pmdaunbound1

Overview

pmdaunbound is a Performance Metrics Domain Agent (PMDA) which exports metric values about the Unbound DNS resolver using the unbound-control(8) stats_noreset command.

This gives lots of insight into query types, response time, cache hits/misses, etc. Please see the unbound-control(8) man page for explanation about each statistics counter.

Further details on the Unbound DNS resolver can be found at https://unbound.net/.

Installation

Install the Unbound PMDA by using the Install script as root:

# cd $PCP_PMDAS_DIR/unbound
# ./Install

To uninstall, do the following as root:

# cd $PCP_PMDAS_DIR/unbound
# ./Remove

pmdaunbound 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/unbound/Install

installation script for the pmdaunbound agent

$PCP_PMDAS_DIR/unbound/Remove

undo installation script for the pmdaunbound agent

$PCP_LOG_DIR/pmcd/unbound.log

default log file for error messages from pmdaunbound

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).