zabbix 3.0 + pg_monz 2.0 + PostgreSQL streaming replication

Question

I have a Zabbix 3.0 instance on CentOS 7.2, I've added the pg_monz extension for monitoring my PostgreSQL streaming replication.

I currently have this in my Zabbix interface;

• DB1

  • host_groups
    • PostgreSQL
    • Linux Servers
  • templates
    • Template OS Linux
    • Template App PostgreSQL SR
    • Template App PostgreSQL SR Cluster

• DB2

  • host_groups;
    • PostgreSQL
    • Linux Servers
  • templates;
    • Template OS Linux
    • Template App PostgreSQL SR

On the 'latest data' tab, filtered to host_group PostgreSQL

• DB1

  • pg.cluster.status
    • all items greyed out

• DB2

  • pg.cluster.status
    • Number of primary server 1
    • Number of running PostgreSQL server 1
    • Number of standby server 0

Can someone please clarify the setup for monitoring streaming replication, I'm sure I've mixed something up in my templates.

I would expect DB1 to show one primary, two running postgresql server and one standby server. The documentation is a little vague for pg_monz.