{
    "captainVersion": "2",
    "documentation": "Elasticsearch is a distributed, RESTful search and analytics engine. This image can be used for single nodes and cluster setups. Look at https://www.elastic.co/guide/en/elasticsearch/reference/current/docker.html for further assistance using Elasticsearch with docker.",
    "description": "Elasticsearch is a search engine based on the Lucene library",
    "dockerCompose": {
        "version": "3.3",
        "services": {
            "$$cap_appname": {
                "image" : "docker.elastic.co/elasticsearch/elasticsearch:$$cap_elasticsearch_version",
                "volumes": [
                    "$$cap_appname-elasticsearch-data:/usr/share/elasticsearch/data"
                ],
                "restart": "always",
                "environment": {
                    "ES_JAVA_OPTS": "-Xms512m -Xmx512m",
                    "cluster.name": "$$cap_elasticsearch_cluster_name",
                    "http.port": "$$cap_container_port",
                    "node.master": "$$cap_elasticsearch_node_master",
                    "node.data": "$$cap_elasticsearch_node_data",
                    "discovery.zen.minimum_master_nodes": "$$cap_elasticsearch_minimum_master_nodes",
                    "discovery.zen.ping.unicast.hosts": "$$cap_elasticsearch_unicast_hosts"
                },
                "containerHttpPort": "$$cap_container_port"
            }
        }
    },
    "instructions": {
        "start": "Elasticsearch startearch engine. Be sure to extend the virtual memory on all your hosts! (increase \"echo 'vm.max_map_count=262144' >> /etc/sysctl.conf\" and restart \"sysctl -p\")",
        "end": "Deployment of Elasticsearch is finished. You might see 502 errors for the next 2 minutes. Goto <YOUR-APP-URL>/_cat/health to check the health of your cluster."
    },
    "variables": [{
            "id": "$$cap_elasticsearch_version",
            "label": "Elasticsearch Version Tag ",
            "description": "Checkout the releases overview: https://www.elastic.co/de/downloads/elasticsearch",
            "defaultValue": "6.7.1",
            "validRegex": "/^([^\\s^\\/])+$/"
        },{
            "id": "$$cap_elasticsearch_cluster_name",
            "label": "Cluster Name",
            "description": "Only nodes within the same cluster name can be combined",
            "defaultValue": "elasticsearch-cluster",
            "validRegex": "/^([^\\s^\\/])+$/"
        },{
            "id": "$$cap_elasticsearch_unicast_hosts",
            "label": "Unicasts hosts",
            "description": "References to other node to attach to. (for example: srv-captain--XXX)",
            "defaultValue": "false",
            "validRegex": "/^([^\\s^\\/])+$/"
        },{
            "id": "$$cap_elasticsearch_node_data",
            "label": "Node Data",
            "description": "Should the node used for storing data? (true / false)",
            "defaultValue": "true",
            "validRegex": "/^([^\\s^\\/])+$/"
        },{
            "id": "$$cap_elasticsearch_node_master",
            "label": "Node Master",
            "description": "Define node as master-eligible (usual first node YES, others NO).",
            "defaultValue": "true",
            "validRegex": "/^([^\\s^\\/])+$/"
        },{
            "id": "$$cap_elasticsearch_minimum_master_nodes",
            "label": "Minimum Master Nodes",
            "description": "Define minimum amount of master (N) ( best practice: ceil(N/2 + 1) ).",
            "defaultValue": "1",
            "validRegex": "/^([0-9])+$/"
        },{
            "id": "$$cap_container_port",
            "label": "Container TCP Port",
            "defaultValue": "9200",
            "description": "Internal port for Elasticsearch the container listens to.",
            "validRegex": "/^([0-9])+$/"
        }
    ]
}