Network Manager overwrites resolv.conf
In other words, resolv.conf is either generated by NetworkManager if you have it installed or you have to configure it yourself. I've had that problem with Redhat servers where I wanted to keep NetworkManager from overwriting my static configuration of resolv.conf so I ended up setting my configuration in resolv.conf then changing the 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. Regardless of the distribution of Linux that you are using (such as Ubuntu, CentOS, Debian, Arch, Redhat, etc), the process of determining what DNS servers are currently being used for domain name resolution is the same. To determine what DNS servers are being used, you simply need to view the contents of the “/etc/resolv.conf” file. Nov 09, 2017 · Alternate workaround to make permanent changes in resolv.conf: This workaround needs a program resolvconf to be installed in your system. Normally this program is installed in many Linux systems by default but to make sure it is, use the following command in terminal (Ctrl+Alt+T ) in Ubuntu: Jan 23, 2020 · By default, the resolv.conf file is managed by the NetworkManager service. The service then populates the file with DNS servers provided by DHCP. You can stop NetworkManager from managing the resolv.conf file, which makes sure that the DNS servers provided by DHCP are ignored. Option 1. 1. Edit or create the /etc/dhcp/dhclient.conf file. Sep 02, 2019 · # tree roles/resolv.conf roles/resolv.conf/ ├── handlers │ └── main.yml ├── tasks │ └── main.yml └── templates └── resolv.conf.j2 tasks/main.yml. To be able to manage the file /etc/resolv.conf with Ansible, I first had to stop the NetworkManager from doing so. Jan 18, 2018 · Also, the /etc/resolv.conf file is generated every time the Network Manager process starts or restarts which overwrites the manual changes. Let's start with why someone would want to add search domains. Let's say your office used a domain of example.com. So the servers are named similar to server1.example.com.
Jan 23, 2020 · By default, the resolv.conf file is managed by the NetworkManager service. The service then populates the file with DNS servers provided by DHCP. You can stop NetworkManager from managing the resolv.conf file, which makes sure that the DNS servers provided by DHCP are ignored. Option 1. 1. Edit or create the /etc/dhcp/dhclient.conf file.
Red Hat Customer Portal If resolv.conf.save was present, resolv.conf was overwritten by the content of resolv.conf.save. As a consequence, unexpected changes could occur to resolve.conf. Now, the content of resolv.conf is replaced only when the device is dynamically configured or …
How to make persistent changes to the /etc/resolv.conf
DNS configuration with Ansible | Enable Sysadmin Sep 02, 2019 Re: configuring resolv.conf [mailto:rstevens vitalstream com] Sent: Thursday, July 31, 2003 2:27 PM To: redhat-install-list redhat com Subject: Re: configuring resolv.conf Goud, Venkat Ramana (Venkat) ** CTR ** wrote: I am having a problem in specifying the order to do DNS look ups on domain names. Configuring Unbound as a simple forwarding DNS server