08. Configure Alert Manager to Send Alerts from Prometheus

Edit Alert Manager Configuration Open the Alert Manager config file, and replace the config with this below.

sudo vi /usr/local/bin/alertmanager/alertmanager.yml

copy paste below line on to alertmanager.yml

https://github.com/DeekshithSN/Prometheus/blob/master/alertmeanager.yml

Check your configuration with the supplied amtool

/usr/local/bin/alertmanager/amtool check-config /usr/local/bin/alertmanager/alertmanager.yml

If all is ok, restart the Alert Manager service.

sudo service alertmanager restart
sudo service alertmanager status

Edit Prometheus Configuration Open the prometheus.yml configuration file and add the text below to the alerting section

sudo vi /usr/local/bin/prometheus/prometheus.yml

Add - localhost:9093 to your Alertmanager configuration section

alerting:
  alertmanagers:
  - static_configs:
    - targets:
      # alertmanager:9093
      - localhost:9093

Check the prometheus configuration with the supplied promtool.

/usr/local/bin/prometheus/promtool check config /usr/local/bin/prometheus/prometheus.yml

sudo service prometheus restart
sudo service prometheus status

Test Settings Check the Prometheus UI

[Status]-->[Runtime and Build Information]

Copy the url in the Alertmanagers section

http://localhost:9093/api/v1/alerts

Test it using curl

curl http://localhost:9093/api/v1/alerts

The response should be success.

Now Check the Alert Manager UI

and a new scrape target to the prometheus.yml configuration

  - job_name: 'alert-manager'
    static_configs:
    - targets: ['localhost:9093']

And restart

sudo service prometheus restart
sudo service prometheus status