Linux-Docker-Elasticsearch安装

单机版

下载镜像(服务端)

docker pull elasticsearch:7.12.0
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创建文件和配置文件

mkdir -p  /config/es   /data/es   /plugins/es
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授权

chmod -R 777 /config/es   /data/es /plugins/es
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创建文件

elasticsearch.yml

cluster.name: "my-elasticsearch"
network.host: 0.0.0.0
discovery.zen.minimum_master_nodes: 1
http.cors.enabled: true
http.cors.allow-origin: "*"
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然后将elasticsearch.yml文件放入/config/es下面即可

启动镜像

docker run --name elasticsearch -p 9200:9200  -p 9300:9300 -e "discovery.type=single-node" -e ES_JAVA_OPTS="-Xms256m -Xmx512m" \
-v  /config/es/elasticsearch.yml:/usr/share/elasticsearch/config/elasticsearch.yml \
-v  /data/es:/usr/share/elasticsearch/data \
-v  /plugins/es:/usr/share/elasticsearch/plugins -d elasticsearch:7.12.0
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安装elasticsearch-head(客户端).

docker pull mobz/elasticsearch-head:5
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docker run -d --name es-head -p 9100:9100 docker.io/mobz/elasticsearch-head:5
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然后访问 http://106.12.174.230:9100

安装ik分词器

https://github.com/medcl/elasticsearch-analysis-ik/releases

直接下载当前文章对应的版本: https://github.com/medcl/elasticsearch-analysis-ik/releases/tag/v7.12.0

mkdir -p  /plugins/es/ik

cd  /plugins/es/ik

wget https://github.com/medcl/elasticsearch-analysis-ik/releases/download/v7.12.0/elasticsearch-analysis-ik-7.12.0.zip

unzip   elasticsearch-analysis-ik-7.12.0.zip

rm -rf  elasticsearch-analysis-ik-7.12.0.zip
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重启容器 docker restart elasticsearch ,然后查看日志docker logs -f elasticsearch 只要没报错,那么就可以了,我们测试分词器看看好使不

curl -H "Content-Type: application/json" -X POST -d '{
   "analyzer": "ik_smart"
  ,"text": "我是中国人，我热爱我的祖国"
}' http://127.0.0.1:9200/_analyze
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ES集群(先把单机版玩明白了在说)

停止和删除单机的es容器,docker stop elasticsearch ,docekr rm elasticsearch

node.name: es-node1 集群中保证唯一
discovery.zen.minimum_master_nodes: 1 master节点有1个
network.publish_host 本机ip
不同服务器端口号可以一样,但是我们在同一台服务上部署ES集群那么端口是不能一样的,通过端口号区别不同的ES
http.port: 9200
transport.tcp.port: 9300

创建配置文件和数据文件目录

mkdir -p  /config/es1     /config/es2     /config/es3

mkdir -p  /data/es1     /data/es2     /data/es3  
chmod -R 777 /config/es*   /data/es*     
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节点1的elasticsearch.yml文件

cluster.name: elasticsearch-cluster
node.name: es-node1
network.publish_host: 106.12.174.220
network.bind_host: 0.0.0.0
http.port: 9200
transport.tcp.port: 9300
http.cors.enabled: true
http.cors.allow-origin: "*"
node.master: true
node.data: true
cluster.initial_master_nodes: ["es-node1"]
discovery.zen.ping.unicast.hosts: ["106.12.174.220:9300","106.12.174.220:9301","106.12.174.220:9302"]
discovery.zen.minimum_master_nodes: 2
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然后将文件移动到 /config/es1下之后启动下面命令即可

docker run --name elasticsearch1 -p 9200:9200  -p 9300:9300  -e ES_JAVA_OPTS="-Xms256m -Xmx256m" \
-v  /config/es1/elasticsearch.yml:/usr/share/elasticsearch/config/elasticsearch.yml \
-v  /data/es1:/usr/share/elasticsearch/data \
-v  /plugins/es:/usr/share/elasticsearch/plugins -d elasticsearch:7.12.0
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节点2的elasticsearch.yml文件

cluster.name: elasticsearch-cluster
node.name: es-node2
network.publish_host: 106.12.174.220
network.bind_host: 0.0.0.0
http.port: 9201
transport.tcp.port: 9301
http.cors.enabled: true
http.cors.allow-origin: "*"
node.master: true
node.data: true
cluster.initial_master_nodes: ["es-node1"]
discovery.zen.ping.unicast.hosts: ["106.12.174.220:9300","106.12.174.220:9301","106.12.174.220:9302"]
discovery.zen.minimum_master_nodes: 2


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然后将文件移动到 /config/es2下之后启动下面命令即可

docker run --name elasticsearch2 -p 9201:9201  -p 9301:9301 -e ES_JAVA_OPTS="-Xms256m -Xmx256m" \
-v  /config/es2/elasticsearch.yml:/usr/share/elasticsearch/config/elasticsearch.yml \
-v  /data/es2:/usr/share/elasticsearch/data \
-v  /plugins/es:/usr/share/elasticsearch/plugins -d elasticsearch:7.12.0
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节点3的elasticsearch.yml文件

cluster.name: elasticsearch-cluster
node.name: es-node3
network.publish_host: 106.12.174.220
network.bind_host: 0.0.0.0
http.port: 9202
transport.tcp.port: 9302
http.cors.enabled: true
http.cors.allow-origin: "*"
node.master: true
node.data: true
cluster.initial_master_nodes: ["es-node1"]
discovery.zen.ping.unicast.hosts: ["106.12.174.220:9300","106.12.174.220:9301","106.12.174.220:9302"]
discovery.zen.minimum_master_nodes: 2
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然后将文件移动到 /config/es3下之后启动下面命令即可

docker run --name elasticsearch3 -p 9202:9202  -p 9302:9302  -e ES_JAVA_OPTS="-Xms256m -Xmx256m" \
-v  /config/es3/elasticsearch.yml:/usr/share/elasticsearch/config/elasticsearch.yml \
-v  /data/es3:/usr/share/elasticsearch/data \
-v  /plugins/es:/usr/share/elasticsearch/plugins -d elasticsearch:7.12.0
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最终结果

然后我们查看相关节点的情况

curl http://127.0.0.1:9202/_cat/nodes

问题解决

max virtual memory areas vm.max_map_count [65530] is too low, increase to at least [262144]

# 1.首先切换至root用户
su - root

# 2.编辑sysctl.conf文件
vim /etc/sysctl.conf

# 3.结尾添加配置
vm.max_map_count=262144

# 4.加载配置
sysctl -p

# 5.查看修改结果
sysctl -a|grep vm.max_map_count
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This is forbidden and usually indicates an incorrect discovery or cluster bootstrapping configuration. Note that the cluster UUID persists across restarts and can only be changed by deleting the contents of the node’s data paths [] which will also remove any data held by this node.", 节点数据不一致导致的 ,先停止所有服务然后删除es的数据文件之后在从新启动就行了

rm  -rf  /data/es1/*   /data/es2/*   /data/es3/*
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