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NAME | SYNOPSIS | DESCRIPTION | OTHER MANAGEMENT OPTIONS | SEE ALSO | COLOPHON |
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INDOMCACHECTL(1) General Commands Manual INDOMCACHECTL(1)
indomcachectl - manage instance domain cache files
$PCP_BINADM_DIR/indomcachectl [-w] -l indom
$PCP_BINADM_DIR/indomcachectl [-w] [-m mode] [-g group] [-u user]
indom
indomcachectl assists in the management of the Instance Domain
cache files that are stored in $PCP_VAR_DIR/config/pmda.
The mandatory indom parameter uses a 2-dotted format to specify
the domain and serial fields of the instance domain number. The
required values can be reported for a particular metric using the
-d option to pminfo(1).
The list of available options can be retrieved using the
-?/--help option, which displays a usage message and exits.
If the -l/--list option is specified the contents of the instance
domain cache file are dumped on stdout and indomcachectl exits.
Otherwise an empty instance domain cache file will be created.
The user ownership of the created file is assigned to the uid of
the caller, but may optionally assigned to the uid of user from
the passwd(5) file if the -u/--user option is specified. The
group ownership of the created file is assigned to the gid of the
caller, else the default gid of the user user if the -u option is
specified, else the gid of group from the group(5) file if the
-g/--group option is specified.
The instance domain cache file is created with mode 0660 by
default (some PMDAs use group read-write permission to access and
update the contents of the file) - if this does not suit the
-m/--mode option may be used to set the mode to the (octal) value
mode.
Because the indom cache files are precious to the associated PMDA
indomcachectl will not over-write an existing indom cache file.
Operation is usually silent, except for errors (or warnings if
the -w/--warning option is used). The exit status is 0 for
success, 1 for failure.
The files in $PCP_VAR_DIR/config/pmda are all text files (one per
cached instance domain) so judicious surgery may be used to make
changes or even remove the files in extreme cases provided the
PMDA is not executing.
Here is an example for the instance domain number 60.17 that is
associated with the network.interface.* metrics.
$ cat /var/lib/pcp/config/pmda/60.17
2 0 2147483647
0 1712727825 ens33
1 1712727825 virbr0
2 1712727825 lo
The first line is a magic header, do not change it. Following
that is one line per instance with the instance identifier (an
integer) in the first field, some magic in the second field (do
not change this) and the external instance name in the third
field.
PCPIntro(1), chmod(1), pminfo(1), PMAPI(3), PMDA(3),
pmdaCache(3), group(5) and passwd(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 INDOMCACHECTL(1)
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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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