一、centos8配置网络环境
1.修改配置网卡配置文件
[root@localhost ~]# cat /etc/sysconfig/network-scripts/ifcfg-ens18 TYPE=Ethernet NAME=ens18 DEVICE=ens18 IPADDR=192.168.1.76 PERFIX=24 GATEWAY=192.168.1.1 NETMASK=255.255.255.0 DNS1=223.5.5.5 DNS2=202.99.160.68 ONBOOT=yes
2.修改DNS配置文件
[root@localhost ~]# vim /etc/resolv.conf # Generated by NetworkManager nameserver 223.5.5.5 nameserver 202.99.160.68
3.重启网络
[root@localhost ~]# nmcli c reload
4.验证是否可以访问外网
[root@localhost ~]# ping baidu.com PING baidu.com (110.242.68.66) 56(84) bytes of data. 64 bytes from 110.242.68.66 (110.242.68.66): icmp_seq=1 ttl=50 time=15.8 ms 64 bytes from 110.242.68.66 (110.242.68.66): icmp_seq=2 ttl=50 time=17.7 ms 64 bytes from 110.242.68.66 (110.242.68.66): icmp_seq=3 ttl=50 time=20.0 ms
二、配置阿里云网络yum源
1.下载阿里云centos8源
wget -O /etc/yum.repos.d/CentOS-Linux-BaseOS.repo http://mirrors.aliyun.com/repo/Centos-8.repo
1.1如果上一步没有wget命令，则手动下载并上传至/etc/yum.repos.d 目录下。
2.清理本地缓存。
[root@localhost yum.repos.d]# yum clean all [root@localhost yum.repos.d]# yum makecache
3.验证是否可以正常使用yum网络源
[root@localhost yum.repos.d]# yum install wget -y Last metadata expiration check: 0:02:59 ago on Fri 12 Jan 2024 03:25:53 PM CST. Dependencies resolved. ============================================================================================================================================================================================= Package Architecture Version Repository Size ============================================================================================================================================================================================= Installing: wget x86_64 1.19.5-10.el8 AppStream 734 k Transaction Summary ============================================================================================================================================================================================= Install 1 Package Total download size: 734 k Installed size: 2.8 M Downloading Packages: wget-1.19.5-10.el8.x86_64.rpm 781 kB/s | 734 kB 00:00 --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Total 779 kB/s | 734 kB 00:00 warning: /var/cache/dnf/AppStream-bf1daca1ea021975/packages/wget-1.19.5-10.el8.x86_64.rpm: Header V3 RSA/SHA256 Signature, key ID 8483c65d: NOKEY CentOS-8 - AppStream - mirrors.aliyun.com 21 kB/s | 1.6 kB 00:00 Importing GPG key 0x8483C65D: Userid : "CentOS (CentOS Official Signing Key) <security@centos.org>" Fingerprint: 99DB 70FA E1D7 CE22 7FB6 4882 05B5 55B3 8483 C65D From : http://mirrors.aliyun.com/centos/RPM-GPG-KEY-CentOS-Official Key imported successfully Running transaction check Transaction check succeeded. Running transaction test Transaction test succeeded. Running transaction Preparing : 1/1 Installing : wget-1.19.5-10.el8.x86_64 1/1 Running scriptlet: wget-1.19.5-10.el8.x86_64 1/1 Verifying : wget-1.19.5-10.el8.x86_64 1/1 Installed: wget-1.19.5-10.el8.x86_64 Complete!