On Wed, Nov 13, 2019 at 6:30 AM Herrn, Marco <marco.he...@siemens.com>
wrote:
> Hello Mark,
>
>
>
> yes, it is running on the master. We only have a master to don’t run any
> agents.
>
>
>
> You write:
>
> *Fix the environment in the script that launches the Jenkins master so
> that it uses the JDK you want instead of the JRE it is actually using now.
> That may require that you change the value of PATH. It may require that
> you define JAVA_HOME. In either case, Jenkins in your environment needs to
> run with a JDK, not a JRE. It is currently running with a JRE.*
>
>
>
> As the system information displays a totally different `java.home` than
> the failing maven report, It don’t think that settings are related.
>
>
>
> Anyway I tried setting and exporting the $JAVA_HOME directly in the
> Jenkins start script and in the global environment variables in Jenkins
> settings. `java.home` does change then, but still appends “jre”. But the
> actual $JAVA_HOME environment variable is also set and points to
> “/opt/jdk8” as I have set it.
>
>
> However the problem persists. It is obviously respecting my JAVA_HOME,
> since it is using it for the maven build, but it insists on appending /jre.
>
>
>
> How can I get rid of that?
>
>
>
I don't know. None of the environments that I maintain have that problem.
I installed on Debian 9 using the Debian installer, on Windows 10 using
jenkins.war, and in a Docker image. I don't have any other suggestions to
offer.
> That problem didn’t exist with Jenkins 1 as this build worked correctly in
> it.
>
>
>
> BR
>
> Marco
>
>
>
> *Von:* jenkinsci-users@googlegroups.com <jenkinsci-users@googlegroups.com>
> *Im Auftrag von *Mark Waite
> *Gesendet:* Mittwoch, 13. November 2019 01:32
> *An:* Jenkins Users <jenkinsci-users@googlegroups.com>
> *Betreff:* Re: How to force jenkins to use $JAVA_HOME/ instead of
> $JAVA_HOME/jre?
>
>
>
>
>
>
>
> On Tue, Nov 12, 2019 at 12:59 AM Herrn, Marco <marco.he...@siemens.com>
> wrote:
>
> Hello Mark,
>
>
>
> in the Jenkins System Information page I see the
>
>
>
> “java.home” set to
> “/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.191.b12-1.el7_6.x86_64/jre”
>
>
>
>
>
> I believe that report of the value of java.home is reporting the JRE you
> are using to run the Jenkins master. Whatever technique is being used to
> run Jenkins is
> choosing
> /usr/lib/jvm/java-1.8.0-openjdk-1.8.0.191.b12-1.el7_6.x86_64/jre/bin/java
> as the Java which should run Jenkins.
>
>
>
> Based on your report that maven is failing with a message about the wrong
> java, I assume that the maven job which is failing is using an executor on
> the Jenkins master. Can you confirm that the failure happened when the job
> ran on an executor on the Jenkins master?
>
>
>
> If the failure is happening when the job runs on an executor on the
> master, then you have a few choices. You could:
>
> - Fix the environment in the script that launches the Jenkins master
> so that it uses the JDK you want instead of the JRE it is actually using
> now. That may require that you change the value of PATH. It may require
> that you define JAVA_HOME. In either case, Jenkins in your environment
> needs to run with a JDK, not a JRE. It is currently running with a JRE.
> - Create a Jenkins agent configured to use the desired JDK and run the
> build on the Jenkins agent
>
> Mark Waite
>
>
>
> which is yet another JVM installation.
>
>
>
> There is no additional “JAVA_HOME” environment variable.
>
>
>
> I am not really sure what you mean by
>
>
>
> “If you've defined a JDK tool (or an AdoptOpenJDK tool), is there a
> JAVA_HOME defined in the context of that JDK tool?
>
>
>
> If you've defined a maven tool, is there a JAVA_HOME defined in the
> context of that maven tool?”
>
>
>
> I have defined my JDKs in the Configuration of Helpers and specified the
> JAVA_HOME for each one:
>
>
>
>
>
> There is no such settings for the maven installation and I am not able to
> specify one:
>
>
>
>
>
>
>
> BR
>
>
> Marco
>
>
>
> *Von:* jenkinsci-users@googlegroups.com <jenkinsci-users@googlegroups.com>
> *Im Auftrag von *Mark Waite
> *Gesendet:* Montag, 11. November 2019 17:15
> *An:* Jenkins Users <jenkinsci-users@googlegroups.com>
> *Betreff:* Re: How to force jenkins to use $JAVA_HOME/ instead of
> $JAVA_HOME/jre?
>
>
>
> Is there a JAVA_HOME environment variable reported in the Jenkins System
> Information page ("Jenkins" -> "Manage Jenkins" -> "System Information")?
>
>
>
> If you've defined a JDK tool (or an AdoptOpenJDK tool), is there a
> JAVA_HOME defined in the context of that JDK tool?
>
>
>
> If you've defined a maven tool, is there a JAVA_HOME defined in the
> context of that maven tool?
>
>
>
> On Mon, Nov 11, 2019 at 8:57 AM Herrn, Marco <marco.he...@siemens.com>
> wrote:
>
> Hello,
>
>
>
>
>
> I have a Jenkins 2.190.2 running.
>
>
>
> I specified a custom JDK with “JAVA_HOME” set to `/opt/jdk8` which itself
> is a symbolic link to `/opt/oracle_jdk1.8.0_191`.
>
>
>
> Some of my maven builds are now breaking due to the javadoc executable not
> being found:
>
>
>
>
>
> [ERROR] Failed to execute goal
> org.apache.maven.plugins:maven-javadoc-plugin:3.1.1:jar (default-cli) on
> project XXX: MavenReportException: Error while generating Javadoc: Unable
> to find Javadoc command: The Javadoc executable
> ‘/opt/oracle_jdk1.8.0_191/jre/bin/javadoc’ doesn’t exist or is not a file.
> Verify the <javadocExecutable/> parameter.
>
>
>
>
>
> Of course `Javadoc` cannot be found when searching in $JAVA_HOME/jre.
>
> Why is Jenkins referring to the jre subdirectory? When calling maven with
> the -X parameter I see that jenkins actually calls maven with
> `/opt/jdk8/bin/java`, but then sets the Java home to
> `/opt/oracle_jdk1.8.0_191/jre`:
>
>
>
>
>
> [XXX] $ /opt/jdk8/bin/java -cp
> /home/Jenkins/plugins/maven-plugin/WEB-INF/lib/maven35-agent-1.13.jar:….
>
> …
>
> Java version: 1.8.0_191, vendor: Oracle Corporation, runtime:
> /opt/oracle_jdk1.8.0_191/jre
>
>
>
>
>
> I know that I could forcibly set the `<javadocExecutable/>` parameter to
> `${java.home}../bin/javadoc`, but that would be wrong, since $JAVA_HOME is
> /opt/jdk8, not /opt/jdk8/jre and it would break the build for all other
> cases than Jenkins.
>
>
>
> So how can I force Jenkins to use the correct $JAVA_HOME for building?
>
>
>
> BR
>
> Marco
>
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> --
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> Thanks!
>
> Mark Waite
>
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> Thanks!
>
> Mark Waite
>
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Thanks!
Mark Waite
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