Section 1 · User commands

pmdamongodb.1

Package: pcp-doc

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PMDAMONGODB

NAME
DESCRIPTION
CONFIGURATION
INSTALLATION
FILES
PCP ENVIRONMENT
SEE ALSO

NAME

pmdamongodb − MongoDB database metrics

DESCRIPTION

pmdamongodb is a Performance Co-Pilot (PCP) Performance Metrics Domain Agent (PMDA) which extracts live performance data from a running MongoDB database server.

CONFIGURATION

Firstly, pmdamongodb requires installation of the pymongo support packages − a general purpose Python module for querying MongoDB.

Next, pmdamongodb reads an optional ini-style configuration file:

$PCP_PMDAS_DIR*/mongodb/mongodb.conf*

This file currently allows for two sections, one for configuring the MongoDB socket connection, the other for authentication.

[connection]
host (localhost)

Connect to the MongoDB socket on the given hostname.


	port (27017)		Connect to the MongoDB socket on the given port.

[authentication]
username (empty)

Username to connect to the database.

password (empty)

Password to connect to the database.

INSTALLATION

To install, the following must be done as root:

**# cd $PCP_PMDAS_DIR/mongodb

./Install**

To uninstall, the following must be done as root:

**# cd $PCP_PMDAS_DIR/mongodb

./Remove**

pmdamongodb 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

$PCP_PMDAS_DIR*/mongodb/mongodb.conf*

configuration file for the pmdamongodb agent

$PCP_PMDAS_DIR*/mongodb/Install*

installation script for the pmdamongodb agent

$PCP_PMDAS_DIR*/mongodb/Remove*

undo installation script for the pmdamongodb agent

$PCP_LOG_DIR*/pmcd/mongodb.log*

default log file for messages from the pmdamongodb agent

Note that the usual/default value for $PCP_PMDAS_DIR is /var/lib/pcp/pmdas and the default for $PCP_LOG_DIR is /var/log/pcp but these settings are platform dependent.

PCP ENVIRONMENT

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).