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 Doubt about Terracotta fix 37 installation

Renan Kaic Lopes's profile image
Renan Kaic Lopes posted Mon May 12, 2025 08:04 AM

Hello.

We're planning to upgrade our Terracotta 10.3 clustering (iBM Memory Max) to the latest released version ( fix #37 ).

I could read the following instructions in the readme file:

8.1 Shut down the server array. A safe shutdown procedure is as follows.

    a. Shut down the mirror servers using the stop-tc-server script.
       If you are using a wrapper solution to manage the mirror servers, execute the wrapper shut
       down command to shut down the mirror servers instead of using the stop-tc-server script.

    b. Shut down the clients. A terracotta client will shut down when you shut down your application.

    c. Shut down the active servers using the stop-tc-server script.
       If you are using a wrapper solution to manage the servers, execute the wrapper shut down
       command to shut down the servers instead of using the stop-tc-server script.

8.2 This fix overwrites server scripts,wrapper configuration files and default tc-config.xml. If
    you have any custom settings defined on those files (ex:MaxDirectMemorySize), then you need to
    restore those settings back after applying the fix.

With the above, please, could you help me with the following questions?

  • So, before upgrading it, we'll need to stop all of our I.S and then stop all Terracotta running instances, right?
  • We're going to need to backup our server scripts, wrapper configuration files and the default tc-config.xml file, right?

We start-stop our Terracotta server during some I.S server maintenances/o.s upgrades with the following script long ago deployed in our environment:

IS_HOME=/WebM/IS01
NODE=IS01_1

JAVA_HOME=${IS_HOME}/jvm/jvm/

export JAVA_HOME

${IS_HOME}/Terracotta/server/bin/start-tc-server.sh  -f ${IS_HOME}/Terracotta/server/is01_tc-config.xml  -n ${NODE} > ${IS_HOME}/Terracotta/server/is01_nohup &

With the above, should we only restore the backed up start-tc-server.sh + is01_tc-config.xml files ? 

Or are going to need to setup the entire Terracotta environment again?

Thank you in advance!

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