For a MongoDB server that is in a cluster versus a single node, different user permissions needs to be added to view metrics.

If the user permissions for the single node are created on a cluster, then it will get Unauthorized errors.

Please consider adding this to the template instructions:

For cluster:

db.createUser(
{user: “zbx_monitor”,pwd: “************”,
roles: [{ "role": "clusterMonitor", "db": "admin" },{ "role": "readAnyDatabase", "db": "admin" }],
}
) 

For single node:

db.createUser(
{user: “zbx_monitor”,pwd: “************”,
roles: [{ "role": "readAnyDatabase", "db": "admin" }],
}
) 

Regards.-