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How to find the process that is using the port 80 and apache server.
05-22-2008
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OCF_HEARTBEAT_APACHE(7) OCF resource agents OCF_HEARTBEAT_APACHE(7) NAME
ocf_heartbeat_apache - Manages an Apache web server instance SYNOPSIS
apache [start | stop | status | monitor | meta-data | validate-all] DESCRIPTION
This is the resource agent for the Apache web server. Thie resource agent operates both version 1.x and version 2.x Apache servers. The start operation ends with a loop in which monitor is repeatedly called to make sure that the server started and that it is operational. Hence, if the monitor operation does not succeed within the start operation timeout, the apache resource will end with an error status. The monitor operation by default loads the server status page which depends on the mod_status module and the corresponding configuration file (usually /etc/apache2/mod_status.conf). Make sure that the server status page works and that the access is allowed *only* from localhost (address 127.0.0.1). See the statusurl and testregex attributes for more details. See also http://httpd.apache.org/ SUPPORTED PARAMETERS
configfile The full pathname of the Apache configuration file. This file is parsed to provide defaults for various other resource agent parameters. (optional, string, default /etc/apache2/httpd.conf) httpd The full pathname of the httpd binary (optional). (optional, string, default /usr/sbin/httpd) port A port number that we can probe for status information using the statusurl. This will default to the port number found in the configuration file, or 80, if none can be found in the configuration file. (optional, integer, no default) statusurl The URL to monitor (the apache server status page by default). If left unspecified, it will be inferred from the apache configuration file. If you set this, make sure that it succeeds *only* from the localhost (127.0.0.1). Otherwise, it may happen that the cluster complains about the resource being active on multiple nodes. (optional, string, no default) testregex Regular expression to match in the output of statusurl. Case insensitive. (optional, string, default exists, but impossible to show in a human readable format (try grep testregex)) client Client to use to query to Apache. If not specified, the RA will try to find one on the system. Currently, wget and curl are supported. For example, you can set this paramter to "curl" if you prefer that to wget. (optional, string, no default) testurl URL to test. If it does not start with "http", then it's considered to be relative to the Listen address. (optional, string, no default) testregex10 Regular expression to match in the output of testurl. Case insensitive. (optional, string, no default) testconffile A file which contains test configuration. Could be useful if you have to check more than one web application or in case sensitive info should be passed as arguments (passwords). Furthermore, using a config file is the only way to specify certain parameters. Please see README.webapps for examples and file description. (optional, string, no default) testname Name of the test within the test configuration file. (optional, string, no default) options Extra options to apply when starting apache. See man httpd(8). (optional, string, no default) envfiles Files (one or more) which contain extra environment variables. If you want to prevent script from reading the default file, set this parameter to empty string. (optional, string, default /etc/apache2/envvars) SUPPORTED ACTIONS
This resource agent supports the following actions (operations): start Starts the resource. Suggested minimum timeout: 40s. stop Stops the resource. Suggested minimum timeout: 60s. status Performs a status check. Suggested minimum timeout: 30s. monitor Performs a detailed status check. Suggested minimum timeout: 20s. Suggested interval: 10. meta-data Retrieves resource agent metadata (internal use only). Suggested minimum timeout: 5. validate-all Performs a validation of the resource configuration. Suggested minimum timeout: 5. EXAMPLE
The following is an example configuration for a apache resource using the crm(8) shell: primitive example_apache ocf:heartbeat:apache op monitor depth="0" timeout="20s" interval="10" SEE ALSO
http://www.linux-ha.org/wiki/apache_(resource_agent) AUTHOR
Linux-HA contributors (see the resource agent source for information about individual authors) resource-agents 1.0.3 07/05/2010 OCF_HEARTBEAT_APACHE(7)