NAME

       pmnsdel - delete a subtree of names from the Performance Co-Pilot PMNS

SYNOPSIS

       $PCP_BINADM_DIR/pmnsdel [-?]  [-n namespace] metricpath [...]

DESCRIPTION

       pmnsdel removes subtrees of names from a Performance Metrics Name Space (PMNS), as used by the components
       of the Performance Co-Pilot (PCP).

       Normally pmnsdel operates on the default Performance Metrics Name Space (PMNS), however if the -n  option
       is specified an alternative namespace is used from the file namespace.

       The default PMNS is found in the file $PCP_VAR_DIR/pmns/root unless the environment variable PMNS_DEFAULT
       is set, in which case the value is assumed to be the pathname to the file containing the default PMNS.

       The metric names to be deleted are all those for which one of the metricpath arguments is a prefix in the
       PMNS, see PMNS(5).

       All  of  the  files  defining the PMNS must be located within the directory that contains the root of the
       PMNS, and this would typically be $PCP_VAR_DIR/pmns for the default PMNS, and this would typically  imply
       running pmnsdel as root.

       Provided  some  initial  integrity  checks  are  satisfied, pmnsdel will update the necessary PMNS files.
       Should an error be encountered the original namespace is restored.  Note that any PMNS files that are  no
       longer  referenced by the modified namespace will not be removed, even though their contents are not part
       of the new namespace.

OPTIONS

       The available command line options are:

       -n pmnsfile, --namespace=pmnsfile
            Load an alternative Performance Metrics Name Space (PMNS(5)) from the file pmnsfile.

       -?, --help
            Display usage message and exit.

CAVEATS

       Once the writing of the new namespace file has begun, the signals SIGINT,  SIGHUP  and  SIGTERM  will  be
       ignored to protect the integrity of the new files.

FILES

       $PCP_VAR_DIR/pmns/root
            the default PMNS, when the environment variable PMNS_DEFAULT is unset

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

       pmnsadd(1), pmnsmerge(1), pcp.conf(5), pcp.env(5) and PMNS(5).