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CentOS 7.0 - man page for pmdasystemd (centos section 1)

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PMDASYSTEMD(1)									   PMDASYSTEMD(1)

NAME
       pmdasystemd - systemd performance metrics domain agent (PMDA)

SYNOPSIS
       $PCP_PMDAS_DIR/systemd/pmdasystemd [-f] [-d domain] [-l logfile] [-m memory] [-s interval]
       [-U username]

DESCRIPTION
       pmdasystemd is a systemd log file monitoring Performance Metrics Domain Agent (PMDA).   It
       can  be seen as analagous to the -f option to journalctl(1) and converts each new log line
       into a  performance  event,  suitable  for  consumption	by  PMAPI(3)  client  tools  like
       pmevent(1).

       The systemd PMDA exports both event-style metrics reflecting timestamped event records for
       messages logged to the system logs, as well as the more orthodox sample-style metrics such
       as message counts and throughput size values.

       A brief description of the pmdasystemd 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.

       -f   Disables  per-uid/gid  record  filtering.	By default the user and group credentials
	    will be used to filter log records returned to the client tool,  preventing  informa-
	    tion  exposure  to	arbitrary  users.   This  option  disables that, so use only with
	    extreme caution.

       -l   Location of the log file.  By default, a log file named systemd.log is written in the
	    current  directory	of  pmcd(1) when pmdasystemd is started, i.e.  $PCP_LOG_DIR/pmcd.
	    If the log file cannot be created or is not writable, output is written to the  stan-
	    dard error instead.

       -m   Limit  the physical memory used by the PMDA to buffer event records to maxsize bytes.
	    As log events arrive at the PMDA, they must be buffered until individual client tools
	    request  the next batch since their previous batch of events.  The default maximum is
	    2 megabytes.

       -s   Sets the polling interval for detecting newly arrived log lines.   Mirrors	the  same
	    option from the tail(1) command.

       -U   User account under which to run the agent.	The default is the "adm" user account.

INSTALLATION
       If you want access to the names, help text and values for the systemd performance metrics,
       do the following as root:

	    # cd $PCP_PMDAS_DIR/systemd
	    # ./Install

       If you want to undo the installation, do the following as root:

	    # cd $PCP_PMDAS_DIR/systemd
	    # ./Remove

       pmdasystemd 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.

FILES
       $PCP_PMCDCONF_PATH
		 command line options used to launch pmdasystemd
       $PCP_PMDAS_DIR/systemd/help
		 default help text file for the systemd metrics
       $PCP_PMDAS_DIR/systemd/Install
		 installation script for the pmdasystemd agent
       $PCP_PMDAS_DIR/systemd/Remove
		 undo installation script for the pmdasystemd agent
       $PCP_LOG_DIR/pmcd/systemd.log
		 default log file for error messages and other information from pmdasystemd

PCP ENVIRONMENT
       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 config-
       uration file, as described in pcp.conf(5).

SEE ALSO
       PCPIntro(1),  pmcd(1),  pmevent(1),  journalctl(1),  tail(1),  PMAPI(3),  pcp.conf(5)  and
       pcp.env(5).

Performance Co-Pilot			       PCP				   PMDASYSTEMD(1)


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