telegraf/plugins/inputs/postgresql/README.md

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# PostgreSQL plugin
This postgresql plugin provides metrics for your postgres database. It currently works with postgres versions 8.1+. It uses data from the built in _pg_stat_database_ and pg_stat_bgwriter views. The metrics recorded depend on your version of postgres. See table:
```
pg version 9.2+ 9.1 8.3-9.0 8.1-8.2 7.4-8.0(unsupported)
--- --- --- ------- ------- -------
datid* x x x x
datname* x x x x
numbackends x x x x x
xact_commit x x x x x
xact_rollback x x x x x
blks_read x x x x x
blks_hit x x x x x
tup_returned x x x
tup_fetched x x x
tup_inserted x x x
tup_updated x x x
tup_deleted x x x
conflicts x x
temp_files x
temp_bytes x
deadlocks x
blk_read_time x
blk_write_time x
stats_reset* x x
```
_* value ignored and therefore not recorded._
More information about the meaning of these metrics can be found in the [PostgreSQL Documentation](http://www.postgresql.org/docs/9.2/static/monitoring-stats.html#PG-STAT-DATABASE-VIEW)