今天在CentOS 7上安装MySQL时，遇到如下错误：
[mysql@mysql01 mysqlc]$ scripts/mysql_install_db --no-defaults --datadir=/mysql/my_cluster/mysqld_data/
FATAL ERROR: please install the following Perl modules before executing scripts/mysql_install_db:
Data::Dumper
要想解决此错误，需要用以下命令安装Perl模块：
[root@mysql01 ~]# yum install perl-Data-Dumper.x86_64
Resolving Dependencies
--> Running transaction check
---> Package perl-Data-Dumper.x86_64 0:2.145-3.el7 will be installed
--> Finished Dependency Resolution
Dependencies Resolved
=======================================================================================================================================================
Package Arch Version Repository Size
=======================================================================================================================================================
Installing:
perl-Data-Dumper x86_64 2.145-3.el7 ol7_latest 47 k
Transaction Summary
=======================================================================================================================================================
Install 1 Package
Total download size: 47 k
Installed size: 97 k
Is this ok [y/d/N]: y
Downloading packages:
perl-Data-Dumper-2.145-3.el7.x86_64.rpm | 47 kB 00:00:01
Running transaction check
Running transaction test
Transaction test succeeded
Running transaction
Installing : perl-Data-Dumper-2.145-3.el7.x86_64 1/1
Verifying : perl-Data-Dumper-2.145-3.el7.x86_64 1/1
Installed:
perl-Data-Dumper.x86_64 0:2.145-3.el7
Complete!
安装完成后，重新运行”mysql_install_db“即可。
