ES环境安装

Elasticsearch-Head插件

配置git

# 解决fatal: unable to connect to github.com
$ git config --global url."https://github.com".insteadOf git://github.com

# git使用代理
$ vim ~/.ssh/config
Host github.com
    User git
    ProxyCommand nc -X connect -x 192.168.17.2:7897 %h %p

下载elasticsearch-head

$ git clone git://github.com/mobz/elasticsearch-head.git

# 修改Gruntfile.js
$ vim Gruntfile.js
...
connect: {
    server: {
        options: {
            hostname: '*',  # 增加这一行
            port: 9100,
            base: '.',
            keepalive: true
        }
    }
}
...

# npm换源
$ npm config set registry https://registry.npmmirror.com
# 安装依赖
$ npm install

配置跨域

$ sudo vim /etc/elasticsearch/elasticsearch.yml
# 增加下面两行
http.cors.enabled: true
http.cors.allow-origin: "*"

# 重启ES
$ sudo systemctl restart elasticsearch.service

启动elasticsearch-head服务

# 在elasticsearch-head目录下执行
$ npm run start

效果如下

集群的健康检查

健康值状态

• Green：所有Primary和Replica均为active，集群健康
• Yellow：至少一个Replica不可用，但是所有Primary均为active，数据仍然是可以保证完整性的
• Red：至少有一个Primary为不可用状态，数据不完整，集群不可用

检查集群健康状态

Kibana中执行

GET _cat/health?v

# 返回示例
epoch      timestamp cluster       status node.total node.data shards pri relo init unassign pending_tasks max_task_wait_time active_shards_percent
1733763626 17:00:26  elasticsearch green           1         1     33  33    0    0        0             0                  -                100.0%

# ------------------------------------------------------------------
GET _cluster/health

# 返回示例
{
  "cluster_name": "elasticsearch",
  "status": "green",
  "timed_out": false,
  "number_of_nodes": 1,
  "number_of_data_nodes": 1,
  "active_primary_shards": 33,
  "active_shards": 33,
  "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
}