文章目錄

• • ElasticSearch 設置備份文件地址
  • 注冊快照存儲庫
  • 查看快照存儲庫保存結果
  • 創建快照
  • • 異步創建
    • 指定索引進行快照
    • 查看全部快照
  • 在服務器查看備份的數據
  • 恢復數據
  • • 本機恢復
    • 其他服務器恢復
  • 常見問題
  • • 報錯 doesn't match any of the locations specified by path.repo because this setting is empty

ElasticSearch 設置備份文件地址

• 在elasticsearch.yml 新增

path.repo: ["/home/es/snapshot"]

注冊快照存儲庫

ecopherebbs是我們定義的快照名，可以自定義

PUT _snapshot/ecopherebbs {"type": "fs","settings": {"location": "/home/es/snapshot"} }

保存成功

查看快照存儲庫保存結果

GET _snapshot

返回結果

{"ecopherebbs" : {"type" : "fs","settings" : {"compress": true,"location" : "/home/es/snapshot"}} }

創建快照

異步創建

• 創建

PUT _snapshot/ecopherebbs/snapshot_20210631 {"ignore_unavailable": true,"include_global_state": true }

• 查看狀態

GET _snapshot/ecopherebbs/snapshot_20210631

處理中

{"snapshots" : [{"snapshot" : "snapshot_20210631","uuid" : "PTBkWV-pQ8CQ7l4RNxISfA","version_id" : 7090399,"version" : "7.9.3","indices" : ["t_e_s_t___2_0_2_1_0_4_2_1_0_9_2_9_index","test0627","test110",".kibana-event-log-7.9.3-000001","fang_fa_index","filebeat-7.9.3-2021.06.29-000001","gateway_requests","my_index","ilm-history-2-000003",".kibana-event-log-7.9.3-000002",".kibana_1"],"data_streams" : [ ],"include_global_state" : true,"state" : "IN_PROGRESS","start_time" : "2021-06-30T05:26:10.530Z","start_time_in_millis" : 1625030770530,"end_time" : "1970-01-01T00:00:00.000Z","end_time_in_millis" : 0,"duration_in_millis" : 0,"failures" : [ ],"shards" : {"total" : 0,"failed" : 0,"successful" : 0}}] }

處理完成

{"snapshots" : [{"snapshot" : "snapshot_20210631","uuid" : "PTBkWV-pQ8CQ7l4RNxISfA","version_id" : 7090399,"version" : "7.9.3","indices" : ["t_e_s_t___2_0_2_1_0_4_2_1_0_9_2_9_index","test0627","test110",".kibana-event-log-7.9.3-000001","fang_fa_index","filebeat-7.9.3-2021.06.29-000001","gateway_requests","my_index","ilm-history-2-000003",".kibana-event-log-7.9.3-000002",".kibana_1"],"data_streams" : [ ],"include_global_state" : true,"state" : "SUCCESS","start_time" : "2021-06-30T05:26:10.530Z","start_time_in_millis" : 1625030770530,"end_time" : "2021-06-30T05:26:16.937Z","end_time_in_millis" : 1625030776937,"duration_in_millis" : 6407,"failures" : [ ],"shards" : {"total" : 200,"failed" : 0,"successful" : 200}}] }

指定索引進行快照

PUT _snapshot/ecopherebbs/snapshot_20210630?wait_for_completion=true {"indices": "index1,index2","ignore_unavailable": true,"include_global_state": true }

wait_for_completion=true時會一直阻塞直到快照完成，kibana執行時超時為30秒，超時后快照依然會在后臺執行

snapshot_20200729 就是指定的備份快照命中

請求體重indices指定需要備份的索引（多個用逗號隔開），也可以不指定，這樣會備份所有的es索引庫數據

查看全部快照

GET _snapshot/ecopherebbs/_all?pretty

在服務器查看備份的數據

每次執行快照都會生成一個 meta和一個snap文件

[es@test12 snapshot]$ ls -lrt 總用量 1404 drwxrwxr-x. 62 es es 4096 6月 30 13:23 indices -rw-rw-r--. 1 es es 460329 6月 30 13:24 meta--WCM58RpQNm5bEywCjO_cg.dat -rw-rw-r--. 1 es es 1596 6月 30 13:24 snap--WCM58RpQNm5bEywCjO_cg.dat -rw-rw-r--. 1 es es 1596 6月 30 13:26 snap-PTBkWV-pQ8CQ7l4RNxISfA.dat -rw-rw-r--. 1 es es 460329 6月 30 13:26 meta-PTBkWV-pQ8CQ7l4RNxISfA.dat -rw-rw-r--. 1 es es 302 6月 30 13:52 snap-N3zRMDnDTEqoiShEwjKosA.dat -rw-rw-r--. 1 es es 460329 6月 30 13:52 meta-N3zRMDnDTEqoiShEwjKosA.dat -rw-rw-r--. 1 es es 24990 6月 30 13:52 index-2 -rw-rw-r--. 1 es es 8 6月 30 13:52 index.latest

恢復數據

本機恢復

POST _snapshot/ecopherebbs/snapshot_20210631_02/_restore

執行恢復要將之前的索引刪除，否則會報錯

• 或者在恢復時執行新索引名稱 官網描述

POST /_snapshot/my_backup/snapshot_1/_restore {"indices": "index_1", "rename_pattern": "index_(.+)", "rename_replacement": "restored_index_$1" }

其他服務器恢復

注意：版本要相同，版本不同很有可能會導致失敗

配置第一步設置的目錄
path.repo: ["/home/es/snapshot"]

創建倉庫

PUT _snapshot/ecopherebbs {"type": "fs","settings": {"location": "/home/es/snapshot-test"} }

執行恢復索引

POST _snapshot/ecopherebbs/snapshot_20210631_02/_restore

常見問題

報錯 doesn’t match any of the locations specified by path.repo because this setting is empty

{"error" : {"root_cause" : [{"type" : "repository_exception","reason" : "[ecopherebbs] location [/home/es/snapshot] doesn't match any of the locations specified by path.repo because this setting is empty"}],"type" : "repository_exception","reason" : "[ecopherebbs] failed to create repository","caused_by" : {"type" : "repository_exception","reason" : "[ecopherebbs] location [/home/es/snapshot] doesn't match any of the locations specified by path.repo because this setting is empty"}},"status" : 500 }

• 解決方法：

在為es集群環境做災備和恢復時候，首先需要創建創建一個倉庫，并往倉庫中存放快照（每個快照中會區分不同的索引）。但是在創建倉庫的時候，要求倉庫的地址必須在每個集群環境中的elasticsearch.yml中進行配置

個人公眾號(大數據學習交流): hadoopwiki

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