elasticsearch - Docker中的ElasticSearch群集始终在3个节点的配置中关闭一个主机

Question

我在以下三个Docker容器docker-compose.yml中运行elasticsearch cluster。

当我运行它们中的任意两个时，可以设置群集的状态为绿色，但是当我启动第三个时，群集中的一个节点被强制关闭(docker容器退出)，并且没有错误消息记录在关闭elasticsearch节点。

节点1 docker-compose.yml:

version: '2'
services:
elasticsearch:
image: docker.elastic.co/elasticsearch/elasticsearch:5.4.1
container_name: elasticsearch1
environment:
  - cluster.name=MoquiElasticSearch
  - bootstrap.memory_lock=true
  - discovery.zen.minimum_master_nodes=2
  - xpack.security.enabled=false
  - transport.publish_host=192.168.2.101
  - http.publish_host=192.168.2.101
  - discovery.zen.ping.unicast.hosts=192.168.2.101:9301,192.168.2.101:9302
  - "ES_JAVA_OPTS=-Xms512m -Xmx512m"
  - TZ=Asia/Shanghai
ulimits:
  memlock:
    soft: -1
    hard: -1
mem_limit: 1g
ports:
  - 9200:9200
  - 9300:9300

节点2 docker-compose.yml

version: '2'
services:
elasticsearch:
image: docker.elastic.co/elasticsearch/elasticsearch:5.4.1
container_name: elasticsearch2
environment:
  - cluster.name=MoquiElasticSearch
  - bootstrap.memory_lock=true
  - discovery.zen.minimum_master_nodes=2
  - xpack.security.enabled=false
  - transport.publish_host=192.168.2.101
  - transport.publish_port=9301
  - transport.tcp.port=9301
  - http.publish_host=192.168.2.101
  - http.publish_port=9201
  - http.port=9201
  - discovery.zen.ping.unicast.hosts=192.168.2.101:9300,192.168.2.101:9302
  - "ES_JAVA_OPTS=-Xms512m -Xmx512m"
  - TZ=Asia/Shanghai
ulimits:
  memlock:
    soft: -1
    hard: -1
mem_limit: 1g
ports:
  - 9201:9201
  - 9301:9301

节点3 docker-compose.yml

version: '2'
services:
elasticsearch:
image: docker.elastic.co/elasticsearch/elasticsearch:5.4.1
container_name: elasticsearch3
environment:
  - cluster.name=MoquiElasticSearch
  - bootstrap.memory_lock=true
  - discovery.zen.minimum_master_nodes=2
  - xpack.security.enabled=false
  - transport.publish_host=192.168.2.101
  - transport.publish_port=9302
  - transport.tcp.port=9302
  - http.publish_host=192.168.2.101
  - http.publish_port=9202
  - http.port=9202
  - discovery.zen.ping.unicast.hosts=192.168.2.101:9300,192.168.2.101:9301
  - "ES_JAVA_OPTS=-Xms512m -Xmx512m"
  - TZ=Asia/Shanghai
ulimits:
  memlock:
    soft: -1
    hard: -1
mem_limit: 1g
ports:
  - 9202:9202
  - 9302:9302

Answer 1

这是由于Mac上的docker具有内存限制(以前为2.5G)导致它无法承受3个节点，因此其中之一被迫关闭。

在为docker引擎增加专用内存后，所有3个节点均已启动并正在运行，elasticsearch集群为GREEN