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   pmdaopenmetrics    ( 1 )

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DYNAMIC METRIC NAMES

As described above, changes and new additions can be made to
       files in the configuration directory without having to restart
       the PMDA.  These changes are detected automatically and the PCP
       metric names below openmetrics in the PMNS will be updated
       accordingly, i.e. new metrics will be dynamically added and/or
       existing metrics removed.  In addition, pmdaopenmetrics honors
       the PMCD_NAMES_CHANGE pmFetch(3) protocol that was introduced in
       PCP version 4.0.  In particular, if openmetrics metrics are being
       logged by a PCP version 4.0 or later pmlogger(1), new metrics
       that appear as a result of changes in the PMDA configuration
       directory will automatically start to be logged, provided the
       root of the openmetrics PMDA namespace is configured for logging
       in the pmlogger configuration file.  See pmlogger(1) for details.
       An example of such a pmlogger configuration file is :

          log mandatory on 2 second {
               # log all metrics below the root of the openmetrics namespace
               openmetrics
          }