Scope/Description

• This article will show proper syntax in order to allow emails to be sent from alert manager

Prerequisites

• A running Ceph Cluster with the ceph dashboard configured with ceph-ansible
• Access to the cluster ansible-admin node
• An email address, mail server name and port you wish to send the alerts to

Steps

• Log in to the ansible admin node and edit “/etc/alertmanager/alertmanager.yml”

[root@osd1 ~]# vim /etc/alertmanager/alertmanager.yml
global:
  resolve_timeout: 5m
  smtp_smarthost: emailserverhostname:port
  smtp_from: 'fromemail@example.com'
  smtp_require_tls: true
  smtp_auth_username: ''
  smtp_auth_password: ''
route:
  group_by: ['alertname']
  group_wait: 10s
  group_interval: 10s
  repeat_interval: 1h
  receiver: 'ceph-dashboard'
receivers:
- name: 'ceph-dashboard'
  webhook_configs:
  - url: 'http://hostname:8443/api/prometheus_receiver'
  - url: 'http://hostname:8443/api/prometheus_receiver'
  - url: 'http://hostname:8443/api/prometheus_receiver'
  - url: 'http://hostname:8443/api/prometheus_receiver'
  email_configs:
   - to: 'exampleaddress@example.com'

• Restart the alert manager service:

[root@osd1 ~]# systemctl restart alertmanager

Verification

• Check the status of alert manager to ensure the service is running:

[root@osd1 ~]# systemctl status alertmanager

Troubleshooting

• If the alert manager service is failing you can check the logs for alert manager:

[root@osd1 ~]# docker logs alertmanager

• Pay close attention to syntax in the alertmanager.yml file. It is very common for the service to fail due to a syntax error.