CentOS7下使用docker安装ElasticSearch

使用docker-compose安装ES及其图形化界面kibana。

docker-compose文件

version: "3"
services:
  elasticsearch6.8.11:
    image: daocloud.io/library/elasticsearch:6.8.11
    restart: always
    container_name: es6.8.11
    ports:
      - 9200:9200
  
  kibana:
    # 版本号与ES要一致
    image: daocloud.io/library/kibana:6.8.11
    restart: always
    container_name: kibana6.8.11
    volumes:
      - ./kibna/config:/usr/share/kibana/config
    ports:
      - 5601:5601
    environment:
      - elasticsearch_url=http://192.168.1.4:9200
    depends_on:
      - elasticsearch6.8.11

kibana配置文件

在配置kibana的数据卷下新建文件kibana.yml，添加如下内容：

#
# ** THIS IS AN AUTO-GENERATED FILE **
#

# Default Kibana configuration for docker target
server.name: kibana
server.host: "0"
# 指定ES的地址
elasticsearch.hosts: [ "http://192.168.1.4:9200" ]
xpack.monitoring.ui.container.elasticsearch.enabled: true

下载安装

将文件置于/opt/docker/es下，执行如下安装命令

docker-compose up -d

错误解决

ES启动失败

报错信息

若使用docker-compose logs -f监测到如下日志，表示ES启动失败。

es6.8.11               | [2021-07-17T18:57:38,590][INFO ][o.e.b.BootstrapChecks    ] [EfARraA] bound or publishing to a non-loopback address, enforcing bootstrap checks
es6.8.11               | ERROR: [1] bootstrap checks failed
es6.8.11               | [1]: max virtual memory areas vm.max_map_count [65530] is too low, increase to at least [262144]
es6.8.11               | [2021-07-17T18:57:38,598][INFO ][o.e.n.Node               ] [EfARraA] stopping ...
es6.8.11               | [2021-07-17T18:57:38,631][INFO ][o.e.n.Node               ] [EfARraA] stopped
es6.8.11               | [2021-07-17T18:57:38,631][INFO ][o.e.n.Node               ] [EfARraA] closing ...
es6.8.11               | [2021-07-17T18:57:38,642][INFO ][o.e.n.Node               ] [EfARraA] closed

错误原因

系统分配的虚拟内存太小

解决方式

编辑 /etc/sysctl.conf，追加以下内容：
vm.max_map_count=262144
保存后，执行：
sysctl -p

kibana启动失败（未配置数据卷时可能出现）

报错信息

使用docker-compose查看日志，发现kibana报错如下：

kibana6.8.11           | {"type":"log","@timestamp":"2021-07-17T19:26:46Z","tags":["license","warning","xpack"],"pid":1,"message":"License information from the X-Pack plugin could not be obtained from Elasticsearch for the [data] cluster. Error: No Living connections"}
kibana6.8.11           | {"type":"log","@timestamp":"2021-07-17T19:26:47Z","tags":["warning","elasticsearch","admin"],"pid":1,"message":"Unable to revive connection: http://elasticsearch:9200/"}
kibana6.8.11           | {"type":"log","@timestamp":"2021-07-17T19:26:47Z","tags":["warning","elasticsearch","admin"],"pid":1,"message":"No living connections"}
kibana6.8.11           | {"type":"log","@timestamp":"2021-07-17T19:26:47Z","tags":["warning","task_manager"],"pid":1,"message":"PollError No Living connections"}
kibana6.8.11           | {"type":"log","@timestamp":"2021-07-17T19:26:48Z","tags":["warning","elasticsearch","admin"],"pid":1,"message":"Unable to revive connection: http://elasticsearch:9200/"}
kibana6.8.11           | {"type":"log","@timestamp":"2021-07-17T19:26:48Z","tags":["warning","elasticsearch","admin"],"pid":1,"message":"No living connections"}

错误原因

kibana监听的地址不对

解决方式

修改kibana监听地址

使用命令docker exec -it 容器id bash进入kibana容器内部

修改config/kibana.yml中elasticsearch.host的值为ES的IP地址：
#
# ** THIS IS AN AUTO-GENERATED FILE **
#

# Default Kibana configuration for docker target
server.name: kibana
server.host: "0"
# 看到此处监听的地址是http://elasticsearch:9200，修改为ES的地址即可
elasticsearch.hosts: [ "http://elasticsearch:9200" ]
xpack.monitoring.ui.container.elasticsearch.enabled: true
重启容器。