pmdalibvirt(1) — Linux manual page


PMDALIBVIRT(1)             General Commands Manual            PMDALIBVIRT(1)

NAME         top

       pmdalibvirt - libvirt PMDA

DESCRIPTION         top

       pmdalibvirt is a Performance Metrics Domain Agent (PMDA) which
       extracts live performance data from libvirt hypervisor and domains

       See the libvirt documentation for detailed description of each

INSTALLATION         top

       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
           · oldapi

       By default, root, qemu:///system, False, 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.

FILES         top

              configuration file for the pmdalibvirt agent

              connection test helper using the pmdalibvirt agent

              installation script for the pmdalibvirt agent

              undo installation script for the pmdalibvirt agent

              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).

SEE ALSO         top

       PCPIntro(1), pmcd(1), virsh(1) and libvirtd(8).

COLOPHON         top

       This page is part of the PCP (Performance Co-Pilot) project.
       Information about the project can be found at ⟨⟩.
       If you have a bug report for this manual page, send it to  This page was obtained from the project's upstream
       Git repository ⟨⟩ on
       2020-08-13.  (At that time, the date of the most recent commit that
       was found in the repository was 2020-08-11.)  If you discover any
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       (which is not part of the original manual page), send a mail to

Performance Co-Pilot                 PCP                      PMDALIBVIRT(1)