Forum Discussion

SplashMasterson's avatar
SplashMasterson
Level 4
11 years ago

Change Master Server Domain

Hello,

I've read some of the other posts about changing the Master Server domain name, but I did not come across an example where it is possible. Marianne has been very clear about using shortname for Master Servers and aliasing FQDN, but the server in question was a part of an acquisition and its creation was out of my hands. I've used Symantec's Professional Services to merge Backup Domains in the past, with positive results, but in this case we cannot justify the expense.

1. Is this server configured so we can modify the domain? ( MachineName = "back01", MachineNbuType = master (3) )

[root@back01 admincmd]# ./nbemmcmd -listhosts -verbose
NBEMMCMD, Version: 7.5.0.6
The following hosts were found:
back01
        MachineName = "back01"
        FQName = "back01.old_domain.net"
        MachineDescription = ""
        MachineNbuType = server (6)
back01
        ClusterName = ""
        MachineName = "back01"
        FQName = "back01.old_domain.net"
        GlobalDriveSeed = "VEND:#.:PROD:#.:IDX"
        LocalDriveSeed = ""
        MachineDescription = ""
        MachineFlags = 0x67
        MachineNbuType = master (3)
        MachineState = active for tape and disk jobs (14)
        NetBackupVersion = 7.5.0.6 (750600)
        OperatingSystem = linux (16)
        ScanAbility = 5

2. If so, our plan is to:

  • Use nbemmcmd to update the alias - MachineName = "back01" - FQName = "back01.new_domain.net"
  • Take a full catalog backup
  • Rebuild the server - to add the server to the new domain, correct file permission issues, and get a clean install
  • Restore the catalog 

Does this seem achievable? 

3. If this is all incorrect, would someone please share an `nbemmcmd -listhosts -verbose` output where domain migration is possible?

Thank you!

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  • Marianne's avatar
    Marianne
    11 years ago

    I cannot see any problem here with changing the domain.

    Not sure why you need to rebuild machine just to join a new domain?

    You should be able to join a new domain without a rebuild.

    On Linux all NBU files and folders are owned by root. So, domain change will have no effect on file permissions.

  • RamNagalla's avatar
    RamNagalla
    11 years ago

    Correct... since you are keeping the hostname of the master server as it is... and all configurations are with the hsotname(short name)  you can simply change the domain of the master.

    becasue Netbackup is also communicate with the name it registred ...

    just simply go ahead and do it..in OS level  Domain change.

  • RiaanBadenhorst's avatar
    RiaanBadenhorst
    11 years ago

    Hi,

     

    Change the domain, make sure that dns resolves the new FQDN forwards and backwards, run bpclntcmd -clear_host_cache (twice), then use nbemmcmd  to delete the aliases

     

    -deleteallaliases -alias name -machinetype type

    Deletes all aliases for a particular machine. To perform this operation you must identify the machine name and the machine type.

  • RamNagalla's avatar
    RamNagalla
    Moderator
    11 years ago

    if my understanding is correct you would like to change the FQDN with the new domain name only but not the host name of the Master , correct?

    how the bp.conf of the master have the entires.. does it have FQDN or shortname 

    also the Media server and Clients how they are populated with the Master name.. does it with FQDN or shortName?

  • SplashMasterson's avatar
    SplashMasterson
    Level 4
    11 years ago

    You are correct, I want to keep the Master Server name as "back01" but move the server into a new domain. The other posts I've seen mention that the alias can be changed, but only if the Master was created with short name.

    A few examples:

    https://www-secure.symantec.com/connect/forums/change-master-server-hostname

    https://www-secure.symantec.com/connect/forums/change-domain-name

     

    I didn't see an positive example of a configuration that can be migrated, which is what I'm curious about.

     

    As for my bp.conf

    Master Server bp.conf

    SERVER = back01

     

    Client bp.conf is the same.

  • Marianne's avatar
    Marianne
    Level 6
    11 years ago

    I cannot see any problem here with changing the domain.

    Not sure why you need to rebuild machine just to join a new domain?

    You should be able to join a new domain without a rebuild.

    On Linux all NBU files and folders are owned by root. So, domain change will have no effect on file permissions.

  • RamNagalla's avatar
    RamNagalla
    Moderator
    11 years ago

    Correct... since you are keeping the hostname of the master server as it is... and all configurations are with the hsotname(short name)  you can simply change the domain of the master.

    becasue Netbackup is also communicate with the name it registred ...

    just simply go ahead and do it..in OS level  Domain change.

  • RiaanBadenhorst's avatar
    RiaanBadenhorst
    Level 6
    11 years ago

    Hi,

     

    Change the domain, make sure that dns resolves the new FQDN forwards and backwards, run bpclntcmd -clear_host_cache (twice), then use nbemmcmd  to delete the aliases

     

    -deleteallaliases -alias name -machinetype type

    Deletes all aliases for a particular machine. To perform this operation you must identify the machine name and the machine type.

  • SplashMasterson's avatar
    SplashMasterson
    Level 4
    11 years ago

    I was hoping you would answer this, Marianne. Thank you.

    We want to rebuild the server only because it was part of an aquisision and this is an opportunity to build the server with our image.