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Thread: cloning discs and networking issues?

  1. #1

    Default cloning discs and networking issues?

    Hi there,

    I haven't used linux in a long time, and have to install OpenSUSE 11.3 on ten of our servers.

    What I plan to do is install OpenSUSE and all our required software on one of the servers, and then clone that drive to all the other server drives (the servers are hot swappable). My question is:

    What do I need to worry about conflict wise? So far the only conflicts I can see that I will need to address are machine name (hostname) and set unique static IP addresses?

    How can I change the machine name (ie. server01, server02 ...) and IP address? Is there any other stuff I need to change as well?

    We have a 2U file server running windows. All of the servers (1 x Win and 10 x linux) will be connected to a 24 port gigabit switch.

    Is there also any special stuff I need to do to allow access to the Windows server (file etc)?

    I will also require remote access to the servers, but assume that this will be easy to setup?

    As for sleep mode, I assume that's fairly easy to configure through the interface?

    Thanks

  2. #2

    Default Re: cloning discs and networking issues?

    rgbaguy wrote:
    > What I plan to do is install OpenSUSE and all our required software on
    > one of the servers, and then clone that drive to all the other server
    > drives (the servers are hot swappable). My question is:
    >
    > What do I need to worry about conflict wise? So far the only conflicts
    > I can see that I will need to address are machine name (hostname) and
    > set unique static IP addresses?


    You'll also need to worry about disk and partition identities. If you
    use disk ids, which are opensuse default, they won't work if you copy to
    another physical disk. If you use uuids, which are ubuntu default, or
    labels they will work but obviously the UUIDs won't actually be Unique.
    That may or may not matter.

    BTW, if you use DHCP instead of static names and addresses, you won't
    need to worry about those.

  3. #3

    Default Re: cloning discs and networking issues?

    Quote Originally Posted by djh-novell View Post
    rgbaguy wrote:
    > What I plan to do is install OpenSUSE and all our required software on
    > one of the servers, and then clone that drive to all the other server
    > drives (the servers are hot swappable). My question is:
    >
    > What do I need to worry about conflict wise? So far the only conflicts
    > I can see that I will need to address are machine name (hostname) and
    > set unique static IP addresses?


    You'll also need to worry about disk and partition identities. If you
    use disk ids, which are opensuse default, they won't work if you copy to
    another physical disk. If you use uuids, which are ubuntu default, or
    labels they will work but obviously the UUIDs won't actually be Unique.
    That may or may not matter.

    BTW, if you use DHCP instead of static names and addresses, you won't
    need to worry about those.
    Thanks for the reply Could you perhaps give me more information on the disc ids? What would I need to do then?

    Ok will look into DHCP, thanks

  4. #4
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    Default Re: cloning discs and networking issues?

    If you use a tool like clonezilla which restores the partitions as well as their ID strings, then UUIDs will work. They won't be unique but that probably doesn't matter to you.

  5. #5

    Default Re: cloning discs and networking issues?

    Quote Originally Posted by ken_yap View Post
    If you use a tool like clonezilla which restores the partitions as well as their ID strings, then UUIDs will work. They won't be unique but that probably doesn't matter to you.
    Thanks for that, so I just need to make sure that when I install I use UUIDs instead of disc ids?

    That should be some option available in the disc partitioning?

    Thanks

  6. #6
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    Default Re: cloning discs and networking issues?

    Either will work with clonezilla since it restores an exact copy of the dumped disk.

  7. #7

    Default Re: cloning discs and networking issues?

    Quote Originally Posted by ken_yap View Post
    Either will work with clonezilla since it restores an exact copy of the dumped disk.
    Ok cool, so bottom line all I need to worry about is changing the hostname and static IP (or use DHCP)?

    Thanks

  8. #8
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    Default Re: cloning discs and networking issues?

    On 2011-05-26 14:06, rgbaguy wrote:
    > Thanks for that, so I just need to make sure that when I install I use
    > UUIDs instead of disc ids?
    >
    > That should be some option available in the disc partitioning?


    Yes, in expert mode. You can also use Labels, which are easier to read.

    --
    Cheers / Saludos,

    Carlos E. R.
    (from 11.2 x86_64 "Emerald" at Telcontar)

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    Default Re: cloning discs and networking issues?

    You will probably also find that the ethernet id will be eth1 instead of eth0. This is because of the existing autogenerated udev rule that associates the MAC address with the device in /etc/udev/rules.d/70-persistent-net.rules To avoid this, you could remove the rule from this file before dumping and let each machine regenerate it at first boot.

  10. #10

    Default Re: cloning discs and networking issues?

    ken yap wrote:
    > Either will work with clonezilla since it restores an exact copy of the
    > dumped disk.


    Doesn't that mean that ids, won't work? Since the ones in files won't
    match the actual disk id? You'll need to edit the files subsequently.

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