($node)) {
844 $haenv->log('warning', "Start Error Recovery: Tried all available " .
845 " nodes for service '$sid', retry start on current node. " .
846 "Tried nodes: " . join(', ', @{$sd->{failed_nodes
}}));
848 # ensure service get started again if it went unexpected down
849 # but ensure also no LRM result gets lost
850 $sd->{uid
} = compute_new_uuid
($sd->{state}) if defined($lrm_res);
857 $haenv->log('err', "service '$sid' - unknown state '$cd->{state}' in service configuration");
860 sub next_state_error
{
861 my ($self, $sid, $cd, $sd, $lrm_res) = @_;
863 my $ns = $self->{ns
};
864 my $ms = $self->{ms
};
866 if ($cd->{state} eq 'disabled') {
867 # clean up on error recovery
868 delete $sd->{failed_nodes
};
870 &$change_service_state($self, $sid, 'stopped');
876 # after a node was fenced this recovers the service to a new node
877 sub next_state_recovery
{
878 my ($self, $sid, $cd, $sd, $lrm_res) = @_;
880 my ($haenv, $ss) = ($self->{haenv
}, $self->{ss
});
881 my $ns = $self->{ns
};
882 my $ms = $self->{ms
};
884 if ($sd->{state} ne 'recovery') { # should not happen
885 $haenv->log('err', "cannot recover service '$sid' from fencing, wrong state '$sd->{state}'");
889 my $fenced_node = $sd->{node
}; # for logging purpose
891 $self->recompute_online_node_usage(); # we want the most current node state
893 my $recovery_node = select_service_node
(
895 $self->{online_node_usage
},
901 if ($recovery_node) {
902 my $msg = "recover service '$sid' from fenced node '$fenced_node' to node '$recovery_node'";
903 if ($recovery_node eq $fenced_node) {
904 # can happen if restriced groups and the node came up again OK
905 $msg = "recover service '$sid' to previous failed and fenced node '$fenced_node' again";
907 $haenv->log('info', "$msg");
909 $fence_recovery_cleanup->($self, $sid, $fenced_node);
911 $haenv->steal_service($sid, $sd->{node
}, $recovery_node);
912 $self->{online_node_usage
}->add_service_usage_to_node($recovery_node, $sid, $recovery_node);
914 # NOTE: $sd *is normally read-only*, fencing is the exception
915 $cd->{node
} = $sd->{node
} = $recovery_node;
916 my $new_state = ($cd->{state} eq 'started') ?
'started' : 'request_stop';
917 $change_service_state->($self, $sid, $new_state, node
=> $recovery_node);
919 # no possible node found, cannot recover - but retry later, as we always try to make it available
920 $haenv->log('err', "recovering service '$sid' from fenced node '$fenced_node' failed, no recovery node found");
922 if ($cd->{state} eq 'disabled') {
923 # allow getting a service out of recovery manually if an admin disables it.
924 delete $sd->{failed_nodes
}; # clean up on recovery to stopped
925 $change_service_state->($self, $sid, 'stopped'); # must NOT go through request_stop