英文:
How to set JAVA_HOME in Jenkins for a linux based system?
问题
我的默认Java位于以下位置-
admin@pc1:~$ readlink -f $(which java)
/usr/lib/jvm/java-11-openjdk-amd64/bin/java
因此，我在Jenkins全局工具配置中将上述目录（即/usr/lib/jvm/java-11-openjdk-amd64/bin/java）设置为JAVA_HOME，但是它显示以下消息-
> /usr/lib/jvm/java-11-openjdk-amd64/bin/java 不是Jenkins主服务器上的目录（但在某些代理上可能存在）
所以我移除了 /bin/java 部分，并粘贴了以下 /usr/lib/jvm/java-11-openjdk-amd64 但是，它仍然显示相同的消息。
之前没有将$JAVA_HOME设置为我的电脑，所以我通过终端将$JAVA_HOME设置为 /usr/lib/jvm/java-11-openjdk-amd64；然后我再次尝试在Jenkins中设置JAVA_HOME，但是它仍然显示相同的消息。
是什么原因呢？
英文:
My default java is located in the following location-
admin@pc1:~$ readlink -f $(which java)
/usr/lib/jvm/java-11-openjdk-amd64/bin/java
So,I set the above directory (ie./usr/lib/jvm/java-11-openjdk-amd64/bin/java) as the JAVA_HOME in the Jenkins-Global Tool Configuration but, it's showing the following message-
> /usr/lib/jvm/java-11-openjdk-amd64/bin/java is not a directory on the
> Jenkins master (but perhaps it exists on some agents)
So I removed the /bin/java -portion and pasted the following /usr/lib/jvm/java-11-openjdk-amd64but, it still showing the same message.
$JAVA_HOME was not previously set to my pc,So I set the $JAVA_HOME to /usr/lib/jvm/java-11-openjdk-amd64 through terminal;then I again tried to set the JAVA_HOME in Jenkins, but, it's still showing the same message.
What is the reason?
答案1
得分: 0
你是否使用与管理员不同的用户来启动Jenkins？如果是这样的话，您需要检查该用户是否也设置了java_home。对于我的情况，我正在使用root用户启动Jenkins，并且为root用户设置了java_home，它可以正常工作。还有一个要检查的地方就是Jenkins配置文件。可能的位置是大多数Linux操作系统的/etc/default或/etc/sysconfig/jenkins。在这里，您可以指定环境变量来设置JAVA_HOME。请参考此网址以供参考：https://support.cloudbees.com/hc/en-us/articles/209715698-How-to-add-Java-arguments-to-Jenkins-
JAVA_HOME应该设置为类似于/usr/lib/jvm/java-6-openjdk的路径。
英文:
Are you using any separate user than admin to start Jenkins? In that case, you need to check if java_home is set for that user also? For my case, I am using root user to start jenkins an java home is set for root user and it works fine.One more place to check that is Jenkins configuration file . Possible location is /etc/default or /etc/sysconfig/jenkins for most of the Linux OS. Here, you can specify env variable to set JAVA_HOME. Please refer this url for reference :https://support.cloudbees.com/hc/en-us/articles/209715698-How-to-add-Java-arguments-to-Jenkins-
JAVA_HOME should be set like /usr/lib/jvm/java-6-openjdk ....
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