pmdaredis — Redis performance metrics domain agent (PMDA)
Description
This PMDA extracts performance data from sending the INFO command to a Redis (redis.io) server, which includes:
- General information about the Redis server
- Client connections
- Memory consumption
- Persistence statistics
- Replication statistics
- CPU consumption statistics
- Redis command statistics
- Redis Cluster statistics
- Database related statistics
The hostname (localhost), port (6379 by default) and other configuration information must be specified in the $PCP_PMDAS_DIR/redis/redis.conf file.
# cd $PCP_PMDAS_DIR/redis
# [ edit redis.conf ]
host=localhost.localdomain:6379
Once this is setup, you can access the names and values for the redis performance metrics by doing the following as root:
# cd $PCP_PMDAS_DIR/redis
# ./Install
To uninstall, do the following as root:
# cd $PCP_PMDAS_DIR/redis
# ./Remove
pmdaredis 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/redis/redis.conf
mandatory configuration file listing monitored redis instances
- $PCP_PMDAS_DIR/redis/Install
installation script for the pmdaredis agent
- $PCP_PMDAS_DIR/redis/Remove
undo installation script for the pmdaredis agent
- $PCP_LOG_DIR/pmcd/redis.log
default log file for error messages from pmdaredis
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).