Elasticsearch Docker environment to build a cluster

mkdir -p /data/elasticsearch/data
mkdir -p /data/elasticsearch/config
mkdir -p /data/elasticsearch/logs
mkdir -p /data/elasticsearch/plugins

cd /data/elasticsearch/config
vi elasticsearch.yml

# Set the cluster name. The names of all nodes in the cluster must be consistent.
cluster.name: es-cluster
# Set the node name. The node name in the cluster must be unique.
node.name: es-node1
# Indicates whether the node will be the main node, true means yes; false means no
node.master: true
# Whether the current node is used to store data, yes: true, no: false
node.data: true
# Need to lock physical memory, yes: true, no: false
#bootstrap.memory_lock: true
# Listening address, used to access the es
network.host: 0.0.0.0
network.publish_host: xxx.xxx.xxx.1
# es http port provided externally, default 9200
http.port: 9200
# TCP's default listening port, default 9300
transport.tcp.port: 9300
# Set this parameter to ensure that the nodes in the cluster can know the other N nodes that are qualified as masters. The default is 1, for large clusters, you can set a larger value (2-4)
discovery.zen.minimum_master_nodes: 1
# The new configuration after es7.x is written into the device address of the candidate master node, which can be selected as the master node after the service is turned on
discovery.seed_hosts: ["xxx.xxx.xxx.1:9300","xxx.xxx.xxx.2:9300"]
discovery.zen.fd.ping_timeout: 1m
discovery.zen.fd.ping_retries: 5
# New configuration after es7.x, this configuration is needed to elect the master when a new cluster is initialized
cluster.initial_master_nodes: ["xxx.xxx.xxx.1:9300"]
# Whether to support cross-domain, yes: true, this configuration is required when using the head plug-in
http.cors.enabled: true
# "*" means that all domain names are supported
http.cors.allow-origin: "*"

cluster.name: es-cluster
node.name: es-node2
node.master: true
node.data: true
network.host: 0.0.0.0
network.publish_host: xxx.xxx.xxx.2
http.port: 9200
transport.tcp.port: 9300
discovery.zen.minimum_master_nodes: 1
discovery.seed_hosts: ["xxx.xxx.xxx.1:9300","xxx.xxx.xxx.2:9300"]
discovery.zen.fd.ping_timeout: 1m
discovery.zen.fd.ping_retries: 5
cluster.initial_master_nodes: ["xxx.xxx.xxx.1:9300"]
http.cors.enabled: true
http.cors.allow-origin: "*"

docker run -d --network=host --privileged=true -e ES_JAVA_OPTS="-Xms2048m -Xmx2048m" -e TAKE_FILE_OWNERSHIP=true --name es-node1 -v /data/elasticsearch/config/elasticsearch.yml:/usr/share/elasticsearch/config/elasticsearch.yml -v /data/elasticsearch/data:/usr/share/elasticsearch/data -v /data/elasticsearch/logs:/usr/share/elasticsearch/logs -v /data/elasticsearch/plugins:/usr/share/elasticsearch/plugins docker.elastic.co/elasticsearch/elasticsearch:7.6.2

docker run -d --network=host --privileged=true -e ES_JAVA_OPTS="-Xms2048m -Xmx2048m" -e TAKE_FILE_OWNERSHIP=true --name es-node2 -v /data/elasticsearch/config/elasticsearch.yml:/usr/share/elasticsearch/config/elasticsearch.yml -v /data/elasticsearch/data:/usr/share/elasticsearch/data -v /data/elasticsearch/logs:/usr/share/elasticsearch/logs -v /data/elasticsearch/plugins:/usr/share/elasticsearch/plugins docker.elastic.co/elasticsearch/elasticsearch:7.6.2

xxx.xxx.xxx.1 23 68 1 0.19 0.15 0.11 dilm * es-node1
xxx.xxx.xxx.2   9 96 4 1.21 0.48 0.28 dilm - es-node2

docker logs {containerId}

{
  "error": {
    "root_cause": [
      {
        "type": "master_not_discovered_exception",
        "reason": null
      }
     ],
  "type": "master_not_discovered_exception",
  "reason": null
  },
"status": 503
}

cluster.initial_master_nodes: ["xxx.xxx.xxx.1:9300"]