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DNS and IP issues

Discussion in 'Bind / DNS / Nameserver Issues' started by madbmbr, Nov 18, 2008.

  1. madbmbr

    madbmbr Registered

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    Hi, I am hoping someone can help and many thanks in advance for looking at this post!!!

    I have been scouring these forums for answers but can't seem to find anything to fit our problem(s)....

    First off let me get a few of the basics out of the way....

    We are running an Intel Core 2 Duo E2180 @ 2.00GHz w/1mb cache, 4GB ram on a mid range Gigabyte MB and 2 mirroring RAID Western Digital 500gb hard drives. It is on a bonded T-1(3mbps) with 2 subnets of 8 IPs running CENTOS Enterprise Linux 5.2 i686 on xen -WHM X v3.1.0 and a kernel of 2.6.18-92.el5xen #1 SMP and WHM 11.23.2 cPanel 11.23.6-R27698. The server is newly built with a fresh minimal install of the OS and burned in for 10+ days with no apparent issues.

    And now for the problem(s)....

    We recently upgraded from a dedicated server at The Planet that was running WHM 10.xx+ (if I remember correctly). It was a Dell dual P4 Xeon, 2GB ram, 250gb RAID10 HDs, and Red Hat Linux. We were using the copy account feature of WHM on the new server and after the transfers the problems started.

    Once the transfers were done of approximatly 75 accounts (none with a dedicated IP) the transfer and DNS propogation seemed to be going ok, but some of the accounts did not seem to be showing up when the domain name was typed into a browser.

    We started looking at the DNS server to see if it was the problem. It seems to be partially the problem. The other problem seems to be the ethernet adapter and its ability to bind to the IPs.

    First off, Bind(9.3.4-6.0.2.P1.el5_2) seems to be serving some of the domain info ok but some of the domains are just not showing up at all!!! All of the zone files are correct and listed in named.conf and listed properly in /var/named but they are just not there for some reason. We have deleted the domain info in DNS and then re-added it and it still does not show up.

    We have forced re-installs of both WHM and the separate software packages and have even tried different versions of WHM and cPanel (release/curerent/edge) with no luck in curing the partial serving of domain info. We are positive that this is not an Apache problem as the domains that are not showing up can be reached by server.host.name/~username

    The other issue which may be contributing to the problem seemed to start when we added some more IPs to the box. They added ok but after an unplanned reboot the interfaces did not want to come back up.

    Under the Show or Delete Current IP Addresses the new IPs were listed in red and not green. We could delete them and re-add them with some difficulty but after re-adding them they would remain red. The interfaces could be brought up using /sbin/ifconfig eth0:1 xx.xx.xx.xx up and they would remain up unless the server is rebooted again rthen they would have to be brought back up using /sbin/ifconfig eth0:1 xx.xx.xx.xx up.

    We are at a loss as to what to do next and we are losing customers from it!!

    Please help!

    MadBmbr
     
  2. cPanelDavidG

    cPanelDavidG Technical Product Specialist

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    Feel welcome to submit a support ticket so our technical analysts can be of assistance.
     
  3. madbmbr

    madbmbr Registered

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    Issues being fixed!!

    The cPanel tech support people have worked with us to fix these issues!!! Some awesome tech people here at cPanel!!:D
     
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