What are the options to execute CLI commands at build time in JBoss EAP 7 in OCP images

Solution Verified - Updated

Environment

  • Red Hat Enterprise Application Platform
    • 7.x
    • builder image
  • Red hat OpenShift Container Platform (OCP)
    • 4.x <-- not runtime

Issue

  • What are the options to execute CLI commands at build time in JBoss EAP 7 in OCP images?
  • Build time options for executing CLI commands at build time in JBoss EAP 7 in OCP images

Resolution

The alternatives for CLI command execution on the build seem to be the ones below - depending on the method for building:

MethodApproach
Dockerfile buildCall the jboss-cli at build time in the Dockerfile: RUN $JBOSS_HOME/bin/jboss-cli.sh --file=/tmp/actions.cli <-- docker execution
eap-maven-plugin buildConfigure the eap-maven-plugin in your pom to execute CLI scripts during build.
S2I buildsS2I_IMAGE_SOURCE_MOUNTS this is an extensions env variable, have an extensions directory in the source project, in the extensions directory have a CLI script file (script.cli) and an install.sh script that calls the CLI:

Example Dockerfile build

The below example builds an EAP 7 image with actions.cli, which is passed on the build: 

FROM registry.redhat.io/jboss-eap-7/eap74-openjdk11-openshift-rhel8 as BUILDER

ENV GALLEON_PROVISION_LAYERS=""
ENV GALLEON_PROVISION_DEFAULT_FAT_SERVER=true
ENV CONFIG_IS_FINAL=true

RUN /usr/local/s2i/assemble

COPY lib/actions.cli /tmp/actions.cli
RUN $JBOSS_HOME/bin/jboss-cli.sh --file=/tmp/actions.cli

# From EAP 7.4 runtime image, copy the builder's server & add the war
FROM registry.redhat.io/jboss-eap-7/eap74-openjdk11-runtime-openshift-rhel8 as RUNTIME
USER root
COPY --from=BUILDER --chown=jboss:root $JBOSS_HOME $JBOSS_HOME

RUN chmod -R ug+rwX $JBOSS_HOME

USER jboss
CMD $JBOSS_HOME/bin/openshift-launch.sh

Root Cause

There are alternatives for configuration chagne at runtime and build time. The alternatives for runtime are discussed on What are the options to use a custom runtime JBoss EAP 7 configurations in OCP 4, whereas the build time alternatives are discussed in this article.

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