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0
votes
1answer
23 views

Debian 6 Not resolving hostnames

Regards, I've run into the following issue recently following an intrusion in to my VPS: Although resolv.conf is properly configured with the correct DNS servers the VPS can not resolve hosts. I ...
-2
votes
1answer
44 views

When to use resolv.conf? [closed]

I understand resolv.conf file is used by Linux to resolve DNS lookup but I cant figure if I need to edit this file in my case. My Scenario: I am not hosting the DNS on my vps machine. I have ...
2
votes
3answers
127 views

Sendmail and nslookup resolution problems

On my Ubuntu server I've been trying to get the PHP mail() function to work by installing sendmail (I also have postfix installed but I gave up on it). However, when I try to send mail it gets queued ...
0
votes
2answers
176 views

127.0.0.1 in /etc/resolv.conf file (Debian)

I am not running DNS server on my Debian machine. However, file resolv.conf contains the following lines: nameserver 127.0.0.1 nameserver 213.186.33.99 search ovh.net Is it normal to have line ...
1
vote
2answers
94 views

Randomize DNS Nameservers

Is it possible to list multiple nameservers in /etc/resolv.conf on a Unix system and resolve dns queries using a random nameserver when making a dns query and not just the first one?
-2
votes
2answers
45 views

What is the difference between search domains and nameservers? [closed]

I've usually seen two kinds of entries in /etc/resolv.conf on certain servers. The domain-name-servers entry specifies which DNS to use for resolving hostnames to IP addresses. Recently I saw an entry ...
0
votes
1answer
231 views

How to set DNS exclusively for a Network Namespace in Linux

I've created a network namespace in Linux. I thought there was a resolv.conf file for each namespaces created but it's not the case on my system. I don't have the following path ...
0
votes
2answers
130 views

Rotating DNS servers specified by DHCP

I've got an OpenStack cluster running with about 200 CentOS instances and I've gotten a complaint from my hosting provider that the DNS traffic is getting to be too much for their servers. To address ...
0
votes
1answer
84 views

Can winbind influence name resolution in Linux

I have to Linux boxes on vagrant, the have the same /etc/resolv.conf and /etc/hosts, but one is using winbind to do SSO with Active Directory. When I try to resolve the domain controllers with: dig ...
1
vote
2answers
225 views

Debian resolver adds domain and I don't want that

I have the following problem: if I ping a non existent domain name I get a reply from an IP address # ping nosuchdomain.common PING nosuchdomain.common.myrealdomain.com (192.168.1.1) 56(84) bytes of ...
0
votes
0answers
98 views

juju deployed machine cannot update apt

So I have deployed a new installation of MAAS and JUJU on Ubuntu 12.04lts. After deploying horizon (openstack-dashboard) I encountered the django 1.5 incompatibility issue. So I logged into the ...
5
votes
2answers
276 views

Why nslookup doesn't use mdns while ping do?

In dnsmasq.conf: address=/local/127.0.0.1 In resolv.conf: # Generated by NetworkManager domain example.com search example.com nameserver 127.0.0.1 nameserver 10.66.127.17 nameserver 10.68.5.26 I ...
-2
votes
1answer
75 views

domain-search value on my clients computer [closed]

I need help with configure my DNS and DHCP server - I have spent some time searching on google but have not got any informations regarding my problem. I have an Ubuntu 12.04 server running and use ...
1
vote
1answer
59 views

Non woking domain parameter at resolv.conf

I have inserted domain test into resolv.conf and have then expected that # getent ahosts srv # getent ahosts srv.test 1.1.1.1 STREAM srv.test 1.1.1.1 DGRAM 1.1.1.1 RAW ...
2
votes
3answers
1k views

In resolv.conf, why do my search domains have a period after them?

What's the difference between server.com and server.com. in the search section of an /etc/resolv.conf file? user@host /etc/sysconfig/network-scripts $ head -n 3 /etc/resolv.conf # Generated by ...
0
votes
1answer
160 views

dhcp dns not resolving queries

I having been working through a lot issues with a setup and I reached another where I may have been staring at it for too long to see the issue. The server is reachable from the outside world. ...
4
votes
2answers
2k views

Adjusting how long Linux takes to fail over to backup DNS server listed in resolv.conf

Currently I'm using the plain vanilla linux configuration for resolv.conf... something like: nameserver 123.123.123.123 nameserver 8.8.8.8 When 123.123.123.123 goes down DNS queries become ...
1
vote
1answer
109 views

What is the purpose of using resolve.conf along with authoritative DNS?

I have a Debian 7 server that I just installed and configured. Linode is the provider. There is a file called /etc/resolv.conf that contains "members xx.xx.xx" and 2x "nameserver xx.xx.xx.xx" lines. ...
5
votes
4answers
5k views

NetworkManager is not changing /etc/resolv.conf after openvpn dns push

I've got a problem which is "NetworkManager is not updating /etc/resolv.conf after openvpn connection with dns push configured". Here's my openvpn server config: (I've changed domain name to ABC.COM ...
2
votes
1answer
11k views

DNS server can't resolve localhost name

I'm trying to set up an Apache server on my RHEL6.4 vm and can't because dnsmasq can't recognize the hostname for some reason: nslookup rhel64.example.com Server: xxx.xxx.xx.1 Address: ...
-1
votes
2answers
63 views

nameserver in resolv.conf, 1 unavailable [closed]

I have my company network and my home network configured in linux networking, using an alias interface. (pinging IPs works.) Now in resolv.conf I have timeout 1 nameserver 10.1.1.1 nameserver ...
0
votes
1answer
74 views

Get local and remote (via VPN) DNS names to resolve

Here's the scenario: Network 1 has its own DNS server, and does a great job of resolving local network names, its also set as a caching server, so it will resolve names out on the general internet. So ...
0
votes
2answers
892 views

resolv.conf search suffix limited to six domains and 256 characters

Is there a way to increase the resolv.conf search suffix limitation beyond six domains and 256 characters? This is an issue for an environment that has well over six domains to consider. I realize ...
0
votes
2answers
723 views

Why don't my server query the 2nd entry in my resolv.conf?

I have a CentOS 6.4 box. As with all the other boxes in this rack, it has two NICs: one internal (192.168.1.x) and one external (visible to the world). We run our own cacheing resolver (using ...
-1
votes
3answers
557 views

How to set a per-user resolv.conf

Is there a way to specify a per-user resolv.conf? What I found are vague references to the possibility of having a per-user host file, but I'm not interested in that, I'm actually interested in a ...
0
votes
3answers
228 views

Preferred way to add a new name server to a host in Red Hat or CentOS

I am managing a particular host machine, and I would like to locally add a new name server for it to query (i.e. not changing its name server settings via the dhcp server). It seems that there are ...
0
votes
1answer
3k views

DNS resolv conf issue - DNS doesn't resolve for certain internal addresses despite several name servers listed that can resolve

I am running ubuntu 12.10 desktop edition. I am having and issue with my DNS not resolving certain internal names on our network. We run 3 internal DNS servers. Originally the 1st one (192.168.6.1) ...
0
votes
1answer
66 views

editing /etc/resolv.conf with setup

I'm editing /etc/resolv.conf with the 'setup' utility and reboot my Redhat machine. I add two nameservers and a search. When I cat the resolv.conf file, I see search is placed on the bottom of the ...
0
votes
2answers
886 views

Is is possible to configure ISC's DHCPD to configure resolv.conf options like timeout and attempts?

The resolv.conf supports a line called options that allows for some fine tuning of the behavior of the resolver. In my environment we are using ISC's DHCPD to provide DHCP services to our services. ...
2
votes
1answer
3k views

What for is /etc/resolv.conf needed in newest Centos and Fedora?

In newest Fedora and Centos configuration of dns is in /etc/sysconfig/network-scripts/ifcg-eth0 (or other interface config). So what for is still /etc/resolv.conf needed. Since its no longer used. (I ...
0
votes
1answer
266 views

Running Aptitude / apt-get resets archive lookup address

Having a problem updating ubuntu 12.04.02 lts box using aptitude - seems that the dns lookup value is getting changed somehow whenever I run aptitude or apt-get . Example: a clean reboot: ...
5
votes
2answers
15k views

How is DNS lookup configured for OSX Mountain Lion?

If I cat my resolv.conf, I see this message: # # Mac OS X Notice # # This file is not used by the host name and address resolution # or the DNS query routing mechanisms used by most processes on # ...
0
votes
1answer
141 views

which RPM provides the file resolv.conf in Centos 6

Which RPM provides the file resolv.conf in Centos 6?
3
votes
2answers
747 views

Linux keeps retrying failed DNS server

Whenever one of the servers in /etc/resolv.conf is unreachable, Linux/glibc/whatever isn't smart enough not to retry it for a while. This results in a lot of services becoming unavailable, because a ...
5
votes
4answers
2k views

Ubuntu 12.04 host lookups extremely slow

I'm having issues with one of my servers taking a long time to look up host names. This is an Ubuntu 12.04 box, so I've tried following the new resolvconf directives. In my /etc/network/interfaces ...
0
votes
2answers
199 views

order of nameservers in resolv.conf

In which oder are the nameservers stated in resolv.conf used for name resolution? Is there a way to influence this order? Is this behavior distribution dependent? (I'm using Debian Squeeze)
0
votes
2answers
1k views

I cannot telnet www.google.com 80 on my centos, why?

On my centos I have a problem. I cannot: [root@server]# telnet www.google.com 80 telnet: www.google.com: Name or service not known www.google.com: Unknown server error [root@server]# However I ...
1
vote
2answers
485 views

Dynamically update BIND 9 Forwarders

There are two WAN interfaces to different ISP, which are configured with PEERDNS=yes and installed BIND 9 server which is configured with forward only. These interfaces are used in rotation (not ...
4
votes
2answers
6k views

Configure a DNS server per nic interface (eth0 / eth1)?

How would you configure a DNS Name Server per NIC (eth0 vs eth1) interface on RHEL/Centos 6? E.g. eth0 is on subnet 10.0.0.1/24 eth1 is on subnet 192.168.0.1/24 Any requests sent over ...
5
votes
3answers
3k views

Vagrant/VirtualBox can't resolve some domains from w/in VM

Just trying out VirtualBox & Vagrant and my initial lucid64 VM can't resolve us.archive.ubuntu.com but can resolve security.ubuntu.com, google.com and www.apple.com (but not apple.com w/out the ...
2
votes
1answer
338 views

DNS resolver prefers IPv6 CNAME in search list over IPv4 response

One of my my domains (lets say hackedd.nl) has a catch-all CNAME record pointing to hackedd.nl, which has both A and AAAA records. This all seems to work fine. However, if the /etc/resolv.conf file ...
3
votes
3answers
2k views

second nameserver in /etc/resolv.conf not picked up by wget

My resolv.conf looks like this: ; generated by /sbin/dhclient-script search mcdc nameserver 10.0.4.48 nameserver 8.8.8.8 if I do nslookup www.google.com it works nslookup www.google.com ;; Got ...
2
votes
3answers
2k views

Clients didn't switch to secondary DNS server during fail over

I have two internal dns servers set up and all my servers have both of them in the resolv.conf Our main dns server went down and suddenly no server could see each other. I edited a few of the servers ...
0
votes
2answers
243 views

using one of 2 DNSs differentiated by requested domain

I'm using some sort of a dns-proxy service (the details aren't clear but as far as I understand it works by resolving the the domain into a cloud based proxy server and returning it's address whilst ...
1
vote
5answers
7k views

configure that /etc/resolv.conf won't be modified after restart

I have Gentoo Linux amd64 installed on one of my computers. I have a static IP configured at /etc/conf.d/net: auto_eth0="true" config_eth0="192.168.1.2/24" routes_eth0="default via 192.168.1.1" ...
5
votes
2answers
1k views

Search and Domain in resolv.conf = slow lookups on Ubuntu

I have a machine running ubuntu 10.04 server. I've started getting long (5-10 second) delays when making connections to (some) sites outside of the LAN using tools like curl and wget. Using tcpdump ...
0
votes
3answers
3k views

/etc/resolv.conf keeps resetting itself

I'm running some tests on a Debian server. The network in which this server is located has two DNS servers (I don't know why and I can't change this). I used to need to point /etc/resolv.conf to one ...
-1
votes
1answer
124 views

moving Centos to a close network cause him to be slow

I have a server with Internet connection and /etc/resolv.conf with Real DNS servers. when I put the server in a close network without internet the server become very slow. I suspect that it's the DNS ...
2
votes
2answers
2k views

Adding search to resolv.conf prevents FQDN searches

I added the following line to my resolv.conf to allow for shorthand querying servers on my local domain. search local. If I have a server named myserver.local I can ping the server using "ping ...
0
votes
3answers
446 views

How does domain resolution occur when resolv.conf is blank and your server has a static IP?

I've installed ubuntu server 10.04 on a computer in my LAN. From my router control panel I set it up to be Static DHCP. My resolv.conf file had the output nameserver 192.168.1.1 I removed that ...