Sun Cluster 3.0 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 Confdir_list and Bin_dir. Confdir_list specifies a directory that contains a subdirectory named conf, in which the Apache configuration properties (httpd.conf) reside.

For details on all Sun Cluster properties, see Appendix A, Standard Properties.

How to Configure Sun Cluster HA for Apache Extension Properties

Typically, you configure these properties by using the Cluster Module of Sun Management Center or the command-line scrgadm -x parameter=value at the time you create the Apache server resource. You can also configure them later by following the procedures described in Chapter 9, Administering Data Service Resources.

Some extension properties can be updated dynamically, others only when the resource is created. Table 5-2 describes extension properties your can configure for the Apache server. The Tunable column indicates when the property can be updated.

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. This is a required 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. This is a required 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 the fault monitor is to be restarted by the process monitor facility during the time window specified by the `Monitor_retry_interval` property. This property refers to restarts of the fault monitor itself rather than to the resource. Restarts of the resource are controlled by the system-defined properties `Retry_interval` and `Retry_count`.
`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 the fault monitor fails exceeds the value specified in the extension property `Monitor_retry_count` within this period, the fault monitor is not restarted by the process monitor facility.
`Probe_timeout` (integer)	30	0 - 2,147,483,641	At creation	The time-out value (in seconds) used by the fault monitor to probe an Apache instance.