How to count all master in radish cluster?

Question

Redis

Hello. There is a redis cluster of several servers (5).

The problem is this: the master and slave between two servers periodically change places. The customer needs to monitor / counter the total number of masters in the cluster.

Deploy Sentinel - hemorrhoids and crutches.

Any thoughts?

Answer 1

For example, a script that will run
redis-cli info replication
for each node
AND will parse the response

# Replication

role:master

How many responses contain role:master, so many masters.