Chapter 10. Pacemaker Cluster Properties

Cluster properties control how the cluster behaves when confronted with situations that may occur during cluster operation.

10.1. Summary of Cluster Properties and Options

Table 10.1, “Cluster Properties” summaries the Pacemaker cluster properties, showing the default values of the properties and the possible values you can set for those properties.

Note

In addition to the properties described in this table, there are additional cluster properties that are exposed by the cluster software. For these properties, it is recommended that you not change their values from their defaults.

Table 10.1. Cluster Properties

OptionDefaultDescription
batch-limit30
The number of jobs that the transition engine (TE) is allowed to execute in parallel. The "correct" value will depend on the speed and load of your network and cluster nodes.
migration-limit-1 (unlimited)
The number of migration jobs that the TE is allowed to execute in parallel on a node.
no-quorum-policystop
What to do when the cluster does not have quorum. Allowed values:
* ignore - continue all resource management
* freeze - continue resource management, but do not recover resources from nodes not in the affected partition
* stop - stop all resources in the affected cluster partition
* suicide - fence all nodes in the affected cluster partition
symmetric-clustertrue
Indicates whether resources can run on any node by default.
stonith-enabledtrue
Indicates that failed nodes and nodes with resources that cannot be stopped should be fenced. Protecting your data requires that you set this true.
If true, or unset, the cluster will refuse to start resources unless one or more STONITH resources have been configured also.
stonith-actionreboot
Action to send to STONITH device. Allowed values: reboot, off. The value poweroff is also allowed, but is only used for legacy devices.
cluster-delay60s
Round trip delay over the network (excluding action execution). The "correct" value will depend on the speed and load of your network and cluster nodes.
stop-orphan-resourcestrue
Indicates whether deleted resources should be stopped.
stop-orphan-actionstrue
Indicates whether deleted actions should be canceled.
start-failure-is-fataltrue
Indicates whether a failure to start a resource on a particular node prevents further start attempts on that node. When set to false, the cluster will decide whether to try starting on the same node again based on the resource's current failure count and migration threshold. For information on setting the migration-threshold option for a resource, see Section 7.2, “Moving Resources Due to Failure”.
pe-error-series-max-1 (all)
The number of PE inputs resulting in ERRORs to save. Used when reporting problems.
pe-warn-series-max-1 (all)
The number of PE inputs resulting in WARNINGs to save. Used when reporting problems.
pe-input-series-max-1 (all)
The number of "normal" PE inputs to save. Used when reporting problems.
cluster-infrastructure 
The messaging stack on which Pacemaker is currently running. Used for informational and diagnostic purposes; not user-configurable.
dc-version 
Version of Pacemaker on the cluster's Designated Controller (DC). Used for diagnostic purposes; not user-configurable.
last-lrm-refresh 
Last refresh of the Local Resource Manager, given in units of seconds since epoca. Used for diagnostic purposes; not user-configurable.
cluster-recheck-interval60
Polling interval for time-based changes to options, resource parameters and constraints. Allowed values: Zero disables polling, positive values are an interval in seconds (unless other SI units are specified, such as 5min).
default-action-timeout20s
Timeout value for a Pacemaker action. The setting for an operation in a resource itself always takes precedence over the default value set as a cluster option.
maintenance-modefalse
Maintenance Mode tells the cluster to go to a "hands off" mode, and not start or stop any services until told otherwise. When maintenance mode is completed, the cluster does a sanity check of the current state of any services, and then stops or starts any that need it.
shutdown-escalation20min
The time after which to give up trying to shut down gracefully and just exit. Advanced use only.
stonith-timeout60s
How long to wait for a STONITH action to complete.
stop-all-resourcesfalse
Should the cluster stop all resources.
default-resource-stickiness5000
Indicates how much a resource prefers to stay where it is. It is recommended that you set this value as a resource/operation default rather than as a cluster option.
is-managed-defaulttrue
Indicates whether the cluster is allowed to start and stop a resource. It is recommended that you set this value as a resource/operation default rather than as a cluster option.
enable-aclfalse
(Red Hat Enterprise Linux 6.6 and later) Indicates whether the cluster can use access control lists, as set with the pcs acl command.