Update README.md (#2719)

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Jeff Zellner 2017-04-25 14:17:15 -06:00 committed by Daniel Nelson
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# PostgreSQL plugin
This postgresql plugin provides metrics for your postgres database. It has been
designed to parse ithe sql queries in the plugin section of your telegraf.conf.
designed to parse SQL queries in the plugin section of your `telegraf.conf`.
For now only two queries are specified and it's up to you to add more; some per
query parameters have been added :
The example below has two queries are specified, with the following parameters:
* The SQl query itself
* The minimum version supported (here in numeric display visible in pg_settings)
* A boolean to define if the query have to be run against some specific
* variables (defined in the databaes variable of the plugin section)
* The list of the column that have to be defined has tags
* The SQL query itself
* The minimum PostgreSQL version supported (the numeric display visible in pg_settings)
* A boolean to define if the query has to be run against some specific database (defined in the `databases` variable of the plugin section)
* The name of the measurement
* A list of the columns to be defined as tags
```
[[inputs.postgresql_extensible]]
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# or a simple string:
# host=localhost user=pqotest password=... sslmode=... dbname=app_production
#
# All connection parameters are optional. #
# 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
@ -65,7 +64,7 @@ query parameters have been added :
```
The system can be easily extended using homemade metrics collection tools or
using postgreql extensions ([pg_stat_statements](http://www.postgresql.org/docs/current/static/pgstatstatements.html), [pg_proctab](https://github.com/markwkm/pg_proctab),[powa](http://dalibo.github.io/powa/)...)
using postgreql extensions ([pg_stat_statements](http://www.postgresql.org/docs/current/static/pgstatstatements.html), [pg_proctab](https://github.com/markwkm/pg_proctab) or [powa](http://dalibo.github.io/powa/))
# Sample Queries :
- telegraf.conf postgresql_extensible queries (assuming that you have configured