Slave cannot connect to master in Elasticsearch? - elasticsearch

Question

I have 2 vps, on which i have installed ES. I try combine it to one cluster.
master node config
version: '3.9'
services:
master:
image: elasticsearch:8.1.1
container_name: master
environment:
- node.name=master
- cluster.name=elastic-cluster
- network.host=0.0.0.0
- discovery.seed_hosts=10.126.107.238:1029, 10.126.107.236:1029
- cluster.initial_master_nodes=10.126.107.238
- "node.roles=master"
- ELASTIC_PASSWORD=${ELASTIC_PASSWORD}
- "ES_JAVA_OPTS=-Xms512m -Xmx512m"
- "bootstrap.memory_lock=true"
- "xpack.security.enabled=false"
- "xpack.security.transport.ssl.enabled=false"
mem_limit: ${MEM_LIMIT}
ulimits:
memlock:
soft: -1
hard: -1
volumes:
- master-data:/usr/share/elasticsearch/data
ports:
- 1028:9200
- 1029:9300
volumes:
master-data:
driver: local
And node01 config (data node)
version: '3.9'
services:
node01:
image: elasticsearch:8.1.1
container_name: node01
environment:
- node.name=node01
- cluster.name=elastic-cluster
- network.host=0.0.0.0
- discovery.seed_hosts=10.126.107.238:1029, 10.126.107.236:1029
- cluster.initial_master_nodes=10.126.107.238
- "node.roles=data"
- ELASTIC_PASSWORD=${ELASTIC_PASSWORD}
- "ES_JAVA_OPTS=-Xms512m -Xmx512m"
- "bootstrap.memory_lock=true"
- "xpack.security.enabled=false"
- "xpack.security.transport.ssl.enabled=false"
mem_limit: ${MEM_LIMIT}
ulimits:
memlock:
soft: -1
hard: -1
volumes:
- master-data:/usr/share/elasticsearch/data
ports:
- 1028:9200
- 1029:9300
volumes:
master-data:
driver: local
When node01 tries to connect to cluster - its raise error
node01 | {"#timestamp":"2022-08-07T08:15:38.096Z", "log.level":
"WARN", "message":"[connectToRemoteMasterNode[10.126.107.238:1029]]
completed handshake with
[{master}{5_tf1e03S4CYx_v4j4tTyw}{4LhWtmyPTaGKY5x_4Sf10g}{192.168.16.2}{192.168.16.2:9300}{m}{xpack.installed=true}]
but followup connection failed", "ecs.version":
"1.2.0","service.name":"ES_ECS","event.dataset":"elasticsearch.server","process.thread.name":"elasticsearch[node01][generic][T#2]","log.logger":"org.elasticsearch.discovery.HandshakingTransportAddressConnector","elasticsearch.node.name":"node01","elasticsearch.cluster.name":"elastic-cluster","error.type":"org.elasticsearch.transport.ConnectTransportException","error.message":"[master][192.168.16.2:9300]
connect_exception","error.stack_trace":"org.elasticsearch.transport.ConnectTransportException:
[master][192.168.16.2:9300] connect_exception\n\tat
org.elasticsearch.transport.TcpTransport$ChannelsConnectedListener.onFailure(TcpTransport.java:1107)\n\tat