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 (VMs).

       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

           # 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

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 2023-12-22.
       (At that time, the date of the most recent commit that was found
       in the repository was 2023-12-16.)  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

Performance Co-Pilot               PCP                    PMDALIBVIRT(1)