elasticsearch.yml

cluster.name: development

node:
    name: ${HOSTNAME}
#    max_local_storage_nodes: 1

path.data: /opt/data/elasticsearch

bootstrap.mlockall: true

network.host: 0.0.0.0

transport.tcp.compress: true

discovery:
  zen:
    minimum_master_nodes: 5
    ping.multicast.enabled: true
    ping_timeout: 5s

# was uncommented before the failure
#gateway:
#  expected_nodes: 8 
#  recover_after_nodes: 8
#  recover_after_time: 5m

indices:
  store:
    throttle:
      max_bytes_per_sec: 60mb
  indices:
    recovery:
      max_bytes_per_sec: 60mb

index.store.type : mmapfs

cluster.routing.allocation.node_concurrent_recoveries: 3

action.disable_delete_all_indices: true

# was uncommented before the failure
#metrics:
#    graphite:
#        host: ...
#        every: 2m
#        prefix: elasticsearch.${HOSTNAME}

### ANALYSIS ###
....