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Migration Guide

Red Hat JBoss Fuse

Migrating to Red Hat JBoss Fuse 6.2.1

Red Hat

Version 6.2.1

Copyright © 2011-2015 Red Hat, Inc. and/or its affiliates.

21 Sep 2017

Abstract

Use this guide to help you when when upgrading to the latest version of Red Hat JBoss Fuse.

Chapter 1. What's New
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Abstract

This section describes the main features and changes in version 6.2.1.

1.1. New Features
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With the release of JBoss Fuse 6.2.1, you can now choose freely between two alternative container technologies: JEE (JBoss EAP), or OSGi (Apache Karaf). Both container types now offer a very similar technology stack (SwitchYard, Apache Camel, Apache CXF, and so on), so you can choose your preferred container type without limiting your options.
The main features in version 6.2.1 are:

1.2. Technology Preview Features
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This release of JBoss Fuse does not introduce any new technology preview features.
Note
For details on what technical preview means, see https://access.redhat.com/support/offerings/techpreview/.

1.3. Important Notes
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Increased JAVA_MAX_MEM requirement
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In JBoss Fuse 6.2.1, the recommended value for the maximum memory allocated to the JVM of the Apache Karaf container is 1024 MB. This value is specified in the InstallDir/bin/setenv file (or InstallDir\bin\setenv.bat on Windows O/S) in an Apache Karaf container installation.
For example, the default settings for the Apache Karaf JVM in the 6.2.1 distribution are now: 
#
# The following section shows the possible configuration options for the default
# karaf scripts
#
JAVA_MIN_MEM=512M # Minimum memory for the JVM
JAVA_MAX_MEM=1024M # Maximum memory for the JVM
JAVA_PERM_MEM=128M # Minimum perm memory for the JVM
JAVA_MAX_PERM_MEM=256M # Maximum memory for the JVM
...
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Migration from Apache OpenJPA to Hibernate
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Since JBoss Fuse 6.2.0, the Hibernate libraries have been shipped with JBoss Fuse. If you use the Java Persisence Architecture (JPA) in your applications, it is recommended that you migrate away from OpenJPA and adopt the Hibernate JPA implementation instead. Red Hat can offer better support on the Hibernate JPA implementation. Apache OpenJPA is now deprecated and support for OpenJPA is likely to be discontinued in a future release.

Chapter 2. Deprecated and Removed Features
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bin/deletefabric8 script is deprecated
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The bin/deletefabric8 script is deprecated and will be removed in a future release.

bin/patch script is deprecated
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The bin/patch script (bin\patch.bat on Windows O/S) is deprecated and will be removed in a future release.

BPEL is deprecated
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BPEL (based on the Riftsaw project) is no longer being actively developed and will be removed from a future release of JBoss Fuse. If you are currently using BPEL, it is recommended that you consider migrating to the Red Hat JBoss BPM Suite (which is supported through the JBoss Fuse Integration Package).

S-RAMP is deprecated
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The SOA Repository Artifact Model and Protocol (S-RAMP) component is deprecated in 6.2.1 and will be removed from a future release.

Design Time Governance is deprecated
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The Design Time Governance component is deprecated in 6.2.1 and not included with the product.

Apache OpenJPA is deprecated
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The Apache OpenJPA implementation of the Java Persistence API (JPA) is deprecated in 6.2.1. It is recommended that you use the Hibernate implementation instead.

Spring Dynamic Modules (Spring-DM) is deprecated
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Spring-DM (which integrates Spring XML with the OSGi service layer) is deprecated in 6.2.1 and you should use the Blueprint framework instead. Using Blueprint does not prevent you from using the Java libraries from the Spring framework: the latest version of Spring is compatible with Blueprint.

Chapter 3. Migration Paths for JBoss Fuse 6.2.1
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Migration Path for JBoss Fuse 6.2.1 on Karaf
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The following version of JBoss Fuse can be migrated direct to JBoss Fuse 6.2.1 using the new patching process (see Chapter 4, Migrating JBoss Fuse from 6.2.0 to 6.2.1 on Karaf):
  • Fuse 6.2.0
For older versions of JBoss Fuse (for example, 6.0 or 6.1), there is no automated migration path.

Migration Path for JBoss Fuse 6.2.1 on EAP
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There is no automated migration path to JBoss Fuse 6.2.1 on EAP from JBoss Fuse Service Works 6.0 (FSW 6.0). Users of FSW 6.0, will need to make a new installation of JBoss Fuse 6.2.1 on JBoss EAP. After a successful installation, any existing deployments will need to be re-deployed to the new system. For installation information please see Installation on JBoss EAP and for deployment information see Deployment in the Management Console.

Abstract

If you have already deployed an instance of JBoss Fuse 6.2.0 Apache Karaf container, you can upgrade your 6.2.0 installation to version 6.2.1 using the new patching mechanism. The procedure for migrating a standalone container is different from the procedure for migrating a collection of Fabric containers. Follow the appropriate set of instructions for your system.

Overview
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The instructions in this section are for upgrading an existing JBoss Fuse 6.2.0 Apache Karaf installation, which is deployed as a standalone container (in other words, not using Fabric), to version 6.2.1.

New patching mechanism
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Upgrading from JBoss Fuse 6.2.0 to 6.2.1 requires the new patching mechanism, which is implemented for the first time in 6.2.1. This presents a bootstrapping problem: the existing 6.2.0 installation must be enhanced to support the new patching mechanism before you can install patch version 6.2.1. The upgrade procedure therefore consists of two distinct phases, as follows:
  1. Install the patch management enablement pack for 6.2.0, which replaces the existing patch mechanism with the new patching mechanism. In all other respects, the container remains at version 6.2.0.
  2. Install the 6.2.1 patch in the standalone container using the new patch mechanism. After this step, the container is upgraded fully to version 6.2.1.

Initial system
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The starting point for this patching procedures is assumed to be an installation of Red Hat JBoss Fuse 6.2.0 Full Install (jboss-fuse-full-6.2.0.redhat-133.zip). This can be a container instance that you have customized in various ways, by adding application bundles and features, or even by editing configuration files under the etc/ directory.
Note
The new patching process is usually non-destructive, preserving any customizations made before the patch was applied. If a merge conflict cannot be resolved automatically, however, warning messages will be generated in the log file.

Download the required packages
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To patch JBoss Fuse from 6.2.0 to 6.2.1 you require the following packages:
patch-management-for-fuse-620-6.2.1.redhat-084.zip
Available as the download file, Red Hat JBoss Fuse 6.2.1 on Karaf Update Installer.
jboss-fuse-full-6.2.1.redhat-084.zip
Available as the download file, Red Hat JBoss Fuse 6.2.1 on Karaf Installer.

Applying the 6.2.1 patch to a standalone container
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To upgrade a JBoss Fuse 6.2.0 standalone container to version 6.2.1, proceed as follows:
  1. Make a full backup of your JBoss Fuse 6.2.0 installation before attempting to apply the patch. In particular, if you made any custom changes to the etc/org.ops4j.pax.logging.cfg file, make sure that you back it up. The patch process for 6.2.1 will over-write this file and you will need to re-apply your changes to it.
  2. Install the patch management enablement pack for 6.2.0, patch-management-for-fuse-620-6.2.1.redhat-084.zip, on top of your 6.2.0 installation. Use an archive utility to extract the contents on top of the existing 6.2.0 installation.
    The patch management enablement pack contains the following files: 
    patches/jboss-fuse-full-6.2.0.redhat-133-baseline.zip  
system/io/fabric8/patch/patch-commands/1.2.0.redhat-621084/patch-commands-1.2.0.redhat-621084.jar  
system/io/fabric8/patch/patch-management/1.2.0.redhat-621084/patch-management-1.2.0.redhat-621084.jar  
system/io/fabric8/patch/patch-features/1.2.0.redhat-621084/patch-features-1.2.0.redhat-621084-features.xml  
system/io/fabric8/patch/patch-core/1.2.0.redhat-621084/patch-core-1.2.0.redhat-621084.jar
    Copy to Clipboard Toggle word wrap
    Note
    It does not matter whether the container is running or not when you extract these files.
  3. Start the container, if it is not already running.
  4. Enable the new patch management commands in the old 6.2.0 container, by entering the following console commands: 
    features:uninstall patch
features:removeurl mvn:io.fabric8.patch/patch-features/1.2.0.redhat-133/xml/features
features:addurl mvn:io.fabric8.patch/patch-features/1.2.0.redhat-621084/xml/features 
features:install patch
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    The effect of this is to replace the old patch commands by the new patch commands in the existing 6.2.0 container, thereby bootstrapping the new patch mechanism (which is needed to install the 6.2.1 patch).
  5. Before proceeding to the next phase, verify that the new patch commands have been successfully installed. Enter the following command: 
    JBossFuse:karaf@root> list -s -t 0 | grep -i patch
[ 265] [Active     ] [            ] [       ] [    2] io.fabric8.patch.patch-management (1.2.0.redhat-621084)
[ 266] [Active     ] [            ] [       ] [   80] io.fabric8.patch.patch-core (1.2.0.redhat-621084)
[ 267] [Active     ] [            ] [       ] [   80] io.fabric8.patch.patch-commands (1.2.0.redhat-621084)
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    Check that the preceding bundles and only these bundles are output by this command.
  6. Add the 6.2.1 patch to the container's environment using the patch:add command (remembering to customize the path to the patch file), as follows: 
    JBossFuse:karaf@root> patch:add file:///path/to/jboss-fuse-full-6.2.1.redhat-084.zip
[name]                           [installed] [description]                   
jboss-fuse-full-6.2.1.redhat-084 false       jboss-fuse-full-6.2.1.redhat-084
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    Note
    In this case, the patch file is the full distribution of JBoss Fuse 6.2.1. Under the new patching mechanism, the full distribution file has a dual purpose: you can extract the archive directly to create a fresh 6.2.1 distribution; or you can add the file as a patch to migrate an existing 6.2.0 installation to 6.2.1.
  7. Simulate installing the patch using the patch:simulate command.
    This will generate a log of the changes that will be made to the container when the patch is installed, but will not make any actual changes to the container. Review the simulation log to understand the changes that will be made to the container.
  8. Apply the patch to the container using the patch:install command: 
    patch:install jboss-fuse-full-6.2.1.redhat-084
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    Note
    Make sure that the container has fully started before you run patch:install.
  9. After installing the patch, the container shuts down automatically. At this point, the data/cache directory is empty, but it will be repopulated when the container starts up again.
    Note
    (Windows O/S only) At this point, it is likely that the bin\fuse.bat script (which calls the bin\karaf.bat script) will output an error as it exits. This error can be safely ignored. This happens because, on Windows, the bin\karaf.bat script continues to execute even after it has been overwritten by the patch:install command (whereas on Linux or UNIX, the corresponding script process exits immediately).
  10. Open the bin/setenv file (bin\setenv.bat on Windows O/S) in a text editor and check the value of the JAVA_MAX_MEM environment variable, which must be set to at least 1024M. Increase the setting, if necessary.
    Note
    The JBoss Fuse 6.2.1 rollup patch tries to update the JAVA_MAX_MEM setting to the correct value. But if you have already customized the setenv file yourself, the patching mechanism preserves your custom settings. This could result in the JAVA_MAX_MEM environment variable having a value that is too low.
  11. The JBoss Fuse 6.2.1 rollup patch over-writes the contents of the etc/org.ops4j.pax.logging.cfg configuration file (in order fix a security issue). If you previously made any customizations to this file, they will be over-written. If this is the case, edit the file to re-apply your changes.
  12. Restart the container manually, as follows: 
    ./bin/fuse
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    As the container starts up again, the patching mechanism repopulates the container with all of the requisite bundles and features for the patched standalone container. When the Welcome banner appears, it displays the new patch version: 
          _ ____                  ______
     | |  _ \                |  ____|             
     | | |_) | ___  ___ ___  | |__ _   _ ___  ___
 _   | |  _ < / _ \/ __/ __| |  __| | | / __|/ _ \
| |__| | |_) | (_) \__ \__ \ | |  | |_| \__ \  __/
 \____/|____/ \___/|___/___/ |_|   \__,_|___/\___|

  JBoss Fuse (6.2.1.redhat-084)
  http://www.redhat.com/products/jbossenterprisemiddleware/fuse/

Hit '<tab>' for a list of available commands
and '[cmd] --help' for help on a specific command.

Open a browser to http://localhost:8181 to access the management console

Create a new Fabric via 'fabric:create'
or join an existing Fabric via 'fabric:join [someUrls]'

Hit '<ctrl-d>' or 'osgi:shutdown' to shutdown JBoss Fuse.
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    Tip
    If you were invoking the scripts from within the InstallDir/bin directory, you might find that the bin/ directory appears to be empty after the container shuts down. This is because the contents of this directory were re-written by the patch. To see the scripts again, simply re-enter the bin/ directory, for example: cd ..;cd bin.

4.2. Patching a Fabric from 6.2.0 to 6.2.1
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Overview
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The instructions in this section are for upgrading an existing JBoss Fuse 6.2.0 Fabric installation to version 6.2.1.
Warning
Rolling back the patch level from version 6.2.1 to 6.2.0 is not supported in JBoss Fuse Fabric. This is a special case, because the version 6.2.0 Fabric agent does not support the new patching mechanism.

New patching mechanism
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Upgrading from JBoss Fuse 6.2.0 to 6.2.1 requires the new patching mechanism, which is implemented for the first time in 6.2.1. This presents a bootstrapping problem: the existing 6.2.0 installation must be enhanced to support the new patching mechanism before you can install patch version 6.2.1. The upgrade procedure therefore consists of the following distinct phases:
  1. Install the patch management enablement pack for 6.2.0, which replaces the existing patch mechanism with the new patching mechanism. In all other respects, the container remains at version 6.2.0.
  2. Install the 6.2.1 patch in the container using the new patch mechanism and create a new profile version to store the 6.2.1 patched profiles.
  3. Upgrade each of the containers in the fabric to the patched version.

Upgrading different container types
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A typical fabric consists of a variety of different container types. When migrating the fabric from 6.2.0 to 6.2.1, the different container types have to be handled in slightly different ways, as follows:
Root container
The root container is the container where you initially install the patch. The root container plays a key role in the patch process—for example, by acting as a source of patch files for the other containers in the fabric. For this reason, it is recommended that you upgrade this container last of all.
SSH container
There are some special steps required to prepare SSH containers for patching. See the section called “Preparing for a Fabric SSH container upgrade”.
Child container
Because child containers share some files and configuration with their parent container, they can easily get into an inconsistent state during the patching process. The simplest way to deal with child containers is to shut them down and focus on upgrading the parent container initially. After the parent container has been successfully upgraded, you can turn your attention to the child containers.
Note
Child containers cannot be kept at a lower patch version than the root container. They must be upgraded to at least the same patch version as the parent container.
The new patching mechanism keeps track of all the changes that are made as successive patches are installed (in order to be able to roll back the patches, if needed). Hence, the first step performed by the patching mechanism is to scan the existing container installation to discover its initial state (establishing a baseline for subsequent changes introduced by patches). In particular, the patch mechanism scans certain subdirectories of the system/ directory, to discover the initial set of bundles and Maven artifacts available in the installation.
In the case of the JBoss Fuse 6.2.0 distribution (which has not been optimised to work with the new patching mechanism), a problem arises because the core Fabric distribution, fabric8-karaf-1.2.0.redhat-133.zip, is initially not included with the 6.2.0 distribution and is not present in system/. When Fabric requires a copy of this file (for example, for creating a remote SSH container), it has two alternative ways of obtaining it:
  • By downloading the missing core Fabric artifact, fabric8-karaf-1.2.0.redhat-133.zip, from a remote Maven repository.
  • By assembling the fabric8-karaf-1.2.0.redhat-133.zip file on the fly from the contents of the root container.
The differences between these two Fabric archives are minor (for example, different branding in the welcome banner) and both are supported for use in a fabric. If it has already been created or downloaded, the Fabric distribution Zip file will be stored in the following location under system/: 
system/io/fabric8/fabric8-karaf/1.2.0.redhat-133/fabric8-karaf-1.2.0.redhat-133.zip
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For establishing an initial baseline, what counts are the bundles installed in the system/ directory of the root installation (the container you are using to install patches across the fabric). It can happen, however, that an SSH container uses a different version of fabric8-karaf-1.2.0.redhat-133.zip from the one that is installed in the root container. If the Fabric distribution installed in root and the Fabric distribution installed in the SSH container are different, it is impossible to establish a proper baseline for the SSH container and patching of the SSH container will fail.
The patching mechanism has been specially modified to enable a workaround for this problem. Specifically for the fabric8-karaf-1.2.0.redhat-133.zip Maven artifact (and only for this artifact), it is possible to install two different artifact versions under the system/ directory, with the following names: 
system/io/fabric8/fabric8-karaf/1.2.0.redhat-133/fabric8-karaf-1.2.0.redhat-133.zip
system/io/fabric8/fabric8-karaf/1.2.0.redhat-133/fabric8-karaf-1.2.0.redhat-133-custom.zip
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Where one of the file names ends in .zip and the other ends in -custom.zip. It does not matter which file is which. When both of the alternative Fabric distribution files are stored in this way, it becomes possible for the patching mechanism to establish a baseline for either of the Fabric distributions and patching of SSH containers will now work.

Initial system
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The starting point for this patching procedures is assumed to be an installation of Red Hat JBoss Fuse 6.2.0 Full Install (jboss-fuse-full-6.2.0.redhat-133.zip), which is already configured as part of a Fabric (see ).
This can be a container instance that you have customized in various ways, by adding application bundles and features, or even by editing configuration files under the etc/ directory.
Note
The new patching process is usually non-destructive, preserving any customizations made before the patch was applied. If a merge conflict cannot be resolved automatically, however, warning messages will be generated in the log file.

Download the required packages
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To patch JBoss Fuse from 6.2.0 to 6.2.1 you require the following packages:
patch-management-for-fuse-620-6.2.1.redhat-084.zip
Available as the download file, Red Hat JBoss Fuse 6.2.1 on Karaf Update Installer.
jboss-fuse-full-6.2.1.redhat-084.zip
Available as the download file, Red Hat JBoss Fuse 6.2.1 on Karaf Installer.

Preparing for a Fabric SSH container upgrade
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(SSH containers only) Before performing any of the steps to apply the 6.2.1 patch to Fabric, prepare for SSH container upgrades by performing the following steps (for a detailed explanation of why this is necessary, see the section called “Establishing a baseline for an SSH container upgrade”):
  1. In the installation of your root container, look for the following file under the system/ directory: 
    system/io/fabric8/fabric8-karaf/1.2.0.redhat-133/fabric8-karaf-1.2.0.redhat-133.zip
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    Use a file system command to get the exact size of this file in bytes (which provides a simple way of identifying this file).
    Note
    It is possible that there is no fabric8-karaf-1.2.0.redhat-133.zip file located under this directory, which would suggest that you have not used the root container to create any SSH containers.
  2. Look for the fabric8-karaf-1.2.0.redhat-133.zip that is installed with your SSH container (or SSH containers). Use a file system command to get the exact size of this file in bytes. Repeat this for every SSH container instance in your fabric.
  3. Compare the file sizes obtained from the SSH containers with the file size obtained from the root container. If all of the file sizes are the same, this indicates that all of the containers in the Fabric are using exactly the same Fabric distribution—proceed straight to the section called “Applying the 6.2.1 patch to a Fabric container”.
    If any of the file sizes obtained from the SSH containers differ from the file size obtained from the root container, this indicates that at least one of the SSH containers is using a Fabric distribution that is different from the root container's Fabric distribution—proceed to the next step.
  4. Take one of the fabric8-karaf-1.2.0.redhat-133.zip files that is different from the fabric8-karaf-1.2.0.redhat-133.zip file already stored under the root container's system/ directory (where the difference is indicated by having a different file size), rename it to fabric8-karaf-1.2.0.redhat-133-custom.zip, and copy it to the following location under the root container's system/ directory: 
    system/io/fabric8/fabric8-karaf/1.2.0.redhat-133/fabric8-karaf-1.2.0.redhat-133-custom.zip
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    When you are finished, there should be two files located under this directory, as follows: 
    system/io/fabric8/fabric8-karaf/1.2.0.redhat-133/fabric8-karaf-1.2.0.redhat-133.zip
system/io/fabric8/fabric8-karaf/1.2.0.redhat-133/fabric8-karaf-1.2.0.redhat-133-custom.zip
    Copy to Clipboard Toggle word wrap

Applying the 6.2.1 patch to a Fabric container
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To upgrade a JBoss Fuse 6.2.0 Fabric container to version 6.2.1, proceed as follows:
  1. Make a full backup of your JBoss Fuse 6.2.0 installation before attempting to apply the patch.
  2. Install the patch management enablement pack for 6.2.0, patch-management-for-fuse-620-6.2.1.redhat-084.zip, on top of your 6.2.0 installation. Use an archive utility to extract the contents on top of the existing 6.2.0 installation.
    The patch management enablement pack contains the following files: 
    patches/jboss-fuse-full-6.2.0.redhat-133-baseline.zip  
system/io/fabric8/patch/patch-commands/1.2.0.redhat-621084/patch-commands-1.2.0.redhat-621084.jar  
system/io/fabric8/patch/patch-management/1.2.0.redhat-621084/patch-management-1.2.0.redhat-621084.jar  
system/io/fabric8/patch/patch-features/1.2.0.redhat-621084/patch-features-1.2.0.redhat-621084-features.xml  
system/io/fabric8/patch/patch-core/1.2.0.redhat-621084/patch-core-1.2.0.redhat-621084.jar
    Copy to Clipboard Toggle word wrap
    Note
    It does not matter whether the container is running or not when you extract these files.
  3. Start the container, if it is not already running.
  4. Shut down all of the child containers in the fabric using the container-stop command: 
    fabric:container-stop ChildContainerList
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  5. Create a new version for the updated patch mechanism, using the fabric:version-create command: 
    JBossFuse:karaf@root> fabric:version-create 1.0.1
Created version: 1.0.1 as copy of: 1.0
    Copy to Clipboard Toggle word wrap
    Important
    The version name must be a pure numeric string, such as 1.0.1, 1.1, 2.1, or 2.2. You cannot incorporate alphabetic characters in the version name (such as 1.0.patch).
  6. Add the new patch feature repository to version 1.0.1 of the default profile, as follows: 
    fabric:profile-edit --repository mvn:io.fabric8.patch/patch-features/1.2.0.redhat-621084/xml/features default 1.0.1
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  7. Add the patch and patch-core features to version 1.0.1 of the default profile, as follows: 
    fabric:profile-edit --feature patch --feature patch-core default 1.0.1
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  8. Upgrade the root container to version 1.0.1, as follows: 
    fabric:container-upgrade 1.0.1 root
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    The effect of this upgrade is to replace the old patch commands by the new patch commands in the current 6.2.0 Fabric container, thereby bootstrapping the new patch mechanism (which is needed to install the 6.2.1 patch).
  9. Wait until the current container is successfully re-provisioned to version 1.0.1 before proceeding to the next phase of the patch installation. You can monitor the provision status of the current container by entering the following console command: 
    watch container-list
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    When the [provision status] changes to success, you can proceed with the next step.
  10. Add the 6.2.1 patch to the container's environment using the patch:add command (remembering to customize the path to the patch file), as follows: 
    JBossFuse:karaf@root> patch:add file:///path/to/jboss-fuse-full-6.2.1.redhat-084.zip
[name]                           [installed] [description]                   
jboss-fuse-full-6.2.1.redhat-084 false       jboss-fuse-full-6.2.1.redhat-084
    Copy to Clipboard Toggle word wrap
    Note
    In this case, the patch file is the full distribution of JBoss Fuse 6.2.1. Under the new patching mechanism, the full distribution file has a dual purpose: you can extract the archive directly, to create a fresh 6.2.1 distribution; or you can add the file as a patch, in order to migrate an existing 6.2.0 installation to 6.2.1.
  11. Create a new version, using the fabric:version-create command: 
    JBossFuse:karaf@root> fabric:version-create 1.1
Created version: 1.1 as copy of: 1.0.1
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  12. Apply the patch to the new version, 1.1, using the patch:fabric-install command. Note that in order to run this command you must provide the credentials, Username and Password, of a user with Administrator privileges. For example: 
    patch:fabric-install --username Username --password Password --upload --version 1.1 jboss-fuse-full-6.2.1.redhat-084
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  13. Synchronize the patch information across the fabric, to ensure that the profile changes in version 1.1 are propagated to all containers in the fabric (particularly remote SSH containers). Enter the following console command: 
    patch:fabric-synchronize
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  14. Upgrade each existing container in the fabric using the fabric:container-upgrade command (but leaving the root container, where you installed the patch, until last) along with its respective child containers. For example, to upgrade a container named remote and its child, childOfRemote, enter the following command: 
    fabric:container-upgrade 1.1 remote childOfRemote
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    Important
    It is recommended that you initially upgrade only one or two containers to the patched profile version, to ensure that the patch does not introduce any new issues.
    Note
    If the upgraded remote container gives the following error: 
    Provision error:
io.fabric8.common.util.MultiException: Error restarting bundles        at
...
Caused by: org.eclipse.jgit.api.errors.JGitInternalException: Invalid ref name: baseline-ssh-fabric8-1.2.0.redhat-133
...
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    This implies that you omitted to follow the steps required to prepare for upgrading an SSH container—see the section called “Preparing for a Fabric SSH container upgrade”.
  15. Keep checking the provision status of the container you are upgrading until the status appears as requires full restart. Enter the fabric:container-list command to check the status, as follows: 
    fabric:container-list
    Copy to Clipboard Toggle word wrap
    Note
    After the target container has been upgraded to the patch version, the target container requires a full restart. The restart cannot be performed automatically by the patching mechanism, because the auto-restart capability of the patching mechanism will not become available until after the restart.
    Important
    Do not attempt to restart the container you are upgrading until the status appears as requires full restart.
  16. Use one of the standard mechanisms to stop and restart the container manually. In some cases, it will be possible to do this using Fabric commands from the console of the root container.
    For example, you could stop the remote container as follows: 
    fabric:container-stop remote
    Copy to Clipboard Toggle word wrap
    And restart the remote container as follows: 
    fabric:container-start remote
    Copy to Clipboard Toggle word wrap
  17. Wait until the provision status of the container you are upgrading appears as success and then start up its child containers (if any). For example, to restart the childOfRemote container: 
    fabric:container-start childOfRemote
    Copy to Clipboard Toggle word wrap
  18. Upgrade the root container last (that is, the container that you originally installed the patch on) and its children (if any). For example, to upgrade the root container, root, and its child, childOfRoot, enter the following command: 
    fabric:container-upgrade 1.1 root childOfRoot
    Copy to Clipboard Toggle word wrap
  19. Keep checking the provision status of the root container until the status appears as requires full restart. Enter the fabric:container-list command to check the status, as follows: 
    fabric:container-list
    Copy to Clipboard Toggle word wrap
    Important
    Do not attempt to restart the root container until the status appears as requires full restart.
  20. The root container must also be restarted manually. Shut it down using the shutdown console command, as follows: 
    JBossFuse:karaf@root> shutdown
Confirm: shutdown instance root (yes/no): yes
    Copy to Clipboard Toggle word wrap
    Restart the container manually, as follows: 
    ./bin/fuse
    Copy to Clipboard Toggle word wrap
    Tip
    If you were invoking the scripts from within the InstallDir/bin directory, you might find that the bin/ directory appears to be empty after the container shuts down. This is because the contents of this directory were re-written by the patch. To see the scripts again, simply re-enter the bin/ directory, for example: cd ..;cd bin.
  21. Wait until the provision status of the root container appears as success and then start up its child containers (if any). For example, to restart the childOfRoot container: 
    fabric:container-start childOfRoot
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  22. Now set the default profile version to 1.1 (the version that has the 6.2.1 patch applied): 
    fabric:version-set-default 1.1
    Copy to Clipboard Toggle word wrap
    This ensures that when you create new containers from now on, those containers will use the version 1.1 profiles by default (otherwise you would have to specify version 1.1 explicitly in the container create command).
  23. The JBoss Fuse 6.2.1 rollup patch over-writes the properties from the org.ops4j.pax.logging persistent ID (PID) in the karaf profile (in order to fix a security issue). If you previously made any customizations to this logging PID, they will be over-written. If this is the case, edit the karaf profile to re-apply your changes—for example, by invoking the built-in profile text editor in the Karaf console, as follows: 
    profile-edit --pid org.ops4j.pax.logging karaf 1.1
    Copy to Clipboard Toggle word wrap

Rolling back the 6.2.1 patch in a Fabric container
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It is not possible to roll back the 6.2.1 patch in a Fabric container. Specifically, if you applied the 6.2.1 patch as described here, then rolling back from profile version 1.1 to version 1.0.1 (using the fabric:container-rollback command) is guaranteed to fail; and rolling back from profile version 1.1 to version 1.0 is also guaranteed to fail.
Warning
Rolling back the patch level from version 6.2.1 to 6.2.0 is not supported in JBoss Fuse Fabric. This is a special case, because the version 6.2.0 Fabric agent does not support the new patching mechanism.

Chapter 5. Migrate Maven Projects
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Overview
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JBoss Fuse has a JBoss Fuse BOM (Bill of Materials), which defines the versions of all the JBoss Fuse Maven artifacts. You can use the BOM to simplify migration of your Maven POM files. Instead of updating the version elements on each Maven dependency, all you need to do is to import the latest JBoss Fuse BOM, which defines default versions for all of the dependencies provided by JBoss Fuse.

JBoss Fuse BOM
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The JBoss Fuse BOM is a parent POM that defines the versions for all of the Maven artifacts provided by JBoss Fuse. The JBoss Fuse BOM exploits Maven's dependency management mechanism to specify default versions for the Maven artifacts, so that it is no longer necessary to specify the artifact versions explicitly in your POM.

Current version of the JBoss Fuse BOM
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The easiest way to discover the current version of the JBoss Fuse BOM is to examine one of the sample pom.xml files from the quickstarts examples. For example, in the InstallDir/quickstarts/eip/pom.xml file, you can find a line that defines the JBoss Fuse BOM version, as follows: 
<project ...>
    ...
    <properties>
        ...
        <!-- the version of the JBoss Fuse BOM, defining all the dependency versions -->
        <jboss.fuse.bom.version>6.2.1.redhat-084</jboss.fuse.bom.version>
    </properties>
    ...
</project>
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To migrate Maven dependencies using the JBoss Fuse BOM, open the Maven pom.xml file for your project and edit it as follows:
  1. Define the JBoss Fuse BOM version as a property in your pom.xml file, using the current BOM version. For example: 
    <project ...>
    ...
    <properties>
        ...
        <jboss.fuse.bom.version>6.2.1.redhat-084</jboss.fuse.bom.version>
    </properties>
    ...
</project>
    Copy to Clipboard Toggle word wrap
  2. Reference the JBoss Fuse BOM parent POM in a dependencyManagement element, so that it defines default versions for the artifacts provided by JBoss Fuse. Add the following dependencyManagement element to your pom.xml file: 
    <project ...>
    ...
    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>org.jboss.fuse.bom</groupId>
                <artifactId>jboss-fuse-parent</artifactId>
                <version>${jboss.fuse.bom.version}</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
        </dependencies>
    </dependencyManagement>
    ...
</project>
    Copy to Clipboard Toggle word wrap
  3. Now delete all of the version elements in your JBoss Fuse dependencies. All of the versions defined in the JBoss Fuse BOM will be applied automatically to your dependencies (through the Maven dependency management mechanism). For example, if you already had some Apache Camel dependencies, as follows: 
      <dependencies>
    <dependency>
      <groupId>org.apache.camel</groupId>
      <artifactId>camel-core</artifactId>
 <version>2.15.1.redhat-621084</version>
    </dependency>
    <dependency>
      <groupId>org.apache.camel</groupId>
      <artifactId>camel-blueprint</artifactId>
 <version>2.15.1.redhat-621084</version>
    </dependency>
    <dependency>
      <groupId>org.apache.camel</groupId>
      <artifactId>camel-jetty</artifactId>
 <version>2.15.1.redhat-621084</version>
    </dependency>
    ...
  </dependencies>
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    You would delete the version elements, so that the dependencies are specified as follows: 
      <dependencies>
    <dependency>
      <groupId>org.apache.camel</groupId>
      <artifactId>camel-core</artifactId>
    </dependency>
    <dependency>
      <groupId>org.apache.camel</groupId>
      <artifactId>camel-blueprint</artifactId>
    </dependency>
    <dependency>
      <groupId>org.apache.camel</groupId>
      <artifactId>camel-jetty</artifactId>
    </dependency>
    ...
  </dependencies>
    Copy to Clipboard Toggle word wrap
  4. In future, when you migrate to a later version of JBoss Fuse, all that you need to do to upgrade your pom.xml file is to edit the jboss.fuse.bom.version property, so that it references the new version of the JBoss Fuse BOM.

Chapter 6. Migrate Data Store
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Overview
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JBoss Fuse on Apache Karaf uses a KahaDB data store. There is an automatic migration facility that enables the KahaDB data store to be migrated to the new JBoss Fuse version.
The Aries transaction module must be installed and enabled before it can be used. See Fuse Transaction Guide for more details. Ignore the Aries transaction files instructions below if you do not have Aries installed.

Migrate the KahaDB Data Store
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Note
When migrating or patching JBoss Fuse, always back up the KahaDB files and Aries transaction files.
  1. Backup the KhahaDB files and Aries transaction files from the old container. The files can be found at:
    • KahaDB files - InstallDir/data/amq/kahadb/*.*
    • Aries transaction files - InstallDir/data/txlog/*.*
  2. Manually copy all of the KahaDB files from the old container to the same location in the new container.
  3. Manually copy all Aries transaction log files from the same location in the sold container to the new container.
Auto-migration will take place when the new container is started.

Legal Notice
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Trademark Disclaimer

The text of and illustrations in this document are licensed by Red Hat under a Creative Commons Attribution–Share Alike 3.0 Unported license ("CC-BY-SA"). An explanation of CC-BY-SA is available at http://creativecommons.org/licenses/by-sa/3.0/. In accordance with CC-BY-SA, if you distribute this document or an adaptation of it, you must provide the URL for the original version.
Red Hat, as the licensor of this document, waives the right to enforce, and agrees not to assert, Section 4d of CC-BY-SA to the fullest extent permitted by applicable law.
Red Hat, Red Hat Enterprise Linux, the Shadowman logo, JBoss, MetaMatrix, Fedora, the Infinity Logo, and RHCE are trademarks of Red Hat, Inc., registered in the United States and other countries.
Apache, ServiceMix, Camel, CXF, and ActiveMQ are trademarks of Apache Software Foundation. Any other names contained herein may be trademarks of their respective owners.
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