Upgrade a JBoss/Wildfly Installation from 7.5 to 7.6

The following steps describe how to upgrade the Camunda artifacts on a JBoss AS 7, Wildfly 8 and Wildfly 10 server in a shared process engine scenario. For the entire procedure, refer to the upgrade guide. If not already done, make sure to download the Camunda BPM 7.6 JBoss distribution, Camunda BPM 7.6 Wildfly 8 or Camunda BPM 7.6 Wildfly 10 distribution. In the following instructions $APP_SERVER should be replaced with either jboss or wildfly, depending on the used application server.

The upgrade procedure takes the following steps:

  1. Upgrade the Camunda BPM Modules
  2. Upgrade Optional Camunda BPM Modules
  3. Upgrade Camunda Web Applications

Whenever the instructions are to replace a module, make sure to delete the previous version of the module first to avoid orphan jars.

Upgraded Wildfly Version

The pre-built Camunda 7.6 distribution ships with Wildfly 8, alternatively with Wildfly 10. In particular, Camunda 7.6 is supported on Wildfly 8.2 and 10.1 such that a Wildfly upgrade is not required when migrating from 7.5 to 7.6.

See the Wildfly migration guide for any Wildfly-specific migration notes and procedures.

1. Upgrade the Camunda BPM Modules

Replace the following modules from the folder $APP_SERVER_HOME/modules/ with their new versions from the folder $APP_SERVER_DISTRIBUTION/modules/:

  • org/camunda/bpm/camunda-engine
  • org/camunda/bpm/$APP_SERVER/camunda-$APP_SERVER-subsystem
  • org/camunda/bpm/model/camunda-bpmn-model
  • org/camunda/bpm/model/camunda-cmmn-model
  • org/camunda/bpm/model/camunda-dmn-model
  • org/camunda/bpm/model/camunda-xml-model
  • org/camunda/bpm/dmn/camunda-engine-dmn
  • org/camunda/bpm/dmn/camunda-engine-feel-api
  • org/camunda/bpm/dmn/camunda-engine-feel-juel
  • org/camunda/commons/camunda-commons-logging
  • org/camunda/commons/camunda-commons-typed-values
  • org/camunda/commons/camunda-commons-utils

2. Upgrade Optional Camunda BPM Modules

In addition to the core modules, there may be optional artifacts in $APP_SERVER_HOME/modules/ for LDAP integration, Camunda Connect, Camunda Spin, and Groovy scripting. If you use any of these extensions, the following upgrade steps apply:

LDAP Integration

Replace the following module from the folder $APP_SERVER_HOME/modules/ with its new version from the folder $APP_SERVER_DISTRIBUTION/modules/, if present:

  • org/camunda/bpm/identity/camunda-identity-ldap

Camunda Connect

Replace the following modules from the folder $APP_SERVER_HOME/modules/ with their new versions from the folder $APP_SERVER_DISTRIBUTION/modules/, if present:

  • org/camunda/connect/camunda-connect-core
  • org/camunda/connect/camunda-connect-http
  • org/camunda/connect/camunda-connect-soap-http
  • org/camunda/bpm/camunda-engine-plugin-connect

Camunda Spin

Replace the following modules from the folder $APP_SERVER_HOME/modules/ with their new versions from the folder $APP_SERVER_DISTRIBUTION/modules/, if present:

  • org/camunda/spin/camunda-spin-core
  • org/camunda/spin/camunda-spin-dataformat-json-jackson
  • org/camunda/spin/camunda-spin-dataformat-xml-dom
  • org/camunda/bpm/camunda-engine-plugin-spin

Additionally, also replace the following dependent modules:

  • com/fasterxml/jackson/core/jackson-annotations
  • com/fasterxml/jackson/core/jackson-core
  • com/fasterxml/jackson/core/jackson-databind

Groovy Scripting

Replace the following module from the folder $APP_SERVER_HOME/modules/ with its new version from the folder $APP_SERVER_DISTRIBUTION/modules/ if present:

  • org/codehaus/groovy/groovy-all

3. Upgrade Camunda Web Applications

Upgrade REST API

The following steps are required to upgrade the Camunda REST API on a JBoss/Wildfly instance:

  1. Undeploy an existing web application with a name like camunda-engine-rest
  2. Download the REST API web application archive from our Maven Nexus Server. Alternatively, switch to the private repository for the enterprise version (credentials from license required). Choose the correct version named $PLATFORM_VERSION/camunda-engine-rest-$PLATFORM_VERSION.war.
  3. Deploy the web application archive to your JBoss/Wildfly instance.

Upgrade Cockpit, Tasklist, and Admin

The following steps are required to upgrade the Camunda web applications Cockpit, Tasklist, and Admin on a JBoss/Wildfly instance:

  1. Undeploy an existing web application with a name like camunda-webapp
  2. Download the Camunda web application archive from our Maven Nexus Server. Alternatively, switch to the private repository for the enterprise version (credentials from license required). Choose the correct version named $PLATFORM_VERSION/camunda-webapp-jboss.war.
  3. Deploy the web application archive to your JBoss/Wildfly instance.

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