Ubuntu Manpages

pmdadbping

database response time and availability PMDA

Simple database response time measurement PMDA. dbprobe.pl(1) should be configured to use the type of DBI appropriate for your database, which includes: RDBMS flavour, user/password, delay between "ping" requests, and the SQL statement to use. pmdadbping runs dbprobe.pl(1), and exports the performance measurements it makes available as PCP metrics.

Configure dbprobe.pl(1) - it uses a configuration file from (in this order):

  • /etc/pcpdbi.conf
  • $PCP_PMDAS_DIR/dbping/dbprobe.conf

This file can contain overridden values (Perl code) for the settings listed at the start of dbprobe.pl, namely:

  • database name (see DBI(3) for details)
  • database user name
  • database pass word
  • SQL statement to measure (probe)
  • delay between probes

Once this is setup, you can access the names and values for the dbping performance metrics by doing the following as root:

        # cd $PCP_PMDAS_DIR/dbping
        # ./Install

If you want to undo the installation, do the following as root:

        # cd $PCP_PMDAS_DIR/dbping
        # ./Remove

pmdadbping 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/dbping/probes.stp
probe configuration file for stap(1), run by pmdadbping
$PCP_PMDAS_DIR/dbping/Install
installation script for the pmdadbping agent
$PCP_PMDAS_DIR/dbping/Remove
undo installation script for the pmdadbping agent
$PCP_LOG_DIR/pmcd/dbping.log
default log file for error messages from pmdadbping

pmcd(1), dbprobe.pl(1) and DBI(3).