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                合規國際互聯網加速 OSASE為企業客戶提供高速穩定SD-WAN國際加速解決方案。 廣告
                ## elastic search集群故障切換測試 ### 測試環境說明 - windows server2016 64位 - java version 1.8 - elasticserach 版本:6.6.2 (添加中文分詞插件ik) ### 測試方法說明 - 安裝es,解壓后運行bin目錄中的腳本直接啟動。 - 安裝head插件連接es節點,監控集群狀態和添加以及查詢數據。 - 同時啟動三個es節點,設置不同的端口區分。啟用集群,不做特殊的主從節點區分,使三個節點同時具有主節點、從節點、協調節點的功能。 - 在集群中任意連接一個節點,建立索引,新建數據。 - 依次停止節點1,節點2,接著在剩余的節點中查詢數據,根據是否返回所有的數據來判斷數據是否正常的轉移到了從節點。 - 從head工具上檢查主節點是否進行了重新選舉。 #### 節點狀態意義說明 狀態 | 意義 ---|--- green| 所有主分片和從分片都可用 yellow| 所有主分片可用,但存在不可用的從分片 red| 存在不可用的主要分片 #### 測試過程和結果 1. 初始查詢集群健康狀態為green,節點為3個,分別連接3個節點,分別寫入數據。 2. 關閉節點1,從head上看到節點2被選為主節點master,連接到節點2和節點3,查詢數據正常,返回了所有數據。 3. 再次關閉節點2,節點3被選為master,查詢數據正常。 4. 同時集群健康狀態為yellow。 5. 然后單獨在節點3中加入數據,再分別啟動節點1,節點2,集群健康狀態恢復為green,節點1和節點2變成了從節點。 6. 接著分別在節點1和2中查詢節點3中增加的數據,數據正常返回。查詢所有的數據也正常的返回了。 7. 說明數據轉移正常,故障轉移能力正常。 #### 使用的操作 查看集群健康狀況: ``` GET /_cluster/health { "cluster_name": "my-test", "status": "green", "timed_out": false, "number_of_nodes": 3, "number_of_data_nodes": 3, "active_primary_shards": 5, "active_shards": 10, "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 } ``` 添加數據: ``` PUT /megacorp/employee/1 { "first_name" : "John", "last_name" : "Smith", "age" : 25, "about" : "I love to go rock climbing", "interests": [ "sports", "music" ] } PUT /megacorp/employee/2 { "first_name" : "Jane", "last_name" : "Smith", "age" : 32, "about" : "I like to collect rock albums", "interests": [ "music" ] } PUT /megacorp/employee/3 { "first_name" : "Douglas", "last_name" : "Fir", "age" : 35, "about": "I like to build cabinets", "interests": [ "forestry" ] } ``` 查詢數據: ``` 查詢單個 GET /megacorp/employee/1 查詢全部 GET /megacorp/employee/_search ``` #### 配置 節點1: ``` cluster.name: my-test node.name: node-1 network.host: 0.0.0.0 http.port: 9200 http.cors.enabled: true http.cors.allow-origin: "*" transport.tcp.port: 9400 discovery.zen.ping.unicast.hosts: ["127.0.0.1:9400", "127.0.0.1:9401", "127.0.0.1:9402"] ``` 節點2: ``` cluster.name: my-test node.name: node-2 network.host: 0.0.0.0 http.port: 9201 http.cors.enabled: true http.cors.allow-origin: "*" transport.tcp.port: 9401 discovery.zen.ping.unicast.hosts: ["127.0.0.1:9400", "127.0.0.1:9401", "127.0.0.1:9402"] ``` 節點3: ``` cluster.name: my-test node.name: node-3 network.host: 0.0.0.0 http.port: 9202 http.cors.enabled: true http.cors.allow-origin: "*" transport.tcp.port: 9402 discovery.zen.ping.unicast.hosts: ["127.0.0.1:9400", "127.0.0.1:9401", "127.0.0.1:9402"] ```
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