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Update a Tomcat Installation from 7.20 to 7.21

The following steps describe how to update the Camunda artifacts on a Tomcat server in a shared process engine setting.

Throughout the procedure, refer to the update guide. If not already done, download the Camunda 7.21 Tomcat distribution.

The update procedure takes the following steps:

  1. Update the Camunda 7 core libraries.
  2. Update optional Camunda 7 libraries.
  3. Update web applications.

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

1. Update the Camunda 7 core libraries

Replace the following libraries in the folder $TOMCAT_HOME/lib/ with the 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-engine-feel-scala-$PLATFORM_VERSION.jar
  • camunda-juel-$PLATFORM_VERSION.jar
  • camunda-commons-logging-$COMMONS_VERSION.jar
  • camunda-commons-typed-values-$PLATFORM_VERSION.jar
  • camunda-commons-utils-$COMMONS_VERSION.jar
  • camunda-connect-connectors-all-$CONNECT_VERSION.jar
  • camunda-connect-core-$CONNECT_VERSION.jar
  • camunda-template-engines-freemarker-$TEMPLATE_ENGINES_VERSION.jar
  • feel-engine-$FEEL_ENGINE_VERSION-scala-shaded.jar
  • freemarker-$FREEMARKER_VERSION.jar
  • mybatis-$MYBATIS_VERSION.jar

2. Update optional Camunda 7 libraries

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

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

  • 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

GraalVM JavaScript

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

  • graal-sdk-21.1.0.jar
  • icu4j-68.2.jar
  • js-21.1.0.jar
  • js-scriptengine-21.1.0.jar
  • regex-21.1.0.jar
  • truffle-api-21.1.0.jar

Groovy

The following libraries replace the single groovy-all-$GROOVY_VERSION.jar library. Copy these libraries from $TOMCAT_DISTRIBUTION/lib to the folder $TOMCAT_HOME/lib/, if present:

  • groovy-$GROOVY_VERSION.jar
  • groovy-jsr223-$GROOVY_VERSION.jar
  • groovy-json-$GROOVY_VERSION.jar
  • groovy-xml-$GROOVY_VERSION.jar
  • groovy-templates-$GROOVY_VERSION.jar

3. Update web applications

Update REST API

The following steps are required to update 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.

Update Cockpit, Tasklist, and Admin

The following steps are required to update 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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