詳解CentOS7更新YUM來源步驟

下面由centos教學專欄為大家介紹CentOS 7更新YUM來源步驟，希望對需要的朋友有幫助！

CentOS 7更新YUM來源步驟

國內小夥伴推薦使用阿里雲的來源

Step1 找到需要的來源

阿里巴巴開源鏡像站各種來源應有盡有，舊網域是https://mirrors.aliyun.com/

Step2 編輯CentOS7.repo檔

#/etc/yum.repos.d

，發現我的來源還是

7.4.1708

[base]
name=CentOS-$releasever - Base - mirrors.aliyun.com
failovermethod=priority
baseurl=http://mirrors.aliyun.com/centos/7.4.1708/os/x86_64/
#mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=os
gpgcheck=1
gpgkey=http://mirrors.aliyun.com/centos/RPM-GPG-KEY-CentOS-7

#released updates
[updates]
name=CentOS-$releasever - Updates - mirrors.aliyun.com
failovermethod=priority
baseurl=http://mirrors.aliyun.com/centos/7.4.1708/updates/x86_64/
#mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=updates
gpgcheck=1
gpgkey=http://mirrors.aliyun.com/centos/RPM-GPG-KEY-CentOS-7

#additional packages that may be useful
[extras]
name=CentOS-$releasever - Extras - mirrors.aliyun.com
failovermethod=priority
baseurl=http://mirrors.aliyun.com/centos/7.4.1708/extras/x86_64/
#mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=extras
gpgcheck=1
gpgkey=http://mirrors.aliyun.com/centos/RPM-GPG-KEY-CentOS-7

#additional packages that extend functionality of existing packages
[centosplus]
name=CentOS-$releasever - Plus - mirrors.aliyun.com
failovermethod=priority
baseurl=http://mirrors.aliyun.com/centos/7.4.1708/centosplus/x86_64/
#mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=centosplus
gpgcheck=1
enabled=0
gpgkey=http://mirrors.aliyun.com/centos/RPM-GPG-KEY-CentOS-7

#contrib - packages by Centos Users
[contrib]
name=CentOS-$releasever - Contrib - mirrors.aliyun.com
failovermethod=priority
baseurl=http://mirrors.aliyun.com/centos/7.4.1708/contrib/x86_64/
#mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=contrib
gpgcheck=1
enabled=0
gpgkey=http://mirrors.aliyun.com/centos/RPM-GPG-KEY-CentOS-7

這個版本的來源已經遷移到

7.5.1804

了，→地址，使用VIM將其替換

:%s/7.4.1708/7.7.1908/g

Step3 修復衝突報錯然後更新系統試試

yum -y update

<pre class="brush:php;toolbar:false">[root@liaogx ~]# yum -y update Plugin &quot;product-id&quot; can't be imported Plugin &quot;search-disabled-repos&quot; can't be imported Loaded plugins: fastestmirror Loading mirror speeds from cached hostfile  * base: mirrors.aliyun.com  * epel: mirrors.tuna.tsinghua.edu.cn  * extras: mirrors.aliyun.com  * updates: mirrors.aliyun.com Resolving Dependencies --&gt; Running transaction check ---&gt; Package ModemManager.x86_64 0:1.6.0-2.el7 will be updated ......此处略...... ---&gt; Package yum-rhn-plugin.noarch 0:2.0.1-10.el7 will be installed --&gt; Running transaction check ---&gt; Package libbytesize.x86_64 0:1.2-1.el7 will be installed ---&gt; Package python2-pytoml.noarch 0:0.1.18-1.el7 will be installed ---&gt; Package volume_key-libs.x86_64 0:0.3.9-8.el7 will be installed --&gt; Processing Conflict: initscripts-9.49.41-1.el7_5.1.x86_64 conflicts redhat-release &lt; 7.5-0.11 --&gt; Finished Dependency Resolution Error: initscripts conflicts with redhat-release-server-7.4-18.el7.x86_64  You could try using --skip-broken to work around the problem ** Found 2 pre-existing rpmdb problem(s), 'yum check' output follows: PackageKit-1.1.5-1.el7.centos.x86_64 has missing requires of PackageKit-backend rhn-check-2.0.2-17.el7.noarch has missing requires of yum-rhn-plugin &gt;= ('0', '1.6.4', '1') [root@liaogx ~]#</pre>如果報如下錯誤

Error: initscripts conflicts with redhat-release-server-7.4-18.el7.x86_64

這是更新軟體包是與原始版本衝突造成的，有兩種解決辦法

透過關鍵字initscritps排除衝突：yum update --exclude=kernel* --exclude=centos-release* --exclude=initscripts*

#刪除衝突套件：

rpm -e redhat-release-server-7.4-18.el7.x86_64 --nodeps

#########這裡使用第二種方法，把衝突的套件幹掉###

[root@liaogx ~]# rpm -e redhat-release-server-7.4-18.el7.x86_64 --nodeps
warning: file /etc/pki/rpm-gpg/RPM-GPG-KEY-redhat-release: remove failed: No such file or directory
warning: file /etc/pki/rpm-gpg/RPM-GPG-KEY-redhat-legacy-rhx: remove failed: No such file or directory
warning: file /etc/pki/rpm-gpg/RPM-GPG-KEY-redhat-legacy-release: remove failed: No such file or directory
warning: file /etc/pki/rpm-gpg/RPM-GPG-KEY-redhat-legacy-former: remove failed: No such file or directory
warning: file /etc/pki/rpm-gpg/RPM-GPG-KEY-redhat-beta: remove failed: No such file or directory
[root@liaogx ~]#

###Step4 更新系統######小白從入門到跑路必會，###sudo yum -y update###，老鳥都懂。 ###

[root@liaogx ~]# yum -y update
......此处省略10分钟......
Complete!
[root@liaogx ~]#

###更新成功 ^_^######

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