elasticsearch数据备份还原[未测试]

1.在浏览器中运行http://XXX.XXX.XXX.XXX:9200/_flush，确保索引数据能保存到硬盘中。 2.原数据的备份。主要是elasticsearch数据目录下的nodes目录的备份。nodes目录为索引数据目录。 3.将原集群中的每个elasticsearch节点下的data目录拷贝至新的elasticsearch数据目录下。

4 利用快照来备份还原。

下面是备份及还原的脚本，分别存成 esback.sh,esrestore.sh,并 chmod 777 esback.sh.给予执行权限

脚本如下：

-----自动备份elasticsearch数据并压缩--- #!/bin/bash filename=`date +%Y%m%d%H` backesFile=es$filename.tar.gz cd /home/elasticsearch/back mkdir es_dump cd es_dump curl -XDELETE 192.168.1.7:9200/_snapshot/backup/$filename?pretty echo 'sleep 30' sleep 30 curl -XPUT 192.168.1.7:9200/_snapshot/backup/$filename?wait_for_completion=true&pretty echo 'sleep 30' sleep 30 cp /home/elasticsearch/snapshot/* /home/elasticsearch/back/es_dump -rf cd .. tar czf $backesFile  es_dump/ rm es_dump -rf  -----自动解压并还原elasticsearch数据--- #!/bin/bash filename='XXXXXXX' backesFile=es$filename.tar.gz cd /home/elasticsearch/back tar zxvf $backesFile rm /home/elasticsearch/snapshot/* -rf cp /home/elasticsearch/back/es_dump/* /home/elasticsearch/snapshot -rf curl -XPOST 192.168.1.7:9200/users/_close curl -XPOST 192.168.1.7:9200/products/_close echo 'sleep 5' sleep 5 curl -XPOST 192.168.1.7:9200/_snapshot/backup/$filename/_restore?pretty -d '{ "indices":"users" }'  echo 'sleep 5' sleep 5 curl -XPOST 192.168.1.7:9200/_snapshot/backup/$filename/_restore?pretty -d '{ "indices":"products" }' echo 'sleep 5' sleep 5 curl -XPOST 192.168.1.7:9200/users/_open curl -XPOST 192.168.1.7:9200/products/_open  rm es_dump -rf 

---end----

备份的脚本有几个前提条件

1 先创建快照存储库

--创建快照存储库 backup-- curl -XPUT 192.168.1.7:9200/_snapshot/backup -d ' { "type":"fs", "settings":{"location":"/home/elasticsearch/snapshot"} }'

且/home/elasticsearch/snapshot 该目录要有权限

备份目录  /home/elasticsearch/back要先建好

还原的时候是按索引来分别还原的，可改成需要的方式

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