my docker-compose for the master node of the ES cluster is the following:
` version: "3.6"
services:

elasticsearch:
container_name: clearml-elastic
environment:
ES_JAVA_OPTS: -Xms2g -Xmx2g
bootstrap.memory_lock: "true"
cluster.name: clearml-es
cluster.initial_master_nodes: clearml-es-n1, clearml-es-n2, clearml-es-n3
cluster.routing.allocation.node_initial_primaries_recoveries: "500"
cluster.routing.allocation.disk.watermark.low: 500mb
cluster.routing.allocation.disk.watermark.high: 500mb
cluster.routing.allocation.disk.watermark.flood_stage: 500mb
node.name: clearml-es-n1
network.host: 10.105.1.2
discovery.seed_hosts: 10.105.1.2, 10.105.1.3, 10.105.1.4
http.compression_level: "7"
reindex.remote.whitelist: '.'
xpack.monitoring.enabled: "false"
xpack.security.enabled: "false"
ulimits:
memlock:
soft: -1
hard: -1
nofile:
soft: 65536
hard: 65536
image: docker.elastic.co/elasticsearch/elasticsearch:7.6.2
restart: unless-stopped
volumes:
- /usr/share/elasticsearch
network_mode: host `