centos_yum源配置

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详述 CentOS7 yum 源配置

yum 源配置

在vm中安装了 CentOS7 minimal ，既没有 wget 又没有 yum 源，很尴尬。
解决方法：

  1. 配置静态IP
  2. 使用阿里云Yum源，更改Yum仓库。

配置静态IP

[root@localhost ~]# cd /etc/sysconfig/network-scripts/
[root@localhost network-scripts]# vim ifcfg-ens32 

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> TYPE=Ethernet
> BOOTPROTO=static ##设置为静态IP模式
> NAME=ens32
> UUID=2626dc0c-2aa4-471f-81b4-794d83e727ac
> DEVICE=ens32
> ONBOOT=yes
> IPADDR=192.168.0.111  ## IP地址
> NETMASK=255.255.255.0 ## 必填
> GATEWAY=192.168.0.1   ## 网关
> DNS1=192.168.0.1      ## DNS解析
>

[root@localhost network-scripts]# systemctl restart network
[root@localhost network-scripts]# ping -c 4 www.baidu.com
PING www.a.shifen.com (163.177.151.110) 56(84) bytes of data.
64 bytes from 163.177.151.110 (163.177.151.110): icmp_seq=1 ttl=55 time=6.72 ms
64 bytes from 163.177.151.110 (163.177.151.110): icmp_seq=2 ttl=55 time=6.55 ms
64 bytes from 163.177.151.110 (163.177.151.110): icmp_seq=3 ttl=55 time=6.66 ms
64 bytes from 163.177.151.110 (163.177.151.110): icmp_seq=4 ttl=55 time=6.16 ms

— www.a.shifen.com ping statistics —
4 packets transmitted, 4 received, 0% packet loss, time 3006ms
rtt min/avg/max/mdev = 6.166/6.526/6.722/0.224 ms

更改Yum仓库（有 curl ）

  1. 使用 curl http://mirrors.aliyun.com/repo/Centos-7.repo 获取这个文件

  2. 备份并用第一步的内容替换系统的repo文件

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    > [root@localhost ~]# cd /etc/yum.repos.d/
    > [root@localhost yum.repos.d]# cp CentOS-Base.repo CentOS-Base.repo.bak
    > [root@localhost yum.repos.d]# vim CentOS-Base.repo
    >

    按第一步的内容修改 CentOS-Base.repo

  3. 执行yum源更新命令 

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    > yum clean all 
    > yum makecache 
    > yum update
    >

更改Yum仓库

  1. 手动下载repo文件 http://mirrors.aliyun.com/repo/Centos-7.repo
    获取到base 部分

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

  2. 备份并修改系统的repo文件

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    > [root@localhost ~]# cd /etc/yum.repos.d/
    > [root@localhost yum.repos.d]# cp CentOS-Base.repo CentOS-Base.repo.bak 
    > [root@localhost yum.repos.d]# ls
    > Centos-7.repo     CentOS-Base.repo.bak  CentOS-Debuginfo.repo  CentOS-Media.repo    CentOS-Vault.repo
    > CentOS-Base.repo  CentOS-CR.repo        CentOS-fasttrack.repo  CentOS-Sources.repo
    > [root@localhost yum.repos.d]# vim CentOS-Base.repo
    >

    按第一步的[base]修改[base]部分

  3. 执行yum源更新命令 

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    > yum clean all 
    > yum makecache 
    > yum update
    >

  4. 现在可以安装 wget 了

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    > [root@localhost ~]# cd /etc/yum.repos.d/
    > [root@localhost yum.repos.d]# yum install wget -y
    > [root@localhost yum.repos.d]# wget http://mirrors.aliyun.com/repo/Centos-7.repo
    > [root@localhost yum.repos.d]# cp Centos-7.repo CentOS-Base.repo
    >

    最后重复执行第三步。