PMNSDEL(1) General Commands Manual PMNSDEL(1)
pmnsdel - delete a subtree of names from the Performance Co-Pilot PMNS
$PCP_BINADM_DIR/pmnsdel [-?] [-n namespace] metricpath [...]
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.
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.
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.
$PCP_VAR_DIR/pmns/root the default PMNS, when the environment variable PMNS_DEFAULT is unset
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).
pmnsadd(1), pmnsmerge(1), pcp.conf(5), pcp.env(5) and PMNS(5).
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 email@example.com. This page was obtained from the project's upstream Git repository ⟨https://github.com/performancecopilot/pcp.git⟩ on 2021-04-01. (At that time, the date of the most recent commit that was found in the repository was 2021-04-01.) 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 firstname.lastname@example.org Performance Co-Pilot PCP PMNSDEL(1)
Pages that refer to this page: pmnsadd(1), pmnscomp(1), pmnsmerge(1), pmda(3)