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  1. #1
    Join Date
    Apr 2006
    Posts
    80

    Very Strange problem!!

    When i type

    root@ldld [~]# ping www.google.com
    ping: unknown host www.google.com


    what can be the reason any help plz?

  2. #2
    Join Date
    Oct 2004
    Location
    Kerala, India
    Posts
    4,771
    The issue is with the resolvers of your server. Try adding any other nameserver IP entries in the /etc/resolv.conf file or try adding your main server IP address as your resolver.
    David | www.cliffsupport.com
    Affordable Server Management Solutions sales AT cliffsupport DOT com
    CliffWebManager | Access WHM from iPhone and Android

  3. #3
    Join Date
    Apr 2006
    Posts
    80
    thi is how my resolv looks like

    domain sms.kaik100.info
    nameserver 38.100.42.26
    nameserver 38.100.42.27

  4. #4
    Join Date
    Oct 2004
    Location
    Kerala, India
    Posts
    4,771
    You may ask your provider for another set of resolvers.
    David | www.cliffsupport.com
    Affordable Server Management Solutions sales AT cliffsupport DOT com
    CliffWebManager | Access WHM from iPhone and Android

  5. #5
    Join Date
    Apr 2006
    Posts
    80
    Quote Originally Posted by david510 View Post
    You may ask your provider for another set of resolvers.
    all websites work fine !

    i am on dedicated server.

    only problem is i can not ping any website other than the same network.

    like can nt ping google etc..

  6. #6
    Join Date
    Jun 2006
    Location
    Cluj Napoca
    Posts
    469
    david has a point. The sites will work even if the resolvers do not. Before requesting enything to your isp, try and stop the firewall and then try pinging again, if it does not work then talk to your ISP or DC
    IntoDNS - Check your DNS health and configuration
    FLEIO - OpenStack billing and control panel for service providers

  7. #7
    Are those the correct IPs in resolv.conf? Run ip addr to make sure they are allocated to your server.

  8. #8
    Join Date
    Apr 2006
    Posts
    80
    Quote Originally Posted by FirmbIT View Post
    Are those the correct IPs in resolv.conf? Run ip addr to make sure they are allocated to your server.
    yeh ips are fine.

    thats kinda strange problem :/

  9. #9
    Join Date
    Oct 2004
    Location
    Kerala, India
    Posts
    4,771
    Try adding this entry to the /etc/resolv.conf file and have a check. Make these as the first entries in the file.

    nameserver 4.2.2.1
    nameserver 4.2.2.2
    David | www.cliffsupport.com
    Affordable Server Management Solutions sales AT cliffsupport DOT com
    CliffWebManager | Access WHM from iPhone and Android

  10. #10
    Join Date
    Apr 2006
    Posts
    80
    hehe

    yeh this works
    ehhehe

  11. #11
    Join Date
    Sep 2002
    Location
    Top Secret
    Posts
    14,134
    DNS Resolvers being down can cause many issues from mail failing to what you're seeing here. The best response is not to use local ip addresses (as shown here) for a resolver, but to use something like OpenDNS resolvers. I've been using their own resolvers (on my servers and in my home network) for about a year now, and they haven't let me down yet.
    Tom Whiting, WHMCS Guru extraordinaire
    Linux problems? WHMCS Problems? Give me a shout
    Check out my WHMCS Addons

  12. #12
    Join Date
    Aug 2007
    Location
    Minneapolis
    Posts
    111
    I'd say it's an issue with ping/your firewall if you can't ping any hosts. Also as an alternative to OpenDNS, there is the 4.2.2.1 to 4.2.2.6 range of name servers. They're pretty quick all over.

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