ElasticSearch备份与还原

Oct 31, 2016

ElasticSearch备份与还原

1.elasticsearch.yml添加path.repo路径配置：

path.repo: ["/opt/index_data_backup"]

2.重启es，若存在就不用重启了

3.修改备份文件的属性

mkdir -p /opt/index_data_backup/my_backup
chmod 777 /opt/index_data_backup/my_backup
chown -R es:es /opt/index_data_backup/my_backup

环境共享 安装 sshfs 使用yum去安装

下面这两个命令是如果共享目录错了解除共享的 fusermount -u YOUR_MNT_DIR sudo umount -l YOUR_MNT_DIR

暴力一些，在其中一台机器上面设置一下共享目录，比如我选中了10.200.2.95这台机器。

sudo mkdir -p /opt/my_data_backup/es_backup
chmod 777 /opt/my_data_backup/es_backup

建立共享，在每个节点上面都使用这个命令

sudo sshfs lvmama_admin@10.200.2.95:/opt/my_data_backup/es_backup/ /opt/index_data_backup/my_backup -o allow_other

4.创建repository

PUT _snapshot/my_backup 
{
    "type": "fs", 
    "settings": {
        "location": "/opt/index_data_backup/my_backup" 
    }
}

maxsnapshotbytespersec:默认20M每秒的速度，可修改 maxrestorebytespersec：默认20M每秒的速度，可修改 POST _snapshot/my_backup/ { "type": "fs", "settings": { "location": "/mount/backups/my_backup", "max_snapshot_bytes_per_sec" : "50mb", "max_restore_bytes_per_sec" : "50mb" } }

查看repository信息

GET _snapshot/my_backup/

5.创建快照

PUT _snapshot/my_backup/snapshot_1

同步执行的话，索引很大会比较慢：

PUT _snapshot/my_backup/snapshot_1?wait_for_completion=true

只备份部分索引，我们就使用这个：

PUT _snapshot/my_backup/snapshot_2
{
    "indices": "index_1,index_2"
}

查看备份情况

GET _snapshot/my_backup/snapshot_2

删除镜像，备份

DELETE _snapshot/my_backup/snapshot_2
DELETE _snapshot/my_backup

观察备份进程

GET _snapshot/my_backup/snapshot_3
GET _snapshot/my_backup/snapshot_3/_status

镜像恢复

POST _snapshot/my_backup/snapshot_1/_restore

指定索引恢复

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

renamepattern 和 renamereplacement 是利用正则来重命名索引