ElasticSearch Unassigned Shard - elasticsearch

Question

I have 2 nodes in elastic search cluster with 8 CPU and 16 GB RAM. I have set ES_HEAP_SIZE to 10 GB.
In my yml configuration file on both machines i have set
index.number_of_shards: 5
index.number_of_replicas: 1
And both machines are allowed as master/data true.Now problem is my 0th shard of node 1 is unassigned after restart.I tried
for shard in $(curl -XGET http://localhost:9201/_cat/shards | grep UNASSIGNED | awk '{print $2}'); do
echo "processing $shard"
curl -XPOST 'localhost:9201/_cluster/reroute' -d '{
"commands" : [ {
"allocate" : {
"index" : "inxn",
"shard" : '$shard',
"node" : "node1",
"allow_primary" : true
}
}
]
}'
done
it does not give any error and says acknowledged true and show status of shard to initialize but when i view shard its still uninitialized.
Am I doing anything wrong in setting? Should I make both node as master/data true and on both machines set shard:5 and replica:1
Any help or suggestion would be greatly appreciated.
Thanks

Answer 1

I did a trick to solve the same , I renamed 0 folder under indices on node1 and did a force full assign 0th shard on node1 and it worked for me.
curl -XPOST 'localhost:9201/_cluster/reroute' -d '{
"commands" : [ {
"allocate" : {
"index" : "inxc",
"shard" : 0,
"node" : "node1",
"allow_primary" : true
}
}
]
}'