failed to execute goal org.apache.maven.plugins:maven-gpg-plugin - maven

Question

This error is driving me crazy. Can someone please help me?
I do have gpg installed and it is also in PATH. What is causing this error!!!
Am running this job on jenkins 1.5 , maven 3.0.3 on linux and windows ( both show same error)
[INFO] [ERROR] Failed to execute goal org.apache.maven.plugins:maven-gpg-plugin:1.5:sign (default) on project sample: Exit code: 2 -> [Help 1]
[INFO] [ERROR]
[INFO] [ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[INFO] [ERROR] Re-run Maven using the -X switch to enable full debug logging.
[INFO] [ERROR]
[INFO] [ERROR] For more information about the errors and possible solutions, please read the following articles:
[INFO] [ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoExecutionException
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 4:53.571s
[INFO] Finished at: Fri Aug 14 14:00:36 PDT 2015
[INFO] Final Memory: 21M/620M
[INFO] ------------------------------------------------------------------------
[JENKINS] Archiving /var/lib/jenkins/jobs/sample/workspace/pom.xml to /var/lib/jenkins/jobs/sample/modules/com.sample$sample/builds/2015-08-14_13-55-35/archive/com.sample/sample/1.0.0-SNAPSHOT/sample-1.0.0-SNAPSHOT.pom
Waiting for Jenkins to finish collecting data
mavenExecutionResult exceptions not empty
message : Failed to execute goal org.apache.maven.plugins:maven-release-plugin:2.5:prepare (default-cli) on project sample: Maven execution failed, exit code: '1'
cause : Maven execution failed, exit code: '1'
Stack trace :
org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal org.apache.maven.plugins:maven-release-plugin:2.5:prepare (default-cli) on project sample: Maven execution failed, exit code: '1'
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:217)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:153)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:145)
at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:84)
at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:59)
at org.apache.maven.lifecycle.internal.LifecycleStarter.singleThreadedBuild(LifecycleStarter.java:183)
at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:161)
at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:320)
at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:156)
at org.jvnet.hudson.maven3.launcher.Maven3Launcher.main(Maven3Launcher.java:79)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.codehaus.plexus.classworlds.launcher.Launcher.launchStandard(Launcher.java:329)
at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:239)
at org.jvnet.hudson.maven3.agent.Maven3Main.launch(Maven3Main.java:158)
at hudson.maven.Maven3Builder.call(Maven3Builder.java:100)
at hudson.maven.Maven3Builder.call(Maven3Builder.java:66)
at hudson.remoting.UserRequest.perform(UserRequest.java:118)
at hudson.remoting.UserRequest.perform(UserRequest.java:48)
at hudson.remoting.Request$2.run(Request.java:326)
at hudson.remoting.InterceptingExecutorService$1.call(InterceptingExecutorService.java:72)
at java.util.concurrent.FutureTask.run(FutureTask.java:262)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:745)
Caused by: org.apache.maven.plugin.MojoExecutionException: Maven execution failed, exit code: '1'
at org.apache.maven.plugins.release.PrepareReleaseMojo.prepareRelease(PrepareReleaseMojo.java:281)
at org.apache.maven.plugins.release.PrepareReleaseMojo.execute(PrepareReleaseMojo.java:232)
at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:101)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:209)
... 26 more
Caused by: org.apache.maven.shared.release.ReleaseExecutionException: Maven execution failed, exit code: '1'
at org.apache.maven.shared.release.phase.AbstractRunGoalsPhase.execute(AbstractRunGoalsPhase.java:89)
at org.apache.maven.shared.release.phase.RunPrepareGoalsPhase.execute(RunPrepareGoalsPhase.java:44)
at org.apache.maven.shared.release.DefaultReleaseManager.prepare(DefaultReleaseManager.java:234)
at org.apache.maven.shared.release.DefaultReleaseManager.prepare(DefaultReleaseManager.java:169)
at org.apache.maven.shared.release.DefaultReleaseManager.prepare(DefaultReleaseManager.java:146)
at org.apache.maven.shared.release.DefaultReleaseManager.prepare(DefaultReleaseManager.java:107)
at org.apache.maven.plugins.release.PrepareReleaseMojo.prepareRelease(PrepareReleaseMojo.java:277)
... 29 more
Caused by: org.apache.maven.shared.release.exec.MavenExecutorException: Maven execution failed, exit code: '1'
at org.apache.maven.shared.release.exec.InvokerMavenExecutor.executeGoals(InvokerMavenExecutor.java:394)
at org.apache.maven.shared.release.exec.AbstractMavenExecutor.executeGoals(AbstractMavenExecutor.java:110)
at org.apache.maven.shared.release.phase.AbstractRunGoalsPhase.execute(AbstractRunGoalsPhase.java:81)
... 35 more
channel stopped
Archiving artifacts
An attempt to send an e-mail to empty list of recipients, ignored.
Finished: FAILURE

Answer 1

If you don't need your artifacts to be signed, you may disable or skip the execution of the gpg plugin defined in the parent pom
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>maven-gpg-plugin</artifactId>
<configuration>
<skip>true</skip>
</configuration>
</plugin>
or run the build with gpg.skip=true (see Maven GPG Plugin)
If you need your artifacts to be signed, you should either check the configuration of the gpg-plugin in the parent pom or override the configuration in your pom. Maybe some settings in the parent pom do not match your system's environment, but thats difficult to say from the error message.

Answer 2

The issue happened to me after upgrading from Ubuntu 16 to Ubuntu 18.04 LTS in nightly jenkins build.
gpg --version
gpg (GnuPG) 2.2.4
First i checked the same project in a non jenkins environment with
mvn install
and I got the message
gpg: signing failed: Inappropriate ioctl for device
which pointed me to
https://github.com/keybase/keybase-issues/issues/2798
and
https://tutorials.technology/solved_errors/21-gpg-signing-failed-Inappropriate-ioctl-for-device.html
export GPG_TTY=$(tty)
is the recommended remedy there. I have added this to my .profile and restarted the
mvn install
test. This time i was asked to enter the passphrase for OpenPGP secret key via the terminal. A second run via the command line was successful without entering the key.
I then stopped and restarted jenkins and tried the failing job again. This time it worked.
Unfortunately it still does not work in jenkins jobx where an xsession is started.
http://maven.apache.org/plugins/maven-gpg-plugin/usage.html
explictly states that you can put the gpg.passphrase in a settings.xml which I have been using effectively for a long time. Know i do not know how do get this behavior back I only can offer the workaround above.
See also
Avoid gpg signing prompt when using Maven release plugin

Answer 3

This means that you need to have a key to sign the jars. Just follow this process until the last step (you dont need to copy it to github oviously)
Here a summary:
Open Git Bash
gpg --gen-key #use defaults with 4096 as key size
gpg --list-secret-keys --keyid-format LONG
(optional) gpg --armor --export %the key from above%