Sun Cluster 3.0 U1 Data Services Installation and Configuration Guide

Configuring Sun Cluster HA for Apache Extension Properties

The only required extension properties for creating an Apache server resource are the Confdir_list and Bin_dir properties. The Confdir_list property specifies a directory that contains a subdirectory named conf, in which the Apache configuration properties (httpd.conf) reside.

Typically, you use the command-line scrgadm -x parameter=value to configure the extension properties when you create the Apache server resource. You can also follow the procedures described in Chapter 11, Administering Data-Service Resources to configure the properties later.

See Appendix A, Standard Properties for details on all Sun Cluster properties.

You can update some extension properties dynamically. You can update others, however, only when you create the Apache server resource. The following table describes extension properties that you can configure for the Apache server. The Tunable column indicates when you can update the property.

Table 5-2 Sun Cluster HA for Apache Extension Properties


Name/Data Type	Default	Range	Tunable	Description
`Bin_dir` (string)	None	None	At creation	The path to the Apache binaries. The Sun Cluster HA for Apache data service requires this extension property.
`Confdir_list` (string array)	None	None	At creation	The directory that contains a subdirectory called `conf`, which contains the `httpd.conf` configuration file. The Sun Cluster HA for Apache data service requires this extension property.
`Monitor_retry_count` (integer)	`4`	`0` - `2,147,483,641` -1 indicates an infinite number of retry attempts.	At creation	Controls restarts of the fault monitor and indicates the number of times that the process monitor facility (PMF) restarts the fault monitor during the time window that the `Monitor_retry_interval` property specifies. This property refers to restarts of the fault monitor itself rather than to the resource. The system-defined properties `Retry_interval` and `Retry_count` control resource restarts.
`Monitor_retry_interval` (integer)	`2`	`0` - `2,147,483,641` `-1` indicates an infinite retry interval.	At creation	The time (in minutes) over which failures of the fault monitor are counted. If the number of times that the fault monitor fails exceeds the value that is specified in the extension property `Monitor_retry_count` within this period, the PMF does not restart the fault monitor.
`Probe_timeout` (integer)	`30`	`0` - `2,147,483,641`	At creation	The time-out value (in seconds) that the fault monitor uses to probe an Apache instance.