Maven build using offline repository fails with dependency error in offline environment.

1. Before starting. Setup maven repository cache. $ cd ~/.m2 $ mv repository repository.bak $ mv settings.xml settings.xml.bak $ cp settings.xml ~/.m2 # Use settings.xml in Attachments. Extract rhdm7-helloworld in Attachments. $ cd /workdir $ unzip rhdm7-helloworld.zip 2. Create offline repository. Download and use offliner-1.7.jar of [2]. Create offline repository by following Procedure 1. and 2. in [1]. $ mkdir -p /workdir/offline/repository $ java -jar offliner-1.7.jar -r https://maven.repository.redhat.com/ga/ -r https://repo1.maven.org/maven2/ -d /workdir/offline/repository rhdm-7.6.0-offliner.txt $ cd /workdir/rhdm7-helloworld $ mvn clean install $ mvn -e -DskipTests dependency:go-offline -f /workdir/rhdm7-helloworld/pom.xml --batch-mode -Djava.net.preferIPv4Stack=true $ cd /workdir/offline $ (cd ~/.m2; tar cf - repository) | tar xvf - $ mv ~/.m2/repository ~/.m2/repository.bak2 3. Use /workdir/offline/repository as your offline repository. Modify ~/.m2/settings.xml. (from) <activeProfiles> <!-- offline repository --> <!-- <activeProfile>offline-repository</activeProfile> --> <!-- online repository --> <activeProfile>jboss-enterprise-maven-repository</activeProfile> <activeProfile>maven-central-repository</activeProfile> </activeProfiles> (to) <activeProfiles> <!-- offline repository --> <activeProfile>offline-repository</activeProfile> <!-- online repository --> <!-- <activeProfile>jboss-enterprise-maven-repository</activeProfile> --> <!-- <activeProfile>maven-central-repository</activeProfile> --> </activeProfiles> 4. Build rhdm7-helloworld under offline environment. Turn off your network environment. Build rhdm7-helloworld. $ cd /workdir/rhdm7-helloworld $ mvn clean install --> The following dependency error occurs. [ERROR] Failed to execute goal on project rhdm7-helloworld: Could not resolve dependencies for project com.example:rhdm7-helloworld:war:0.0.1: Failed to collect dependencies at org.kie:kie-ci:jar:7.30.0.Final-redhat-00003 -> org.kie.soup:kie-soup-maven-integration:jar:7.30.0.Final-redhat-00003 -> org.eclipse.sisu:org.eclipse.sisu.plexus:jar:0.3.2.redhat-00002 -> org.codehaus.plexus:plexus-utils:jar:3.0.17.redhat-00001: Failed to read artifact descriptor for org.codehaus.plexus:plexus-utils:jar:3.0.17.redhat-00001: Could not transfer artifact org.codehaus.plexus:plexus-utils:pom:3.0.17.redhat-00001 from/to central (https://repo.maven.apache.org/maven2): Transfer failed for https://repo.maven.apache.org/maven2/org/codehaus/plexus/plexus-utils/3.0.17.redhat-00001/plexus-utils-3.0.17.redhat-00001.pom: Unknown host repo.maven.apache.org: Name or service not known -> [Help 1] Possible Workaround: Modify /workdir/offline/repository/org/eclipse/sisu/org.eclipse.sisu.plexus/0.3.2.redhat-00002/org.eclipse.sisu.plexus-0.3.2.redhat-00002.pom . (from) <dependency> <groupId>org.codehaus.plexus</groupId> <artifactId>plexus-utils</artifactId> <version>3.0.17.redhat-00001</version> </dependency> (to) <dependency> <groupId>org.codehaus.plexus</groupId> <artifactId>plexus-utils</artifactId> <version>3.0.22</version> </dependency> [1] Red Hat Decision Manager > 7.6 > Installing and configuring Red Hat Decision Manager on Red Hat JBoss EAP 7.2 > Chapter 12. Maven settings and repositories for Red Hat Decision Manager - 12.3. Preparing a Maven mirror repository for offline use https://access.redhat.com/documentation/en-us/red_hat_decision_manager/7.6/html/installing_and_configuring_red_hat_decision_manager_on_red_hat_jboss_eap_7.2/maven-repo-using-con#offline-repo-proc [2] Offliner tool 1.7 https://repo.maven.apache.org/maven2/com/redhat/red/offliner/offliner/1.7/offliner-1.7.jar