事情起因：
系统版本为Centos6.6 ，因为之前同事没有采用最小化选择性安装，所以系统安装好后自带有mysql5.1的三个安装包:
[[email protected] ~]# rpm -qa | grep mysql mysql-5.1.73-3.el6_6.x86_64 mysql-devel-5.1.73-3.el6_6.x86_64 mysql-lib-5.1.73-3.el6_6.x86_64
在安装新版本mysql前，只卸载掉了 mysql 和 mysql-devel，但没能成功卸载 mysql-libs，因为存在着依赖关系，所以打算采用rpm更新操作来将其更替：
[[email protected] ~/Downloads/V137788-01]# rpm -Uvh mysql-commercial-libs-5.7.12-1.1.el6.x86_64.rpm
warning: mysql-commercial-client-5.7.12-1.1.el6.x86_64.rpm: Header V3 DSA/SHA1 Signature, key ID 5072e1f5: NOKEY
error: Failed dependencies:
mysql-commercial-common(x86-64) = 5.7.12-1.1.el6 is needed by mysql-commercial-libs-5.7.12-1.1.el6.x86_64
libmysqlclient.so.16()(64bit) is needed by (installed) postfix-2:2.6.6-6.el6_5.x86_64
libmysqlclient.so.16(libmysqlclient_16)(64bit) is needed by (installed) postfix-2:2.6.6-6.el6_5.x86_64
看来还需要添加上：mysql-commercial-common
[[email protected] ~/Downloads/V137788-01]# rpm -U mysql-commercial-libs-5.7.12-1.1.el6.x86_64.rpm mysql-commercial-common-5.7.12-1.1.el6.x86_64.rpm
warning: mysql-commercial-libs-5.7.12-1.1.el6.x86_64.rpm: Header V3 DSA/SHA1 Signature, key ID 5072e1f5: NOKEY
error: Failed dependencies:
libmysqlclient.so.16()(64bit) is needed by (installed) postfix-2:2.6.6-6.el6_5.x86_64
libmysqlclient.so.16(libmysqlclient_16)(64bit) is needed by (installed) postfix-2:2.6.6-6.el6_5.x86_64
但是这样还是没能解决，而且卸载postfix会引发更多的rpm包卸载，这样的实施成本就提高了，不是愿意看到的，所以又想到创建本地yum源来更新软件：
安装createrepo [[email protected] ~/Downloads/V137788-01]# yum install -y createrepo 创建本地yum源目录 [[email protected] ~/Downloads/V137788-01]# mkdir /opt/soft; cd /opt/soft/ 并将mysql的rpm包文件移动到这个目录下 #[[email protected] /opt/soft]# mv ~/Downloads/V137788-01/mysql* ./ =================================================================================查看 [[email protected] /opt/soft]# ls libmcrypt-2.5.8-4.3.x86_64.rpm libmcrypt-devel-2.5.8-4.3.x86_64.rpm mysql-commercial-client-5.7.12-1.1.el6.x86_64.rpm mysql-commercial-common-5.7.12-1.1.el6.x86_64.rpm mysql-commercial-devel-5.7.12-1.1.el6.x86_64.rpm mysql-commercial-embedded-5.7.12-1.1.el6.x86_64.rpm mysql-commercial-embedded-devel-5.7.12-1.1.el6.x86_64.rpm mysql-commercial-libs-5.7.12-1.1.el6.x86_64.rpm mysql-commercial-libs-compat-5.7.12-1.1.el6.x86_64.rpm mysql-commercial-server-5.7.12-1.1.el6.x86_64.rpm mysql-commercial-test-5.7.12-1.1.el6.x86_64.rpm nginx-1.9.15-1.el6.icefox.x86_64.rpm 使用createrepo创建本地yum源信息 [[email protected] /]# createrepo -v /opt/soft/ 这时会在本地yum源目录中多出一个目录(存放有本地yum源的rpm包的文件信息)[[email protected] /opt/soft]# lslibmcrypt-2.5.8-4.3.x86_64.rpmlibmcrypt-devel-2.5.8-4.3.x86_64.rpmmysql-commercial-client-5.7.12-1.1.el6.x86_64.rpmmysql-commercial-common-5.7.12-1.1.el6.x86_64.rpmmysql-commercial-devel-5.7.12-1.1.el6.x86_64.rpmmysql-commercial-embedded-5.7.12-1.1.el6.x86_64.rpmmysql-commercial-embedded-devel-5.7.12-1.1.el6.x86_64.rpmmysql-commercial-libs-5.7.12-1.1.el6.x86_64.rpmmysql-commercial-libs-compat-5.7.12-1.1.el6.x86_64.rpmmysql-commercial-server-5.7.12-1.1.el6.x86_64.rpmmysql-commercial-test-5.7.12-1.1.el6.x86_64.rpmnginx-1.9.15-1.el6.icefox.x86_64.rpmrepodata=================================================================================编辑repo文件 [[email protected] /]# vim /etc/yum.repos.d/local.repo [LC] name=local-rpm baseurl=file:///opt/soft enabled=1 gpgcheck=0 安装新版mysql [[email protected] /]# yum install mysql-commercial-libs mysql-commercial-server mysql-commercial-client mysql-commercial-devel...Installed: mysql-commercial-client.x86_64 0:5.7.12-1.1.el6 mysql-commercial-devel.x86_64 0:5.7.12-1.1.el6 mysql-commercial-libs.x86_64 0:5.7.12-1.1.el6 mysql-commercial-libs-compat.x86_64 0:5.7.12-1.1.el6 mysql-commercial-server.x86_64 0:5.7.12-1.1.el6 Dependency Installed: mysql-commercial-common.x86_64 0:5.7.12-1.1.el6 Replaced: mysql-libs.x86_64 0:5.1.73-3.el6_5 Complete!
这里问题算是解决了，安装新版mysql并将旧版移除。
总结：
1) 在使用createrepo命令创建本地rpm源信息时，要使用绝对路径而非相对路径；
2) 如果有新的软件包需要放在本地yum源中，需要再次执行createrepo更新本地rpm源信息；
3) 本地yum源能很好解决旧版软件间的依赖关系，不再需要手动一步步解决。
时间： 2024-10-13 17:17:50