How to change the Hostname or IP Address on a SpectroSERVER or OneClick Server in Spectrum 9.3.x and 9.4.x?

Document ID : KB000011537
Last Modified Date : 14/02/2018
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Introduction:

The IP or HostName of the SS or OC server changed in Spectrum 9.3.x or 9.4.x

Question:

We need to change the IP Address and Hostname of our servers running Spectrum. Will this have an impact on Spectrum? What are the requirements for making these changes?

 

Answer:

 

IP Address Changes 

After you have changed the IP of your SpectroSERVER or OneClick server machine, make sure the SpectroSERVER and the OneClick server machine(s) can all ping each other by IP.

Likewise, make sure all machines running Spectrum applications and/or integrations can ping the SpectroSERVER(s) and OneClick server(s) by IP, and vice-versa (make sure the servers can ping the machines running the apps). It might help to add the IPs and hostnames to the /etc/hosts files on all SpectroSERVERs and OneClick servers. In Windows, the hosts file is in Windows\System32\drivers\etc. Edits to hosts files take effect immediately. Sometimes it takes DNS servers a while to catch up, and less frequently firewall ACLs need to get updated to let traffic through. In the latter case, the pings might succeed, while a firewall might block TCP. If that's the case, just have the ACLs edited to replace the old IPs with the new ones. See the Distributed SpectroSERVER Administrator Guide for details of the ports Spectrum uses.

Your managed devices will need to have the new SpectroSERVER IPs in their trap server lists, and if it's practical, you could remove the old IPs from those lists. You could accomplish this for the devices supported by the Network Configuration Manager (NCM), via an upload task. See the Network Configuration Manager User Guide for information on upload tasks.

After you change the IP on a SpectroSERVER machine, you need to save, initialize and load the database to stamp it with the new IP.

 

Hostname Changes

With few exceptions, Spectrum servers communicate via SSAPI and Corba. Both of these only use hostnames (not IP addresses).

The files that need to be changed are:

 

On a SpectroSERVER:

  •  $SPECROOT/.hostrc
  •  $SPECROOT/.installrc
  •  $SPECROOT/UI-CONFIG.<hostname>
  •  $SPECROOT/LS/.locrc
  •  $SPECROOT/.LocalRegFile
  •  $SPECROOT/.corbarc
  •  $SPECROOT/SG-Support/CsResource/preferences/ssroe.prf
  •  $SPECROOT/vnmsh/.vnmshrc

 

On a OneClick Server:

  •  $SPECROOT/tomcat/webapps/spectrum/META-INF/context.xml
  •  $SPECROOT/.hostrc
  •  $SPECROOT/.installrc
  •  $SPECROOT/UI-CONFIG.<hostname>

 

Note that if the hostname of the Main Location Server (MLS) is changed, then all SpectroSERVERs and OneClick servers in the distributed environment must be updated.

The link below is contains a script that can be used to make the needed changes to all of the above files.  It can be run on a SpectroSERVER or a OneClick server. If you are running the script form a Windows server, you will need to execute the script form a 'bash -login' shell. CA does not support the script.

Change_Spectrum_Hostname.zip

 

 To run the script:

  1.  Stop the SpectroSERVER and processd.
  2.  Change the hostname on the server.
  3.  Reboot the Server.
  4.  Stop processd (go to /lib/SDPM and execute processd --stop, or you can stop the Spectrum processd service in Windows services)
  5.  From a bash shell, execute the Change_Spectrum_Hostname.pl script.
  6.  Start processd and the SpectroSERVER or OneClick server.

 

File Attachments:
TEC1233986.zip