Redis——redis使用redis-dump，redis-load导出导入数据——【三】

来源

https://www.cnblogs.com/dadonggg/p/8662455.html

https://blog.csdn.net/chenxinchongcn/article/details/78666374

安装过程

安装ruby

安装redis-dump之前首先需要安装ruby

 $ yum install ruby rubygems ruby-devel -y

报错 

安装完成后,安装redis-dump说ruby版本过低，一查才知道原来Redis需要ruby的版本过低，升级版本

[root@izuf63g0jydq42k49eo7zcz ~]# gem install redis-dump
Fetching: yajl-ruby-1.4.1.gem (100%)
Building native extensions.  This could take a while...
Successfully installed yajl-ruby-1.4.1
Fetching: redis-4.1.0.gem (100%)
ERROR:  Error installing redis-dump:
        redis requires Ruby version >= 2.2.2.

安装rvm

利用curl安装rvm，如果没有curl请使用yum安装

$ yum install curl

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

rvm安装完成后会有两种方式来安装

[root@izuf63g0jydq42k49eo7zcz ~]# curl -L get.rvm.io | bash -s stable
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100   194  100   194    0     0    197      0 --:--:-- --:--:-- --:--:--   197
100 24173  100 24173    0     0   9655      0  0:00:02  0:00:02 --:--:-- 24014
Downloading https://github.com/rvm/rvm/archive/1.29.7.tar.gz
Downloading https://github.com/rvm/rvm/releases/download/1.29.7/1.29.7.tar.gz.asc
gpg: directory `/root/.gnupg' created
gpg: new configuration file `/root/.gnupg/gpg.conf' created
gpg: WARNING: options in `/root/.gnupg/gpg.conf' are not yet active during this run
gpg: keyring `/root/.gnupg/pubring.gpg' created
gpg: Signature made Fri 04 Jan 2019 06:01:48 AM CST using RSA key ID 39499BDB
gpg: Can't check signature: No public key
GPG signature verification failed for '/usr/local/rvm/archives/rvm-1.29.7.tgz' - 'https://github.com/rvm/rvm/releases/download/1.29.7/1.29.7.tar.gz.asc'! Try to install GPG v2 and then fetch the public key:

    gpg2 --keyserver hkp://pool.sks-keyservers.net --recv-keys 409B6B1796C275462A1703113804BB82D39DC0E3 7D2BAF1CF37B13E2069D6956105BD0E739499BDB

or if it fails:

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

In case of further problems with validation please refer to https://rvm.io/rvm/security

我选择第一种,然后接下来进行一系列安装

$ gpg2 --keyserver hkp://pool.sks-keyservers.net --recv-keys 409B6B1796C275462A1703113804BB82D39DC0E3 7D2BAF1CF37B13E2069D6956105BD0E739499BDB

$ curl -sSL https://get.rvm.io | bash -s stable

$ source ~/.bashrc

$ source ~/.bash_profile

$ source /usr/local/rvm/scripts/rvm

$ rvm list known #列出版本

$  rvm install 2.5.3 #选择一个高版本的安装

$ rvm use 2.5.3 #使用安装的版本

$ ruby --version  #不放心,可以查看下版本

安装redis-dump

$ gem install redis-dump

安装完成,查看使用方法

[root@centos_7_6 ~]# redis-dump -h
  Try: /usr/local/rvm/gems/ruby-2.5.3/bin/redis-dump show-commands
Usage: /usr/local/rvm/gems/ruby-2.5.3/bin/redis-dump [global options] COMMAND [command options] 
    -u, --uri=S                      Redis URI (e.g. redis://hostname[:port])
    -d, --database=S                 Redis database (e.g. -d 15)
    -a, --password=S                 Redis password (e.g. -a 'my@pass/word')
    -s, --sleep=S                    Sleep for S seconds after dumping (for debugging)
    -c, --count=S                    Chunk size (default: 10000)
    -f, --filter=S                   Filter selected keys (passed directly to redis' KEYS command)
    -b, --base64                     Encode key values as base64 (useful for binary values)
    -O, --without_optimizations      Disable run time optimizations
    -V, --version                    Display version
    -D, --debug
        --nosafe

[root@centos_7_6 ~]# redis-load
Usage: cat dumpfile_db15.json | redis-load -d 15
[root@centos_7_6 ~]# redis-load -h
Try: /usr/local/rvm/gems/ruby-2.5.3/bin/redis-load show-commands
Usage: /usr/local/rvm/gems/ruby-2.5.3/bin/redis-load [global options] COMMAND [command options] 
-u, --uri=S Redis URI (e.g. redis://hostname[:port])
-d, --database=S Redis database (e.g. -d 15)
-a, --password=S Redis password (e.g. -a 'my@pass/word')
-s, --sleep=S Sleep for S seconds after dumping (for debugging)
-b, --base64 Decode key values from base64 (used with redis-dump -b)
-n, --no_check_utf8
-V, --version Display version
-D, --debug

--nosafe

导出

# redis-dump >> /root/redis.json

//地址密码

# redis-dump -a123456 -u127.0.0.1:6379 /root/redis.json

导入

cat /root/redis.json | redis-load 

//有密码使用-a
cat /root/redis.json | redis-load -adatitest1234