If you want to use a column with a different datatype as metric column you may enter the column name with a cast: ip::text. The metric column suggestions will only contain columns with a text datatype (char,varchar,text).
POSTGRESQL DOCUMENTATION SERIES
If a value is selected, the Metric column field will be used as the series name. Selecting a value for the Metric column field is optional. The Time column field refers to the name of the column holding your time values. You can manually enter a fully qualified name (schema.table) like trics. To select a table or view not in your search_path In the FROM field, Grafana will suggest tables that are in the search_path of the database user. When you enter edit mode for the first time or add a new query Grafana will try to prefill the query builder with the first table that has a timestamp column and a numeric column. Select table, time column and metric column (FROM) Click on it and it will expand and show the raw interpolated SQL string that was executed. The query editor has a link named Generated SQL that shows up after a query has been executed, while in panel edit mode. You find the PostgreSQL query editor in the metrics tab in Graph or Singlestat panel’s edit mode. Make sure the user does not get any unwanted privileges from the public role. GRANT SELECT ON schema.table TO grafanareader GRANT USAGE ON SCHEMA schema TO grafanareader
POSTGRESQL DOCUMENTATION PASSWORD
To protect against this we highly recommend you create a specific PostgreSQL user with restricted permissions.Įxample: CREATE USER grafanareader WITH PASSWORD 'password' For example, statements like DELETE FROM user and DROP TABLE user would beĮxecuted. The queryĬould include any SQL statement. Grafana does not validate that the query is safe. The specified database and tables you want to query. The database user you specify when you add the data source should only be granted SELECT permissions on The following time identifiers are supported: Identifier Number followed by a valid time identifier, e.g. It’s important to note that this value needs to be formatted as a This option can also be overridden/configured in a dashboard panel under data source options. Recommended to be set to write frequency, for example 1m if your data is written every minute.
When enabled, Grafana uses time_bucket in the $_timeGroup macro to display TimescaleDB specific aggregate functions in the query builder (only available in Grafana 5.3+).Ī lower limit for the $_interval and $_interval_ms variables. The maximum amount of time in seconds a connection may be reused, default 14400/4 hours (Grafana v5.4+).ĭetermines which functions are available in the query builder (only available in Grafana 5.3+).Ī time-series database built as a PostgreSQL extension.
The maximum number of connections in the idle connection pool, default 2 (Grafana v5.4+). The maximum number of open connections to the database, default unlimited (Grafana v5.4+). Grafana v7.5+įile path or file content of SSL root certificate, client certificate and client key When SSL Mode is disabled, SSL Method and Auth Details would not be visible.ĭetermines whether the SSL Auth details will be configured as a file path or file content. The connection string for connecting to Postgres will not be correct and it may cause errors.ĭetermines whether or with what priority a secure SSL TCP/IP connection will be negotiated with the server. The IP address/hostname and optional port of your PostgreSQL instance. This is how you refer to the data source in panels and queries.ĭefault data source means that it will be pre-selected for new panels. To access PostgreSQL settings, hover your mouse over the Configuration (gear) icon, then click Data Sources, and then click the PostgreSQL data source. Only users with the organization admin role can add data sources.
POSTGRESQL DOCUMENTATION HOW TO
For instructions about how to add a data source to Grafana, refer to Add a data source. This topic explains options, variables, querying, and other options specific to this data source. Grafana ships with a built-in PostgreSQL data source plugin that allows you to query and visualize data from a PostgreSQL compatible database.
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