1 package PVE
::HA
::Manager
;
5 use Digest
::MD5
qw(md5_base64);
9 use PVE
::HA
::NodeStatus
;
12 my ($this, $haenv) = @_;
14 my $class = ref($this) || $this;
16 my $ms = $haenv->read_manager_status();
18 $ms->{master_node
} = $haenv->nodename();
20 my $ns = PVE
::HA
::NodeStatus-
>new($haenv, $ms->{node_status
} || {});
22 # fixme: use separate class PVE::HA::ServiceStatus
23 my $ss = $ms->{service_status
} || {};
27 ms
=> $ms, # master status
28 ns
=> $ns, # PVE::HA::NodeStatus
29 ss
=> $ss, # service status
41 sub flush_master_status
{
44 my ($haenv, $ms, $ns, $ss) = ($self->{haenv
}, $self->{ms
}, $self->{ns
}, $self->{ss
});
46 $ms->{node_status
} = $ns->{status
};
47 $ms->{service_status
} = $ss;
49 $haenv->write_manager_status($ms);
52 sub select_service_node
{
53 my ($groups, $online_node_usage, $service_conf, $current_node, $try_next) = @_;
55 my $group = { 'nodes' => $service_conf->{node
} }; # default group
57 $group = $groups->{ids
}->{$service_conf->{group
}} if $service_conf->{group
} &&
58 $groups->{ids
}->{$service_conf->{group
}};
61 my $group_members = {};
62 foreach my $entry (PVE
::Tools
::split_list
($group->{nodes
})) {
63 my ($node, $pri) = ($entry, 0);
64 if ($entry =~ m/^(\S+):(\d+)$/) {
65 ($node, $pri) = ($1, $2);
67 next if !defined($online_node_usage->{$node}); # offline
68 $pri_groups->{$pri}->{$node} = 1;
69 $group_members->{$node} = $pri;
73 # add non-group members to unrestricted groups (priority -1)
74 if (!$group->{restricted
}) {
76 foreach my $node (keys %$online_node_usage) {
77 next if defined($group_members->{$node});
78 $pri_groups->{$pri}->{$node} = 1;
79 $group_members->{$node} = -1;
84 my @pri_list = sort {$b <=> $a} keys %$pri_groups;
85 return undef if !scalar(@pri_list);
87 if (!$try_next && $group->{nofailback
} && defined($group_members->{$current_node})) {
91 # select node from top priority node list
93 my $top_pri = $pri_list[0];
95 my @nodes = sort { $online_node_usage->{$a} <=> $online_node_usage->{$b} } keys %{$pri_groups->{$top_pri}};
98 for (my $i = scalar(@nodes) - 1; $i >= 0; $i--) {
99 my $node = $nodes[$i];
100 if ($node eq $current_node) {
108 if (defined($found) && ($found < (scalar(@nodes) - 1))) {
109 return $nodes[$found + 1];
116 return $nodes[$found] if defined($found);
125 my $valid_service_states = {
135 sub recompute_online_node_usage
{
138 my $online_node_usage = {};
140 my $online_nodes = $self->{ns
}->list_online_nodes();
142 foreach my $node (@$online_nodes) {
143 $online_node_usage->{$node} = 0;
146 foreach my $sid (keys %{$self->{ss
}}) {
147 my $sd = $self->{ss
}->{$sid};
148 my $state = $sd->{state};
149 if (defined($online_node_usage->{$sd->{node
}})) {
150 if (($state eq 'started') || ($state eq 'request_stop') ||
151 ($state eq 'fence') || ($state eq 'error')) {
152 $online_node_usage->{$sd->{node
}}++;
153 } elsif (($state eq 'migrate') || ($state eq 'relocate')) {
154 $online_node_usage->{$sd->{target
}}++;
155 } elsif ($state eq 'stopped') {
158 die "should not be reached";
163 $self->{online_node_usage
} = $online_node_usage;
166 my $change_service_state = sub {
167 my ($self, $sid, $new_state, %params) = @_;
169 my ($haenv, $ss) = ($self->{haenv
}, $self->{ss
});
171 my $sd = $ss->{$sid} || die "no such service '$sid";
173 my $old_state = $sd->{state};
174 my $old_node = $sd->{node
};
176 die "no state change" if $old_state eq $new_state; # just to be sure
178 die "invalid CRM service state '$new_state'\n" if !$valid_service_states->{$new_state};
180 foreach my $k (keys %$sd) { delete $sd->{$k}; };
182 $sd->{state} = $new_state;
183 $sd->{node
} = $old_node;
186 foreach my $k (keys %params) {
188 $text_state .= ", " if $text_state;
189 $text_state .= "$k = $v";
193 $self->recompute_online_node_usage();
196 $sd->{uid
} = md5_base64
($new_state . $$ . time() . $uid_counter);
198 $text_state = " ($text_state)" if $text_state;
199 $haenv->log('info', "service '$sid': state changed from '${old_state}' to '${new_state}' $text_state\n");
202 # read LRM status for all active nodes
203 sub read_lrm_status
{
206 my $nodes = $self->{ns
}->list_online_nodes();
207 my $haenv = $self->{haenv
};
211 foreach my $node (@$nodes) {
212 my $ls = $haenv->read_lrm_status($node);
213 foreach my $uid (keys %$ls) {
214 next if $res->{$uid}; # should not happen
215 $res->{$uid} = $ls->{$uid};
222 # read new crm commands and save them into crm master status
223 sub update_crm_commands
{
226 my ($haenv, $ms, $ns, $ss) = ($self->{haenv
}, $self->{ms
}, $self->{ns
}, $self->{ss
});
228 my $cmdlist = $haenv->read_crm_commands();
230 foreach my $cmd (split(/\n/, $cmdlist)) {
233 if ($cmd =~ m/^(migrate|relocate)\s+(\S+)\s+(\S+)$/) {
234 my ($task, $sid, $node) = ($1, $2, $3);
235 if (my $sd = $ss->{$sid}) {
236 if (!$ns->node_is_online($node)) {
237 $haenv->log('err', "crm command error - node not online: $cmd");
239 if ($node eq $sd->{node
}) {
240 $haenv->log('info', "ignore crm command - service already on target node: $cmd");
242 $haenv->log('info', "got crm command: $cmd");
243 $ss->{$sid}->{cmd
} = [ $task, $node];
247 $haenv->log('err', "crm command error - no such service: $cmd");
251 $haenv->log('err', "unable to parse crm command: $cmd");
260 my ($haenv, $ms, $ns, $ss) = ($self->{haenv
}, $self->{ms
}, $self->{ns
}, $self->{ss
});
262 $ns->update($haenv->get_node_info());
264 if (!$ns->node_is_online($haenv->nodename())) {
265 $haenv->log('info', "master seems offline\n");
269 my $lrm_status = $self->read_lrm_status();
271 my $sc = $haenv->read_service_config();
273 $self->{groups
} = $haenv->read_group_config(); # update
275 # compute new service status
278 foreach my $sid (keys %$sc) {
279 next if $ss->{$sid}; # already there
280 $haenv->log('info', "Adding new service '$sid'\n");
281 # assume we are running to avoid relocate running service at add
282 $ss->{$sid} = { state => 'started', node
=> $sc->{$sid}->{node
}};
285 $self->update_crm_commands();
290 $self->recompute_online_node_usage();
292 foreach my $sid (keys %$ss) {
293 my $sd = $ss->{$sid};
294 my $cd = $sc->{$sid} || { state => 'disabled' };
296 my $lrm_res = $sd->{uid
} ?
$lrm_status->{$sd->{uid
}} : undef;
298 my $last_state = $sd->{state};
300 if ($last_state eq 'stopped') {
302 $self->next_state_stopped($sid, $cd, $sd, $lrm_res);
304 } elsif ($last_state eq 'started') {
306 $self->next_state_started($sid, $cd, $sd, $lrm_res);
308 } elsif ($last_state eq 'migrate' || $last_state eq 'relocate') {
310 $self->next_state_migrate_relocate($sid, $cd, $sd, $lrm_res);
312 } elsif ($last_state eq 'fence') {
314 # do nothing here - wait until fenced
316 } elsif ($last_state eq 'request_stop') {
318 $self->next_state_request_stop($sid, $cd, $sd, $lrm_res);
320 } elsif ($last_state eq 'error') {
326 die "unknown service state '$last_state'";
329 $repeat = 1 if $sd->{state} ne $last_state;
333 my $fenced_nodes = {};
334 foreach my $sid (keys %$ss) {
335 my $sd = $ss->{$sid};
336 next if $sd->{state} ne 'fence';
338 if (!defined($fenced_nodes->{$sd->{node
}})) {
339 $fenced_nodes->{$sd->{node
}} = $ns->fence_node($sd->{node
}) || 0;
342 next if !$fenced_nodes->{$sd->{node
}};
344 # node fence was sucessful - mark service as stopped
345 &$change_service_state($self, $sid, 'stopped');
351 # remove stale services
354 $self->flush_master_status();
357 # functions to compute next service states
358 # $cd: service configuration data (read only)
359 # $sd: service status data (read only)
361 # Note: use change_service_state() to alter state
364 sub next_state_request_stop
{
365 my ($self, $sid, $cd, $sd, $lrm_res) = @_;
367 my $haenv = $self->{haenv
};
368 my $ns = $self->{ns
};
370 # check result from LRM daemon
372 my $exit_code = $lrm_res->{exit_code
};
373 if ($exit_code == 0) {
374 &$change_service_state($self, $sid, 'stopped');
377 &$change_service_state($self, $sid, 'error'); # fixme: what state?
382 if (!$ns->node_is_online($sd->{node
})) {
383 &$change_service_state($self, $sid, 'fence');
388 sub next_state_migrate_relocate
{
389 my ($self, $sid, $cd, $sd, $lrm_res) = @_;
391 my $haenv = $self->{haenv
};
392 my $ns = $self->{ns
};
394 # check result from LRM daemon
396 my $exit_code = $lrm_res->{exit_code
};
397 if ($exit_code == 0) {
398 &$change_service_state($self, $sid, 'started', node
=> $sd->{target
});
401 $haenv->log('err', "service '$sid' - migration failed (exit code $exit_code)");
402 &$change_service_state($self, $sid, 'started', node
=> $sd->{node
});
407 if (!$ns->node_is_online($sd->{node
})) {
408 &$change_service_state($self, $sid, 'fence');
414 sub next_state_stopped
{
415 my ($self, $sid, $cd, $sd, $lrm_res) = @_;
417 my $haenv = $self->{haenv
};
418 my $ns = $self->{ns
};
420 if ($sd->{node
} ne $cd->{node
}) {
421 # this can happen if we fence a node with active migrations
422 # hack: modify $sd (normally this should be considered read-only)
423 $haenv->log('info', "fixup service '$sid' location ($sd->{node} => $cd->{node}");
424 $sd->{node
} = $cd->{node
};
428 my ($cmd, $target) = @{$sd->{cmd
}};
431 if ($cmd eq 'migrate' || $cmd eq 'relocate') {
432 if (!$ns->node_is_online($target)) {
433 $haenv->log('err', "ignore service '$sid' $cmd request - node '$target' not online");
434 } elsif ($sd->{node
} eq $target) {
435 $haenv->log('info', "ignore service '$sid' $cmd request - service already on node '$target'");
437 $haenv->change_service_location($sid, $target);
438 $cd->{node
} = $sd->{node
} = $target; # fixme: $sd is read-only??!!
439 $haenv->log('info', "$cmd service '$sid' to node '$target' (stopped)");
442 $haenv->log('err', "unknown command '$cmd' for service '$sid'");
446 if ($cd->{state} eq 'disabled') {
451 if ($cd->{state} eq 'enabled') {
452 if (my $node = select_service_node
($self->{groups
}, $self->{online_node_usage
}, $cd, $sd->{node
})) {
453 if ($node && ($sd->{node
} ne $node)) {
454 $haenv->change_service_location($sid, $node);
456 &$change_service_state($self, $sid, 'started', node
=> $node);
464 $haenv->log('err', "service '$sid' - unknown state '$cd->{state}' in service configuration");
467 sub next_state_started
{
468 my ($self, $sid, $cd, $sd, $lrm_res) = @_;
470 my $haenv = $self->{haenv
};
471 my $ns = $self->{ns
};
473 if (!$ns->node_is_online($sd->{node
})) {
475 &$change_service_state($self, $sid, 'fence');
479 if ($cd->{state} eq 'disabled') {
480 &$change_service_state($self, $sid, 'request_stop');
484 if ($cd->{state} eq 'enabled') {
487 my ($cmd, $target) = @{$sd->{cmd
}};
490 if ($cmd eq 'migrate' || $cmd eq 'relocate') {
491 if (!$ns->node_is_online($target)) {
492 $haenv->log('err', "ignore service '$sid' $cmd request - node '$target' not online");
493 } elsif ($sd->{node
} eq $target) {
494 $haenv->log('info', "ignore service '$sid' $cmd request - service already on node '$target'");
496 $haenv->log('info', "$cmd service '$sid' to node '$target' (running)");
497 &$change_service_state($self, $sid, $cmd, node
=> $sd->{node
}, target
=> $target);
500 $haenv->log('err', "unknown command '$cmd' for service '$sid'");
505 if ($lrm_res && ($lrm_res->{exit_code
} != 0)) { # fixme: other exit codes?
509 my $node = select_service_node
($self->{groups
}, $self->{online_node_usage
},
510 $cd, $sd->{node
}, $try_next);
512 if ($node && ($sd->{node
} ne $node)) {
513 $haenv->log('info', "migrate service '$sid' to node '$node' (running)");
514 &$change_service_state($self, $sid, 'migrate', node
=> $sd->{node
}, target
=> $node);
523 $haenv->log('err', "service '$sid' - unknown state '$cd->{state}' in service configuration");