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update postgres scaler docs with metricName #313

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Dec 2, 2020
Merged

update postgres scaler docs with metricName #313

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e02a949
update postgres scaler docs with metricName
ycabrer Nov 30, 2020
db73d02
Fix KEDA casing
ycabrer Dec 2, 2020
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7 changes: 5 additions & 2 deletions content/docs/2.1/scalers/postgresql.md
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Original file line number Diff line number Diff line change
Expand Up @@ -33,8 +33,9 @@ Finally, a user inserts a query that returns the desired value

- `query:` What query to poll postgresql with. Query must return an integer.
- `targetQueryValue` - a threshold that is used as `targetAverageValue` in HPA.
- `metricName` - an optional name to assign to the metric. If not set KEDA will generate a name based on either the connection string if set or the db name. If using more than one trigger it is required that all metricNames be unique.

This is an example of using a full connection string:
This is an example of using a full connection string with `AIRFLOW_CONN_AIRFLOW_DB` set as `postgresql://test@localhost`:

```yaml
triggers:
Expand All @@ -43,6 +44,7 @@ triggers:
connectionFromEnv: AIRFLOW_CONN_AIRFLOW_DB
query: "SELECT ceil(COUNT(*)::decimal / 16) FROM task_instance WHERE state='running' OR state='queued'"
targetQueryValue: 1
metricName: backlog_process_count #optional. Generated value would be `postgresql-postgresql---test@localhost`
```

While this is an example of specifying each parameter:
Expand All @@ -56,10 +58,11 @@ triggers:
host: postgres-svc.namespace.cluster.local #use the cluster-wide namespace as KEDA
#lives in a different namespace from your postgres
port: "5432"
dbName: postgresql
dbName: test_db_name
sslmode: disable
query: "SELECT ceil(COUNT(*)::decimal / 16) FROM task_instance WHERE state='running' OR state='queued'"
targetQueryValue: 1
metricName: backlog_process_count #optional. Generated value would be `postgresql-test_db_name`
```

### Authentication Parameters
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