How to check your prometheus.yml is valid or not

How to check your prometheus.yml is valid or not

Its always a good pratice to check that your configuration is valid before pushing to production. Prometheus will fail to reload if there is a bad configuration. Thus it's wise to check that the configuration is good before deploying it.

To facilitate this, promtool which comes with Prometheus has a check config command. Let's check a prometheus config:

• Download and extract prometheus.

wget https://github.com/prometheus/prometheus/releases/download/v2.5.0/prometheus-2.5.0.linux-amd64.tar.gz
tar -xzf prometheus-*.tar.gz
cd prometheus-*

• Now check the configuration

You see an error. Now fix the Prometheus file and  check the config again.