add more parameters to configure

Signed-off-by: Jakub Sokołowski <jakub@status.im>

defaults/main.yml

@@ -20,6 +20,12 @@ alertmanager_domain: ~
 alertmanager_url: 'https://{{ alertmanager_domain | mandatory }}/'
 alertmanager_admin_email: ~
 
+# Route configuration
+alertmanager_group_by: ['alertname', 'cluster']
+alertmanager_group_wait: '30s'
+alertmanager_group_interval: '3m'
+alertmanager_repeat_interval: '1h'
+
 # VictorOps paging service
 alertmanager_victorops_api_key: ~
 alertmanager_victorops_service_url: ~

templates/alertmanager.yml.j2

@@ -1,3 +1,4 @@
+---
 global:
   # SMTP authentication information.
   smtp_from: '{{ alertmanager_smtp_from }}'
@@ -13,13 +14,13 @@ route:
   # Default destination fo all alerts
   receiver: 'admin-email'
   # How to group together alerts
-  group_by: ['alertname', 'cluster']
+  group_by: {{ alertmanager_group_by | to_yaml }}
   # Wait this much before initial notification to group them.
-  group_wait: 30s
+  group_wait: '{{ alertmanager_group_wait }}'
   # Wait before sending another batch for a group.
-  group_interval: 3m
+  group_interval: '{{ alertmanager_group_interval }}'
   # Wait this much to resend notifications.
-  repeat_interval: 1h
+  repeat_interval: '{{ alertmanager_repeat_interval }}'
 
   routes:
     # send all notifications to slack too