一、服務器准備
目前有兩台128G內存服務器，故准備每台啟動兩個es實例，再加一台虛機，共五個節點，保證down一台服務器兩個節點數據不受影響。
二、系統初始化
參見我上一篇kafka系統初始化：https://www.cnblogs.com/mkxfs/p/12030331.html
三、安裝elasticsearch7.5.0
1.因zookeeper和kafka需要java啟動
首先安裝jdk1.8環境
yum install java-1.8.0-openjdk-devel.x86_64 -y
2.官網下載es7.5.0
cd /opt
wget https://artifacts.elastic.co/downloads/elasticsearch/elasticsearch-7.5.0-linux-x86_64.tar.gz
tar -zxf elasticsearch-7.5.0-linux-x86_64.tar.gz
mv elasticsearch-7.5.0 elasticsearch9300
創建es數據目錄
mkdir -p /data/es9300
mkdir -p /data/es9301
3.修改es配置文件
vim /opt/elasticsearch9300/config/elasticsearch.yml
最后添加：
cluster.name: en-es
node.name: node-1
path.data: /data/es9300
path.logs: /opt/elasticsearch9300/logs
bootstrap.memory_lock: true
network.host: 0.0.0.0
http.port: 9200
transport.tcp.port: 9300
cluster.routing.allocation.same_shard.host: true
cluster.initial_master_nodes: ["192.168.0.16:9300", "192.168.0.16:9301","192.168.0.17:9300", "192.168.0.17:9301","192.168.0.18:9300"]
discovery.zen.ping.unicast.hosts: ["192.168.0.16:9300", "192.168.0.16:9301","192.168.0.17:9300", "192.168.0.17:9301", "192.168.0.18:9300"]
discovery.zen.minimum_master_nodes: 3
node.max_local_storage_nodes: 2
http.cors.enabled: true
http.cors.allow-origin: "*"
http.cors.allow-credentials: true
http.cors.allow-headers: Authorization,X-Requested-With,Content-Length,Content-Type
4.修改jvm堆內存大小
vim /opt/elasticsearch9300/config/jvm.options
-Xms25g
-Xmx25g
5.部署本機第二個節點
cp -r /opt/elasticsearch9300 /opt/elasticsearch9301
vim /opt/elasticsearch9301/config/elasticsearch.yml
最后添加：
cluster.name: en-es
node.name: node-2
path.data: /data/es9301
path.logs: /opt/elasticsearch9301/logs
bootstrap.memory_lock: true
network.host: 0.0.0.0
http.port: 9201
transport.tcp.port: 9301
cluster.routing.allocation.same_shard.host: true
cluster.initial_master_nodes: ["192.168.0.16:9300", "192.168.0.16:9301","192.168.0.17:9300", "192.168.0.17:9301", "192.168.0.18:9300"]
discovery.zen.ping.unicast.hosts: ["192.168.0.16:9300", "192.168.0.16:9301","192.168.0.17:9300", "192.168.0.17:9301", "192.168.0.18:9300"]
discovery.zen.minimum_master_nodes: 3
node.max_local_storage_nodes: 2
http.cors.enabled: true
http.cors.allow-origin: "*"
http.cors.allow-credentials: true
http.cors.allow-headers: Authorization,X-Requested-With,Content-Length,Content-Type
6.繼續安裝其他三個節點，注意端口號
7.啟動elasticsearch服務
因為elasticsearch不允許root用戶啟動，故添加es賬號
groupadd es
useradd es -g es
授權es目錄給es用戶
chown -R es:es es9300
chown -R es:es es9301
chown -R es:es /data/es9300
chown -R es:es /data/es9301
啟動es服務
su - es -c "/opt/elasticsearch9300/bin/elasticsearch -d"
su - es -c "/opt/elasticsearch9301/bin/elasticsearch -d"
查看es日志和端口，沒有報錯，啟動成功即可。
四、安裝kibana-7.5.0
1.官網下載kibana-7.5.0
cd /opt
wget https://artifacts.elastic.co/downloads/kibana/kibana-7.5.0-linux-x86_64.tar.gz
tar -zxf kibana-7.5.0-linux-x86_64.tar.gz
2.修改kibana配置文件
vim /opt/kibana-7.5.0-linux-x86_64/config/kibana.yml
server.host: "192.168.0.16"
3.啟動kibana
添加kibana日志目錄
mkdir /opt/kibana-7.5.0-linux-x86_64/logs
kibana也需要es用戶啟動
授權kibana目錄給es
chown -R es:es kibana-7.5.0-linux-x86_64
啟動：
su - es -c "nohup /opt/kibana-7.5.0-linux-x86_64/bin/kibana &>>/opt/kibana-7.5.0-linux-x86_64/logs/kibana.log &"
4.通過瀏覽器訪問kibana
http://192.168.0.16:5601
五、安裝es監控管理工具cerebro-0.8.5
1.下載cerebro-0.8.5release版
cd /opt
wget https://github.com/lmenezes/cerebro/releases/download/v0.8.5/cerebro-0.8.5.tgz
tar -zxf cerebro-0.8.5.tgz
2.修改cerebro配置
vim /opt/cerebro-0.8.5/conf/application.conf
hosts = [
{
host = "http://192.168.0.16:9200"
name = "en-es"
headers-whitelist = [ "x-proxy-user", "x-proxy-roles", "X-Forwarded-For" ]
}
3.啟動cerebro
nohup /opt/cerebro-0.8.5/bin/cerebro -Dhttp.port=9000 -Dhttp.address=192.168.0.16 &>/dev/null &
4.通過瀏覽器訪問
六、通過elasticsearch-migration將老集群數據遷移到新集群上
1.在16上安裝elasticsearch-migration
cd /opt
wget https://github.com/medcl/esm-v1/releases/download/v0.4.3/linux64.tar.gz
tar -zxf linux64.tar.gz
mv linux64 elasticsearch-migration
2.停止老集群所有寫入操作，開始遷移
/opt/elasticsearch-migration/esm -s http://192.168.0.66:9200 -d http://192.168.0.16:9200 -x indexname -w=5 -b=10 -c 10000 >/dev/null
# /opt/esm -s http://10.1.1.13:9200 -d http://10.1.1.68:9200 -m elastic:123456 -w 10 -b 10 -x index_blogger
3.等待遷移完成，一小時大約遷移7000w文檔，40G左右，同時最多建議遷移兩個索引
reindex重建索引
POST _reindex?slices=25&refresh
{
"source": {
"index": "tv",
"size": 5000
},
"dest": {
"index": "tv_v2"
}
}
重建索引別名
POST /_aliases
{
"actions": [
{"add": {
"alias":"tv",
"index":"tv_v2"
}}
]
}
查詢索引別名
GET /tv_v2/_alias/*