centos system dns does not take effect

Solution 1:

Modify /etc/resolv.conf, add

nameserver 8.8.8.8
nameserver 8.8.4.4

and then disable NetworkManager, service NetworkManager stop, check if there are any There is no possibility of starting up, so you can continue to use the dns we defined.

(Recommended tutorial: centos usage tutorial)

Solution two (recommended):

Add dns information to the interface; edit /etc/sysconfig/network-scripts/ifcfg-ethX. The specific .d/networking restart , problem solved.

Related video tutorial sharing:

linux video tutorial

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