[centos][yum] centos升级到特定版本

云游记

我们已知，yum upgrade命令可以将整个系统升级到最新版本。

但是很多时候，我们需要更新到指定版本，比如，当前最新的CentOS版本是7.6.1810

但是我需要更新到7.4，可以如下这样做：

 

1.  CentOS的repo是不维护历史版本的。所有历史版本都在这里，

http://vault.centos.org/

在OS里，有这样的一个repo， /etc/yum.repos.d/CentOS-Vault.repo

里边是，当前版本之前的历史版本。所以里边没有7.4 。

 

2.  更新centos-release包，拿到7,4的vault

yum install centos-release

 

3  查看所有可用的repo

yum repolist all

详见：

repo id                                                                                              repo name                                                                                                                                status
C7.0.1406-base/x86_64                                                                                CentOS-7.0.1406 - Base                                                                                                                   disabled
C7.0.1406-centosplus/x86_64                                                                          CentOS-7.0.1406 - CentOSPlus                                                                                                             disabled
C7.0.1406-extras/x86_64                                                                              CentOS-7.0.1406 - Extras                                                                                                                 disabled
C7.0.1406-fasttrack/x86_64                                                                           CentOS-7.0.1406 - Fasttrack                                                                                                              disabled       
C7.0.1406-updates/x86_64                                                                             CentOS-7.0.1406 - Updates                                                                                                                disabled       
C7.1.1503-base/x86_64                                                                                CentOS-7.1.1503 - Base                                                                                                                   disabled       
C7.1.1503-centosplus/x86_64                                                                          CentOS-7.1.1503 - CentOSPlus                                                                                                             disabled       
C7.1.1503-extras/x86_64                                                                              CentOS-7.1.1503 - Extras                                                                                                                 disabled       
C7.1.1503-fasttrack/x86_64                                                                           CentOS-7.1.1503 - Fasttrack                                                                                                              disabled       
C7.1.1503-updates/x86_64                                                                             CentOS-7.1.1503 - Updates                                                                                                                disabled       
C7.2.1511-base/x86_64                                                                                CentOS-7.2.1511 - Base                                                                                                                   disabled       
C7.2.1511-centosplus/x86_64                                                                          CentOS-7.2.1511 - CentOSPlus                                                                                                             disabled       
C7.2.1511-extras/x86_64                                                                              CentOS-7.2.1511 - Extras                                                                                                                 disabled       
C7.2.1511-fasttrack/x86_64                                                                           CentOS-7.2.1511 - Fasttrack                                                                                                              disabled       
C7.2.1511-updates/x86_64                                                                             CentOS-7.2.1511 - Updates                                                                                                                disabled
C7.3.1611-base/x86_64                                                                                CentOS-7.3.1611 - Base                                                                                                                   disabled       
C7.3.1611-centosplus/x86_64                                                                          CentOS-7.3.1611 - CentOSPlus                                                                                                             disabled      
C7.3.1611-extras/x86_64                                                                              CentOS-7.3.1611 - Extras                                                                                                                 disabled      
C7.3.1611-fasttrack/x86_64                                                                           CentOS-7.3.1611 - Fasttrack                                                                                                              disabled      
C7.3.1611-updates/x86_64                                                                             CentOS-7.3.1611 - Updates                                                                                                                disabled      
C7.4.1708-base/x86_64                                                                                CentOS-7.4.1708 - Base                                                                                                                   disabled      
C7.4.1708-centosplus/x86_64                                                                          CentOS-7.4.1708 - CentOSPlus                                                                                                             disabled
C7.4.1708-extras/x86_64                                                                              CentOS-7.4.1708 - Extras                                                                                                                 disabled
C7.4.1708-fasttrack/x86_64                                                                           CentOS-7.4.1708 - Fasttrack                                                                                                              disabled
C7.4.1708-updates/x86_64                                                                             CentOS-7.4.1708 - Updates                                                                                                                disabled
C7.5.1804-base/x86_64                                                                                CentOS-7.5.1804 - Base                                                                                                                   disabled
C7.5.1804-centosplus/x86_64                                                                          CentOS-7.5.1804 - CentOSPlus                                                                                                             disabled
C7.5.1804-extras/x86_64                                                                              CentOS-7.5.1804 - Extras                                                                                                                 disabled
C7.5.1804-fasttrack/x86_64                                                                           CentOS-7.5.1804 - Fasttrack                                                                                                              disabled
C7.5.1804-updates/x86_64                                                                             CentOS-7.5.1804 - Updates                                                                                                                disabled
C7.6.1810-base/x86_64                                                                                CentOS-7.6.1810 - Base                                                                                                                   disabled
C7.6.1810-centosplus/x86_64                                                                          CentOS-7.6.1810 - CentOSPlus                                                                                                             disabled
C7.6.1810-extras/x86_64                                                                              CentOS-7.6.1810 - Extras                                                                                                                 disabled
C7.6.1810-fasttrack/x86_64                                                                           CentOS-7.6.1810 - Fasttrack                                                                                                              disabled
C7.6.1810-updates/x86_64                                                                             CentOS-7.6.1810 - Updates                                                                                                                disabled
base/7/x86_64                                                                                        CentOS-7 - Base                                                                                                                          enabled: 10,097
base-debuginfo/x86_64                                                                                CentOS-7 - Debuginfo                                                                                                                     enabled:  7,293
base-source/7                                                                                        CentOS-7 - Base Sources                                                                                                                  enabled:      0
!c7-media                                                                                            CentOS-7 - Media                                                                                                                         disabled
centosplus/7/x86_64                                                                                  CentOS-7 - Plus                                                                                                                          disabled
centosplus-source/7                                                                                  CentOS-7 - Plus Sources                                                                                                                  enabled:      0
cr/7/x86_64                                                                                          CentOS-7 - cr                                                                                                                            disabled
epel/x86_64                                                                                          Extra Packages for Enterprise Linux 7 - x86_64                                                                                           enabled: 13,485
epel-debuginfo/x86_64                                                                                Extra Packages for Enterprise Linux 7 - x86_64 - Debug                                                                                   disabled
!epel-source/x86_64                                                                                  Extra Packages for Enterprise Linux 7 - x86_64 - Source                                                                                  disabled
epel-testing/x86_64                                                                                  Extra Packages for Enterprise Linux 7 - Testing - x86_64                                                                                 disabled
epel-testing-debuginfo/x86_64                                                                        Extra Packages for Enterprise Linux 7 - Testing - x86_64 - Debug                                                                         disabled
epel-testing-source/x86_64                                                                           Extra Packages for Enterprise Linux 7 - Testing - x86_64 - Source                                                                        disabled
extras/7/x86_64                                                                                      CentOS-7 - Extras                                                                                                                        enabled:    305
extras-source/7                                                                                      CentOS-7 - Extras Sources                                                                                                                enabled:      0
fasttrack/7/x86_64                                                                                   CentOS-7 - fasttrack                                                                                                                     disabled
updates/7/x86_64                                                                                     CentOS-7 - Updates                                                                                                                       enabled:    953
updates-source/7                                                                                     CentOS-7 - Updates Sources                                                                                                               enabled:      0
repolist: 32,133

View Code

 

4 清空缓存

yum clean all
rm -f /var/cache/yum

 

5 安装更新

通过对3中repo id的查询，可用使用如下命令，进行全局更新到指定版本

yum --disablerepo='*' --enablerepo='C7.4*' upgrade

 

6 更新指定软件

yum --disablerepo='*' --enablerepo='C7.4*,epel' update kernel

 

7 回到正确的release

centos-release是版本标识，我们应该始终保持它指示着正确的信息。

将centos-release包降级回7.4, 之后所有的默认repo便都指向了7.4。

yum --disablerepo="*" --enablerepo="C7.4.1708-*" --enablerepo="epel*" downgrade centos-release

 

8 常见问题

8.1

Error:  Multilib version problems found. This often means that the root
       cause is something else and multilib version checking is just
       pointing out that there is a problem. Eg.:
       
         1. You have an upgrade for systemd-libs which is missing some
            dependency that another package requires. Yum is trying to
            solve this by installing an older version of systemd-libs of the
            different architecture. If you exclude the bad architecture
            yum will tell you what the root cause is (which package
            requires what). You can try redoing the upgrade with
            --exclude systemd-libs.otherarch ... this should give you an error
            message showing the root cause of the problem.
       
         2. You have multiple architectures of systemd-libs installed, but
            yum can only see an upgrade for one of those architectures.
            If you don't want/need both architectures anymore then you
            can remove the one with the missing update and everything
            will work.
       
         3. You have duplicate versions of systemd-libs installed already.
            You can use "yum check" to get yum show these errors.
       
       ...you can also use --setopt=protected_multilib=false to remove
       this checking, however this is almost never the correct thing to
       do as something else is very likely to go wrong (often causing
       much more problems).
       
       Protected multilib versions: systemd-libs-219-42.el7_4.10.i686 != systemd-libs-219-57.el7.x86_64
Error: Protected multilib versions: elfutils-libs-0.168-8.el7.i686 != elfutils-libs-0.170-4.el7.x86_64
Error: Protected multilib versions: libselinux-2.5-11.el7.i686 != libselinux-2.5-14.1.el7.x86_64
Error: Protected multilib versions: elfutils-libelf-0.168-8.el7.i686 != elfutils-libelf-0.170-4.el7.x86_64
Error: Protected multilib versions: pam-1.1.8-18.el7.i686 != pam-1.1.8-22.el7.x86_64
Error: Protected multilib versions: nss-softokn-freebl-3.28.3-8.el7_4.i686 != nss-softokn-freebl-3.36.0-5.el7_5.x86_64
Error: Protected multilib versions: libsepol-2.5-6.el7.i686 != libsepol-2.5-10.el7.x86_64

 

没有解决。。。

 

来源：https://www.cnblogs.com/hugetong/p/11991702.html