Upgrade a Tomcat Installation from 7.5 to 7.6

The following steps describe how to upgrade the Camunda artifacts on a Tomcat server in a shared process engine setting. For the entire procedure, refer to the upgrade guide. If not already done, make sure to download the Camunda BPM 7.6 Tomcat distribution.

The upgrade procedure takes the following steps:

  1. Upgrade the Camunda BPM Core Libraries
  2. Upgrade Optional Camunda BPM Libraries
  3. Maintain Process Applications
  4. Upgrade Web Applications

In each of the following steps, the identifier $*_VERSION refers to the current versions and the new versions of the artifacts.

1. Upgrade the Camunda BPM Core Libraries

Replace the following libraries in the folder $TOMCAT_HOME/lib/ with their new versions from the folder $TOMCAT_DISTRIBUTION/lib/:

  • camunda-engine-$PLATFORM_VERSION.jar
  • camunda-bpmn-model-$PLATFORM_VERSION.jar
  • camunda-cmmn-model-$PLATFORM_VERSION.jar
  • camunda-dmn-model-$PLATFORM_VERSION.jar
  • camunda-xml-model-$PLATFORM_VERSION.jar
  • camunda-engine-dmn-$PLATFORM_VERSION.jar
  • camunda-engine-feel-api-$PLATFORM_VERSION.jar
  • camunda-engine-feel-juel-$PLATFORM_VERSION.jar
  • camunda-commons-logging-$COMMONS_VERSION.jar
  • camunda-commons-typed-values-$COMMONS_VERSION.jar
  • camunda-commons-utils-$COMMONS_VERSION.jar

2. Upgrade Optional Camunda BPM Libraries

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

LDAP Integration

Copy the following library from $TOMCAT_DISTRIBUTION/lib to the folder $TOMCAT_HOME/lib/, if present:

  • camunda-identity-ldap-$PLATFORM_VERSION.jar

Camunda Connect

Copy the following libraries from $TOMCAT_DISTRIBUTION/lib to the folder $TOMCAT_HOME/lib/, if present:

  • camunda-connect-connectors-all-$CONNECT_VERSION.jar
  • camunda-connect-core-$CONNECT_VERSION.jar
  • camunda-engine-plugin-connect-$PLATFORM_VERSION.jar

Camunda Spin

Copy the following libraries from $TOMCAT_DISTRIBUTION/lib to the folder $TOMCAT_HOME/lib/, if present:

  • camunda-spin-dataformat-all-$SPIN_VERSION.jar
  • camunda-spin-core-$SPIN_VERSION.jar
  • camunda-engine-plugin-spin-$PLATFORM_VERSION.jar

Groovy Scripting

Copy the following library from $TOMCAT_DISTRIBUTION/lib to the folder $TOMCAT_HOME/lib/, if present:

  • groovy-all-$GROOVY_VERSION.jar

3. Upgrade Web Applications

Upgrade REST API

The following steps are required to upgrade the Camunda REST API on a Tomcat 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-tomcat.war.
  3. Deploy the web application archive to your Tomcat instance.

Upgrade Cockpit, Tasklist, and Admin

The following steps are required to upgrade the Camunda web applications Cockpit, Tasklist, and Admin on a Tomcat 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 $PLATFORM_VERSION/camunda-webapp-tomcat-$PLATFORM_VERSION.war.
  3. Deploy the web application archive to your Tomcat instance.

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