1.安装java
[root@fcentos8 ~]# install java-11-openjdk-devel
2.安装elasticsearch
[root@node1 ~]# rpm --import https://artifacts.elastic.co/GPG-KEY-elasticsearch #导入elasticsearch 密钥 注意：如果导入过程中出现如下错误，检查时间设置，例如时钟源是否同步 curl: (60) SSL certificate problem: certificate is not yet valid More details here: https://curl.haxx.se/docs/sslcerts.html curl failed to verify the legitimacy of the server and therefore could not establish a secure connection to it. To learn more about this situation and how to fix it, please visit the web page mentioned above. error: https://artifacts.elastic.co/GPG-KEY-elasticsearch: import read failed(2). [root@node1 ~]# vim /etc/yum.repos.d/elasticsearch.repo //编写yum文件 [Elasticsearch] name=Elasticsearch baseurl=https://artifacts.elastic.co/packages/7.x/yum gpgcheck=1 gpgkey=https://artifacts.elastic.co/GPG-KEY-elasticsearch enabled=1 autorefresh=1 type=rpm-md [root@node1 ~]# yum makecache #更新仓库源 [root@node1 ~]# yum -y install elasticsearch #安装elasticsearch elasticsearch历史版本下载网址：https://elasticsearch.cn/download/
3. 编写主机host文件
集群中的每台设备都要配置此文件 [root@es1 ~]# vim /etc/hosts #根据实际集群设备地址和主机名修改如下文件 192.168.1.41 es1 192.168.1.42 es2 192.168.1.43 es3 192.168.1.44 es4 192.168.1.45 es5
4. 修改elasticsearch配置文件
所有设备均要修改此文件 注意：elasticsearch文件，其中不同的只有23行有区别，要改成当前主机名 [root@node1 ~]# vim /etc/elasticsearch/elasticsearch.yml #修改配置文件 cluster.name: my-elk #17行--指定自己要设置的集群名字 node.name: node1 #23行--修改指定节点的名称，设置本机的主机名 network.host: 0.0.0.0 #56行--修改elasticsearch监听地址，0.0.0.0代表让所有主机都可访问 discovery.zen.ping.unicast.hosts: ["node1", "node2", "node3"] #此行为新增行---指定集群的成员，不需要配置所有成员，三个成员即可，集群在启动时，其他节点会首先向这三个节点寻求通讯地址，所以，这里三个节点的Elasticsearch服务必须首先启动
5.启动服务
以下几部操作在每个节点都要进行操作
[root@node1 ~]# systemctl enable --now elasticsearch.service #启动服务并设置开机自启
[root@node1 ~]# ss -tunl | grep -E "9200|9300" #查看端口是否启动
tcp LISTEN 0 0 *:9200 *:*
tcp LISTEN 0 0 *:9300 *:*
[root@node1 ~]# curl http://node1:9200 #验证服务状态，如果返回一组 json 数据就是正常的
{
"name" : "node1",
"cluster_name" : "my-elk",
"cluster_uuid" : "lgFLktDOSrqFXsRKlWkbRw",
"version" : {
"number" : "7.16.3",
"build_flavor" : "default",
"build_type" : "rpm",
"build_hash" : "4e6e4eab2297e949ec994e688dad46290d018022",
"build_date" : "2022-01-06T23:43:02.825887787Z",
"build_snapshot" : false,
"lucene_version" : "8.10.1",
"minimum_wire_compatibility_version" : "6.8.0",
"minimum_index_compatibility_version" : "6.0.0-beta1"
},
"tagline" : "You Know, for Search"
}
6. 验证集群
[root@node1 ~]# curl http://node1:9200/_cluster/health?pretty "cluster_name" : "my-elk", "status" : "green", #集群状态绿色为正常 "timed_out" : false, "number_of_nodes" : 5, #集群节点数为5个 "number_of_data_nodes" : 5, #集群的数据节点为5个 "active_primary_shards" : 3, "active_shards" : 6, "relocating_shards" : 0, "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 }
