What is the output of the rladmin status command?
The output of the rladmin status command is explained as below:
- A Redis cluster is composed of Nodes (like machines or VMs) and Shards (the Redis instances where the data is actually held)
- Among the Nodes in a cluster there will always be one Master whose job it is to coordinate heartbeat , watch dog and statistical activities. In the sample rladmin status output you see this in the second column under ROLE
- Any Redis database is made up of Shards (to hold the data) and it can be configured as high availability among Shards. In this case there is 1 db called uipath-orchestrator which has 2 shards: 1 master and 1 slave (replica) and the slave Shard is an exact copy of the Master Shard. In the columns MASTER and SLAVE the number displayed is not a status. It is a count. It tells how many master or slave Shards there are per node.
- If a Master node is killed, there is a re-election and a new Master is found among the remaining Nodes.
- If a Node containing a Master Shard is stopped, it will failover to the Slave which will become the new Master