071-XtraBackup備份出現"Can't locate Digest/MD5.pm in @INC"

在CentOS 7上安裝了Xtrabackup 2.4.5（innobackupex version 2.4.5 Linux (x86_64) (revision id: e41c0be)），而後作備份時遇到下面錯誤信息「Can't locate Digest/MD5.pm in @INC (@INC contains: /usr/local/lib64/perl5 /usr/local/share/perl5 /usr/lib64/perl5/vendor_perl /usr/share/perl5/vendor_perl /usr/lib64/perl5 /usr/share/perl5 .) at - line 693」。 具體錯誤提示信息以下：

170222 10:57:29 innobackupex: Starting the backup operation





IMPORTANT: Please check that the backup run completes successfully.


           At the end of a successful backup run innobackupex


           prints "completed OK!".





Can't locate Digest/MD5.pm in @INC (@INC contains: /usr/local/lib64/perl5 /usr/local/share/perl5 /usr/lib64/perl5/vendor_perl /usr/share/perl5/vendor_perl /usr/lib64/perl5 /usr/share/perl5 .) at - line 693.


BEGIN failed--compilation aborted at - line 693.


170222 10:57:29 Connecting to MySQL server host: 127.0.0.1, user: root, password: set, port: 3306, socket: (null)


Using server version 5.6.20-enterprise-commercial-advanced-log


/usr/bin/innobackupex version 2.4.5 based on MySQL server 5.7.13 Linux (x86_64) (revision id: e41c0be)


xtrabackup: uses posix_fadvise().


xtrabackup: cd to /var/lib/mysql/


xtrabackup: open files limit requested 0, set to 1024


xtrabackup: using the following InnoDB configuration:


xtrabackup:   innodb_data_home_dir = .


xtrabackup:   innodb_data_file_path = ibdata1:12M:autoextend


xtrabackup:   innodb_log_group_home_dir = ./


xtrabackup:   innodb_log_files_in_group = 2


xtrabackup:   innodb_log_file_size = 50331648

出現這個錯誤是由於安裝Xtrabackup 2.4.5時，沒有安裝 perl-Digest-MD5組件。Percona官方文檔裏面介紹了使用yum、apt等安裝方式，沒有詳細介紹使用rpm安裝方式。這個文檔裏並無要求安裝組件perl-Digest-MD5。而我只安裝了下面一些組件。

[root@DB-Server ~]# yum install cmake gcc gcc-c++ libaio libaio-devel automake autoconf bzr \


                    bison libtool ncurses5-devel





[root@DB-Server ~]# yum -y install perl perl-devel perl-Time-HiRes perl-DBD-MySQL
安裝了perl-Digest-MD5後，問題便可解決。

[root@DB-Server ~]# yum -y install perl-Digest-MD5