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3.2. Cluster Options

Cluster options, as you'd expect, control how the cluster behaves when confronted with certain situations.
They are grouped into sets and, in advanced configurations, there may be more than one.[5] For now we will describe the simple case where each option is present at most once.

3.2.1. Available Cluster Options

Table 3.4. Cluster Options
Option Default Description
batch-limit 30 The number of jobs that the TE is allowed to execute in parallel. The "correct" value will depend on the speed and load of your network and cluster nodes.
no-quorum-policy stop What to do when the cluster does not have quorum. Allowed values:
  • ignore - continue all resource management
  • freeze - continue resource management, but don't recover resources from nodes not in the affected partition
  • stop - stop all resources in the affected cluster parition
  • suicide - fence all nodes in the affected cluster partition
symmetric-cluster TRUE Can all resources run on any node by default?
stonith-enabled TRUE
Should failed nodes and nodes with resources that can't be stopped be shot? If you value your data, set up a STONITH device and enable this.
If true, or unset, the cluster will refuse to start resources unless one or more STONITH resources have been configured also.
stonith-action reboot Action to send to STONITH device. Allowed values: reboot, poweroff.
cluster-delay 60s 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-resources TRUE Should deleted resources be stopped
stop-orphan-actions TRUE Should deleted actions be cancelled
start-failure-is-fatal TRUE When set to FALSE, the cluster will instead use the resource's failcount and value for resource-failure-stickiness
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.

You can always obtain an up-to-date list of cluster options, including their default values by running the pengine metadata command.

[5] This will be described later in the section on Chapter 8, Rules where we will show how to have the cluster use different sets of options during working hours (when downtime is usually to be avoided at all costs) than it does during the weekends (when resources can be moved to the their preferred hosts without bothering end users)