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555 lines
22 KiB
555 lines
22 KiB
#!/usr/bin/perl |
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# |
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# This does shutdown-time tasks; migrate or stop servers, withdraw and power off the host. |
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# |
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# Exit codes; |
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# 0 = Normal exit. |
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# 1 = Any problem that causes an early exit. |
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# |
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# TODO: |
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# |
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use strict; |
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use warnings; |
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use Anvil::Tools; |
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require POSIX; |
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use Data::Dumper; |
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my $THIS_FILE = ($0 =~ /^.*\/(.*)$/)[0]; |
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my $running_directory = ($0 =~ /^(.*?)\/$THIS_FILE$/)[0]; |
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if (($running_directory =~ /^\./) && ($ENV{PWD})) |
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{ |
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$running_directory =~ s/^\./$ENV{PWD}/; |
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} |
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# Turn off buffering so that the pinwheel will display while waiting for the SSH call(s) to complete. |
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$| = 1; |
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my $anvil = Anvil::Tools->new(); |
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$anvil->data->{switches}{'job-uuid'} = ""; |
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$anvil->data->{switches}{'poweroff'} = ""; |
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$anvil->data->{switches}{'power-off'} = ""; # By default, the node is withdrawn. With this switch, the node will power off as well. |
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$anvil->data->{switches}{'stop-reason'} = ""; # Optionally used to set 'system::stop_reason' reason for this host. Valid values are 'user', 'power' and 'thermal'. |
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$anvil->data->{switches}{'stop-servers'} = ""; # Default behaviour is to migrate servers to the peer, if the peer is up. This overrides that and forces hosted servers to shut down. |
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$anvil->Get->switches; |
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$anvil->Log->variables({source => $THIS_FILE, line => __LINE__, level => 2, list => { |
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'switches::job-uuid' => $anvil->data->{switches}{'job-uuid'}, |
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'switches::poweroff' => $anvil->data->{switches}{'poweroff'}, |
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'switches::power-off' => $anvil->data->{switches}{'power-off'}, |
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'switches::stop-reason' => $anvil->data->{switches}{'stop-reason'}, |
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'switches::stop-servers' => $anvil->data->{switches}{'stop-servers'}, |
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}}); |
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# Let 'poweroff' work as a mis-spell of 'power-off' |
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if (($anvil->data->{switches}{'poweroff'}) && (not $anvil->data->{switches}{'power-off'})) |
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{ |
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$anvil->data->{switches}{'power-off'} = $anvil->data->{switches}{'poweroff'}; |
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$anvil->Log->variables({source => $THIS_FILE, line => __LINE__, level => 2, list => { |
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'switches::power-off' => $anvil->data->{switches}{'power-off'}, |
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}}); |
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} |
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$anvil->Log->entry({source => $THIS_FILE, line => __LINE__, 'print' => 1, level => 2, key => "log_0115", variables => { program => $THIS_FILE }}); |
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# Make sure we're running as 'root' |
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# $< == real UID, $> == effective UID |
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if (($< != 0) && ($> != 0)) |
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{ |
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# Not root |
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print $anvil->Words->string({key => "error_0005"})."\n"; |
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$anvil->nice_exit({exit_code => 1}); |
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} |
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$anvil->Database->connect(); |
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$anvil->Log->entry({source => $THIS_FILE, line => __LINE__, 'print' => 1, level => 3, key => "log_0132"}); |
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if (not $anvil->data->{sys}{database}{connections}) |
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{ |
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# No databases, update the job, sleep for a bit and then exit. The daemon will pick it up and try |
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# again after we exit. |
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$anvil->Log->entry({source => $THIS_FILE, line => __LINE__, 'print' => 1, level => 0, priority => "err", key => "error_0075"}); |
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sleep 10; |
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$anvil->nice_exit({exit_code => 1}); |
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} |
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# If we don't have a job UUID, try to find one. |
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if (not $anvil->data->{switches}{'job-uuid'}) |
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{ |
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# Load the job data. |
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$anvil->data->{switches}{'job-uuid'} = $anvil->Job->get_job_uuid({program => $THIS_FILE}); |
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$anvil->Log->variables({source => $THIS_FILE, line => __LINE__, level => 2, list => { "switches::job-uuid" => $anvil->data->{switches}{'job-uuid'} }}); |
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} |
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# If we still don't have a job-uuit, go into interactive mode. |
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if ($anvil->data->{switches}{'job-uuid'}) |
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{ |
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# Load the job data. |
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$anvil->Job->clear(); |
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$anvil->Job->get_job_details(); |
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$anvil->Job->update_progress({ |
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progress => 1, |
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job_picked_up_by => $$, |
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job_picked_up_at => time, |
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message => "message_0235", |
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}); |
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# Pull out the job data. |
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foreach my $line (split/\n/, $anvil->data->{jobs}{job_data}) |
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{ |
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if ($line =~ /power-off=(.*?)$/) |
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{ |
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$anvil->data->{switches}{'power-off'} = $1; |
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$anvil->Log->variables({source => $THIS_FILE, line => __LINE__, level => 2, list => { |
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'switches::power-off' => $anvil->data->{switches}{'power-off'}, |
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}}); |
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$anvil->Log->entry({source => $THIS_FILE, line => __LINE__, level => 1, key => "log_0687", variables => { reason => "#!string!log_0691!#" }}); |
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} |
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if ($line =~ /stop-reason=(.*?)$/) |
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{ |
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$anvil->data->{switches}{'stop-reason'} = $1; |
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$anvil->Log->variables({source => $THIS_FILE, line => __LINE__, level => 2, list => { |
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'switches::stop-reason' => $anvil->data->{switches}{'stop-reason'}, |
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}}); |
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} |
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if ($line =~ /stop-servers=(.*?)$/) |
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{ |
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$anvil->data->{switches}{'stop-servers'} = $1; |
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$anvil->Log->variables({source => $THIS_FILE, line => __LINE__, level => 2, list => { |
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'switches::stop-servers' => $anvil->data->{switches}{'stop-servers'}, |
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}}); |
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} |
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} |
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} |
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# Make sure we're in an Anvil! |
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$anvil->data->{sys}{anvil_uuid} = $anvil->Cluster->get_anvil_uuid(); |
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if (not $anvil->data->{sys}{anvil_uuid}) |
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{ |
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$anvil->Log->entry({source => $THIS_FILE, line => __LINE__, 'print' => 1, level => 0, priority => "err", key => "error_0260"}); |
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$anvil->Job->update_progress({progress => 100, message => "error_0260"}); |
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$anvil->nice_exit({exit_code => 1}); |
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} |
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# If no stop-reason was set, set it to 'user' |
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if (not $anvil->data->{switches}{'stop-reason'}) |
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{ |
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$anvil->data->{switches}{'stop-reason'} = "user"; |
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$anvil->Log->variables({source => $THIS_FILE, line => __LINE__, level => 2, list => { |
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'switches::stop-reason' => $anvil->data->{switches}{'stop-reason'}, |
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}}); |
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} |
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# Migrate or stop the servers, if any servers are running here. |
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process_servers($anvil); |
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# This waits on DRBD if we're SyncSource |
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wait_on_drbd($anvil); |
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# This stops pacemaker |
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stop_cluster($anvil); |
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# Are we powering off? |
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if ($anvil->data->{switches}{'power-off'}) |
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{ |
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# Yup |
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$anvil->Database->update_host_status({ |
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debug => 2, |
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host_uuid => $anvil->Get->host_uuid, |
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host_status => "stopping", |
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}); |
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$anvil->Log->entry({source => $THIS_FILE, line => __LINE__, level => 1, key => "log_0687", variables => { reason => "#!string!log_0692!#" }}); |
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$anvil->Log->entry({source => $THIS_FILE, line => __LINE__, 'print' => 1, level => 1, key => "job_0325"}); |
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$anvil->Job->update_progress({progress => 100, message => "job_0325"}); |
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# Set the stop reason. |
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if ($anvil->data->{switches}{'stop-reason'}) |
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{ |
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if ($anvil->data->{switches}{'stop-reason'} eq "none") |
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{ |
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$anvil->data->{switches}{'stop-reason'} = ""; |
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} |
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my $variable_uuid = $anvil->Database->insert_or_update_variables({ |
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variable_name => 'system::stop_reason', |
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variable_value => $anvil->data->{switches}{'stop-reason'}, |
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variable_default => '', |
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variable_description => 'striker_0279', |
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variable_section => 'system', |
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variable_source_uuid => $anvil->Get->host_uuid(), |
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variable_source_table => 'hosts', |
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}); |
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$anvil->Log->variables({source => $THIS_FILE, line => __LINE__, level => 3, list => { variable_uuid => $variable_uuid }}); |
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} |
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my $shell_call = $anvil->data->{path}{exe}{systemctl}." poweroff"; |
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$anvil->Log->variables({source => $THIS_FILE, line => __LINE__, level => 2, list => { shell_call => $shell_call }}); |
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my ($output, $return_code) = $anvil->System->call({shell_call => $shell_call, source => $THIS_FILE, line => __LINE__}); |
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# Unlikely we're still alive, but 'poweroff' does return once enqueued, so... |
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$anvil->Log->variables({source => $THIS_FILE, line => __LINE__, level => 2, list => { |
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output => $output, |
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return_code => $return_code, |
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}}); |
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} |
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else |
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{ |
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# We're not shutting down, so we're done |
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$anvil->Log->entry({source => $THIS_FILE, line => __LINE__, 'print' => 1, level => 1, key => "job_0326"}); |
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$anvil->Job->update_progress({progress => 100, message => "job_0326"}); |
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} |
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$anvil->nice_exit({exit_code => 0}); |
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############################################################################################################# |
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# Functions # |
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############################################################################################################# |
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# This takes down or migrates VMs, then withdraws from the cluster. |
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sub stop_cluster |
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{ |
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my ($anvil) = @_; |
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# We need to rename the server in the cluster, and we need both nodes up to do it. |
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my $pacemaker_stopped = 0; |
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my $waiting = 1; |
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while($waiting) |
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{ |
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$waiting = 0; |
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my $problem = $anvil->Cluster->parse_cib({debug => 2}); |
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$anvil->Log->variables({source => $THIS_FILE, line => __LINE__, level => 2, list => { problem => $problem }}); |
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if ($problem) |
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{ |
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# Cluster has stopped. |
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$anvil->Log->entry({source => $THIS_FILE, line => __LINE__, 'print' => 1, level => 1, key => "job_0313"}); |
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$anvil->Job->update_progress({progress => 5, message => "job_0313"}); |
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} |
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else |
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{ |
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$waiting = 1; |
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if (not $pacemaker_stopped) |
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{ |
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# Stop pacemaker now. |
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$anvil->Log->entry({source => $THIS_FILE, line => __LINE__, 'print' => 1, level => 1, key => "job_0323"}); |
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$anvil->Job->update_progress({progress => 70, message => "job_0323"}); |
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### NOTE: '--force' is needed or else sole-running nodes can't exit |
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### (complains about the loss of quorum) |
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my $shell_call = $anvil->data->{path}{exe}{pcs}." cluster stop --force"; |
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$anvil->Log->variables({source => $THIS_FILE, line => __LINE__, level => 2, list => { shell_call => $shell_call }}); |
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my ($output, $return_code) = $anvil->System->call({shell_call => $shell_call}); |
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$anvil->Log->variables({source => $THIS_FILE, line => __LINE__, level => 2, list => { |
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output => $output, |
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return_code => $return_code, |
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}}); |
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$pacemaker_stopped = 1; |
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$anvil->Log->variables({source => $THIS_FILE, line => __LINE__, level => 2, list => { pacemaker_stopped => $pacemaker_stopped }}); |
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} |
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else |
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{ |
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$anvil->Log->entry({source => $THIS_FILE, line => __LINE__, 'print' => 1, level => 1, key => "job_0324"}); |
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$anvil->Job->update_progress({progress => 80, message => "job_0324"}); |
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} |
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} |
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if ($waiting) |
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{ |
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sleep 5; |
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} |
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} |
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return(0); |
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} |
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# This will migrate or stop |
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sub process_servers |
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{ |
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my ($anvil) = @_; |
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if ($anvil->data->{switches}{'stop-servers'}) |
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{ |
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# Tell the user we're about to shut down servers. |
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$anvil->Log->entry({source => $THIS_FILE, line => __LINE__, 'print' => 1, level => 1, key => "job_0320"}); |
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$anvil->Job->update_progress({progress => 10, message => "job_0320"}); |
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} |
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else |
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{ |
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# Tell the user we're about to migrate servers. |
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$anvil->Log->entry({source => $THIS_FILE, line => __LINE__, 'print' => 1, level => 1, key => "job_0321"}); |
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$anvil->Job->update_progress({progress => 10, message => "job_0321"}); |
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} |
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# Use virsh to check for servers, in case pacemaker lies to us. |
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$anvil->Server->find(); |
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my $progress = 10; |
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my $waiting = 1; |
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my $first_try = 0; |
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my $second_try = 0; |
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my $try_again = 0; |
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my $server_count = keys %{$anvil->data->{server}{location}}; |
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my $progress_steps = $server_count ? int(35 / $server_count) : 70; |
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$anvil->Log->variables({source => $THIS_FILE, line => __LINE__, level => 2, list => { |
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's1:server_count' => $server_count, |
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's2:progress_steps' => $progress_steps, |
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}}); |
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while ($waiting) |
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{ |
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# Is the cluster up? |
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$waiting = 0; |
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my $problem = $anvil->Cluster->parse_cib({debug => 2}); |
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$anvil->Log->variables({source => $THIS_FILE, line => __LINE__, level => 2, list => { problem => $problem }}); |
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if ($problem) |
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{ |
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# Nope. Are we stopping servers? |
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if ($anvil->data->{switches}{'stop-servers'}) |
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{ |
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# Yes, are any servers running (check virsh) |
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foreach my $server_name (sort {$a cmp $b} keys %{$anvil->data->{server}{location}}) |
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{ |
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my $status = $anvil->data->{server}{location}{$server_name}{status}; |
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my $host_name = $anvil->data->{server}{location}{$server_name}{host_name}; |
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$progress += $progress_steps; |
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$anvil->Log->variables({source => $THIS_FILE, line => __LINE__, level => 2, list => { |
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's1:server_name' => $server_name, |
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's2:status' => $status, |
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's3:host_name' => $host_name, |
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's4:progress' => $progress, |
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}}); |
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if ($host_name eq $anvil->Get->host_name) |
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{ |
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# Server is still running. |
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if (($status eq "running") && (not $first_try)) |
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{ |
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# It's running despite the cluster being own, stop it. |
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$anvil->Log->entry({source => $THIS_FILE, line => __LINE__, level => 1, key => "job_0419", variables => { server => $server_name }}); |
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$anvil->Job->update_progress({progress => $progress, message => "job_0419,!!server!".$server_name."!!"}); |
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$anvil->Server->shutdown_virsh({ |
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debug => 2, |
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server => $server_name, |
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wait_time => 1, |
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}); |
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$waiting = 1; |
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$anvil->Log->variables({source => $THIS_FILE, line => __LINE__, level => 2, list => { waiting => $waiting }}); |
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} |
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elsif (($status eq "in shutdown") && ($try_again)) |
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{ |
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# Hit the power button again. |
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$anvil->Log->entry({source => $THIS_FILE, line => __LINE__, level => 1, key => "job_0420", variables => { server => $server_name }}); |
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$anvil->Job->update_progress({progress => $progress, message => "job_0420,!!server!".$server_name."!!"}); |
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$anvil->Server->shutdown_virsh({ |
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debug => 2, |
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server => $server_name, |
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wait_time => 1, |
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}); |
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$waiting = 1; |
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$anvil->Log->variables({source => $THIS_FILE, line => __LINE__, level => 2, list => { waiting => $waiting }}); |
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} |
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} |
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} |
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if ($waiting) |
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{ |
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if (not $first_try) |
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{ |
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$first_try = time; |
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$second_try = $first_try + 120; |
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$anvil->Log->variables({source => $THIS_FILE, line => __LINE__, level => 2, list => { |
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first_try => $first_try, |
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second_try => $second_try, |
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}}); |
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} |
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elsif ($try_again) |
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{ |
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$try_again = 0; |
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$anvil->Log->variables({source => $THIS_FILE, line => __LINE__, level => 2, list => { try_again => $try_again }}); |
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} |
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elsif (($second_try) && (time > $second_try)) |
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{ |
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$try_again = 1; |
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$second_try = 0; |
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$anvil->Log->variables({source => $THIS_FILE, line => __LINE__, level => 2, list => { |
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second_try => $second_try, |
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try_again => $try_again, |
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}}); |
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} |
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} |
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} |
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$anvil->Log->entry({source => $THIS_FILE, line => __LINE__, 'print' => 1, level => 1, key => "job_0313"}); |
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$anvil->Job->update_progress({progress => 80, message => "job_0313"}); |
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} |
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else |
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{ |
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# Loop through the servers running here. |
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my $local_name = $anvil->data->{cib}{parsed}{'local'}{name}; |
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my $peer_name = $anvil->data->{cib}{parsed}{peer}{name}; |
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foreach my $server (sort {$a cmp $b} keys %{$anvil->data->{cib}{parsed}{data}{server}}) |
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{ |
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my $status = $anvil->data->{cib}{parsed}{data}{server}{$server}{status}; |
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my $host_name = $anvil->data->{cib}{parsed}{data}{server}{$server}{host_name}; |
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my $role = $anvil->data->{cib}{parsed}{data}{server}{$server}{role}; |
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my $active = $anvil->data->{cib}{parsed}{data}{server}{$server}{active}; |
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$anvil->Log->variables({source => $THIS_FILE, line => __LINE__, level => 2, list => { |
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's1:server' => $server, |
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's2:status' => $status, |
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's3:host_name' => $host_name, |
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's4:role' => $role, |
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's5:active' => $active, |
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}}); |
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next if lc($role) eq "stopped"; |
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|
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if (lc($role) eq "migrating") |
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{ |
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# No matter what, if a server is migrating, we wait. |
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$waiting = 1; |
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$anvil->Log->variables({source => $THIS_FILE, line => __LINE__, level => 2, list => { waiting => $waiting }}); |
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|
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$anvil->Log->entry({source => $THIS_FILE, line => __LINE__, 'print' => 1, level => 1, key => "job_0315", variables => { server => $server }}); |
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$anvil->Job->update_progress({progress => 20, message => "job_0315,!!server!".$server."!!"}); |
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} |
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elsif ($host_name eq $local_name) |
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{ |
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# Something is running here. |
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$waiting = 1; |
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$anvil->Log->variables({source => $THIS_FILE, line => __LINE__, level => 2, list => { waiting => $waiting }}); |
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|
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# This is ours. How shall we deal with it? |
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if ($anvil->data->{switches}{'stop-servers'}) |
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{ |
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# Have we tried to stop it already? If not, use pcs. If so, |
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# and if it's been more that 60 seconds, use virsh to try |
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# again. |
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if (not exists $anvil->data->{server_shutdown}{$server}) |
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{ |
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# Use PCS. |
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$anvil->Log->entry({source => $THIS_FILE, line => __LINE__, 'print' => 1, level => 1, key => "job_0316", variables => { server => $server }}); |
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$anvil->Job->update_progress({progress => 20, message => "job_0316,!!server!".$server."!!"}); |
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$anvil->Cluster->shutdown_server({ |
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debug => 2, |
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server => $server, |
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'wait' => 0, |
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}); |
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$anvil->data->{server_shutdown}{$server}{pcs_called} = 1; |
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$anvil->data->{server_shutdown}{$server}{virsh_called} = 0; |
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$anvil->data->{server_shutdown}{$server}{call_virsh_at} = time + 120; |
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$anvil->Log->variables({source => $THIS_FILE, line => __LINE__, level => 2, list => { |
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"server_shutdown::${server}::pcs_called" => $anvil->data->{server_shutdown}{$server}{pcs_called}, |
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"server_shutdown::${server}::virsh_called" => $anvil->data->{server_shutdown}{$server}{virsh_called}, |
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"server_shutdown::${server}::call_virsh_at" => $anvil->data->{server_shutdown}{$server}{call_virsh_at}, |
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}}); |
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} |
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elsif ((not $anvil->data->{server_shutdown}{$server}{virsh_called}) && (time > $anvil->data->{server_shutdown}{$server}{call_virsh_at})) |
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{ |
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# Use virsh |
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$anvil->Log->entry({source => $THIS_FILE, line => __LINE__, 'print' => 1, level => 1, key => "job_0317", variables => { server => $server }}); |
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$anvil->Job->update_progress({progress => 20, message => "job_0317,!!server!".$server."!!"}); |
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$anvil->Server->shutdown_virsh({ |
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debug => 2, |
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server => $server, |
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wait_time => 1, |
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}); |
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$anvil->data->{server_shutdown}{$server}{virsh_called} = 1; |
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$anvil->Log->variables({source => $THIS_FILE, line => __LINE__, level => 2, list => { |
|
"server_shutdown::${server}::virsh_called" => $anvil->data->{server_shutdown}{$server}{virsh_called}, |
|
}}); |
|
} |
|
} |
|
else |
|
{ |
|
### TODO: Calculate how many gigs worth of RAM we'll migrate, |
|
### and advance the "progress" by the percentage each |
|
### server's RAM represents of the total |
|
# Migrate the servers. |
|
$anvil->Log->entry({source => $THIS_FILE, line => __LINE__, 'print' => 1, level => 1, key => "job_0318", variables => { |
|
server => $server, |
|
node => $peer_name, |
|
}}); |
|
$anvil->Job->update_progress({progress => 20, message => "job_0318,!!server!".$server."!!,!!node!".$peer_name."!!"}); |
|
$anvil->Cluster->migrate_server({ |
|
server => $server, |
|
node => $peer_name, |
|
'wait' => 1, |
|
}); |
|
} |
|
} |
|
} |
|
} |
|
if ($waiting) |
|
{ |
|
sleep 5; |
|
} |
|
} |
|
|
|
$anvil->Log->entry({source => $THIS_FILE, line => __LINE__, 'print' => 1, level => 1, key => "job_0319"}); |
|
$anvil->Job->update_progress({progress => 30, message => "job_0319"}); |
|
|
|
return(0); |
|
} |
|
|
|
# This watches DRBD and waits for us to not be SyncSource. |
|
sub wait_on_drbd |
|
{ |
|
my ($anvil) = @_; |
|
|
|
$anvil->Log->entry({source => $THIS_FILE, line => __LINE__, 'print' => 1, level => 1, key => "job_0322"}); |
|
$anvil->Job->update_progress({progress => 40, message => "job_0322"}); |
|
my $short_host_name = $anvil->Get->short_host_name(); |
|
my $waiting = 1; |
|
while ($waiting) |
|
{ |
|
# (Re)fresh my view of the storage. |
|
$waiting = 0; |
|
$anvil->DRBD->get_status({debug => 2}); |
|
|
|
# Now check to see if anything is sync'ing. |
|
foreach my $server_name (sort {$a cmp $b} keys %{$anvil->data->{drbd}{status}{$short_host_name}{resource}}) |
|
{ |
|
foreach my $peer_name (sort {$a cmp $b} keys %{$anvil->data->{drbd}{status}{$short_host_name}{resource}{$server_name}{connection}}) |
|
{ |
|
$anvil->Log->variables({source => $THIS_FILE, line => __LINE__, level => 2, list => { peer_name => $peer_name }}); |
|
foreach my $volume (sort {$a cmp $b} %{$anvil->data->{drbd}{status}{$short_host_name}{resource}{$server_name}{connection}{$peer_name}{volume}}) |
|
{ |
|
next if not exists $anvil->data->{drbd}{status}{$short_host_name}{resource}{$server_name}{connection}{$peer_name}{volume}{$volume}{'replication-state'}; |
|
my $replication_state = $anvil->data->{drbd}{status}{$short_host_name}{resource}{$server_name}{connection}{$peer_name}{volume}{$volume}{'replication-state'}; |
|
$anvil->Log->variables({source => $THIS_FILE, line => __LINE__, level => 2, list => { |
|
volume => $volume, |
|
replication_state => $replication_state, |
|
}}); |
|
|
|
if ($replication_state =~ /SyncSource/i) |
|
{ |
|
$waiting = 1; |
|
$anvil->Log->variables({source => $THIS_FILE, line => __LINE__, level => 2, list => { waiting => $waiting }}); |
|
|
|
$anvil->Log->entry({source => $THIS_FILE, line => __LINE__, 'print' => 1, level => 1, key => "job_0312", variables => { |
|
peer_host => $peer_name, |
|
resource => $server_name, |
|
volume => $volume, |
|
}}); |
|
$anvil->Job->update_progress({progress => 50, message => "job_0312,!!peer_host!".$peer_name."!!,!!resource!".$server_name."!!,!!volume!".$volume."!!"}); |
|
} |
|
} |
|
} |
|
} |
|
if ($waiting) |
|
{ |
|
sleep 10; |
|
} |
|
} |
|
|
|
# All servers should be down now, so stop DRBD. |
|
$anvil->Log->entry({source => $THIS_FILE, line => __LINE__, 'print' => 1, level => 1, key => "job_0314"}); |
|
$anvil->Job->update_progress({progress => 60, message => "job_0314"}); |
|
|
|
my $shell_call = $anvil->data->{path}{exe}{drbdadm}." down all"; |
|
$anvil->Log->variables({source => $THIS_FILE, line => __LINE__, level => 2, list => { shell_call => $shell_call }}); |
|
my ($output, $return_code) = $anvil->System->call({shell_call => $shell_call}); |
|
$anvil->Log->variables({source => $THIS_FILE, line => __LINE__, level => 2, list => { |
|
output => $output, |
|
return_code => $return_code, |
|
}}); |
|
|
|
return(0); |
|
}
|
|
|