pmcd_wait(1) — Linux manual page


PMCD_WAIT(1)               General Commands Manual              PMCD_WAIT(1)

NAME         top

       pmcd_wait - wait for PMCD to accept client connections

SYNOPSIS         top

       $PCP_BINADM_DIR/pmcd_wait [-v] [-h host] [-t timeout]

DESCRIPTION         top

       pmcd_wait waits for the Performance Metrics Collector Daemon (PMCD)
       to be running and accepting client connections.

       Unless directed to another host by the -h option, pmcd_wait will try
       to contact pmcd(1) on the local host.

       pmcd_wait will timeout and abandon the attempt to connect to pmcd
       after 60 seconds.  This default timeout interval may be changed using
       the -t option, where the interval argument follows the syntax
       described in PCPIntro(1) and in the simplest form may be an unsigned
       integer (the implied units in this case are seconds).

       On successful connection to pmcd an exit status of zero is returned.

       If an error or timeout occurs, then a non-zero exit status is
       returned as described below.

OPTIONS         top

       The available command line options are:

       -h host, --host=host
            Connect pmcd(1) on host, rather than the one on the default

       -t timeout, --interval=timeout
            Timeout after timeout seconds if not connected.  The default
            timeout value is 60 seconds.

       -v, --verbose
            This option turns the verbose mode on.  With the verbose mode
            off (which is the default), no output will be generated.  With
            verbose mode on, error messages will be output on stderr.

DIAGNOSTICS         top

       Error messages will be output to stderr only if the verbose mode is

       The following exit status codes are returned:

       0      pmcd_wait was able to successfully connect to pmcd within the
              timeout period.

       1      A usage error occurred, use -v for more details.

       2      No connection was made in the timeout interval.  This will
              happen if pmcd is running but takes too long to complete the
              client connection, or if pmcd is not running and all
              connection attempts in the timeout interval failed with the
              error ECONNREFUSED.

       3      A UNIX error occurred, use -v for more details.

       4      A PCP error occurred, use -v for more details.


       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), pcp.conf(5) and pcp.env(5).

COLOPHON         top

       This page is part of the PCP (Performance Co-Pilot) project.
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Performance Co-Pilot                 PCP                        PMCD_WAIT(1)