Can We Change Setting In Jenkins As It Picks Desire Version Of Java.

Jenkins

Posted on December 7, 2017February 27, 2021 | by scmgalaxy K

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Namit created the topic: Can we change setting in Jenkins as it picks desire version of Java.
In my Linux server i do have two version of Java (Java 1.6 and Java 1.8), few applications which are running on this server is using Java 1.6, so i cann’t change this setting but i want when i start jenkins service it should pick java 1.8 instead of java 1.6 as for jenkins Java 7 or more is require. Is there any way to fix this problem.

[root@rpc1372 run]# ls -l /usr/bin/java
lrwxrwxrwx 1 root root 30 Jun 15 2014 /usr/bin/java -> /usr/java/jdk1.6.0_19/bin/java

[root@rpc1372 run]# java -version
java version “1.6.0_19”
Java(TM) SE Runtime Environment (build 1.6.0_19-b04)
Java HotSpot(TM) Client VM (build 16.2-b04, mixed mode, sharing)

rajeshkumar replied the topic: Can we change setting in Jenkins as it picks desire version of Java.
There are basically 2 way –
Method 1: Modify the “jenkins” file under /etc/init.d

[root@chef-server init.d]# pwd /etc/init.d [root@chef-server init.d]# more jenkins | grep -i java # Search usable Java. We do this because various reports indicated # that /usr/bin/java may not always point to Java >= 1.6 /etc/alternatives/java /usr/lib/jvm/java-1.6.0/bin/java /usr/lib/jvm/jre-1.6.0/bin/java /usr/lib/jvm/java-1.7.0/bin/java /usr/lib/jvm/jre-1.7.0/bin/java /usr/lib/jvm/java-1.8.0/bin/java /usr/lib/jvm/jre-1.8.0/bin/java /usr/bin/java [ -x "$JENKINS_JAVA_CMD" ] && break JENKINS_JAVA_CMD="$candidate" JAVA_CMD="$JENKINS_JAVA_CMD $JENKINS_JAVA_OPTIONS -DJENKINS_HOME=$JENKINS_HOME -jar $JENKINS_WAR" daemon --user "$JENKINS_USER" --pidfile "$JENKINS_PID_FILE" $JAVA_CMD $PARAMS > /dev/null