Migrating cells to new host machines using the command-line tool

You can migrate cell configurations from a previous version of WebSphere® Application Server that is hosted on one machine to an instance of WebSphere Application Server Version 9.0 that is hosted on a different machine. The source and target host machines do not need to run the same operating system.

Restriction: Remote migration from IBM® i or z/OS is not supported.

Before you begin

This topic is about profile configuration migration, specifically migrating cells to a different host.

To clone migrate cells to a different host, see Clone migrating cells to new host machines using the command-line tools. In a clone migration, you can continue to use a source profile after you migrate it to a Version 9.0 environment.
To migrate cells on the same host, see Migrating cells using the command-line tools.
To migrate your applications to the latest version, use the WebSphere Application Server Migration Toolkit.

For resources to help you plan and perform your migration, see Knowledge Collection: Migration planning for WebSphere Application Server.

Multimedia For videos about migrating cells to a different machine, see the WebSphere Administration - Migrating cells REMOTELY using the command-line tools videos in the WebSphere Migration - Using the CMD line playlist. The steps in this topic are not for a clone migration. The videos mention clone migration steps. To not do a clone migration, do not set the -clone optional parameter to true in a WASPostUpgrade migration command.

Avoid trouble: Ensure that your setting for the maximum number of open files is 10000 or greater. If the number of open files is too low, this can cause a variety of migration failures.

About this task

This task describes how to migrate each profile in a cell configuration from a previous version of WebSphere Application Server to WebSphere Application Server Version 9.0 hosted on a different machine. The cell configuration consists of a deployment manager with one or more nodes, a web server, and an application client. All ports are migrated forward into the new configuration.

To migrate a cell configuration, you run WASPreUpgrade, WASPostUpgrade, manageprofiles, and other migration commands that are described in Using the migration tools. You can specify individual parameters on migration commands, or specify the -properties file_name.properties parameter to input a properties file.

If WebSphere Application Server Version 9.0 is not installed on the source host machine, you must generate a remote migration .jar file on the target host machine that matches the operating system of the source machine. The remote migration .jar file provides the source host with the Version 9.0 WASPreUpgrade tool, which you use to create the migration backup directory for the profile.

The WASPreUpgrade command must be run from the target WebSphere Application Server release. The source machine will not have the new version of the WASPreUpgrade command. You must do one of the following actions:

OPTION 1: Install the target product version on the source machine.
OPTION 2: Create the remote migration .jar file. The .jar file has the WASPreUpgrade command and files that are needed to support its running, including Java, collected from the target installation.

After you have the remote migration .jar file, you can run it on the source machine.

Note: OPTION 2 is easier as a full install is not needed. After the archive is created it can be used for many source machines. However, if the target and source machines are on different operating system architectures, then OPTION 1 is required because the remote migration archive is operating system architecture specific.

When the multiple source machines all have the same operating system architectures but different from the target machine, then only one source machine needs to have the target release installed. From that one source machine, the remote migration .jar can be created and used on the other source machines.

This procedure assumes that the previous configuration is running and that you are migrating all profiles to a different host machine.

For transitioning users: WebSphere Virtual Enterprise and Intelligent Management previously required separate migration tools but are now migrated as part of the standard migration procedures.

Procedure

Back up the deployment manager and all old nodes.
In case of failure during the migration, save the current deployment manager and node configuration to a file that you can use later for recovery purposes.
1. Change to the deployment_manager_profile_root/bin directory.
2. Run the backupConfig command with the appropriate parameters and save the current deployment manager profile configuration to a file.
  Replace mybackup_old_host with the location where the configuration restore points are stored.
```
previous_version_app_server_root\v70dmgr01\bin\backupConfig.bat 
\mybackup_old_host\v70dmgr01backupBeforeV90migration.zip -username myuser 
-password mypass -nostop
```
```
previous_version_app_server_root/v70dmgr01/bin/backupConfig.sh 
/mybackup_old_host/v70dmgr01backupBeforeV90migration.zip -username myuser 
-password mypass -nostop
```
3. For each node in the configuration, change to the node_profile_root/bin directory.
4. Run the backupConfig command with the appropriate parameters and save the current node profile configuration to a file.
```
previous_version_app_server_root\v70node01\bin\backupConfig.bat 
\mybackup_old_host\v70node01backupBeforeV90migration.zip -username myuser 
-password mypass -nostop
```
```
previous_version_app_server_root/v70node01/bin/backupConfig.sh 
/mybackup_old_host/v70node01rbackupBeforeV90migration.zip -username myuser 
-password mypass -nostop
```
Install WebSphere Application Server Network Deployment Version 9.0 onto each target host in a new directory.

For more information, see the installation documentation.
Create the remote migration .jar file.
This .jar file contains the files necessary to run the WASPreUpgrade command on a system which does not have WebSphere Application Server Version 9.0 installed.
Avoid trouble: You must create the remote migration JAR file on the same operating system and architecture as you installed the source. Because the archive that is generated contains operating system specific code, it runs only on this architecture.
If the operating system or architecture differs between the source and target systems, you can create the remote migration JAR file without specifying the -includeJava option. Set the JAVA_HOME environment variable to a compatible Java™ version 7 or later installation on the source system prior to running the WASPreUpgrade command. If you want to use the -includeJava option, you must create the remote migration JAR file on the same operating system and architecture as you installed the source.
1. Identify the operating system and architecture of the source profile.
  If the operating system and architecture of the source profile is different from the operation system or the architecture of the target profile, then you must install WebSphere Application Server Version 9.0 on a system that matches the source profile before creating the remote migration JAR. After you generate the remote migration JAR, it will work on any system which matches the operating system and architecture.
2. Create the remote migration .jar file.
  1. In the command prompt, enter: cd $WAS_HOME/bin/migration/bin
  2. To create the .jar file, run: createRemoteMigrJar.bat(sh) -targetDir <dir_for_the_remote_migration_jar>. This creates the following file: WAS_V90_OS.arch_RemoteMigrSupport.jar. WAS_V90_windows.amd64_RemoteMigrSupport.jar
3. Prepare the remote system for the WASPreUpgrade command.
  1. Send the .jar file to the system where your source profile resides.
  2. Extract the file to a temporary location.
  3. Change directories to the bin directory in the temporary location.
  You are now ready to run the WASPreUpgrade command against the source profile. However, do not issue this command until you are told to do so in a later step.

Create the target deployment manager profile.

The target deployment manager profile is a new deployment manager profile that is the target of the migration.

Avoid trouble: The Version 9.0 cell and node names must match the cell and node names in the previous configuration. If you create cells and nodes with new cell and node names, then the migration will fail.

To create a target deployment manager profile, run the manageprofiles command with the appropriate parameters.

version_9_install_root\bin\manageprofiles.bat 
-create -profileName v70toV90dmgr01 
-templatePath app_server_root\profileTemplates\management 
-serverType DEPLOYMENT_MANAGER -nodeName currentDmgrNodeName 
-cellName currentCellName -hostName mydmgrhost.company.com

version_9_install_root/bin/manageprofiles.sh 
-create -profileName v70toV90dmgr01 
-templatePath /opt/WebSphereV90/profileTemplates/management 
-serverType DEPLOYMENT_MANAGER -nodeName currentDmgrNodeName 
-cellName currentCellName -hostName mydmgrhost.company.com

Save the current deployment manager configuration to the migration backup directory.
To save the current deployment manager configuration to the migration backup directory, run the WASPreUpgrade command. The WASPreUpgrade command does not change the old configuration.
1. Run the WASPreUpgrade command with the -machineChange true parameter to save the current deployment manager configuration to a migration backup directory.
  Replace mybackup_old_host with the directory to which the profile configuration files are copied in preparation for the migration to the new host.
```
<path to remote migration jar>\migration\bin\WASPreUpgrade.bat 
\mybackup_old_host\v70toV90dmgr01 app_server_root 
-oldProfile 70dmgr01 -machineChange true
```
```
<path to remote migration jar>/migration/bin/WASPreUpgrade.sh 
/mybackup_old_host/v70toV90dmgr01 /opt/WebSphereV70 
-oldProfile 70dmgr01 -machineChange true
```
  If you are migrating from Version 8.0 to Version 9.0 and your profile is a deployment manager, Version 8.0 profile is stopped when WASPreUpgrade runs. The deployment manager is only started before WASPreUpgrade completes if you provide -keepDmgrEnabled true on the command line or specify the corresponding option in the Migration wizard.
  
  Avoid trouble: If you specify -machineChange true, you must update the job manager URL for all resources (such as other deployment managers or application servers) that are managed by the job manager function of the Version 8.0 deployment manager after the migration.
2. Review warnings or errors in the console output and WASPreUpgrade logs.
  After the WASPreUpgrade command is complete, check the console output for Failed with errors or Completed with warnings messages. If the output has either message, then check the following log files for any warnings or errors:
  - mybackup_old_host/v70toV90dmgr01/logs/WASPreMigrationSummary.log
  - mybackup_old_host/v70toV90dmgr01/logs/WASPreUpgrade.timestamp.log
  - mybackup_old_host/v70toV90dmgr01/logs/WASPreUpgrade.trace
  If there are errors, fix the errors and run the WASPreUpgrade command again. Check whether the warnings affect any other migration or runtime activities on Version 9.0.
  
  If the command completed successfully, it is not necessary to check the logs for errors or warnings.
Archive the backup directory created by the WASPreUpgrade command.

Avoid trouble: Do not use the Windows archive tool because it is not compatible with a WebSphere Application Server migration.
1. Use the archive tool of your choice to create a compressed file of the backup directory.
```
cd /mybackup_old_host
/opt/WebSphereV70/java/bin/jar -cf v70toV90dmgr01.jar v70toV90dmgr01/
```
2. Move the archived file to the target machine.
3. Create a directory on the target machine and extract the archived file to the new directory.
  Replace mybackup_new_host with the directory to which you are migrating your files.
```
mkdir /mybackup_new_host
cd /mybackup_new_host
/opt/WebSphereV90/java/bin/jar -xf v70toV90dmgr01.jar
```
Restore the previous deployment manager configuration.

Run the WASPostUpgrade command from the new deployment manager profile bin directory to restore the previous deployment manager configuration that you saved in the migration backup directory. If you use the options shown in the example, all ports are carried forward, and all applications are installed.
1. Run the WASPostUpgrade command to restore the saved deployment manager configuration into the new Version 9.0 deployment manager profile.
  Replace mybackup_new_host with the directory from which the source profile configuration files are migrated.
```
version_9_install_root\bin\WASPostUpgrade.bat 
\mybackup_new_host\v70toV90dmgr01 -profileName v70toV90dmgr01 
-oldProfile 70dmgr01 -resolvePortConflicts incrementCurrent 
-backupConfig true -keepDmgrEnabled true 
-username myuser -password mypass
```
```
version_9_install_root/bin/WASPostUpgrade.sh 
/mybackup_new_host/v70toV90dmgr01 -profileName v70toV90dmgr01 
-oldProfile 70dmgr01 -resolvePortConflicts incrementCurrent 
-backupConfig true -keepDmgrEnabled true 
-username myuser -password mypass
```
2. Review warnings or errors in the console output and WASPostUpgrade logs.
  After the WASPostUpgrade command is complete, check the console output for Failed with errors or Completed with warnings messages. If the output has either message, then check the following log files for any warnings or errors:
  - mybackup_new_host/v70toV90dmgr01/logs/WASPostMigrationSummary.log
  - mybackup_new_host/v70toV90dmgr01/logs/WASPostUpgrade.target profile name.timestamp.log
  - mybackup_new_host/v70toV90dmgr01/logs/WASPostUpgrade.target profile name.trace
  If there are errors, fix the errors and run the WASPostUpgrade command again. Check whether the warnings affect any other migration or runtime activities on Version 9.0.
  
  If the configuration was migrated correctly but any applications were not installed, you can run the WASMigrationAppInstaller command to install only the applications that were not migrated.
  
  If the command completed successfully, it is not necessary to check the logs for errors or warnings.
Avoid trouble: After the WASPostUpgrade command completes successfully, do not start the new deployment manager. You must complete a few more steps before starting the new deployment manager.
Save the Version 9.0 migrated deployment manager configuration to a file by running the backupConfig command on the Version 9.0 deployment manager.

Avoid trouble: If you encounter a node migration failure, you can restore the cell configuration to the point before the failure. You can apply remedial actions and the attempt the node migration again.
1. Change to the deployment_manager_profile_root/bin directory.
2. Run the backupConfig command with the appropriate parameters and save the Version 9.0 profile configuration to a file.
  Replace mybackup_new_host with the location where the configuration restore points are stored.
```
version_9_profile_root\profiles\v70toV90dmgr01\bin\backupConfig.bat 
\mybackup_new_host\v70toV90dmgr01backupMigratedDmgrOnly.zip 
-username myuser -password mypass
```
```
version_9_profile_root/profiles/v70toV90dmgr01/bin/backupConfig.sh 
/mybackup_new_host/v70toV90dmgr01backupMigratedDmgrOnly.zip 
-username myuser -password mypass
```
Stop and disable the deployment manager on the old host.
1. Stop the deployment manager on the old host.
2. Disable the deployment manager on the old host.
  To disable this deployment manager, you must rename the associated serverindex.xml file as indicated in the following information:
  
  Old name
  
  $PROFILE_ROOT/config/cells/cell_name/nodes/deployment_manager_node_name/serverindex.xml
  
  New name
  
  $PROFILE_ROOT/config/cells/cell_name/nodes/deployment_manager_node_name/serverindex.xml_disabled
Start the Version 9.0 deployment manager on the new host.
1. Change to the new Version 9.0 deployment_manager_profile_root/bin directory.
2. Run the startManager command.
3. While the deployment manager is running, check the SystemOut.log file for warnings or errors.
  
  Note: This topic references one or more of the application server log files. As a recommended alternative, you can configure the server to use the High Performance Extensible Logging (HPEL) log and trace infrastructure instead of using SystemOut.log , SystemErr.log, trace.log, and activity.log files on distributed and IBM i systems. You can also use HPEL in conjunction with your native z/OS® logging facilities. If you are using HPEL, you can access all of your log and trace information using the LogViewer command-line tool from your server profile bin directory. See the information about using HPEL to troubleshoot applications for more information on using HPEL.
  
  Check the warnings to see if they affect any node migration or runtime activities when the Version 9.0 deployment manager is started.
4. Ensure that the Version 9.0 deployment manager starts successfully.
Manually synchronize the old nodes to the new Version 9.0 deployment manager.

Ensure that the Version 9.0 deployment manager on the new host is running. You must log into the machine that contains the old nodes and run the syncNode command.
1. Stop the node agent.
2. Obtain the deployment manager host and port number and update the node_agent_profile_root/properties/wsadmin.properties file.
  Change the com.ibm.ws.scripting.host value to the new host. Change the com.ibm.ws.scripting.port value to the new port.
3. Run the syncNode command from the bin directory.
```
node_agent_install_root\bin\syncNode.bat myV90DmgrHost.mycompany.com 8879 
-username myuser -password mypass
```
```
node_agent_install_root/bin/syncNode.sh myV90DmgrHost.mycompany.com 8879 
-username myuser -password mypass
```
4. Start the node agent if synchronization is successful.
Migrate application client installations.

If the source WebSphere Application client is Version 7.0, you also must run the WASPreUpgrade and WASPostUpgrade commands to migrate the existing security settings.
1. Identify all client hosts that you must migrate.
2. Install the WebSphere Version 9.0 application client.
3. Run the Version 9.0 WASPreUpgrade command to save the Application client security settings to a migration backup directory.
```
/opt/AppClientV90/bin/WASPreUpgrade.sh /mybackup_client/v70clientToV90 /opt/AppClientV70
```
4. Run the Version 9.0 WASPostUpgrade command to restore the Application client security settings to the new Version 9.0 client.
```
/opt/AppClientV90/bin/WASPostUpgrade.sh /mybackup_client/v70clientToV90
```
Migrate nodes.

Important: These steps apply to cross-machine migrations only. If you are not completing a cross-machine migration of a node, see the information about migrating nodes in Migrating cells using the command-line tools. Ensure that the Version 9.0 deployment manager is running. For each node that you plan to migrate to Version 9.0, perform the following steps.

Avoid trouble: For the migration to be successful, you must use the same source node name but a different temporary cell name for each node that you migrate to Version 9.0 or later.
1. Install WebSphere Application Server Version 9.0 onto each target host.
  For more information, see the documentation about installing an application-serving environment.
2. Create the target node profile. Run the manageprofiles command with the appropriate parameters to create a new managed profile.
```
version_9_install_root\bin\manageprofiles.bat 
-create -profileName node1 
-templatePath \opt\WebSphereV90\profileTemplates\managed 
-nodeName currentNode1Name -cellName tempCellName 
-hostName mynode1host.company.com
```
```
version_9_install_root/bin/manageprofiles.sh 
-create -profileName node1 
-templatePath /opt/WebSphereV90/profileTemplates/managed 
-nodeName currentNode1Name -cellName tempCellName 
-hostName mynode1host.company.com
```
3. Use the remote migration .jar file that you created for migrating the deployment manager to make the WASPreUpgrade command available on the current node machine.
  Note: This step needs be done only if the source node and deployment manager are not on the same machine, and this step can be done only if the machine architecture is the same.
  For more information, see step 3 of this scenario, Create the remote migration .jar file.
4. Run the WASPreUpgrade command with the -machineChange true parameter to save the current node configuration to a migration backup directory. Choose a new directory for the backup files.
```
<path to remote migration jar>\migration\bin\WASPreUpgrade.bat 
\mybackup_old_host\v70toV90node1 \opt\WebSphereV70 
-oldProfile 70node1 -machineChange true
```
```
<path to remote migration jar>/migration/bin/WASPreUpgrade.sh 
/mybackup_old_host/v70toV90node1 /opt/WebSphereV70 
-oldProfile 70node1 -machineChange true
```
5. Check the WASPreUpgrade console output for error and warning messages.
  You might find the following messages: Failed with errors or Completed with warnings. Also, look in the following log files for error or warning messages:
  - myback_old_host/v70toV90node1/logs/WASPreMigrationSummary.log
  - myback_old_host/v70toV90node1/logs/WASPreUpgrade.timestamp.log
  - myback_old_host/v70toV90node1/logs/WASPreUpgrade.trace
  If the WASPreUpgrade command is successful, you do not need to check the log files for error or warning messages.
6. Use the archive tool of your choice to create a compressed file of the backup directory that was created by the WASPreUpgrade command.
```
cd /mybackup_old_host
/opt/WebSphereV70/java/bin/jar -cf v70toV90node1.jar v70toV90node1/
```
7. Move the archived file to the target machine.
8. Create a directory on the target machine and extract the archived file to the new directory.
```
mkdir /mybackup_new_host
cd /mybackup_new_host
/opt/WebSphereV90/java/bin/jar -xf v70toV90dmgr01.jar
```
  where mybackup_new_host is the directory from which the profile configuration files are migrated.
9. Stop the application servers on the old node, then stop the node agent on the old node.
10. Stop and disable the node on the old host.
  Ensure that you do not use the node on the old host. To disable the node, you must rename the associated serverindex.xml file as indicated in the following information:
  
  Old name
  
  $PROFILE_ROOT/config/cells/cell_name/nodes/node_name/serverindex.xml
  
  New name
  
  $PROFILE_ROOT/config/cells/cell_name/nodes/node_name/serverindex.xml_disabled
11. Run the WASPostUpgrade command to restore the saved node configuration into the new Version 9.0 managed profile.
```
version_9_install_root\bin\WASPostUpgrade.bat 
\mybackup_new_host\v70toV90node1 -profileName v70toV90node1 
-oldProfile 70node1 -resolvePortConflicts incrementCurrent 
-backupConfig true -includeApps true 
-username myuser -password mypass
```
```
version_9_install_root/bin/WASPostUpgrade.sh 
/mybackup_new_host/v70toV90node1 -profileName v70toV90node1 
-oldProfile 70node1 -resolvePortConflicts incrementCurrent 
-backupConfig true -includeApps true 
-username myuser -password mypass
```
12. Check the WASPostUpgrade console output for the following messages.
  You might find messages such as Failed with errors or Completed with warnings. Also, look in the following log files for errors or warning messages:
  - mybackup_new_host/v70toV90node1/logs/WASPostMigrationSummary.log
  - mybackup_new_host/v70toV90node1/logs/WASPostUpgrade.target_profile_name.timestamp.log
  - mybackup_new_host/v70toV90node1/logs/WASPostUpgrade.target_profile_name.trace
  Note: If the WASPostUpgrade command fails, you might need to restore the Version 9.0 deployment manager from the backup configuration file. If the WASPostUpgrade command processing ran the syncNode command, then the deployment manager is aware that the node has been migrated. The node cannot be migrated again until the deployment manager has been restored to the state before the node migration.
  
  If the configuration was migrated correctly but any applications were not installed, you can run the WASMigrationAppInstaller command to install only the applications that were not migrated.
13. Check the Version 9.0 deployment manager SystemOut.log file for error or warning messages.
  
  Note: This topic references one or more of the application server log files. As a recommended alternative, you can configure the server to use the High Performance Extensible Logging (HPEL) log and trace infrastructure instead of using SystemOut.log , SystemErr.log, trace.log, and activity.log files on distributed and IBM i systems. You can also use HPEL in conjunction with your native z/OS logging facilities. If you are using HPEL, you can access all of your log and trace information using the LogViewer command-line tool from your server profile bin directory. See the information about using HPEL to troubleshoot applications for more information on using HPEL.
14. Start the migrated Version 9.0 node agent.
15. Check the Version 9.0 deployment manager and node SystemOut.log for error or warning messages.
16. Optional: Synchronize the cell if the auto-synchronization process is not enabled.
17. Start the appropriate application servers on Version 9.0 migrated node.
18. Run the backupConfig command and save the Version 9.0 profile configuration to a file.
```
version_9_profile_root\v70toV90node1\bin\backupConfig.bat 
\mybackup_new_host\v70toV90node1.zip -username myuser 
-password mypass -nostop
```
```
version_9_profile_root/v70toV90node1/bin/backupConfig.sh 
/mybackup_new_host/v70toV90node1.zip -username myuser 
-password mypass -nostop
```
  Each time you run the backupConfig command on a specific node, use a new backup file name.
19. Save the deployment manager configuration using the backupConfig command.
  On the Version 9.0 deployment manager host, change to the deployment_manager_profile_root/bin directory. Run the backupConfig command and save the Version 9.0 profile configuration to a file.
```
version_9_profile_root\v70toV90dmgr01\bin\backupConfig.bat 
\mybackup_new_host\v70toV90dmgr01backupMigratedDmgrPlusNodeX.zip 
-username myuser -password mypass
```
```
version_9_profile_root/v70toV90dmgr01/bin/backupConfig.sh 
/mybackup_new_host/v70toV90dmgr01backupMigratedDmgrPlusNodeX.zip 
-username myuser -password mypass
```
  Note: For each node that you migrate, back up the Version 9.0 deployment manager configuration to a new backup file.
20. Repeat the previous steps for additional nodes.
Migrate plug-ins for web servers.

The product supports several different web servers, as described in the system requirements. For installation information, see the documentation for your web server type and version.
1. Ensure that the Version 9.0 deployment manager is running.
2. Update the version of the web server plug-in that is used in the cell.
3. For all application servers in the cell that you want to be served by the web server, create a new web server definition for web server plug-in.
  For more information about creating web server definitions, see Implementing a web server plug-in.

Results

You used the migration tools to migrate the cell configurations from a previous version of WebSphere Application Server to new host machines that run WebSphere Application Server Version 9.0.