NAME

       pmdatrivial - trivial performance metrics domain agent (PMDA)

SYNOPSIS

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

DESCRIPTION

       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

       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

       $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

       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

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