yum安裝軟體出現無法安裝,排查網路配置確認是否能訪問外網,首先ping 8.8.8.8確認可以訪問網路,然後ping www.baidu.com確認是否配置dns解析**;
如果出現可以ping通ip,但是無法訪問**的情況,說明dns解析有問題,需要排查配置;
[root@localhost etc]# ping mirrors.tuna.tsinghua.edu.cnping: mirrors.tuna.tsinghua.edu.cn: name or service not known
[root@localhost ~]# ping mirrors.tuna.tsinghua.edu.cn一、直接修改檔案/etc/sysconfig/network-scripts/ifcfg-***ping cdnmirrors.s.tuna.tsinghua.edu.cn (101.6.8.193) 56(84) bytes of data.
64 bytes from 101.6.8.193 (101.6.8.193): icmp_seq=1 ttl=239 time=43.1 ms
64 bytes from 101.6.8.193 (101.6.8.193): icmp_seq=2 ttl=239 time=45.0 ms
[root@localhost ~]# nmcli connection show 檢視配置的網口名稱name uuid type device
enp0s31f6 4e827d4e-04d0-4113-849e-1647c693080b 802-3-ethernet enp0s31f6
[root@localhost ~]# cat /etc/sysconfig/network-scripts/ifcfg-enp0s31f6二、nmcli命令修改type=ethernet
bootproto=none
defroute=yes
ipv4_failure_fatal=no
ipv6init=yes
ipv6_autoconf=yes
ipv6_defroute=yes
ipv6_failure_fatal=no
ipv6_addr_gen_mode=stable-privacy
name=enp0s31f6
uuid=4e827d4e-04d0-4113-849e-1647c693080b
device=enp0s31f6
onboot=yes
ipaddr=192.169.8.199
prefix=24
gateway=192.169.8.254
dns1=114.114.114.114
dns2=8.8.8.8
ipv6_peerdns=yes
ipv6_peerroutes=yes
[root@localhost etc]# nmcli connection modify enp0s31f6 ipv4.dns 「114.114.114.114 8.8.8.8」三、修改/etc/resolv.conf檔案[root@localhost etc]# nmcli connection up enp0s31f6
connection successfully activated (d-bus active path: /org/freedesktop/networkmanager/activeconnection/4451)
[root@localhost etc]#
[root@localhost etc]#
[root@localhost etc]# cat /etc/sysconfig/network-scripts/ifcfg-enp0s31f6
type=ethernet
bootproto=none
defroute=yes
ipv4_failure_fatal=no
ipv6init=yes
ipv6_autoconf=yes
ipv6_defroute=yes
ipv6_failure_fatal=no
ipv6_addr_gen_mode=stable-privacy
name=enp0s31f6
uuid=4e827d4e-04d0-4113-849e-1647c693080b
device=enp0s31f6
onboot=yes
ipaddr=192.169.8.199
prefix=24
gateway=192.169.8.254
dns1=114.114.114.114
dns2=8.8.8.8
ipv6_peerdns=yes
ipv6_peerroutes=yes
[root@localhost ~]# vim /etc/networkmanager/networkmanager.conf修改或新增dns=none
[main]
#plugins=ifcfg-rh,ibft
dns=none
儲存後重啟服務
[root@localhost ~]# systemctl restart networkmanager.service
然後修改/etc/resolv.conf檔案
[root@localhost ~]# vim /etc/resolv.conf
#generated by networkmanager
nameserver 114.114.114.114
nameserver 8.8.8.8
修改後保持即可
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