NAME

       pmdabind2 - BIND performance metrics domain agent (PMDA)

DESCRIPTION

       This  PMDA extracts performance data from BIND (Berkeley Internet Name Domain).  It enables collection of
       most of the statistics metrics from the Bind server version 9 or later, which includes:

       • overall memory statistics

       • overall  per-query  statistics  (general  queries,  EDNS/truncated  responses,  Update/Notify/AXFR/IXFR
         messages)

       • overall error statistics (Rejected, SERVFAIL, Update/XFR failures ...)

       • overall statistics per transport protocol, EDNS and per version of IP protocol

       • resolver statistics (successes, errors, round-trip times in several ranges)

       • detailed per-socket statistics with respect to the transport protcol and IP version including errors

       • detailed per-file-descriptor statistics including errors

       The  PMDA performs per-second collection of the whole data set (148 metrics on the test environment) with
       modest requirements (2% CPU usage on Intel i7-4700MQ @2.4 GHz, cca 30 MB RAM).

       If more than 1 requests/sec is performed, the memoized values are used so that the  statistics  interface
       of the Bind server does not get overloaded.

INSTALLATION

       Configure  BIND  to  export  XML  statistics via its REST interface.  This requires BIND configuration to
       enable statistics exporting locally (at least).

           statistics-channels {
               inet 127.0.0.1 port 8080 allow { 127.0.0.1; };
           }
           options { zone-statistics yes; }

       The hostname (localhost), port (8080 above) and other configuration information must be specified in both
       the BIND configuration file as well as the $PCP_PMDAS_DIR/bind2/bind2.conf file.

             # cd $PCP_PMDAS_DIR/bind2
             # [ edit bind2.conf ]
               host=localhost.localdomain:8080

       Once  this  is  setup, you can access the names and values for the bind2 performance metrics by doing the
       following as root:

             # cd $PCP_PMDAS_DIR/bind2
             # ./Install

       To uninstall, do the following as root:

             # cd $PCP_PMDAS_DIR/bind2
             # ./Remove

       pmdabind2 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/bind2/bind2.conf
           mandatory configuration file listing monitored bind2 instances

       $PCP_PMDAS_DIR/bind2/Install
           installation script for the pmdabind2 agent

       $PCP_PMDAS_DIR/bind2/Remove
           undo installation script for the pmdabind2 agent

       $PCP_LOG_DIR/pmcd/bind2.log
           default log file for error messages from pmdabind2

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).

SEE ALSO

       PCPIntro(1), pmcd(1), pmdanamed(1), named.conf(5) and named(8).