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#!/usr/bin/perl |
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# |
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# This is the resource agent used to manage servers on the Anvil! Intelligent Availability platform. |
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# |
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# License: GNU General Public License (GPL) v2+ |
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# (c) 1997-2018 - Alteeve's Niche! Inc. |
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# |
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# WARNING: This is a pretty purpose-specific resource agent. No effort was made to test this on an rgmanager |
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# cluster or on any configuration outside how the Anvil! m3 uses it. If you plan to adapt it to |
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# another purpose, let us know and we'll try to help. |
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# |
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# Based on: https://github.com/ClusterLabs/resource-agents/blob/master/doc/dev-guides/ra-dev-guide.asc |
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# |
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# Error types from pacemaker's perspective; |
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# |
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# - Soft Error - Unless specifically configured otherwise, pacemaker will attempt to recover a resource |
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# in-place - usually by restarting the resource on the same node. |
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# - Hard Error - Unless specifically configured otherwise, pacemaker will attempt to recover a resource |
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# which failed with this error by restarting the resource on a different node. |
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# - Fatal Error - This is a cluster-wide error, it would make no sense to recover such a resource on a |
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# different node, let alone in-place. When a resource fails with this error, Pacemaker will |
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# attempt to shut down the resource, and wait for administrator intervention. |
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# |
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# Exit codes; |
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# 0 - OCF_SUCCESS |
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# - The action completed successfully. This is the expected return code for any successful start, stop, |
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# migrate_to, meta_data, help, and usage action. |
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# - For monitor, however, a modified convention applies: |
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# - If the server is running we return, OCF_SUCCESS. If not running and gracefully stopped or migrated |
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# off, return OCF_NOT_RUNNING. |
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# |
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# 1 - OCF_ERR_GENERIC |
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# - The action returned a generic error. This is used only when none of the more specific error codes, |
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# defined below, accurately describes the problem. |
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# - Pacemaker interprets this exit code as a soft error. |
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# |
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# 2 - OCF_ERR_ARGS |
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# - The resource’s configuration is not valid on this machine. This can happen if the serve fails to boot |
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# because of a missing bridge, for example. |
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# |
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# 3 - OCF_ERR_UNIMPLEMENTED |
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# - The resource agent was instructed to execute an action that we do not implement. |
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# - Not all resource agent actions are mandatory. We don't implement 'promote' or 'demote'. We do implement |
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# 'migrate_to', 'migrate_from', and 'notify'. If we're misconfigured as a master/slave resource, for |
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# example, then will alert the user about this misconfiguration by returning OCF_ERR_UNIMPLEMENTED. |
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# |
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# 4 - OCF_ERR_PERM |
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# - The action failed due to insufficient permissions. This may be due to a node not being able to open a |
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# definition file or resource config. |
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# - Pacemaker interprets this exit code as a hard error. |
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# |
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# 5 - OCF_ERR_INSTALLED |
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# - The action failed because a required component is missing on the node where the action was executed. |
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# This may be due to a required binary not being executable, or a the DRBD resource config file not |
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# existing. |
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# - Pacemaker interprets this exit code as a hard error. |
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# |
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# 6 - OCF_ERR_CONFIGURED |
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# - The action failed because the user misconfigured the resource in pacemaker. For example, the user may |
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# have configured an alphanumeric string for a parameter that really should be an integer. |
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# - Pacemaker interprets this exit code as a fatal error. |
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# |
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# 7 - OCF_NOT_RUNNING |
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# - The resource was found not to be running. This is an exit code that may be returned by the monitor |
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# action exclusively. Note that this implies that the resource has either gracefully shut down, or has |
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# never been started. |
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# |
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# 8 - OCF_RUNNING_MASTER |
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# 9 - OCF_FAILED_MASTER |
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# - These OCF exit codes are not used here. |
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# |
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# NOTE: We don't use Anvil::Tools to keep overhead low and to keep this agent independent as possible. |
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use strict; |
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use warnings; |
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use Anvil::Tools; |
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use XML::Simple; |
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use JSON; |
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use Math::BigInt; |
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use Data::Dumper; |
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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 $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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# NOTE: Setting 'log_level' and 'log_secure' here will get overridden in the main lopp. Use the Log methods |
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# in the loop as well to override defaults in code. |
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my $anvil = Anvil::Tools->new(); |
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$anvil->Log->level({set => 2}); |
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$anvil->Log->secure({set => 1}); |
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### Read or Set the environment variables |
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# This is the name of the server we're managing. # Example values: |
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$anvil->data->{environment}{OCF_RESKEY_name} = defined $ENV{OCF_RESKEY_name} ? $ENV{OCF_RESKEY_name} : ""; # srv01-c7 |
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# This is our node name |
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$anvil->data->{environment}{OCF_RESKEY_CRM_meta_on_node} = defined $ENV{OCF_RESKEY_CRM_meta_on_node} ? $ENV{OCF_RESKEY_CRM_meta_on_node} : ""; # el8-a01n01.digimer.ca |
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# This says "UUID", but it's the node ID. |
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$anvil->data->{environment}{OCF_RESKEY_CRM_meta_on_node_uuid} = defined $ENV{OCF_RESKEY_CRM_meta_on_node_uuid} ? $ENV{OCF_RESKEY_CRM_meta_on_node_uuid} : ""; # 1 |
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# This is the timeout for the called action in millisecond. |
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$anvil->data->{environment}{OCF_RESKEY_CRM_meta_timeout} = defined $ENV{OCF_RESKEY_CRM_meta_timeout} ? $ENV{OCF_RESKEY_CRM_meta_timeout} : ""; # 20000 |
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# If this is set, we'll bump our log level as well. |
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$anvil->data->{environment}{PCMK_debug} = defined $ENV{PCMK_debug} ? $ENV{PCMK_debug} : ""; # 0 |
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# These are other variables that are set, but we don't currently care about them |
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$anvil->data->{environment}{OCF_EXIT_REASON_PREFIX} = defined $ENV{OCF_EXIT_REASON_PREFIX} ? $ENV{OCF_EXIT_REASON_PREFIX} : ""; # ocf-exit-reason: |
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$anvil->data->{environment}{OCF_RA_VERSION_MAJOR} = defined $ENV{OCF_RA_VERSION_MAJOR} ? $ENV{OCF_RA_VERSION_MAJOR} : ""; # 1 |
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$anvil->data->{environment}{OCF_RA_VERSION_MINOR} = defined $ENV{OCF_RA_VERSION_MINOR} ? $ENV{OCF_RA_VERSION_MINOR} : ""; # 0 |
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$anvil->data->{environment}{OCF_RESKEY_crm_feature_set} = defined $ENV{OCF_RESKEY_crm_feature_set} ? $ENV{OCF_RESKEY_crm_feature_set} : ""; # 3.0.12 |
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$anvil->data->{environment}{OCF_RESOURCE_INSTANCE} = defined $ENV{OCF_RESOURCE_INSTANCE} ? $ENV{OCF_RESOURCE_INSTANCE} : ""; # srv01-c7 |
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$anvil->data->{environment}{OCF_RESOURCE_PROVIDER} = defined $ENV{OCF_RESOURCE_PROVIDER} ? $ENV{OCF_RESOURCE_PROVIDER} : ""; # alteeve |
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$anvil->data->{environment}{OCF_RESOURCE_TYPE} = defined $ENV{OCF_RESOURCE_TYPE} ? $ENV{OCF_RESOURCE_TYPE} : ""; # server |
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$anvil->data->{environment}{OCF_ROOT} = defined $ENV{OCF_ROOT} ? $ENV{OCF_ROOT} : ""; # /usr/lib/ocf |
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# These are set during a migration |
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$anvil->data->{environment}{OCF_RESKEY_CRM_meta_migrate_source} = defined $ENV{OCF_RESKEY_CRM_meta_migrate_source} ? $ENV{OCF_RESKEY_CRM_meta_migrate_source} : ""; # el8-a01n01.digimer.ca |
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$anvil->data->{environment}{OCF_RESKEY_CRM_meta_migrate_target} = defined $ENV{OCF_RESKEY_CRM_meta_migrate_target} ? $ENV{OCF_RESKEY_CRM_meta_migrate_target} : ""; # el8-a01n02.digimer.ca |
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$anvil->data->{environment}{OCF_RESKEY_CRM_meta_record_pending} = defined $ENV{OCF_RESKEY_CRM_meta_record_pending} ? $ENV{OCF_RESKEY_CRM_meta_record_pending} : ""; # true |
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# If pacemaker is in debug, so are we, |
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if ($anvil->data->{environment}{PCMK_debug}) |
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{ |
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$anvil->Log->level({set => 3}); |
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} |
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# Get any command line switches. |
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$anvil->Get->switches; |
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# Something for the logs |
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if ((not $anvil->data->{switches}{metadaata}) and (not $anvil->data->{switches}{'meta-data'})) |
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{ |
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$anvil->Log->entry({source => $THIS_FILE, line => __LINE__, 'print' => 1, level => 3, key => "log_0298"}); |
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} |
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### TEST: to be removed later |
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if ($anvil->data->{switches}{test1}) |
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{ |
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$anvil->data->{environment}{OCF_RESKEY_name} = "test_server"; |
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$anvil->data->{environment}{OCF_RESKEY_CRM_meta_timeout} = 20000; |
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$anvil->data->{environment}{OCF_RESKEY_CRM_meta_on_node} = "el8-a01n01.digimer.ca"; |
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$anvil->data->{environment}{OCF_RESKEY_CRM_meta_migrate_source} = "el8-a01n01.digimer.ca"; |
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$anvil->data->{environment}{OCF_RESKEY_CRM_meta_migrate_target} = "el8-a01n02.digimer.ca"; |
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#print "Running test 1; Migrate: [".$anvil->data->{environment}{OCF_RESKEY_name}."] from: [".$anvil->data->{environment}{OCF_RESKEY_CRM_meta_migrate_source}."] to: [".$anvil->data->{environment}{OCF_RESKEY_CRM_meta_migrate_target}."]\n"; |
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} |
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if ($anvil->data->{switches}{test2}) |
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{ |
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$anvil->data->{environment}{OCF_RESKEY_name} = "test_server"; |
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$anvil->data->{environment}{OCF_RESKEY_CRM_meta_timeout} = 20000; |
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$anvil->data->{environment}{OCF_RESKEY_CRM_meta_on_node} = "el8-a01n02.digimer.ca"; |
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$anvil->data->{environment}{OCF_RESKEY_CRM_meta_migrate_source} = "el8-a01n02.digimer.ca"; |
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$anvil->data->{environment}{OCF_RESKEY_CRM_meta_migrate_target} = "el8-a01n01.digimer.ca"; |
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#print "Running test 2; Migrate: [".$anvil->data->{environment}{OCF_RESKEY_name}."] from: [".$anvil->data->{environment}{OCF_RESKEY_CRM_meta_migrate_source}."] to: [".$anvil->data->{environment}{OCF_RESKEY_CRM_meta_migrate_target}."]\n"; |
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} |
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if ($anvil->data->{switches}{test3}) |
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{ |
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$anvil->data->{environment}{OCF_RESKEY_name} = "test_server"; |
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$anvil->data->{environment}{OCF_RESKEY_CRM_meta_on_node} = "el8-a01n01.digimer.ca"; |
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#print "Running test 3; Boot: [".$anvil->data->{environment}{OCF_RESKEY_name}."] locally.\n"; |
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} |
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if ($anvil->data->{switches}{test4}) |
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{ |
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$anvil->data->{environment}{OCF_RESKEY_name} = "test_server"; |
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$anvil->data->{environment}{OCF_RESKEY_CRM_meta_on_node} = "el8-a01n01.digimer.ca"; |
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#print "Running test 3; Shut down: [".$anvil->data->{environment}{OCF_RESKEY_name}."] locally.\n"; |
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} |
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# This is for debugging. |
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if (($anvil->data->{switches}{monitor}) or |
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($anvil->data->{switches}{status}) or |
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($anvil->data->{switches}{'meta-data'}) or |
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($anvil->data->{switches}{metadaata})) |
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{ |
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show_environment($anvil, 3); |
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} |
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else |
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{ |
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show_environment($anvil, 3); |
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} |
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### What are we being asked to do? |
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# start - Starts the resource. |
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# stop - Shuts down the resource. |
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# monitor - (status aliases here) Queries the resource for its state. |
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# meta-data - Dumps the resource agent metadata. |
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# promote - Turns a resource into the Master role (Master/Slave resources only). |
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# demote - Turns a resource into the Slave role (Master/Slave resources only). |
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# migrate_to - migration target |
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# migrate_from - Implement live migration of resources. |
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# validate-all - Validates a resource’s configuration. |
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# help - (usage maps here) Displays a usage message when the resource agent is invoked from the command line, rather than by the cluster manager. |
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# notify - Inform resource about changes in state of other clones. |
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if ($anvil->data->{switches}{start}) |
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{ |
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# Start the server |
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start_server($anvil); |
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} |
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elsif ($anvil->data->{switches}{stop}) |
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{ |
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# Stop the server |
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stop_server($anvil); |
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} |
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elsif (($anvil->data->{switches}{monitor}) or ($anvil->data->{switches}{status})) |
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{ |
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# Report the status of the server. |
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server_status($anvil); |
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} |
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elsif (($anvil->data->{switches}{metadaata}) or ($anvil->data->{switches}{'meta-data'})) |
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{ |
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show_metadata($anvil); |
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} |
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elsif ($anvil->data->{switches}{promote}) |
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{ |
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# We don't support this, so we return OCF_ERR_UNIMPLEMENTED (3) |
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$anvil->Log->entry({source => $THIS_FILE, line => __LINE__, 'print' => 1, level => 1, key => "log_0299", variables => { server => $anvil->data->{environment}{OCF_RESKEY_name} }}); |
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$anvil->nice_exit({exit_code => 3}); |
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} |
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elsif ($anvil->data->{switches}{demote}) |
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{ |
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# We don't support this, so we return OCF_ERR_UNIMPLEMENTED (3) |
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$anvil->Log->entry({source => $THIS_FILE, line => __LINE__, 'print' => 1, level => 1, key => "log_0300", variables => { server => $anvil->data->{environment}{OCF_RESKEY_name} }}); |
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$anvil->nice_exit({exit_code => 3}); |
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} |
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elsif (($anvil->data->{switches}{migrate_to}) or ($anvil->data->{switches}{migrate_from})) |
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{ |
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# We don't support this, so we return OCF_ERR_UNIMPLEMENTED (3) |
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migrate_server($anvil); |
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} |
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elsif ($anvil->data->{switches}{'validate-all'}) |
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{ |
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# Validate our local config and setup. |
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validate_all($anvil); |
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$anvil->nice_exit({exit_code => 0}); |
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} |
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elsif (($anvil->data->{switches}{help}) or ($anvil->data->{switches}{usage})) |
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{ |
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# Show the usage information |
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show_usage($anvil); |
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$anvil->nice_exit({exit_code => 0}); |
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} |
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elsif ($anvil->data->{switches}{notify}) |
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{ |
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# We don't implement this |
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$anvil->Log->entry({source => $THIS_FILE, line => __LINE__, 'print' => 1, level =>0, key => "log_0301"}); |
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$anvil->nice_exit({exit_code => 3}); |
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} |
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else |
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{ |
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# We were called in some unexpected way. Log an error, show usage and exit. |
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$anvil->Log->entry({source => $THIS_FILE, line => __LINE__, 'print' => 1, level =>0, key => "log_0302"}); |
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show_environment($anvil, 0); |
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$anvil->nice_exit({exit_code => 1}); |
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} |
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# If we hit here, something very wrong happened. |
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$anvil->nice_exit({exit_code => 255}); |
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############################################################################################################# |
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# Functions # |
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############################################################################################################# |
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=cut |
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STATES |
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The State field lists what state each domain is currently in. A domain can be in one of the following |
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possible states: |
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running - The domain is currently running on a CPU |
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idle - The domain is idle, and not running or runnable. This can be caused because the domain is |
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waiting on IO (a traditional wait state) or has gone to sleep because there was nothing else |
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for it to do. |
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paused - The domain has been paused, usually occurring through the administrator running virsh suspend. |
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When in a paused state the domain will still consume allocated resources like memory, but will |
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not be eligible for scheduling by the hypervisor. |
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in shutdown - The domain is in the process of shutting down, i.e. the guest operating system has been |
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notified and should be in the process of stopping its operations gracefully. |
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shut off - The domain is not running. Usually this indicates the domain has been shut down completely, or |
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has not been started. |
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crashed - The domain has crashed, which is always a violent ending. Usually this state can only occur if |
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the domain has been configured not to restart on crash. |
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pmsuspended - The domain has been suspended by guest power management, e.g. entered into s3 state. |
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=cut |
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# This boots the server if possible. |
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sub start_server |
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{ |
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my ($anvil) = @_; |
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# Start procedure; |
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# 1. Read the XML definition file and find the backing storage and bridges. Soft error if read fails. |
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# 2. Make sure the name matches. |
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# 3. Make sure we have enough free RAM. |
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# 4. Make sure the emulator exists (can be an issue after migrating from an different gen Anvil!). |
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# 5.1. Make sure optical drives with mounted data have the disk present. Soft error if not. |
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# 5.2. Find any backing DRBD devices |
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# 6. For each DRBD device; |
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# 6.1. Make sure the backing LV is ACTIVE. Soft error if not. |
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# 6.2. Check if the drbd resource is up. If not, up it. |
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# 6.3. Make sure the backing disk is UpToDate. Soft error if not. |
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# 6.4. Make sure the backing device is 'Connected' or 'Connecting'. Call a connect if not. |
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# 7. Make sure all bridges exist and soft error if not. |
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# 8. Start the server. |
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my $server = $anvil->data->{environment}{OCF_RESKEY_name}; |
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$anvil->Log->entry({source => $THIS_FILE, line => __LINE__, 'print' => 1, level => 2, key => "log_0303", variables => { server => $server }}); |
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# Make sure things are sane. |
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validate_all($anvil); |
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# Is the server already running somewhere? |
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find_server($anvil); |
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#$anvil->Server->find({server => $server}); |
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### TODO: |
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my $host = $anvil->_short_hostname; |
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print "I am: [".$anvil->data->{drbd}{config}{$host}{host}."]. my peer is: [".$anvil->data->{drbd}{config}{$host}{peer}."]\n"; |
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die; |
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# If we're still alive, then we didn't see the server in the list of running servers, which is really weird. |
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$anvil->Log->entry({source => $THIS_FILE, line => __LINE__, 'print' => 1, level => 0, priority => "err", key => "log_0311", variables => { server => $server }}); |
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$anvil->nice_exit({exit_code => 1}); |
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} |
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# This uses the DRBD information to find other peers and see if the server is running on them. |
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sub find_server |
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{ |
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my ($anvil) = @_; |
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my $server = $anvil->data->{environment}{OCF_RESKEY_name}; |
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my $host = $anvil->_short_hostname; |
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$anvil->Log->entry({source => $THIS_FILE, line => __LINE__, 'print' => 1, level => 2, key => "log_0415", variables => { server => $server }}); |
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foreach my $ip_address (sort {$a cmp $b} keys %{$anvil->data->{drbd}{config}{$host}{ip_addresses}}) |
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{ |
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$anvil->Log->variables({source => $THIS_FILE, line => __LINE__, level => 2, list => { ip_address => $ip_address }}); |
|
|
$anvil->Server->find({ |
|
|
debug => 3, |
|
|
target => $ip_address, |
|
|
remote_user => "root", |
|
|
}); |
|
|
} |
|
|
|
|
|
foreach my $this_server (sort {$a cmp $b} keys %{$anvil->data->{server}{location}}) |
|
|
{ |
|
|
my $status = $anvil->data->{server}{location}{$this_server}{status}; |
|
|
my $host = $anvil->data->{server}{location}{$this_server}{host}; |
|
|
$anvil->Log->variables({source => $THIS_FILE, line => __LINE__, level => 2, list => { |
|
|
this_server => $this_server, |
|
|
status => $status, |
|
|
host => $host, |
|
|
}}); |
|
|
} |
|
|
if ((exists $anvil->data->{server}{location}{$server}) && ($anvil->data->{server}{location}{$server}{host})) |
|
|
{ |
|
|
# The server is running. If it is running here, exit with success. If it's running elsewhere, |
|
|
# exit with a failure. |
|
|
my $status = $anvil->data->{server}{location}{$server}{status}; |
|
|
my $host = $anvil->data->{server}{location}{$server}{host}; |
|
|
$anvil->Log->variables({source => $THIS_FILE, line => __LINE__, level => 2, list => { |
|
|
status => $status, |
|
|
host => $host, |
|
|
}}); |
|
|
|
|
|
if ($host eq $anvil->_hostname) |
|
|
{ |
|
|
# Already running, we're good, and we're done. |
|
|
$anvil->Log->entry({source => $THIS_FILE, line => __LINE__, 'print' => 1, level => 2, key => "log_0416", variables => { server => $server }}); |
|
|
$anvil->nice_exit({exit_code => 0}); |
|
|
} |
|
|
elsif ($host =~ /dr(\d+)$/) |
|
|
{ |
|
|
# The server is running elsewhere. If the peer host is DR, exit with |
|
|
# OCF_ERR_CONFIGURED (6) so that pacemaker doesn't try to also start the server on |
|
|
# the other node, because we don't know the state of it here. |
|
|
$anvil->Log->entry({source => $THIS_FILE, line => __LINE__, 'print' => 1, level => 0, priority => "err", key => "log_0417", variables => { |
|
|
server => $server, |
|
|
host => $host, |
|
|
}}); |
|
|
$anvil->nice_exit({exit_code => 6}); |
|
|
} |
|
|
else |
|
|
{ |
|
|
# It looks like it's running on the peer. So we'll exit OCF_ERR_INSTALLED (5) to tell |
|
|
# pacemaker to try to start it on our peer. |
|
|
$anvil->Log->entry({source => $THIS_FILE, line => __LINE__, 'print' => 1, level => 0, priority => "err", key => "log_0418", variables => { |
|
|
server => $server, |
|
|
host => $host, |
|
|
}}); |
|
|
$anvil->nice_exit({exit_code => 6}); |
|
|
} |
|
|
} |
|
|
|
|
|
return(0); |
|
|
} |
|
|
|
|
|
# This shuts down the server if possible. |
|
|
sub stop_server |
|
|
{ |
|
|
my ($anvil) = @_; |
|
|
|
|
|
# Stopping the server is simply a question of "is the server running?" and, if so, stop it. Once |
|
|
# stopped, we stop the DRBD resource on both nodes. |
|
|
my $server = $anvil->data->{environment}{OCF_RESKEY_name}; |
|
|
|
|
|
$anvil->nice_exit({exit_code => 0}); |
|
|
} |
|
|
|
|
|
# This checks the status of the server. |
|
|
sub server_status |
|
|
{ |
|
|
my ($anvil) = @_; |
|
|
|
|
|
# If the named server is running, return OCF_SUCCESS (0), otherwise OCF_NOT_RUNNING (7). If the |
|
|
# server is failed, return OCF_ERR_GENERIC (1). |
|
|
my $state = ""; |
|
|
my $server = $anvil->data->{environment}{OCF_RESKEY_name}; |
|
|
|
|
|
### NOTE: When pacemaker is first starting, virsh won't be up right away. So if we get a return code |
|
|
### of '1', we'll try again up to 50% of 'environment::OCF_RESKEY_CRM_meta_timeout'. |
|
|
if (not $anvil->data->{environment}{OCF_RESKEY_CRM_meta_timeout}) |
|
|
{ |
|
|
# Set a sane default of 20 seconds. |
|
|
$anvil->data->{environment}{OCF_RESKEY_CRM_meta_timeout} = 20000; |
|
|
$anvil->Log->entry({source => $THIS_FILE, line => __LINE__, 'print' => 1, level => 1, priority => "warn", key => "log_0331", variables => { timeout => $anvil->data->{environment}{OCF_RESKEY_CRM_meta_timeout} }}); |
|
|
} |
|
|
|
|
|
$anvil->nice_exit({exit_code => 0}); |
|
|
} |
|
|
|
|
|
# Migrate the server |
|
|
sub migrate_server |
|
|
{ |
|
|
my ($anvil) = @_; |
|
|
|
|
|
# If we were given 'migrate_to', we need to make sure the storage is UpToDate on the peer for all |
|
|
# backing resources. We can't check the target's bridges, but the migation will fail if one is |
|
|
# missing. |
|
|
# If we're given 'migrate_from', we're pulling the server towards us, so we can check both brdiges |
|
|
# and storage. |
|
|
my $server = $anvil->data->{environment}{OCF_RESKEY_name}; |
|
|
my $source = $anvil->data->{environment}{OCF_RESKEY_CRM_meta_migrate_source}; |
|
|
my $target = $anvil->data->{environment}{OCF_RESKEY_CRM_meta_migrate_target}; |
|
|
$anvil->Log->variables({source => $THIS_FILE, line => __LINE__, level => 2, list => { |
|
|
server => $server, |
|
|
source => $source, |
|
|
target => $target, |
|
|
}}); |
|
|
|
|
|
|
|
|
# If we made it here, we succeeded. |
|
|
$anvil->Log->entry({source => $THIS_FILE, line => __LINE__, 'print' => 1, level => 1, key => "log_0360"}); |
|
|
$anvil->nice_exit({exit_code => 0}); |
|
|
} |
|
|
|
|
|
# Validation checks that we have the definition XML, resource config and that needed apps are installed. |
|
|
sub validate_all |
|
|
{ |
|
|
my ($anvil) = @_; |
|
|
$anvil->Log->entry({source => $THIS_FILE, line => __LINE__, 'print' => 1, level => 2, key => "log_0361"}); |
|
|
|
|
|
### TODO: When we have actual Anvil! systems, connect to the peers (nodes / DR) for this host and see |
|
|
### if the server is running elsewhere. |
|
|
|
|
|
# Read in an parse the server's XML. |
|
|
$anvil->System->check_storage({debug => 2}); |
|
|
$anvil->Server->get_status({debug => 2, server => $anvil->data->{environment}{OCF_RESKEY_name}}); |
|
|
|
|
|
# Is the name in the definition file what we expect (and did we read the XML data at all)? |
|
|
validate_name($anvil); |
|
|
|
|
|
# Make sure the emulator it wants is the one we have. |
|
|
validate_emulator($anvil); |
|
|
|
|
|
# These tests are only needed if we're about to boot the server |
|
|
if (($anvil->data->{switches}{start}) or ($anvil->data->{switches}{migrate_from})) |
|
|
{ |
|
|
# Check that we have enough RAM. |
|
|
validate_ram($anvil); |
|
|
} |
|
|
|
|
|
# Validate bridges |
|
|
validate_bridges($anvil); |
|
|
|
|
|
# Validate storage (Disks and optical media) |
|
|
validate_storage($anvil); |
|
|
|
|
|
return(0); |
|
|
} |
|
|
|
|
|
# This ensures that the bridges the server connects to exist on this node. |
|
|
sub validate_bridges |
|
|
{ |
|
|
my ($anvil) = @_; |
|
|
|
|
|
# Get my bridge list |
|
|
$anvil->System->get_bridges({debug => 2}); |
|
|
|
|
|
# Find the Optical drives and DRBD devices. |
|
|
my $server = $anvil->data->{environment}{OCF_RESKEY_name}; |
|
|
foreach my $mac (sort {$a cmp $b} keys %{$anvil->data->{server}{$server}{from_disk}{device}{interface}}) |
|
|
{ |
|
|
# See if we have this bridge |
|
|
my $found = 0; |
|
|
my $bridge = $anvil->data->{server}{$server}{from_disk}{device}{interface}{$mac}{bridge}; |
|
|
$anvil->Log->variables({source => $THIS_FILE, line => __LINE__, level => 2, list => { bridge => $bridge }}); |
|
|
foreach my $interface_name (sort {$a cmp $b} keys %{$anvil->data->{'local'}{network}{bridges}{bridge}}) |
|
|
{ |
|
|
$anvil->Log->variables({source => $THIS_FILE, line => __LINE__, level => 2, list => { interface_name => $interface_name }}); |
|
|
if ((exists $anvil->data->{'local'}{network}{bridges}{bridge}{$interface_name}) && ($anvil->data->{'local'}{network}{bridges}{bridge}{$interface_name}{found})) |
|
|
{ |
|
|
$found = 1; |
|
|
$anvil->Log->variables({source => $THIS_FILE, line => __LINE__, level => 2, list => { found => $found }}); |
|
|
last; |
|
|
} |
|
|
} |
|
|
|
|
|
if ($found) |
|
|
{ |
|
|
$anvil->Log->entry({source => $THIS_FILE, line => __LINE__, 'print' => 1, level => 3, key => "log_0368", variables => { bridge => $bridge }}); |
|
|
} |
|
|
else |
|
|
{ |
|
|
# Missing bridge. |
|
|
$anvil->Log->entry({source => $THIS_FILE, line => __LINE__, 'print' => 1, level => 0, priority => "err", key => "log_0369", variables => { bridge => $bridge }}); |
|
|
$anvil->nice_exit({exit_code => 5}); |
|
|
} |
|
|
} |
|
|
$anvil->Log->entry({source => $THIS_FILE, line => __LINE__, 'print' => 1, level => 2, key => "log_0366"}); |
|
|
|
|
|
return(0); |
|
|
} |
|
|
|
|
|
# This looks up the disks and optical media connected to this server. |
|
|
sub validate_storage |
|
|
{ |
|
|
my ($anvil) = @_; |
|
|
|
|
|
### TODO: When checking on a running server, use 'from_memory'. |
|
|
my $server = $anvil->data->{environment}{OCF_RESKEY_name}; |
|
|
my $source = "from_disk"; |
|
|
if (exists $anvil->data->{server}{$server}{from_memory}) |
|
|
{ |
|
|
$source = "from_memory"; |
|
|
} |
|
|
$anvil->Log->variables({source => $THIS_FILE, line => __LINE__, level => 2, list => { |
|
|
server => $server, |
|
|
source => $source, |
|
|
}}); |
|
|
|
|
|
### TODO: If we're called with a status and find an ISO file missing and eject it instead of failing. |
|
|
### For now, we just fault out. |
|
|
# Do the optical discs in the drive exist? If not, we'll eject it if we're about to boot and fail if |
|
|
# we're about to migrate. We skip this check if we're migrating off or shutting down the server. |
|
|
if ((exists $anvil->data->{server}{$server}{$source}{device}{cdrom}) && (not $anvil->data->{switches}{migrate_to}) && (not $anvil->data->{switches}{stop})) |
|
|
{ |
|
|
foreach my $device_target (sort {$a cmp $b} keys %{$anvil->data->{server}{$server}{$source}{device}{cdrom}{target}}) |
|
|
{ |
|
|
if ($anvil->data->{server}{$server}{$source}{device}{cdrom}{target}{$device_target}{path}) |
|
|
{ |
|
|
my $file = $anvil->data->{server}{$server}{$source}{device}{cdrom}{target}{$device_target}{path}; |
|
|
$anvil->Log->variables({source => $THIS_FILE, line => __LINE__, level => 2, list => { file => $file }}); |
|
|
if (not -e $file) |
|
|
{ |
|
|
# It doesn't exist. Exit with OCF_ERR_INSTALLED (5). |
|
|
$anvil->Log->entry({source => $THIS_FILE, line => __LINE__, 'print' => 1, level => 0, priority => "err", key => "log_0398", variables => { file => $file }}); |
|
|
$anvil->nice_exit({exit_code => 5}); |
|
|
} |
|
|
elsif (not -r $file) |
|
|
{ |
|
|
# We can't read it. Exit with OCF_ERR_PERM (4). |
|
|
$anvil->Log->entry({source => $THIS_FILE, line => __LINE__, 'print' => 1, level => 0, priority => "err", key => "log_0399", variables => { file => $file }}); |
|
|
$anvil->nice_exit({exit_code => 4}); |
|
|
} |
|
|
else |
|
|
{ |
|
|
# We're OK. |
|
|
$anvil->Log->entry({source => $THIS_FILE, line => __LINE__, 'print' => 0, level => 2, key => "log_0400", variables => { file => $file }}); |
|
|
} |
|
|
} |
|
|
} |
|
|
} |
|
|
|
|
|
# Verify DRBD devices now |
|
|
validate_storage_drbd($anvil); |
|
|
$anvil->Log->entry({source => $THIS_FILE, line => __LINE__, 'print' => 1, level => 2, key => "log_0367"}); |
|
|
|
|
|
return(0); |
|
|
} |
|
|
|
|
|
# THis makes sure that the needed backing DRBD devices are on this node. If so, and if they are not up, they |
|
|
# will be brought up. If that fails, it errors out. |
|
|
sub validate_storage_drbd |
|
|
{ |
|
|
my ($anvil) = @_; |
|
|
|
|
|
# Now check storage. |
|
|
my $server = $anvil->data->{environment}{OCF_RESKEY_name}; |
|
|
my $source = "from_disk"; |
|
|
my $host = $anvil->_short_hostname; |
|
|
|
|
|
# Did I find a resource for each disk? |
|
|
foreach my $device_path (sort {$a cmp $b} keys %{$anvil->data->{server}{$server}{device}}) |
|
|
{ |
|
|
$anvil->Log->variables({source => $THIS_FILE, line => __LINE__, level => 2, list => { |
|
|
"server::${server}::device::${device_path}::resource" => $anvil->data->{server}{$server}{device}{$device_path}{resource}, |
|
|
}}); |
|
|
if (not $anvil->data->{server}{$server}{device}{$device_path}{resource}) |
|
|
{ |
|
|
$anvil->Log->entry({source => $THIS_FILE, line => __LINE__, 'print' => 0, level => 0, priority => "err", key => "log_0414", variables => { drbd_device => $device_path }}); |
|
|
$anvil->nice_exit({exit_code => 5}); |
|
|
} |
|
|
} |
|
|
|
|
|
foreach my $device_target (sort {$a cmp $b} keys %{$anvil->data->{server}{$server}{$source}{device}{disk}{target}}) |
|
|
{ |
|
|
my $drbd_device = $anvil->data->{server}{$server}{$source}{device}{disk}{target}{$device_target}{path}; |
|
|
my $drbd_resource = $anvil->data->{drbd}{config}{$host}{drbd_path}{$drbd_device}{resource}; |
|
|
my $on_lv = $anvil->data->{drbd}{config}{$host}{drbd_path}{$drbd_device}{on}; |
|
|
$anvil->Log->variables({source => $THIS_FILE, line => __LINE__, level => 2, list => { |
|
|
host => $host, |
|
|
drbd_device => $drbd_device, |
|
|
drbd_resource => $drbd_resource, |
|
|
on_lv => $on_lv, |
|
|
}}); |
|
|
|
|
|
# If the logical volume here here and active? |
|
|
if ((not $on_lv) or (not exists $anvil->data->{lvm}{'local'}{lv}{$on_lv})) |
|
|
{ |
|
|
# LV not found |
|
|
$anvil->Log->entry({source => $THIS_FILE, line => __LINE__, 'print' => 0, level => 0, priority => "err", key => "log_0374", variables => { drbd_device => $drbd_device, lv_path => $on_lv }}); |
|
|
$anvil->nice_exit({exit_code => 5}); |
|
|
} |
|
|
elsif (not $anvil->data->{lvm}{'local'}{lv}{$on_lv}{active}) |
|
|
{ |
|
|
# LV not active. If we're starting the server or we're the migration target, try to |
|
|
# activate it. |
|
|
my $active = $anvil->System->activate_lv({debug => 2, path => $on_lv}); |
|
|
$anvil->Log->variables({source => $THIS_FILE, line => __LINE__, level => 2, list => { active => $active }}); |
|
|
$anvil->Log->entry({source => $THIS_FILE, line => __LINE__, 'print' => 0, level => 1, key => "log_0413", variables => { lv_path => $on_lv }}); |
|
|
|
|
|
if (not $active) |
|
|
{ |
|
|
# Boo :( |
|
|
$anvil->Log->entry({source => $THIS_FILE, line => __LINE__, 'print' => 0, level => 0, priority => "err", key => "log_0375", variables => { drbd_device => $drbd_device, lv_path => $on_lv }}); |
|
|
$anvil->nice_exit({exit_code => 5}); |
|
|
} |
|
|
} |
|
|
|
|
|
# LV is good if I am still alive. |
|
|
$anvil->Log->entry({source => $THIS_FILE, line => __LINE__, 'print' => 0, level => 1, key => "log_0376", variables => { |
|
|
drbd_device => $drbd_device, |
|
|
lv_path => $on_lv, |
|
|
}}); |
|
|
|
|
|
} |
|
|
|
|
|
### NOTE: Checking/Managing firewall ports is expensive option, so DRBD ports are permanently opened |
|
|
### when a resource is created. |
|
|
|
|
|
return(0); |
|
|
} |
|
|
|
|
|
# This processes the DRBD setup JSON data |
|
|
sub check_drbd_status |
|
|
{ |
|
|
my ($anvil, $status_json) = @_; |
|
|
$anvil->Log->variables({source => $THIS_FILE, line => __LINE__, level => 3, list => { status_json => $status_json }}); |
|
|
|
|
|
|
|
|
return(0); |
|
|
} |
|
|
|
|
|
# This makes sure that any media in the server's optical drive exists here and is readable. |
|
|
sub validate_storage_optical |
|
|
{ |
|
|
my ($anvil) = @_; |
|
|
|
|
|
|
|
|
|
|
|
return(0); |
|
|
} |
|
|
|
|
|
# This verifies that the requested emulator exists and can be used. |
|
|
sub validate_emulator |
|
|
{ |
|
|
my ($anvil) = @_; |
|
|
|
|
|
# What emulator is this using? |
|
|
my $server = $anvil->data->{environment}{OCF_RESKEY_name}; |
|
|
my $emulator = $anvil->data->{server}{$server}{from_disk}{info}{emulator}; |
|
|
$anvil->Log->variables({source => $THIS_FILE, line => __LINE__, level => 2, list => { |
|
|
emulator => $emulator, |
|
|
"server::${server}::from_disk::info::emulator" => $anvil->data->{server}{$server}{from_disk}{info}{emulator} |
|
|
}}); |
|
|
if (not -e $emulator) |
|
|
{ |
|
|
# It doesn't exist. Exit with OCF_ERR_INSTALLED (5). |
|
|
$anvil->Log->entry({source => $THIS_FILE, line => __LINE__, 'print' => 1, level => 0, priority => "err", key => "log_0401", variables => { |
|
|
emulator => $emulator, |
|
|
definition_file => $anvil->data->{server}{definition_file}, |
|
|
}}); |
|
|
$anvil->nice_exit({exit_code => 5}); |
|
|
} |
|
|
if (not -x $emulator) |
|
|
{ |
|
|
# We can't execute it. Exit with OCF_ERR_PERM (4). |
|
|
$anvil->Log->entry({source => $THIS_FILE, line => __LINE__, 'print' => 1, level => 0, priority => "err", key => "log_0402", variables => { emulator => $emulator }}); |
|
|
$anvil->nice_exit({exit_code => 4}); |
|
|
} |
|
|
$anvil->Log->entry({source => $THIS_FILE, line => __LINE__, 'print' => 1, level => 2, key => "log_0364"}); |
|
|
|
|
|
return(0); |
|
|
} |
|
|
|
|
|
# This makes sure the name we see in the definition file matches what we expect. |
|
|
sub validate_name |
|
|
{ |
|
|
my ($anvil) = @_; |
|
|
|
|
|
my $server = $anvil->data->{environment}{OCF_RESKEY_name}; |
|
|
$anvil->Log->variables({source => $THIS_FILE, line => __LINE__, level => 2, list => { |
|
|
server => $server, |
|
|
"server::${server}::from_disk::info::name" => $anvil->data->{server}{$server}{from_disk}{info}{name}, |
|
|
}}); |
|
|
|
|
|
# If we failed to read the XML, the server probably doesn't exist. |
|
|
if (not $anvil->data->{server}{$server}{from_disk}{xml}) |
|
|
{ |
|
|
$anvil->Log->entry({source => $THIS_FILE, line => __LINE__, 'print' => 1, level => 0, priority => "err", key => "log_0403", variables => { |
|
|
server => $server, |
|
|
name => $anvil->data->{server}{definition_xml}->{name}, |
|
|
}}); |
|
|
$anvil->nice_exit({exit_code => 1}); |
|
|
} |
|
|
|
|
|
# Is the name in the definition file what we expect? |
|
|
if ($server ne $anvil->data->{server}{$server}{from_disk}{info}{name}) |
|
|
{ |
|
|
$anvil->Log->entry({source => $THIS_FILE, line => __LINE__, 'print' => 1, level => 0, priority => "err", key => "log_0403", variables => { |
|
|
server => $server, |
|
|
name => $anvil->data->{server}{$server}{from_disk}{info}{name}, |
|
|
}}); |
|
|
$anvil->nice_exit({exit_code => 1}); |
|
|
} |
|
|
$anvil->Log->entry({source => $THIS_FILE, line => __LINE__, 'print' => 1, level => 2, key => "log_0363"}); |
|
|
|
|
|
return(0); |
|
|
} |
|
|
|
|
|
# This checks that there is enough RAM to run this server. |
|
|
sub validate_ram |
|
|
{ |
|
|
my ($anvil) = @_; |
|
|
|
|
|
# How mcuh RAM does the server need and how much do we have free? |
|
|
my $server = $anvil->data->{environment}{OCF_RESKEY_name}; |
|
|
my $server_ram_bytes = $anvil->data->{server}{$server}{from_disk}{memory}; |
|
|
my $available = $anvil->System->get_free_memory({debug => 2}); |
|
|
$anvil->Log->variables({source => $THIS_FILE, line => __LINE__, level => 2, list => { |
|
|
server_ram_bytes => $anvil->Convert->add_commas({number => $server_ram_bytes})." (".$anvil->Convert->bytes_to_human_readable({'bytes' => $server_ram_bytes}).")", |
|
|
available => $anvil->Convert->add_commas({number => $available})." (".$anvil->Convert->bytes_to_human_readable({'bytes' => $available}).")", |
|
|
}}); |
|
|
if ($server_ram_bytes > $available) |
|
|
{ |
|
|
# Not enough free memory. |
|
|
$anvil->Log->entry({source => $THIS_FILE, line => __LINE__, 'print' => 1, level => 0, priority => "err", key => "log_0404", variables => { |
|
|
name => $server, |
|
|
ram => $anvil->Convert->bytes_to_human_readable({'bytes' => $server_ram_bytes}), |
|
|
ram_bytes => $anvil->Convert->add_commas({number => $server_ram_bytes}), |
|
|
available_ram => $anvil->Convert->bytes_to_human_readable({'bytes' => $server_ram_bytes}), |
|
|
available_ram_bytes => $anvil->Convert->add_commas({number => $available}), |
|
|
}}); |
|
|
$anvil->nice_exit({exit_code => 1}); |
|
|
} |
|
|
$anvil->Log->entry({source => $THIS_FILE, line => __LINE__, 'print' => 1, level => 2, key => "log_0365"}); |
|
|
|
|
|
return(0); |
|
|
} |
|
|
|
|
|
### TODO: Make sure the appropriate SN ports are opened. |
|
|
# This stops (drbdadm down <server>) the storage for a given server on both nodes. |
|
|
sub manage_drbd_resource |
|
|
{ |
|
|
my ($anvil, $task, $resource) = @_; |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
return(0); |
|
|
} |
|
|
|
|
|
# This reads the XML definition data into an XML data hash. |
|
|
sub read_server_definition |
|
|
{ |
|
|
my ($anvil) = @_; |
|
|
|
|
|
my $server = $anvil->data->{environment}{OCF_RESKEY_name}; |
|
|
$anvil->Log->variables({source => $THIS_FILE, line => __LINE__, level => 3, list => { |
|
|
server => $server, |
|
|
}}); |
|
|
|
|
|
|
|
|
return(0); |
|
|
} |
|
|
|
|
|
# This logs the details of this call. |
|
|
sub show_environment |
|
|
{ |
|
|
my ($anvil, $level) = @_; |
|
|
|
|
|
foreach my $key (sort {$a cmp $b} keys %{$anvil->data->{switches}}) |
|
|
{ |
|
|
next if $key eq "raw"; |
|
|
next if $anvil->data->{switches}{$key} eq ""; |
|
|
$anvil->Log->variables({source => $THIS_FILE, line => __LINE__, level => $level, list => { "switches::${key}" => $anvil->data->{switches}{$key} }}); |
|
|
} |
|
|
foreach my $key (sort {$a cmp $b} keys %{$anvil->data->{environment}}) |
|
|
{ |
|
|
next if $anvil->data->{environment}{$key} eq ""; |
|
|
$anvil->Log->variables({source => $THIS_FILE, line => __LINE__, level => $level, list => { "environment::${key}" => $anvil->data->{environment}{$key} }}); |
|
|
} |
|
|
foreach my $key (sort {$a cmp $b} keys %ENV) |
|
|
{ |
|
|
next if exists $anvil->data->{environment}{$key}; |
|
|
$anvil->Log->variables({source => $THIS_FILE, line => __LINE__, level => $level, list => { "ENV::${key}" => $ENV{$key} }}); |
|
|
} |
|
|
foreach my $value (@ARGV) |
|
|
{ |
|
|
$anvil->Log->variables({source => $THIS_FILE, line => __LINE__, level => $level, list => { "ARGV" => $value }}); |
|
|
} |
|
|
|
|
|
return(0); |
|
|
} |
|
|
|
|
|
# This just prints a quick usage message for now. |
|
|
sub show_usage |
|
|
{ |
|
|
my ($anvil) = @_; |
|
|
|
|
|
### TODO: How to use this... |
|
|
|
|
|
$anvil->nice_exit({exit_code => 0}); |
|
|
} |
|
|
|
|
|
# This prints out the metadata and exits. |
|
|
sub show_metadata |
|
|
{ |
|
|
my ($anvil) = @_; |
|
|
|
|
|
# This is a pretty simple agent, by design. We only take a server name for now. |
|
|
print '<?xml version="1.0"?> |
|
|
<!DOCTYPE resource-agent SYSTEM "ra-api-1.dtd"> |
|
|
<resource-agent name="ocs:alteeve:server" version="0.1"> |
|
|
<version>1.0</version> |
|
|
<longdesc lang="en"> |
|
|
This resource agent manages KVM+qemu virtual servers on an Anvil! m3 Intelligent Availability(tm) system. |
|
|
It manages underlying components like DRBD 9 storage resources, brodge connections and so forth. |
|
|
</longdesc> |
|
|
<shortdesc lang="en">Anvil! m3 server resource agent</shortdesc> |
|
|
<parameters> |
|
|
<parameter name="name" unique="1" required="1"> |
|
|
<longdesc lang="en"> |
|
|
This is the name of the server as reported by virsh. |
|
|
</longdesc> |
|
|
<shortdesc lang="en">Server name</shortdesc> |
|
|
<content type="string"/> |
|
|
</parameter> |
|
|
</parameters> |
|
|
<actions> |
|
|
<action name="start" timeout="30" /> |
|
|
<action name="stop" timeout="60" /> |
|
|
<action name="monitor" timeout="10" /> |
|
|
<action name="notify" timeout="20" /> |
|
|
<action name="migrate_to" timeout="600" /> |
|
|
<action name="migrate_from" timeout="600" /> |
|
|
<action name="meta-data" timeout="5" /> |
|
|
<action name="validate-all" timeout="20" /> |
|
|
</actions> |
|
|
</resource-agent> |
|
|
'; |
|
|
|
|
|
$anvil->nice_exit({exit_code => 0}); |
|
|
}
|
|
|
|
