I have an Elasticsearch cluster of 2 nodes, both running ES2.1.1, but I have had random crashes where the master node will fail, then sometime after the second node will also fail.
All nodes are clean ES2.1.1 installations, on Amazon Linux, using the RPM installer, with plugins
head installed. There is minimum configuration of the elasticsearch.yml file to enable cluster replication within AWS.
If I start the elasticsearch process back, the system runs fine for 4+ days fine then crashes again.
Honestly, I've looked through the various ES logs and I cannot see any obvious exceptions.
I'm hoping someone here can help me determine why this is happening?