以下为es7.2.0版本
原集群：（现增加两个节点node_76和node_211）
1、老节点: 下载配置文件elasticsearch.ym、下载秘钥文件elastic-certificates.p12(无密码可以不用)、查看对应版本、查看node节点和集群状态
[root@elastic20 config]# curl -u elastic:test_elastic 16.168.139.20:9200/_cat/nodes
16.168.139.116 73 99 1 0.09 0.17 0.16 mdi * node_116
16.168.139.20 33 99 0 0.16 0.07 0.06 mdi - node_20
16.168.139.45 46 99 1 0.26 0.16 0.09 mdi - node_45
2、----安装同版本es----
新节点：
优化文件描述符、安装jdk、安装同版本es、创建es账号、上传配置文件、秘钥文件，
修改配置文件中（node名、本机ip、发现ip、可成为主节点ip）启动服务、加入开机启动
安装具体参考：https://www.jianshu.com/p/d584579df340
配置文件elasticsearch.yml：(我的文件是复制老节点来的，只修改node.name、network.host、cluster.initial_master_nodes、 discovery.seed_hosts)
带认证的需要拷贝：elastic-certificates.p12这个文件到新节点（和老节点位置一样就行）
# ======================== Elasticsearch Configuration =========================
cluster.name: cluster-Es
node.name: node_76
network.host: 16.168.139.76
node.master: true
node.data: true
# head 插件需要这打开这两个配置
http.cors.allow-origin: "*"
http.cors.enabled: true
http.max_content_length: 200mb
# 可以选举的主节点
cluster.initial_master_nodes: ["16.168.139.20:9300","16.168.139.45:9300","16.168.139.116:9300","16.168.139.211:9300","16.168.139.76:9300"]
discovery.seed_hosts: ["16.168.139.20:9300","16.168.139.45:9300","16.168.139.116:9300","16.168.139.211:9300","16.168.139.76:9300"]
gateway.recover_after_nodes: 2
network.tcp.keep_alive: true
network.tcp.no_delay: true
transport.tcp.compress: true
#集群内同时启动的数据任务个数，默认是2个
cluster.routing.allocation.cluster_concurrent_rebalance: 16
#添加或删除节点及负载均衡时并发恢复的线程个数，默认4个
cluster.routing.allocation.node_concurrent_recoveries: 16
#初始化数据恢复时，并发恢复线程的个数，默认4个
cluster.routing.allocation.node_initial_primaries_recoveries: 16
#开启 xpack 功能，如果要禁止使用密码，请将以下内容注释，直接启动不需要设置密码
xpack.security.enabled: true
xpack.security.transport.ssl.enabled: true
xpack.security.transport.ssl.verification_mode: certificate
xpack.security.transport.ssl.keystore.path: elastic-certificates.p12
xpack.security.transport.ssl.truststore.path: elastic-certificates.p12
完成以上步骤后可以查看下nodes和集群状态；
[root@sxsyjj-ymzs-db-07 data]# curl -u elastic:test_elastic 16.168.139.76:9200/_cat/nodes
16.168.139.76 8 99 10 0.80 0.77 0.40 mdi - node_76
16.168.139.45 54 99 9 0.63 0.44 0.31 mdi - node_45
16.168.139.20 37 93 2 0.66 0.28 0.14 mdi - node_20
16.168.139.211 54 99 7 0.16 0.14 0.09 mdi - node_211
16.168.139.116 37 99 5 0.15 0.22 0.17 mdi * node_116
[root@sxsyjj-ymzs-db-07 ~]# curl -u elastic:test_elastic 16.168.139.76:9200/_cluster/health?pretty
{
"cluster_name" : "cluster-Es",
"status" : "green",
"timed_out" : false,
"number_of_nodes" : 5,
"number_of_data_nodes" : 5,
"active_primary_shards" : 581,
"active_shards" : 640,
"relocating_shards" : 7,
"initializing_shards" : 0,
"unassigned_shards" : 0,
"delayed_unassigned_shards" : 0,
"number_of_pending_tasks" : 0,
"number_of_in_flight_fetch" : 0,
"task_max_waiting_in_queue_millis" : 0,
"active_shards_percent_as_number" : 100.0
}
[root@sxsyjj-ymzs-db-07 ~]#
3、老节点--配置文件中以下两项修改为和新节点一样，不用重启（防止下次重启时报警或故障）
cluster.initial_master_nodes: ["16.168.139.20:9300","16.168.139.45:9300","16.168.139.116:9300","16.168.139.211:9300","16.168.139.76:9300"]
discovery.seed_hosts: ["16.168.139.20:9300","16.168.139.45:9300","16.168.139.116:9300","16.168.139.211:9300","16.168.139.76:9300"]
参考：
https://blog.csdn.net/yabingshi_tech/article/details/120909507
网友评论