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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 | DESCRIPTION | INSTALLATION | FILES | PCP ENVIRONMENT | SEE ALSO | COLOPHON |
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PMDAHAPROXY(1) General Commands Manual PMDAHAPROXY(1)
pmdahaproxy - HAProxy PMDA
pmdahaproxy is a Performance Metrics Domain Agent (PMDA) which
extracts live performance data from HAProxy statistics socket or
URL.
By default the HAProxy stats socket is used to retrieve the
metric but if the optional URL option is set (see below), then
the HAProxy URL is used instead.
See the HAProxy documentation for detailed description of each
metric.
pmdahaproxy reads an optional ini-style configuration file
• $PCP_PMDAS_DIR/haproxy/haproxy.conf
This file can contain in its [pmda] section overriding values for
the following PMDA options:
• user
• socket
By default, root and /var/lib/haproxy/stats, are used as values
for these options, respectively.
The section can also contain the following parameters:
• url
• auth
• pass
When the url option is defined, URL connection to HAProxy is
used. pmdahaproxy expects CSV data from the HAProxy URL; an
example of a compatible URL is http://127.0.0.1:9000/?stats;csv .
Note that the HAProxy statistics socket and/or URL need to be
separately enabled in the HAProxy configuration file; please
refer to the HAProxy configuration documentation for details.
Depending on system and HAProxy configuration, using non-root
user may also be possible, especially with URL based connections.
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
HAProxy performance metrics. To install, do the following as
root:
# cd $PCP_PMDAS_DIR/haproxy
# ./connect
# ./Install
To uninstall, do the following as root:
# cd $PCP_PMDAS_DIR/haproxy
# ./Remove
pmdahaproxy 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/haproxy/haproxy.conf
configuration file for the pmdahaproxy agent
$PCP_PMDAS_DIR/haproxy/connect
connection test helper using the pmdahaproxy agent
configuration
$PCP_PMDAS_DIR/haproxy/Install
installation script for the pmdahaproxy agent
$PCP_PMDAS_DIR/haproxy/Remove
undo installation script for the pmdahaproxy agent
$PCP_LOG_DIR/pmcd/haproxy.log
default log file for messages from the pmdahaproxy 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), haproxy(1) and pmcd(1).
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 [email protected]. 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
[email protected]
Performance Co-Pilot PCP PMDAHAPROXY(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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