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
Specify address via a url matching:
postgres://[pqgotest[:password]]@localhost[/dbname]?sslmode=[disable|verify-ca|verify-full]
All connection parameters are optional. Without the dbname parameter, the driver will default to a database with the same name as the user. This dbname is just for instantiating a connection with the server and doesn't restrict the databases we are trying to grab metrics for.
A list of databases to explicitly ignore. If not specified, metrics for all databases are gathered. Do NOT use with the 'databases' option.
ignored_databases = ["postgres", "template0", "template1"]
A list of databases to pull metrics about. If not specified, metrics for all databases are gathered. Do NOT use with the 'ignored_databases' option.
databases = ["app_production", "testing"]
Add the sslkey, sslcert and sslrootcert options to your DSN:
host=localhost user=pgotest dbname=app_production sslmode=require sslkey=/etc/telegraf/key.pem sslcert=/etc/telegraf/cert.pem sslrootcert=/etc/telegraf/ca.pem
[[inputs.postgresql]]
address = "postgres://telegraf@localhost/someDB"
ignored_databases = ["template0", "template1"]