This article shows how to add a new source in Grafana with screenshots. The source is InluxDB 1.8 with basic authentication enabled. The main purpose of this article is to give the user knowledge of how to:
- Enable basic authentication in InfluxDB
- Create users – administrative and ordinary ones in InfluxDB and give permissions for the database.
- Add the InfluxDB source in Grafana using web interface. with basic authentication enabled with credentials created in the article.
It is supposed the InfluxDB is installed and running on the loopback 127.0.0.1, at least. If the InfluxDB service is not local for the Grafana service replace the 127.0.0.1 with the appropriate IP and adjust the firewall such that it accepts connections from the Grafana server IP. For installing InfluxDB with detailed information including firewall modifications there is another article here – Monitor and analyze with Grafana, InfluxDB 1.8 and collectd under CentOS Stream 9.
No installation information for InfluxDB or Grafana is included in this article and if they are needed check out the article above.
STEP 1) Create users in InfluxDB.
By default, InfluxDB authentication is disabled and no users are required to access and manage the service and the databases. That’s why, the first thing to do is to create an administrative user, which will manage the databases when the basic authentication will be enabled. At the same time, when creating the administrative user, ordinary users may be created, too.
To connect to the InfluxDB to manage the service the InfluxDB command-line tool influx will be used. influx connects to http://127.0.0.1:8086 – an HTTP interface to access the InfluxDB service.
[root@srv ~]# influx Connected to http://localhost:8086 version 1.8.10 InfluxDB shell version: 1.8.10 > CREATE USER admin WITH PASSWORD 'aiqu8ohth9Cheeshai]c' WITH ALL PRIVILEGES > SHOW USERS user admin ---- ----- admin true > CREATE USER collectd WITH PASSWORD 'ohg|ahTh9Sa|quoh8zoh' > GRANT READ ON "collectd" TO "collectd" > SHOW USERS user admin ---- ----- admin true collectd false >
First, the administrative user with admin name is created, and then the ordinary user with the collectd name. For the ordinary user, the access privileges are granted only for READ on the collectd database. It is typical to name the database and the user accessing it with the same name. The format of the GRANT command is the following:
GRANT "[PRIVILEGES]" ON "[database_name]" TO "[user_name]"
READ privileges are enough for Grafana to access the data.
Keep on reading!