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HTML rendering created 2025-02-02 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 | DESCRIPTION | INSTALLATION | FILES | PCP ENVIRONMENT | SEE ALSO | COLOPHON |
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PMDALIBVIRT(1) General Commands Manual PMDALIBVIRT(1)
pmdalibvirt - libvirt PMDA
pmdalibvirt is a Performance Metrics Domain Agent (PMDA) which
extracts live performance data from libvirt hypervisor and domains
(VMs).
See the libvirt documentation for detailed description of each
metric.
pmdalibvirt reads an optional ini-style configuration file
• $PCP_PMDAS_DIR/libvirt/libvirt.conf
This file can contain in its [pmda] section overriding values for
the following PMDA options:
• user
• uri
• backing
By default, root, qemu:///system, and False are used as values for
these options, respectively.
The backing setting can be used to expand block device information
to cover backing chains with recent libvirt versions.
The old API setting can be used in environments where recent
libvirt API additions are not available (e.g., RHEL 6 /
libvirt-0.10.2) to provide some of the metrics available with the
newer API. Regardless of the API version, no guest agent is
needed for the metrics.
Note that using non-root user typically requires also libvirt side
configuration; please refer to libvirt documentation for further
details on this.
Once the needed setup is ready, you can test the connection and
install the PMDA to enable access to the names and values for the
libvirt performance metrics. To install, do the following as
root:
# cd $PCP_PMDAS_DIR/libvirt
# ./connect
# ./Install
To uninstall, do the following as root:
# cd $PCP_PMDAS_DIR/libvirt
# ./Remove
pmdalibvirt is launched by pmcd(1) and should never be executed
directly. The Install and Remove scripts notify pmcd(1) when the
agent is installed or removed.
$PCP_PMDAS_DIR/libvirt/libvirt.conf
configuration file for the pmdalibvirt agent
$PCP_PMDAS_DIR/libvirt/connect
connection test helper using the pmdalibvirt agent
configuration
$PCP_PMDAS_DIR/libvirt/Install
installation script for the pmdalibvirt agent
$PCP_PMDAS_DIR/libvirt/Remove
undo installation script for the pmdalibvirt agent
$PCP_LOG_DIR/pmcd/libvirt.log
default log file for messages from the pmdalibvirt agent
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).
PCPIntro(1), pmcd(1), virsh(1) and libvirtd(8).
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 2025-02-02.
(At that time, the date of the most recent commit that was found
in the repository was 2025-01-30.) 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 PMDALIBVIRT(1)
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HTML rendering created 2025-02-02 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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