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Centos Dns Lookup Not Working


http://mirrors.usc.edu/pub/linux/distributions/centos/6.4/updates/i386/repodata/repomd.xml: [Errno 14] PYCURL ERROR 6 - "Couldn't resolve host 'mirrors.usc.edu'" Trying other mirror. If you drop the firewall and your issue goes away, problem solved, if not, at least it's out of the way for now. 1) iptables -L see if there are any Browse other questions tagged centos dns hostname bind or ask your own question. Understanding which string breaks when one pulls on a hanging block from below Staying on track when learning theory vs learning to play Encasing a star in a perfect insulator How this contact form

If we run this same dig command again, the 300 second TTL that was returned in the answer section will continually state that the TTL is 300 seconds as the response The problem you are having is due to the understanding of a very specific term "nameserver". Thanks! Reason is We are currently arranging to move the PDC emulator role this week from IC??????

Centos 7 Dns Not Resolving

I have 2 dedicated servers, 203.230 (ns1) / 200.254 (ns2), from localhost command ‘nslookup ip' reply's succes but from internet still not working, can you please create an full example?Kind Regards Pick Randomly Between -1 or 1 I don't want to do research (First year tenure-track faculty) Can we stop recommend fontspec as first choice in case lualatex is used? SELINUX=disabled (default was 'enforcing') So I rebooted my server: shutdown -r now Now it is up and running again, but it cannot resolve any hostnames: When I do: wget http://wordpress.org/latest.tar.gz I share|improve this answer answered Feb 6 '15 at 16:09 Sindhura Bandi 285 You are right, ping resolves node1-VirtualBox to –Kranach Feb 6 '15 at 16:43 What

We are again querying for google.com and we are again returned the A record IP address of Is there any point in ultra-high ISO for DSLR [not film]? IN A ;; ANSWER SECTION: google.com. 300 IN A While the A record returned is the same in this instance, note that in this dig response we now have the Centos Dns Server Not Working Thanks for help! –Kranach Feb 6 '15 at 21:53 add a comment| Your Answer draft saved draft discarded Sign up or log in Sign up using Google Sign up using

By querying the authoritative name server directly we ensure that we are getting the most up to date response rather than a potential old cached response from our own local DNS Centos Can't Resolve Hostname If a correct response is received from the authoritative DNS server but not when querying against your own DNS server then you should investigate why your local DNS server is not Q2) other user can not use the internet I want to block the internet of the user.how it is possible? http://www.centos.org/forums/viewtopic.php?t=1055 Your Answer draft saved draft discarded Sign up or log in Sign up using Google Sign up using Facebook Sign up using Email and Password Post as a guest Name

Reply Link DotMG September 27, 2011, 7:56 amAs far as I know, the fastest and simplest way to set rDNS is to ask your Server Provider. Centos Can Ping Ip But Not Hostname more stack exchange communities company blog Stack Exchange Inbox Reputation and Badges sign up log in tour help Tour Start here for a quick overview of the site Help Center Detailed and ns2 are set correctly. How to find limit of function.

Centos Can't Resolve Hostname

Unix & Linux Stack Exchange works best with JavaScript enabled ≡ MenuHomeAboutLinux Shell Scripting TutoriaLRSS/FeednixCraftLinux and Unix tutorials for new and seasoned sysadmin.HowTo Test or Check Reverse DNS on a Linux original site All the commands used to resolve IP address to hostname and vice versa used the nameserver addresses from /etc/resolv.conf unless mentioned explicitly. Centos 7 Dns Not Resolving This post is part of our Red Hat Certified Engineer (RHCE) exam study guide series. Centos Dns Lookup Command Is it better to use Google DNS servers rather than a local one in your country?

However for making it actually work i had to restart my machines and reinstall Cloudera on my cluster. weblink Did the GoF really thoroughly explore "Pattern Space"? Local Server Configuration First off it's important to understand the ‘hosts' section of the /etc/nsswitch.conf file, the default configuration for hosts is shown below. failed: Temporary failure in name resolution. Centos 7 Dns Not Working

The users who voted to close gave this specific reason:"Questions about hardware or software used in a home setting are off-topic because they require answers that may not be practical for What are some ways that fast, long-distance communications can exist without needing to have electronic radios? Reply danieladeniji says: June 3, 2013 at 11:22 pm Thanks for your kind words. navigate here My cat sat on my laptop, now the right side of my keyboard types the wrong characters Can leaked nude pictures damage one's academic career?

But the applications do. Centos Resolve Hostname Domain are present. To fix it i had to have this: node1-VirtualBox.cs.ucl.ac.uk node1-VirtualBox as second line in my /etc/hosts.

hostname --fqdn was returning localhost.

chkconfig NetworkManager off; service NetworkManager stop Or, you can do as the first lines of /etc/resolv.conf suggests and configure your name servers in /etc/sysconfig/network-scripts/ifcfg-eth0 (Usually eth0...) DNS1= DNS2= DOMAIN=localdomain share|improve this How To Troubleshoot DNS Client Issues in Linux Posted by Jarrod on September 29, 2015 Leave a comment (0) Go to comments DNS resolution is an important service, without it functioning My boss asks me to stop writing small functions and do everything in the same loop Extract csv from .shp files? Centos Nslookup Not Working Top Display posts from previous: All posts1 day7 days2 weeks1 month3 months6 months1 year Sort by AuthorPost timeSubject AscendingDescending Post Reply Print view 9 posts • Page 1 of 1 Return

share|improve this answer answered Jul 8 '13 at 16:11 user180734 111 Thank you for your answer, but the resolv.conf file says the following, so I don't think the DNS Reboots are rarely needed in Linux unless you modify the kernel version (or a number of other cases). –user160910 Jul 8 '13 at 19:53 thank you Greg. Not the answer you're looking for? his comment is here mydomain.net, and ns2.mydomain.net that point to my home IP.

Join them; it only takes a minute: Sign up Here's how it works: Anybody can ask a question Anybody can answer The best answers are voted up and rise to the Q8) I want to allow only 2 user they can change the time and date.how it is possible?give me the full description on my email id [email protected] with each step should And a pretty solid job troubleshooting it. –jamieb Jul 21 '12 at 2:48 | show 1 more comment 6 Answers 6 active oldest votes up vote 2 down vote I have Although the programs that use /etc/nsswitch.conf or read /etc/hosts will resolve the hostname to IP addresses and vice versa.

First files will be checked, followed by DNS. Top jkhord Posts: 29 Joined: 2010/03/10 23:54:45 Location: Washington, DC Re: DNS lookups do not always work Quote Postby jkhord » 2011/08/01 20:17:46 Interestingly, re-enabling SELinux forced a relabel of everything more hot questions question feed about us tour help blog chat data legal privacy policy work here advertising info mobile contact us feedback Technology Life / Arts Culture / Recreation Science What is the most someone can lose the popular vote by but still win the electoral college?

iptables -A INPUT -p udp -m state --state NEW -m udp --dport 53 -j ACCEPT -A INPUT -p tcp -m state --state NEW -m tcp --dport 53 -j ACCEPT /etc/resolv.conf domain This can be confirmed by running the dig command again, as the TTL value will drop down until it reaches 0 and is removed from the cache completely. A reverse lookup is often referred to simply as reverse resolving, or more specifically reverse DNS lookups.The most common uses of the reverse DNS are:Anti-spamNetwork troubleshootingAvoid spammers and phishers using a Looking at the tcpdump, I am unable to see what the difference is.

However if we were to run this dig without specifying @ns1.google.com we would be querying our DNS server which is not authoritative for the google.com domain, after the first result Reply danieladeniji says: February 10, 2015 at 5:17 am Maddop: You are most welcome. more hot questions question feed about us tour help blog chat data legal privacy policy work here advertising info mobile contact us feedback Technology Life / Arts Culture / Recreation Science What is this line of counties voting for the Democratic party in the 2016 elections?

GO OUT AND VOTE What is wrong with \ch{CaO$_{(s)} + H2O$_{(l)}->Ca$^{2+}_{(aq)} + 2 OH$^-_{(aq)}} I used a solution that I happened to already have on my laptop on an exam. This site is not affiliated with Linus Torvalds or The Open Group in any way. If anyone has ideas, I'd be happy to hear them.