Redis备份工具Redis-dump

Posted 2021-09-20 青衫解衣

Redis-dump 文档和地址:

​​https://github.com/delano/redis-dump/​​

​​https://rubygems.org/gems/redis-dump​​

安装ruby依赖:

yum install -y gcc-c++ patch readline readline-devel zlib zlib-devel \\
 libyaml-devel libffi-devel openssl-devel make \\
 bzip2 autoconf automake libtool bison iconv-devel sqlite-devel

安装系统ruby:

yum install ruby -y

替换ruby源:

gem sources --remove https://rubygems.org/
gem sources -a https://mirrors.aliyun.com/rubygems/
gem source -l

安装rvm：

yum install  curl -y
curl -L  get.rvm.io | bash -s stable

报错:

[root@harbor ~]# curl -sSL https://get.rvm.io | bash -s stable

curl: (7) Failed connect to raw.githubusercontent.com:443; Connection refused

解决办法:

打开网站​​https://www.ipaddress.com/​​,查询一下raw.githubusercontent.com对应的IP 地址。

​

/etc/hosts文件新增:​

185.199.108.133 raw.githubusercontent.com

/etc/resolv.conf文件新增:

nameserver 8.8.8.8

 

输出内容复制下面内容运行:

command curl -sSL https://rvm.io/mpapis.asc | gpg2 --import -
command curl -sSL https://rvm.io/pkuczynski.asc | gpg2 --import -

再次运行:

curl -L  get.rvm.io | bash -s stable

更新配置文件:

source /etc/profile.d/rvm.sh

安装ruby2.3.3版本:

安装中替换老的ruby.

rvm install 2.3.3 (2.3.3以上版本都可以)

查看可以安装的Ruby版本:

rvm list known

安装备份工具redis-dump:

gem install redis-dump -V

 

测试redis-dump备份:

第一种写法:

[root@harbor ~]# redis-dump -u:redhat@127.0.0.1:6379 > /backup/db_full.json   
[root@harbor ~]# cat /backup/db_full.json 
{"db":0,"key":"name","ttl":-1,"type":"string","value":"mew","size":3}

 

第二种写法:

[root@harbor ~]# redis-dump -p 6379 -a redhat > /backup/db2.json
[root@harbor ~]# cat /backup/db2.json 
{"db":0,"key":"name","ttl":-1,"type":"string","value":"mew","size":3}

 

测试name值改为meng，再新建一个值，恢复看是否会覆盖或者影响其他值：

新建的2个key:

恢复备份:

# cat /backup/db_full.json | redis-load -u:redhat@127.0.0.1:6379

​