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Centos Nameserver Not Working


ping // Working fine ping example.com // ping: unknown host example.com Here is /etc/sysconfig/network-scripts/ifcfg-eth0: DEVICE="eth0" TYPE="Ethernet" IPV6INIT="no" MTU="1500" NM_CONTROLLED="yes" ONBOOT="yes" BOOTPROTO="static" IPADDR="" NETMASK="" GATEWAY="" /etc/sysconfig/network: NETWORKING=yes HOSTNAME=example.com /etc/hosts: example.com You must add DNS in interface. In this tutorial, we will go over how to set up an internal DNS server, using the BIND name server software (BIND9) on CentOS 7, that can be used by your Simple setup. Check This Out

Above the existing options block, create a new ACL block called "trusted". 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. At the end of the file, add the following line: /etc/named.conf — 4 of 4include "/etc/named/named.conf.local"; Now save and exit named.conf. Congratulations!

Centos Can't Resolve Hostname

domain-name-system centos resolution name share|improve this question edited Mar 8 '12 at 21:28 asked Mar 8 '12 at 19:54 Rick Koshi 49711121 Try adding "nameserver" to your /etc/resolv.conf Configure DNS Clients Before all of your servers in the "trusted" ACL can query your DNS servers, you must configure each of them to use ns1 and ns2 as nameservers. Deploy Server Related Tutorials DNS Tips and Tricks How to Create an Intranet with OpenVPN on Ubuntu 16.04 How To Configure BIND as a Private Network DNS Server on Ubuntu 16.04 It is important to confirm that the correct DNS servers have been specified within this file and that you can connect to them on TCP/UDP port 53.

For comparison, here's the same thing when querying 15:57:27.990270 IP > 59114 7/0/0 CNAME www.l.google.com., A, A, A, A, A, A (148) Is there any way for a planet orbiting a red dwarf in the habitable zone to not be tidally locked? If anyone has ideas, I'd be happy to hear them. Centos Ping Network Is Unreachable Email check failed, please try again Sorry, your blog cannot share posts by email.

Also, change allow-query directive from "localhost" to "trusted": /etc/named.conf — 3 of 4... Centos Can Ping Ip But Not Hostname Get the latest tutorials on SysAdmin and open source topics. Per RedHat, DNS{1,2}=

, where
is a name server address to be placed in /etc/resolv.conf if the PEERDNS directive is set to yes. your servers that are in the same datacenter as ns1).

Should I? Centos 7 Peerdns 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 On both DNS servers, ns1 and ns2, install BIND with yum:

  • sudo yum install bind bind-utils Confirm the prompt by entering y. Taking Control Back as a DM?

    Centos Can Ping Ip But Not Hostname

    How do I handle this? https://www.rootusers.com/how-to-troubleshoot-dns-client-issues-in-linux/ By default Linux will first check it's local host file /etc/hosts before querying DNS servers defined in /etc/resolv.conf. Centos Can't Resolve Hostname Sign into your account, or create a new one, to start interacting. Centos Dns Lookup Command Thanks dns centos share|improve this question asked Jul 8 '13 at 14:18 DextrousDave 2233719 add a comment| 1 Answer 1 active oldest votes up vote 4 down vote accepted I got

    Log In Sign Up Report a Bug Use this form to report bugs related to the Community Report a bug: Share Twitter Facebook Google+ Hacker News Share your Question Your question his comment is here The above configuration specifies that only your own servers (the "trusted" ones) will be able to query your DNS server. Also in nsswitch.conf what do you have configured for hosts? –Koen van der Rijt Feb 3 '15 at 9:23 @KoenvanderRijt I updated question please check that.. A question can only have one accepted answer. Centos Resolve Hostname

    Isn't the BBC being extremely irresponsible in describing how to authenticate an account-related email? Why (and when) does pattern matching with f[__] perform MUCH more quickly than _f? To get the name servers of a domain we can use the ‘whois' command as shown below. http://clearduplicatefiles.com/not-working/centos-5-dns-not-working.html In resolv.conf you configure your dns servers.

    Blueprint a sestina My cat sat on my laptop, now the right side of my keyboard types the wrong characters TSA broke a lock for which they have a master key. Ifcfg-eth0 Dns Example Even if I do: nslookup google.com it does not work, same error: cannot resolve hostname. Word for a non-mainstream belief accepted as fact by a sub-culture?

    I have read numerous other guides and I am stumped and really needyour help.

    Yes, I'm sure. If they both become unavailable, your services and applications that rely on them will cease to function properly. Quine Anagrams! (Cops' Thread) Should I have doubts if the organizers of a workshop ask me to sign a behavior agreement upfront? Centos Nslookup Not Working Issue resolved good learning process though thank for helping a noob out you can change this thread to solved now Top AlanBartlett Forum Moderator Posts: 9299 Joined: 2007/10/22 11:30:09 Location: ~/Earth/UK/England/Suffolk

    You should be able to easily adapt this setup to your own environment by replacing the host names and private IP addresses with your own. I guessed that "alex" had forgotten to add one or more DNS servers to the resolv.conf file residing in the etc directory, so in my reply I wrote to use vi Oddly enough, this does make it work. navigate here I can ping the gateway fine from the Centos box, I can Ping www.google.com and the dns server by I.P address.

    Yes, I'm sure. 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 Browse other questions tagged domain-name-system centos or ask your own question. This resolved the issue.

    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. For example, to check the "nyc3.example.com" forward zone configuration, run the following command (change the names to match your forward zone and file):

    • sudo named-checkzone nyc3.example.com /etc/named/zones/db.

      For more information about this site, please take the tour! –Aaron Copley Jul 8 '13 at 18:03 2 RHEL is extremely well documented. Build me a brick wall! Setting up your own DNS for your private network is a great way to improve the management of your servers. Should I have doubts if the organizers of a workshop ask me to sign a behavior agreement upfront?

      I then edited /etc/nsswitch.conf: Original hosts: files mdns4_minimal [NOTFOUND=return] dns mdns4 Edited hosts: files dns mdns4_minimal [NOTFOUND=return] mdns4 Now DNS works for yum and wget. allow-query { trusted; }; # allows queries from "trusted" clients ... The first DNS in your list the is the Google public DNS. Build me a brick wall!