I want to set an alert if my redis server goes down

I just tried to set like this, but got error.
Failed to evaluate queries and expressions: failed to execute query A: ERR command is not allowed.
Can anyone help me to set the alert

Does CLUSTER INFO return a numeric value? Also click the Stat or Table bottom right, what do one of those dhow?

Tried with Info options where further can see cluster option(even has server option too)
For cluster option showing stat as 0

where as for server option its giving error (Failed to evaluate queries and expressions: input data must be a wide series but got type not (input refid))

Can you show us documentation for that option?

I don’t see any much information/documentation for server option.