redis import and export tool-redis-dump, centos7 installation and use

redis import and export tool-redis-dump, centos7 installation and use

Install redis backup tool redi-dump on centos7

Precautions:

Because most of the system's built-in ruby ​​version is 2.0.0 version, but redis-dump needs version 2.2.2 or higher to support. redis-dump is written in ruby ​​language.

If you install it directly, the version will be too low. Requires higher version 2.2.2 or higher support.

The specific commands are as follows:

Install redis-dump

yum install centos-release-scl-rh -y

Configure yum warehouse

yum install rh-ruby23*  -y

Install other tools, you may get an error if you don’t install it

scl  enable  rh-ruby23 bash
ruby -v

View version

gem install redis-dump -V

Note : Because scl enable rh-ruby23 bash is temporarily effective for the first time in the current shell window, you can use ruby ​​-v to view the current version. Ruby is not permanent. If you switch the shell window to use the redis-dump command, it is recommended to execute scl enable rh-ruby23 bash again to make ruby2.3 take effect. Otherwise, there will still be problems;

redis-dump export data

(1) Export command

redis-dump -u  192.168.0.32 > test.json

If you carry the password, please execute the following command

redis-dump -u :[email protected]:16055 -d 0 >tes-fct111.txt

(2) Redis-load import data

< test.json redis-load -u 192.168.0.31
ERROR (Yajl::ParseError): lexical error: invalid bytes in UTF8 string.
          lue":{"maxInactiveInterval":"¬웵0000\u0005sr\u0000\u0011jav
                     (right here) ------^

If an error is reported, the parameter -n can be added, and the utf-8 format will not be checked

< test.json redis-load -n -u 192.168.0.31