Dec 31, 2019

Above you can see DNS lookup refers to /etc/hosts/ and /etc/resolv.conf. First DNS lookup look into /etc/hosts file to resove name and than it will look into /etc/resolv.conf file to resolve the host-name. Please note :- DNS lookup toots like nslookup and dig will ignore /etc/nsswitch.conf file and always refer to DNS server using /etc/resolv.conf. Jun 21, 2018 · Such is the case with DNS on Ubuntu Server. Although the /etc/resolv.conf file still exists, it is no longer where you configure your DNS nameservers. That's right, the networking changes keep on when creating container directive docker run --dns also do not change entries in /etc/resolv.conf How to change entries in /etc/resolv.conf permanently? linux docker dockerfile nameservers Jul 10, 2020 · As noted by Graham King above it overwrites resolv.conf with “nameserver 127.0.0.53” which may be valid if the service systemd-resolved hooks in there somewhere; but not just internal but also external dns lookups failed after making the changes in the article. Feb 18, 2020 · The first place you want to look for DNS settings is the /etc/resolv.conf file. It was there I noticed the DNS name server IP address was reset to IP address 127.0.0.53 , and according to KB78611 , this is as-designed and the file should never be editted.

Just removing this file (and running sudo resolvconf -u afterwards) solved my dns troubles: cat /etc/resolv.conf # Dynamic resolv.conf(5) file for glibc resolver(3) generated by resolvconf(8) # DO NOT EDIT THIS FILE BY HAND -- YOUR CHANGES WILL BE OVERWRITTEN nameserver 8.8.4.4 nameserver 8.8.8.8

How to change DNS ip address in RHEL - nixCraft

dns-nameservers 192.168.1.254 8.8.8.8 Note that one or more addresses can be given on this line, separated by spaces, and note the "s" at the end of the option name, in contrast with the resolv.conf(5) option name nameserver.

Oracle RAC etc resolv conf file Tips