mysql执行执行pt-query-digest报错的原因

这篇文章主要介绍"mysql执行执行pt-query-digest报错的原因"，在日常操作中，相信很多人在mysql执行执行pt-query-digest报错的原因问题上存在疑惑，小编查阅了各式资料，整理出简单好用的操作方法，希望对大家解答"mysql执行执行pt-query-digest报错的原因"的疑惑有所帮助！接下来，请跟着小编一起来学习吧！

文章目录

• 操作环境

• 问题

• 分析问题

  
  

操作环境

• 操作系统版本

[root@three57 mysql57_dir]# more /etc/redhat-release Red Hat Enterprise Linux Server release 6.8 (Santiago)

• pt-query-digest版本

[root@three57 mysql57_dir]# pt-query-digest --versionpt-query-digest 3.1.0

问题

• 执行pt-query-digest报错

[root@three57 percona-toolkit-3.1.0]# pt-query-digest --interval=2 --processlist -uroot -psystemReading from STDIN ...install_driver(mysql) failed: Attempt to reload DBD/mysql.pm aborted.Compilation failed in require at (eval 23) line 3.

分析问题

• 经查baidu与perl的mysql.so库文件相关

[root@three57 percona-toolkit-3.1.0]# locate mysql.so/usr/lib64/perl5/auto/DBD/mysql/mysql.so

• 分析perl的mysql.so库文件的依赖库是否完整，可见缺失libmysqlclient.so.16

[root@three57 percona-toolkit-3.1.0]# ldd /usr/lib64/perl5/auto/DBD/mysql/mysql.so        linux-vdso.so.1 =>  (0x00007ffcf6dd4000)        libmysqlclient.so.16 => not found                      确实没找到mysql动态链接库        libz.so.1 => /lib64/libz.so.1 (0x00007f9b0e1cb000)        libcrypt.so.1 => /lib64/libcrypt.so.1 (0x00007f9b0df94000)        libnsl.so.1 => /lib64/libnsl.so.1 (0x00007f9b0dd7b000)        libm.so.6 => /lib64/libm.so.6 (0x00007f9b0daf6000)        libssl.so.10 => /usr/lib64/libssl.so.10 (0x00007f9b0d88a000)        libcrypto.so.10 => /usr/lib64/libcrypto.so.10 (0x00007f9b0d4a6000)        libc.so.6 => /lib64/libc.so.6 (0x00007f9b0d111000)        libfreebl3.so => /lib64/libfreebl3.so (0x00007f9b0cf0e000)        libgssapi_krb5.so.2 => /lib64/libgssapi_krb5.so.2 (0x00007f9b0ccca000)        libkrb5.so.3 => /lib64/libkrb5.so.3 (0x00007f9b0c9e2000)        libcom_err.so.2 => /lib64/libcom_err.so.2 (0x00007f9b0c7de000)        libk5crypto.so.3 => /lib64/libk5crypto.so.3 (0x00007f9b0c5b2000)        libresolv.so.2 => /lib64/libresolv.so.2 (0x00007f9b0c397000)        libdl.so.2 => /lib64/libdl.so.2 (0x00007f9b0c193000)        /lib64/ld-linux-x86-64.so.2 (0x000000381da00000)        libkrb5support.so.0 => /lib64/libkrb5support.so.0 (0x00007f9b0bf88000)        libkeyutils.so.1 => /lib64/libkeyutils.so.1 (0x00007f9b0bd84000)        libpthread.so.0 => /lib64/libpthread.so.0 (0x00007f9b0bb67000)        libselinux.so.1 => /lib64/libselinux.so.1 (0x00007f9b0b947000)

• libmysqlclient.so这种库文件源于mysql安装介质
  

• 查询已安装的mysql软件包

[root@three57 mysql57_dir]# rpm -qa|grep -i --color mysqlmysql-community-common-5.7.21-1.el6.x86_64mysql-community-server-5.7.21-1.el6.x86_64perl-DBD-MySQL-4.013-3.el6.x86_64mysql-community-libs-5.7.21-1.el6.x86_64mysql-community-client-5.7.21-1.el6.x86_64

• 查询已安装的libmysqlclient库文件

[root@three57 mysql57_dir]# locate /usr/lib64/mysql/libmysqlclient.so.20/usr/lib64/mysql/libmysqlclient.so.20/usr/lib64/mysql/libmysqlclient.so.20.3.8

• 综上所述，应该需要安装mysql软件包mysql-community-libs-compat

(注：它是提供mysql旧版本的共享库文件）

[root@three57 mysql57_dir]# rpm -ivh mysql-community-libs-compat-5.7.21-1.el6.x86_64.rpmwarning: mysql-community-libs-compat-5.7.21-1.el6.x86_64.rpm: Header V3 DSA/SHA1 Signature, key ID 5072e1f5: NOKEYPreparing...                ########################################### [100%]   1:mysql-community-libs-co########################################### [100%][root@three57 mysql57_dir]# locate libmysqlclient.so.16/usr/lib64/mysql/libmysqlclient.so.16/usr/lib64/mysql/libmysqlclient.so.16.0.0

• 执行ldd /usr/lib64/perl5/auto/DBD/mysql/mysql.so正常
  

[root@three57 mysql57_dir]# ldd /usr/lib64/perl5/auto/DBD/mysql/mysql.so        linux-vdso.so.1 =>  (0x00007ffd3fee9000)        libmysqlclient.so.16 => /usr/lib64/mysql/libmysqlclient.so.16 (0x00007f346d4e3000)        libz.so.1 => /lib64/libz.so.1 (0x00007f346d2cd000)        libcrypt.so.1 => /lib64/libcrypt.so.1 (0x00007f346d095000)        libnsl.so.1 => /lib64/libnsl.so.1 (0x00007f346ce7c000)        libm.so.6 => /lib64/libm.so.6 (0x00007f346cbf8000)        libssl.so.10 => /usr/lib64/libssl.so.10 (0x00007f346c98b000)        libcrypto.so.10 => /usr/lib64/libcrypto.so.10 (0x00007f346c5a7000)        libc.so.6 => /lib64/libc.so.6 (0x00007f346c213000)        libfreebl3.so => /lib64/libfreebl3.so (0x00007f346c00f000)        libgssapi_krb5.so.2 => /lib64/libgssapi_krb5.so.2 (0x00007f346bdcb000)        libkrb5.so.3 => /lib64/libkrb5.so.3 (0x00007f346bae4000)        libcom_err.so.2 => /lib64/libcom_err.so.2 (0x00007f346b8df000)        libk5crypto.so.3 => /lib64/libk5crypto.so.3 (0x00007f346b6b3000)        libresolv.so.2 => /lib64/libresolv.so.2 (0x00007f346b499000)        libdl.so.2 => /lib64/libdl.so.2 (0x00007f346b294000)        /lib64/ld-linux-x86-64.so.2 (0x000000381da00000)        libkrb5support.so.0 => /lib64/libkrb5support.so.0 (0x00007f346b089000)        libkeyutils.so.1 => /lib64/libkeyutils.so.1 (0x00007f346ae86000)        libpthread.so.0 => /lib64/libpthread.so.0 (0x00007f346ac68000)        libselinux.so.1 => /lib64/libselinux.so.1 (0x00007f346aa49000)

到此，关于"mysql执行执行pt-query-digest报错的原因"的学习就结束了，希望能够解决大家的疑惑。理论与实践的搭配能更好的帮助大家学习，快去试试吧！若想继续学习更多相关知识，请继续关注网站，小编会继续努力为大家带来更多实用的文章！