FAQ
Hi,
I am attempting to install CDH 4.2 on my new nodes. It is having a problem
at the jdk install, my internal DNS server seems to return an IPV6 address.
I have tried disabling IPV6, but I am using a nic bond, so I can't disable
it fully. So I disabled using /sysctl.conf (added net.ipv6.conf.all.disable_ipv6
= 1)
I tried turning off ipv6 responses on my bind settings on the dns server
(using listen-on-v6 { none; };. It may be the dns forwarder that is
responding with that address, as my internal dns server only resolves the
internal hosts? It's difficult to tell, I'm not sure exactly what yum is
doing.

[root@dn1]# yum info jdk
Loaded plugins: fastestmirror, security
Could not retrieve mirrorlist
http://mirrorlist.centos.org/?release=6&arch=x86_64&repo=os error was
14: PYCURL ERROR 7 - "Failed to connect to
2a02:2498:1:3d:5054:ff:fed3:e91a: Network is unreachable"
Error: Cannot retrieve repository metadata (repomd.xml) for repository:
base. Please verify its path and try again

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  • Jaykay at May 7, 2013 at 2:54 pm
    Problem resolved.
    I have a firewall with NAT setup for my data nodes. The NAT was setup with
    the wrong internal IP addresses for the hosts.
    The IPV6 address threw me off. Yum was actually trying the ipv4 addresses
    first, then ipv6 and it responded that the ipv6 one was the problem.
    On Tuesday, May 7, 2013 2:25:27 PM UTC+1, Jaykay wrote:

    Hi,
    I am attempting to install CDH 4.2 on my new nodes. It is having a problem
    at the jdk install, my internal DNS server seems to return an IPV6 address.
    I have tried disabling IPV6, but I am using a nic bond, so I can't disable
    it fully. So I disabled using /sysctl.conf (added net.ipv6.conf.all.disable_ipv6
    = 1)
    I tried turning off ipv6 responses on my bind settings on the dns server
    (using listen-on-v6 { none; };. It may be the dns forwarder that is
    responding with that address, as my internal dns server only resolves the
    internal hosts? It's difficult to tell, I'm not sure exactly what yum is
    doing.

    [root@dn1]# yum info jdk
    Loaded plugins: fastestmirror, security
    Could not retrieve mirrorlist
    http://mirrorlist.centos.org/?release=6&arch=x86_64&repo=os error was
    14: PYCURL ERROR 7 - "Failed to connect to
    2a02:2498:1:3d:5054:ff:fed3:e91a: Network is unreachable"
    Error: Cannot retrieve repository metadata (repomd.xml) for repository:
    base. Please verify its path and try again

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postedMay 7, '13 at 1:25p
activeMay 7, '13 at 2:54p
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