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HTML rendering created 2024-06-26 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
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NAME | SYNOPSIS | DESCRIPTION | OPTIONS | CAVEATS | FILES | PCP ENVIRONMENT | SEE ALSO | COLOPHON |
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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 pcp@groups.io. This page was obtained from the
project's upstream Git repository
⟨https://github.com/performancecopilot/pcp.git⟩ on 2024-06-14.
(At that time, the date of the most recent commit that was found
in the repository was 2024-06-14.) 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 PMNSDEL(1)
Pages that refer to this page: pmnsadd(1), pmnscomp(1), pmnsmerge(1), pmda(3)
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HTML rendering created 2024-06-26 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
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