How to setup static IP in Ubuntu Server 12.04?
sudo apt-get update sudo apt-get upgrade
sudo nano /etc/network/interfaces
auto eth0 iface eth0 inet static address 192.168.1.150 netmask 255.255.255.0 network 192.168.2.0 broadcast 192.168.1.255 gateway 192.168.2.1 safe
sudo nano /etc/resolv.conf
Do not edit this file by hand --your changes will be overwritten # I add this nameserver 22.214.171.124 nameserver 126.96.36.199
sudo apt-get remove dhcp-client
sudo /etc/init.d/networking restart
*Running /etc/init.d/networking restart is deprecated because it may not enable again some interfaces *Reconfiguring network interfaces... ssh stop/waiting ssh start/running,process 1438
Where is the mistake? I'm not lazy. I Googled it for 3 days but without results. I tried everything.
After reboot the
/etc/resolv.conffile is flashing to the original state.
Hmm any idea why you don't just do everything within the /etc/network/interfaces configuration folder like here: http://draalin.com/setting-up-a-static-ip-address-in-ubuntu/ Or does it make more sense to actually split things up like you did within the resolv.conf and interfaces configuration folder?
This has two independent questions:
resolv.confentries getting reset after a reboot
/etc/resolv.confworking has been changed in Ubuntu 12.04. This is because of implementation of
foundations-p-dns-resolvingas described here https://blueprints.launchpad.net/ubuntu/+spec/foundations-p-dns-resolving to overcome some limitations of static
Here you can get more details: http://www.stgraber.org/2012/02/24/dns-in-ubuntu-12-04/
You can override the new feature by removing the symbolic link
/etc/resolv.confand create a file named
/etc/resolv.confthere. But before doing that refer the link I given above and see why it is strongly discouraged.
IP Address Vs Network and Gateway Conflict (Setting up a static IP) Also, As pgschk pointed out, your IP address is not matching gateway and network entries. But that is not causing the
/etc/resolv.confto go to original state, but the reason I mentioned above.
pardon me error when writing I have 2 servers ,detail as possible removing the symbolic link /etc/resolv.conf and create a file named /etc/resolv.conf there. I've never done this before.PLEASE
I would suggest to review if any other work around listed in stgraber.org link other than removing symbolic link works for you first. But if you still like to remove the link, you can use, usual commands like 'mv /etc/resolv.conf /etc/resolv.conf.ori' or 'rm /etc/resolv.conf' and then create a new /etc/resolv.conf using your favourite text editor(like vi or nano).
I hope you intended /etc/resolv.conf, not /etc/resolv.config in the above question
Your gateway address is in a different subnet than your local IP address:
address 192.168.1.150 gateway 192.168.2.1
Also, the network address was specified in the .2 subnet also:
Do you use the 192.168.1/24 or the 192.168.2/24 subnet?
Edit: About your resolv.conf: This file is mainly updated by different packages (depending on your setup). Try specifying the nameservers in your /etc/network/interfaces file:
dns-nameservers 188.8.131.52 184.108.40.206
sudo nano /etc/network/interfaces # The primary network interface auto eth0 address 192.168.1.13 netmask 255.255.255.255 gateway 192.168.1.1 network 192.168.1.0 broadcast 192.168.1.225 dns-nameservers 220.127.116.11 18.104.22.168 dns-search mydomaine google.com
same problem *Running /etc/init.d/networking resrtart is deprecated because it may not enable again some interfaces *Reconfiguring network interfaces...
You can try this option :
/etc/resolv.confand then creat a new
sudo nano /etc/resolv.confafter that add the flag:
sudo chattr +i /etc/resolv.conf- with this
+iflag, even root can't touch this file. But if you want to change the nameserver, change the flag to be:
sudo chattr -i /etc/resolv.confthen add your new
Then try to reboot and see what happens :).
I hope this solves your problem.