ES升级--05--快照生成 和备份

提示：文章写完后，目录可以自动生成，如何生成可参考右边的帮助文档

备份ES数据

1.关闭集群自动均衡

有密码加上 -u ‘elastic:escdms’

curl -XPUT "http://192.168.2.89:9200/_cluster/settings?pretty" -H 'Content-Type:application/json' -d '{
  "persistent": {
    "cluster.blocks.read_only": true,
    "cluster.routing.rebalance.enable": "none"
  },
  "transient": {
    "cluster.blocks.read_only": true,
    "cluster.routing.rebalance.enable": "none"
  }
}'

curl命令可以在kibana平台替换为如下命令：

PUT /_cluster/settings
{
  "persistent": {
    "cluster.blocks.read_only": true,
    "cluster.routing.rebalance.enable": "none"
  },
  "transient": {
    "cluster.blocks.read_only": true,
    "cluster.routing.rebalance.enable": "none"
  }
}

2.执行同步刷新

curl -X POST "http://192.168.2.89:9200/_flush/synced"

POST /_flush/synced

3.停止集群节点的Elasticsearch服务

ps aux | grep elasticsearch
kill -9  xxxxxx
pkill -f elasticsearch 

4.修改Elasticsearch配置文件，开启快照功能，配置仓库目录为共享存储

如果没有这个

# 设置备份路径
path.repo: ["/home/data/elastic-6.3.2/mybackup"]

5.重启集群节点的Elasticsearch服务

bin/elasticsearch -d

6.通开启集群分片重建、恢复集群写入配置

先执行

curl -XPUT -H "Content-Type: application/json" http://localhost:9200/_cluster/settings -d '{
  "persistent": {
    "cluster.blocks.read_only": false
  }
}'

后执行

curl -XPUT "http://192.168.2.89:9200/_cluster/settings?pretty" -H 'Content-Type: application/json' -d '{
  "persistent": {
    "cluster.blocks.read_only": false,
    "cluster.routing.rebalance.enable": "ALL"
  },
  "transient": {
     "cluster.blocks.read_only": false,
    "cluster.routing.rebalance.enable": "ALL"
  }
}'

PUT /_cluster/settings
{
  "persistent": {
    "cluster.blocks.read_only": false,
    "cluster.routing.rebalance.enable": "ALL"
  },
  "transient": {
     "cluster.blocks.read_only": false,
    "cluster.routing.rebalance.enable": "ALL"
  }
}

7.注册快照存储

• 通过http提交注册快照存储，需指定到快照仓库目录下

curl -X PUT "http://192.168.2.89:9200/_snapshot/mybackup" -H 'Content-Type: application/json'  -d'
{
  "type": "fs",
  "settings": {
    "location": "/home/data/elastic-6.3.2/mybackup"
  }
}'

8.执行快照

• IaaS环境执行生成快照，通过http提交，第一次为全量，后面再执行则为增量

curl -XPUT "http://192.168.2.89:9200/_snapshot/mybackup/snapshot_20240606?wait_for_completion=true"  -H 'Content-Type: application/json' -d '{
  "ignore_unavailable": true,
  "include_global_state": true
}'

也可以选定某个索引

curl -XPUT "http://192.168.2.54:9200/_snapshot/my_backup/snapshot_20240607?wait_for_completion=true"  -H 'Content-Type: application/json' -d '{
  "indices": "cbsp_appform_index",
  "ignore_unavailable": true,
  "include_global_state": true
}'

9.查看快照执行情况

有密码加上 -u ‘elastic:escdms’

curl -X GET "http://192.168.2.89:9200/_snapshot/mybackup/_all" 

GET _snapshot/mybackup/_all

10 删除多余快照

• 查看所有快照仓库

GET _snapshot/_all

• 查看此仓库的快照情况

GET _snapshot/my_backup/_all

• 删除之前的有的快照

curl -X DELETE "localhost:9200/_snapshot/<repository_name>/*"

DELETE /_snapshot/<repository_name>/*

恢复数据 ----环境es7.9

1.将备份数据复制到新版es目录

• app账号登录新环境，将备份数据复制到新版es目录

传输用rsync

安装命令

sudo yum install rsync

传输命令 ：账号 root ，会弹窗口要求输入密码

rsync -avz /home/data/elastic-6.3.2/es_bak  root@192.168.2.79:/home/es/

检查文件夹和权限

等待传输完成 查看文件夹

/data/es/mybackup

• 注意文件夹和权限问题

• 注意权限

chown -R es:es  /data/es    

2.elasticsearch.yml 配置

path.repo: ["/data/es/mybackup"]

3.重新启动es服务

 bin/elasticsearch -d

4.注册备份仓库

curl -XPUT "http://192.168.2.79:9200/_snapshot/mybackup" -H 'Content-Type: application/json' -d '{
  "type": "fs",
  "settings": {
    "location": "/data/es/mybackup"
  }
}'

5.恢复数据

• mybackup ：备份仓库
• snapshot_20240607：快照版本

curl -XPOST "http://192.168.2.79:9200/_snapshot/mybackup/snapshot_20240607/_restore" -H 'Content-Type: application/json' -d '{
  "ignore_unavailable": true,
  "include_global_state": true
}'

可以制定恢复索引

curl -XPOST "http://192.168.2.89:9200/_snapshot/mybackup/snapshot_20240606/_restore" -H 'Content-Type: application/json' -d '{
  "indices": "laas_*",
  "ignore_unavailable": true,
  "include_global_state": true
}'

如果出现索引重复 导致报错

curl -XPOST "http://192.168.2.89:9200/_snapshot/mybackup/snapshot_20240606/_restore" -H 'Content-Type: application/json' -d '{
  "ignore_unavailable": true,
  "include_global_state": true,
  "rename_pattern": ".monitoring-es-6-2024.06.06",
  "rename_replacement": "restored_monitoring_es"
}'

4. 验证

http://192.168.2.79:9200/_cat/indices?v
http://192.168.2.79:9200/cbsp_appform_index/_count
http://192.168.2.79:9200/cbsp_appform_index/_search?q=:&pretty