pmdatrivial(1) — Linux manual page

NAME | SYNOPSIS | DESCRIPTION | INSTALLATION | FILES | PCP ENVIRONMENT | SEE ALSO | COLOPHON

PMDATRIVIAL(1)           General Commands Manual          PMDATRIVIAL(1)

NAME         top

       pmdatrivial - trivial performance metrics domain agent (PMDA)

SYNOPSIS         top

       $PCP_PMDAS_DIR/trivial/pmdatrivial [-d domain] [-l logfile] [-U
       username]

DESCRIPTION         top

       pmdatrivial is the simplest possible Performance Metrics Domain
       Agent (PMDA) which exports a single performance metric, the time
       in seconds since the 1st of January, 1970.

       The trivial PMDA is shipped as source code and is designed to be
       an aid for PMDA developers.

       A brief description of the pmdatrivial 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
            trivial.log is written in the current directory of pmcd(1)
            when pmdatrivial 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.

       -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.

INSTALLATION         top

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

            # cd $PCP_PMDAS_DIR/trivial
            # ./Install

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

            # cd $PCP_PMDAS_DIR/trivial
            # ./Remove

       pmdatrivial 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         top

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

PCP ENVIRONMENT         top

       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).

SEE ALSO         top

       PCPIntro(1), pmcd(1), pmdasample(1), pmdasimple(1), pmdatxmon(1)
       and PMDA(3).

COLOPHON         top

       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@groups.io.  This page was obtained from the
       project's upstream Git repository
       ⟨https://github.com/performancecopilot/pcp.git⟩ on 2021-08-27.
       (At that time, the date of the most recent commit that was found
       in the repository was 2021-08-27.)  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                    PMDATRIVIAL(1)

Pages that refer to this page: pmdasample(1)pmdasimple(1)pmdatxmon(1)