Configure multiple emails for Alertmanager notifications¶

By default, you can set only one email for notifications through Alertmanager during the deployment model creation. However, you can configure Alertmanager to send notifications to multiple emails as required.

To configure multiple emails for Alertmanager notifications:

1. Open your Git project repository with Reclass model on the cluster level.

2. In the classes/cluster/cluster_name/stacklight/server.yml file, specify the emails as required, for example, by splitting the alerts by severity as shown below.

   Example:

   parameters:
     prometheus:
       alertmanager:
         enabled: true
         config:
           route:
             routes:
               email-common:
                 receiver: SMTP-common
                 continue: true
               email-critical:
                 receiver: SMTP-critical
                 match_re:
                   - label: severity
                     value: critical
                 continue: true
           receiver:
             SMTP-common:
               enabled: true
               email_configs:
                 smtp_server:
                   to: common@email.com
                   from: ${_param:alertmanager_notification_email_from}
                   auth_username: ${_param:alertmanager_notification_email_username}
                   auth_password: ${_param:alertmanager_notification_email_password}
                   smarthost: ${_param:alertmanager_notification_email_host}
                   require_tls: ${_param:alertmanager_notification_email_require_tls}
                   send_resolved: true
             SMTP-critical:
               enabled: true
               email_configs:
                 smtp_server:
                   to: critical@email.com
                   from: ${_param:alertmanager_notification_email_from}
                   auth_username: ${_param:alertmanager_notification_email_username}
                   auth_password: ${_param:alertmanager_notification_email_password}
                   smarthost: ${_param:alertmanager_notification_email_host}
                   require_tls: ${_param:alertmanager_notification_email_require_tls}
                   send_resolved: true
   

3. Log in to the Salt Master node.

4. Apply the following state:

   salt -C 'I@docker:swarm and I@prometheus:server' state.sls prometheus.alertmanager -b 1