I have a 3 node cluster and i have set minimum master node to 1. My cluster was working fine these days. But now i am a find a issue, that whatever new index i create other than .kibana all are in yellow state. When i try to reroute the index i get the following error message.
"reason" : "[allocate_replica] allocation of [smarts-historical][0] on node {node2}{fBUkdNQ1StCKR0xq5AwV8A}{c_SuNyGARhWKXLuoBtgKQA}{lonlalkibsrv01}{192.168.10.11:9300} is not allowed, reason: [YES(shard has no previous failures)][YES(primary shard for this replica is already active)][YES(explicitly ignoring any disabling of allocation due to manual allocation commands via the reroute API)][NO(target node version [5.5.1] is older than the source node version [5.6.2])][YES(the shard is not being snapshotted)][YES(node passes include/exclude/require filters)][YES(the shard does not exist on the same node)][YES(enough disk for shard on node, free: [51.6gb], shard size: [0b], free after allocating shard: [51.6gb])][YES(below shard recovery limit of outgoing: [0 < 2] incoming: [0 < 2])][YES(total shard limits are disabled: [index: -1, cluster: -1] <= 0)][YES(allocation awareness is not enabled, set cluster setting [cluster.routing.allocation.awareness.attributes] to enable it)]"
I tried searching for disk usage and found /usr is used more than 15%, will that be a reason.