resolv.conf


 
Thread Tools Search this Thread
Operating Systems Linux Ubuntu resolv.conf
# 1  
Old 04-28-2010
resolv.conf

Hi,

My resolv.conf keeps overwritten. I want to have it to just keep the setting that I put in there. I tried a few solutions I found using google.
like supersede domain-name "xxx", prepend domain-name-servers xxx.xxx.xxx.xxx;
This does'nt work.

I also tried to just chmod the file to 444 (-r--r--r--).
This also does'nt work the resolv.conf keeps changing to the settings I believe it is getting from dhcp.

The last thing I tried was chattr +i, but I do not really know what chattr does can any one explain what chattr +i does?

My release I'm running:
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=8.04
DISTRIB_CODENAME=hardy
DISTRIB_DESCRIPTION="Ubuntu 8.04.4 LTS"

Options to prevent the resolv.conf getting overwritten are very welcomed.
# 2  
Old 04-28-2010
chattr +i /etc/resolv.conf means make /etc/resolv.conf immutable, i.e. no process can change it. Depending on which filesystem type you are using it may or may not work.

Your problems are due to the NetworkManager service. Lots of discussion out there on this issue. Just do a web search for "Ubuntu NetworkManager resolv.conf."

I always turn off the NetworkManager service on any system I use. I do not want some bit of software silently changing my network settings.
# 3  
Old 05-04-2010
What values are you trying to preserve? You can use the network manager to specify values for DNS servers (i.e. opendns) if you do not want to use the values provided by your ISP. You can also configure your router, in most cases, to provide specific values with the DHCP service.

Be aware that locking down the resolv.conf file will prevent DHCP from updating your gateway and DNS server information. If you travel to places with WIFI hotspots, you will not be able to connect unless you manually update the file.
# 4  
Old 05-05-2010
Quote:
Originally Posted by dunkar70
What values are you trying to preserve? You can use the network manager to specify values for DNS servers (i.e. opendns) if you do not want to use the values provided by your ISP. You can also configure your router, in most cases, to provide specific values with the DHCP service.

Be aware that locking down the resolv.conf file will prevent DHCP from updating your gateway and DNS server information. If you travel to places with WIFI hotspots, you will not be able to connect unless you manually update the file.
Well I'm running ubuntu server so the computer goes nowhere and a static ip has been configured so I don't want dhcp configuring anything.
It is also running its own dns, bind9 installed.
So iff the resolv.conf is not pointed to the server its self than the lookup will be done wrong.

The chattr +i solution worked for me but I'm still looking in to a way for disableing the networkmanager.
I have googled but I did'nt found a solution for this yet..
# 5  
Old 05-08-2010
Hi,
This is my opinion.
1. Just find out how to configure /etc/network/interfaces to set up a fixed ip for your server.
2. Then type,
/etc/init.d/networking restart.
3.Manually type in the ip address in /etc/resolv.conf.
This would probably solve the issue.
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. Solaris

Configure resolv.conf and nsswitch.conf

Hi, I've installed Solaris 11.3(live media) and configured DNS. Everytime I reboot the server, resolv.conf got deleted and it created a new nsswitch.conf. I used below to configure both settings: # svccfg -s dns/client svc:/network/dns/client> setprop config/nameserver = (xx.xx.xx.aa... (1 Reply)
Discussion started by: flexihopper18
1 Replies

2. Red Hat

Issue on resolv.conf

Hi all, :( I am facing issue while I have updated in resolv.conf, after nework service restart, it was automatically deleted IP from resolv.conf file. Could you please let me know what is the reason resolv.conf deleted any IP which I have manually updated, but it store only my router IP... (3 Replies)
Discussion started by: Pradipta Kumar
3 Replies

3. Red Hat

save resolv.conf in linux

hi, I use red hat linux . When I start up network service . I get below error in eth2 root@vls etc]# service network restart Shutting down interface eth2: Shutting down loopback interface: Bringing up loopback interface: Bringing up interface eth2: RTNETLINK answers: File exists Error... (10 Replies)
Discussion started by: chuikingman
10 Replies

4. UNIX for Dummies Questions & Answers

Search directive in resolv.conf

Hi all, I am doing an assignment and there is something I am confused about. The requirement is to set up the DNS and sendmail to two domains: lab1 and lab2, with hosts of mail.lab1 and mail.lab2 both acting as DNS server and email server, and send mail from root@lab1 to root@lab2. However, it... (4 Replies)
Discussion started by: tetelee
4 Replies

5. UNIX for Dummies Questions & Answers

resolv.conf

Hi everyone A quick question during a audit this was determined to be a security issue In the resolv.conf there is a “.” At the end of the domain name Like this domain mydomain.com. I which to understand the function or significance of the . thk (3 Replies)
Discussion started by: Ex-Capsa
3 Replies

6. Shell Programming and Scripting

resolv.conf

HI ALL I am making a script,That will does the following,I am in search of ideas 1.Script will comment all existing the entries in resolve.conf 2.Add new entries like this abc.example.com 192.168.1.x I can use sed to add comment. (8 Replies)
Discussion started by: aliahsan81
8 Replies

7. Solaris

resolv.conf & the internet

Hi I have DNS setup on Solaris 10 thought it isn't reoslveing Internet addresses properly If I traceroute The UNIX and Linux Forums - the Top UNIX & Linux Q&A on the Web, I get to a hop to my DSL router but no further hops - DNS Client & Multicast services are running - nsswitch.conf is... (1 Reply)
Discussion started by: stevie_velvet
1 Replies

8. SuSE

Suse 10 resolv.conf

I want to have 7 search domains in my resolv.conf, but it seems to like only the first six. I read somewhere that the OS will only recognize the first 6 (or the first 154 characters). Is that the case with SUSE 10? thx -Kevin (2 Replies)
Discussion started by: kjbaumann
2 Replies

9. UNIX for Dummies Questions & Answers

dns and resolv.conf

Hi ,,still struggling with unix ,,the system is running sco openserver release 5 and have dsl installed ,, the dsl modem is a bt router which in turn is connected to a vpn hardware router,, which also serves internet to the whole network ,, but i still cant connect to the internet via the unix box... (10 Replies)
Discussion started by: b03der
10 Replies

10. IP Networking

/etc/resolv.conf

I am new to unix. I have edited the /etc/resolv.conf. It shows domain name ip address ip address These are the same ips of the dns I use for windows. Still I get no name resolution on the internet. I can ping external ip's is there anything else I need to check? (1 Reply)
Discussion started by: rpnhavoc
1 Replies
Login or Register to Ask a Question