docker搭建es集群基础配置

现有环境: 采用VM虚拟机模拟不同服务器

两台centos,   一台ubuntu  

docker 的es镜像  

elasticsearch:6.5.3

 运行的镜像参数

docker run -d --restart=always --name es -p 9200:9200 -p 9300:9300 -v /home/chentong/es/elasticsearch.yml:/usr/share/elasticsearch/config/elasticsearch.yml   elasticsearch:6.5.3

-p 端口映射

-v 主要是修改es容器配置文件映射宿主机 

主节点配置

cluster.name: test_cluster

node.name: master
node.master: true
node.data: true

network.host: 0.0.0.0
network.publish_host: 192.168.0.214

http.host: 0.0.0.0


http.cors.enabled: true
http.cors.allow-origin: "*"

http.port: 9200
transport.tcp.port: 9300

discovery.zen.ping.unicast.hosts: ["192.168.0.214","192.168.0.92", "192.168.0.137"]

discovery.zen.minimum_master_nodes: 1

从节点1配置 

cluster.name: test_cluster 

node.name: slave1
node.master: false
node.data: true

network.host: 0.0.0.0
network.publish_host: 192.168.0.92

http.host: 0.0.0.0


http.cors.enabled: true
http.cors.allow-origin: "*"

http.port: 9200
transport.tcp.port: 9300

discovery.zen.ping.unicast.hosts: ["192.168.0.214","192.168.0.92", "192.168.0.137"]

discovery.zen.minimum_master_nodes: 1

从节点2配置 

cluster.name: test_cluster

node.name: slave2
node.master: false
node.data: true

network.host: 0.0.0.0
network.publish_host: 192.168.0.137

http.host: 0.0.0.0


http.cors.enabled: true
http.cors.allow-origin: "*"

http.port: 9200
transport.tcp.port: 9300

discovery.zen.ping.unicast.hosts: ["192.168.0.214","192.168.0.92", "192.168.0.137"]

discovery.zen.minimum_master_nodes: 1

踩坑1

ERROR: bootstrap checks failed max virtual memory areas vm.max_map_count [65530] is too low, increase to at least [262144]

解决办法：
   切换到root用户修改配置sysctl.conf

vi /etc/sysctl.conf 

• 添加下面配置：

vm.max_map_count=655360

• 并执行命令：

sysctl -p

然后，重新启动elasticsearch，即可启动成功。

踩坑2

docker elasticsearch挂载宿主机报 java.nio.file.AccessDeniedException:/usr/share/elasticsearch/data/nodes

解决方式:

原因:宿主机映射的/database/elasticsearch/cluster/data目录权限不足导致的

    解决方案: chmod 776 data 加上权限