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NAME | SYNOPSIS | DESCRIPTION | INSTALLATION | FILES | PCP ENVIRONMENT | SEE ALSO | COLOPHON |
PMDAAPACHE(1) General Commands Manual PMDAAPACHE(1)
pmdaapache - Apache2 web server performance metrics domain agent
(PMDA)
$PCP_PMDAS_DIR/apache/pmdaapache [-d domain] [-l logfile] [-U
username] [-S server] [-P port] [-L location]
pmdaapache is a Performance Metrics Domain Agent (PMDA) which
extracts performance metrics describing the state of an Apache web
server.
The apache PMDA exports metrics that measure the request rate,
cumulative request sizes, uptime and various connection states for
active clients.
This information is obtained by performing a HTTP request to the
server status URL, which must be enabled in the httpd.conf
configuration file.
ExtendedStatus on
<Location /server-status>
SetHandler server-status
Order deny,allow
Deny from all
Allow from localhost
</Location>
A brief description of the pmdaapache command line options follows:
-d It is absolutely crucial that the performance metrics domain
number specified here is unique and consistent. That is, domain
should be different for every PMDA on the one host, and the same
domain number should be used for the same PMDA on all hosts.
-l Location of the log file. By default, a log file named
apache.log is written in the current directory of pmcd(1) when
pmdaapache is started, i.e. $PCP_LOG_DIR/pmcd . If the log
file cannot be created or is not writable, output is written to
the standard error instead.
-S Query the Apache status information from the named server rather
than the local host.
-P Query the Apache status information from the given port rather
than the default (80).
-L Specify an alternative location for finding the server-status
page.
-U User account under which to run the agent. The default is the
unprivileged "pcp" account in current versions of PCP, but in
older versions the superuser account ("root") was used by
default.
If you want access to the names, help text and values for the apache
performance metrics, do the following as root:
# cd $PCP_PMDAS_DIR/apache
# ./Install
If you want to undo the installation, do the following as root:
# cd $PCP_PMDAS_DIR/apache
# ./Remove
pmdaapache is launched by pmcd(1) and should never be executed
directly. The Install and Remove scripts notify pmcd(1) when the
agent is installed or removed.
$PCP_PMCDCONF_PATH
command line options used to launch pmdaapache
$PCP_PMDAS_DIR/apache/help
default help text file for the apache metrics
$PCP_PMDAS_DIR/apache/Install
installation script for the pmdaapache agent
$PCP_PMDAS_DIR/apache/Remove
undo installation script for the pmdaapache agent
$PCP_LOG_DIR/pmcd/apache.log
default log file for error messages and other information
from pmdaapache
Environment variables with the prefix PCP_ are used to parameterize
the file and directory names used by PCP. On each installation, the
file /etc/pcp.conf contains the local values for these variables.
The $PCP_CONF variable may be used to specify an alternative
configuration file, as described in pcp.conf(5).
PCPIntro(1), httpd(8), pmcd(1), pcp.conf(5) and pcp.env(5).
This page is part of the PCP (Performance Co-Pilot) project.
Information about the project can be found at ⟨http://www.pcp.io/⟩.
If you have a bug report for this manual page, send it to
pcp@oss.sgi.com. This page was obtained from the project's upstream
Git repository ⟨git://git.pcp.io/pcp⟩ on 2017-07-05. If you discover
any rendering problems in this HTML version of the page, or you
believe there is a better or more up-to-date source for the page, or
you have corrections or improvements to the information in this
COLOPHON (which is not part of the original manual page), send a mail
to man-pages@man7.org
Performance Co-Pilot PCP PMDAAPACHE(1)
Pages that refer to this page: pcp-atop(1), pmhttpnewclient(3)