/etc/resolv.conf is a dynamic configuration file generated by the resolvconf process: $ head /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

Mar 18, 2015 · chattr +i /etc/resolv.conf The +i option (attribute) write protects the /etc/resolv.conf file on Linux so that no one can modify it - not even the root user. If you need to remove the write protect attribute, use the following command. chattr -i /etc/resolv.conf Method 3: Use DHCP hooks. This is the method that I recommend using the most. The first line of the /etc/resolv.conf file lists the domain name in the form: domain domainname Where domainname is the name registered with the Internet governing bodies (as of this writing, the InterNIC). If you check your /etc/resolv.conf file, you should see that it now retains the static DNS servers you set in the network connection editor (Figure B). Figure B Your configured DNS servers now remain. Making /etc/resolv.conf immutable. This approach will render /etc/resolv.conf immutable so that it cannot be changed, regardless of what packages are installed or what tries to modify it. rm -f /etc/resolv.conf editor /etc/resolv.conf chattr +i /etc/resolv.conf May 29, 2013 · where address is a name server address to be placed in /etc/resolv.conf if the PEERDNS directive is set to yes. It apparently rewrites /etc/resolv.conf whether PEERDNS is set or not if you have DNS Also, at boot time the system will overwrite /etc/resolv.conf if you have SEARCH set to anything as well. Use of TCPIP.DATA and /etc/resolv.conf The TCPIP.DATA data set is also known as one of the resolver configuration data sets. In fact, this name is now more commonly used to refer to this important file in the UNIX System Services environment because the socket library contains a component called the resolver. 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

With the advent of VPN and other types of networking daemons, many things now contend for the contents of /etc/resolv.conf. resolvconf solves this by letting the daemon send their resolv.conf(5) file to resolvconf via stdin(3) with the argument -a interface instead of the filesystem. resolvconf then updates /etc/resolv.conf as

Jul 24, 2020 networking - How to prevent /etc/resolv.conf from getting If the network interfaces for your server instance is controlled by DHCP, the dhclient program will overwrite your /etc/resolv.conf file whenever the networking service is restarted. You can fix the issue by editing the "/etc/dhcp/dhclient.conf" file and adding supersede statements for domain-name , domain-search and domain-name-servers as follows:

May 10, 2015

May 10, 2015 How to change DNS ip address in RHEL - nixCraft