ES config

    path.data: /var/lib/elasticsearch
    path.logs: /var/log/elasticsearch
    path.plugins: /usr/share/elasticsearch/plugins

    node.name: [node]

    cluster.name:  elk

    node.master: [true if master, else false]
    node.data: [true if data, else false


    http.enabled: true

    cloud.aws.access_key: **********************
    cloud.aws.secret_key: ************************************************
    cloud.aws.region: us-west-2
    cloud.protocol: https
    cloud.ec2.protocol: https
    cloud.s3.protocol: https
    cloud.node.auto_attributes: true

    discovery.type: ec2
    discovery.ec2.tag.Cluster: elk
    discovery.ec2.ping_timeout: 10s

    discovery.zen.minimum_master_nodes: 2
    discovery.zen.ping.multicast.enabled: false
    discovery.zen.ping.timeout: 10s
    discovery.zen.ping.retries: 10

    bootstrap.mlockall: true
    script.disable_dynamic: false

    monitor.jvm.gc.ParNew.warn: 1000ms
    monitor.jvm.gc.ParNew.info: 700ms
    monitor.jvm.gc.ParNew.debug: 400ms

    monitor.jvm.gc.ConcurrentMarkSweep.warn: 10s
    monitor.jvm.gc.ConcurrentMarkSweep.info: 5s
    monitor.jvm.gc.ConcurrentMarkSweep.debug: 2s

    ####### the following section will only appear in /etc/elasticsearch/elasticsearch.yml if data node #######
    index.number_of_shards: 3
    index.number_of_replicas: 2

    indices.ttl.interval: 60s
    indices.ttl.bulk_size: 100

    index.search.slowlog.threshold.query.warn: 10s
    index.search.slowlog.threshold.query.info: 5s
    index.search.slowlog.threshold.query.debug: 2s
    index.search.slowlog.threshold.query.trace: 500ms

    index.search.slowlog.threshold.fetch.warn: 1s
    index.search.slowlog.threshold.fetch.info: 800ms
    index.search.slowlog.threshold.fetch.debug: 500ms
    index.search.slowlog.threshold.fetch.trace: 200ms

    index.indexing.slowlog.threshold.index.warn: 10s
    index.indexing.slowlog.threshold.index.info: 5s
    index.indexing.slowlog.threshold.index.debug: 2s
    index.indexing.slowlog.threshold.index.trace: 500ms
    #########################################################################