[redis] 幾種redis數據導出導入方式

環境說明：

172.20.0.1 redis源實例
172.20.0.2 redis目標實例
172.20.0.3 任意linux系統

1、redis-dump方式

　　1.安裝redis-dump工具

[root@172.20.0.3 ~]# yum install ruby rubygems ruby-devel -y
# 更改gem源
[root@172.20.0.3 ~]# gem sources -a http://ruby.taobao.org
Error fetching http://ruby.taobao.org:
	bad response Not Found 404 (http://ruby.taobao.org/specs.4.8.gz)

　　訪問http://ruby.taobao.org，公告通知鏡像維護站點已遷往Ruby China鏡像

#gem sources --add https://gems.ruby-china.org/ --remove https://rubygems.org/
[root@172.20.0.3 ~]# gem sources --add http://gems.ruby-china.org/ --remove http://rubygems.org/
http://gems.ruby-china.org/ added to sources
source http://rubygems.org/ not present in cache
[root@172.20.0.3 ~]# gem sources -l
*** CURRENT SOURCES ***

http://gems.ruby-china.org/
[root@172.20.0.3 ~]# gem install redis-dump -V

　　2.redis-dump導出

[root@172.20.0.3 ~]# redis-dump -u :password@172.20.0.1:6379 > 172.20.0.1.json

　　3.redis-load導入

[root@172.20.0.3 ~]# cat 172.20.0.1.json | redis-load -u :password@172.20.0.2:6379

 

2、aof導入方式

　　1.源實例生成aof數據

# 清空上文目標實例所有數據
[root@172.20.0.1 ~]# redis-cli -h 172.20.0.2 -a password flushall
OK
# 源實例開啓aof功能，將在dir目錄下生成appendonly.aof文件
[root@172.20.0.1 ~]# redis-cli -h 172.20.0.1 -a password config set appendonly yes
OK

　　2.目標實例導入aof數據

# 假設appendonly.aof就在當前路徑下
[root@172.20.0.1 ~]# redis-cli -h 172.20.0.2 -a password --pipe < appendonly.aof
All data transferred. Waiting for the last reply...
Last reply received from server.
errors: 0, replies: 5
# 源實例關閉aof功能
[root@172.20.0.1 ~]# redis-cli -h 172.20.0.1 -a password config set appendonly no
OK

 

3、rdb文件遷移方式

暫略

 

4、源實例db0遷移至目標實例db1

[root@172.20.0.1 ~]# cat redis_mv.sh 
#!/bin/bash
redis-cli -h 172.20.0.1 -p 6379 -a password -n 0 keys "*" | while read key
do
    redis-cli -h 172.20.0.1 -p 6379 -a password -n 0 --raw dump $key | perl -pe 'chomp if eof' | redis-cli -h 172.20.0.2 -p 6379 -a password -n 1 -x restore $key 0
    echo "migrate key $key"
done