Issue in Jenkins installation plugins

Question

I am facing issue while installing any of the Jenkins plugins suggested.

Actually after downloading,Jenkins.war file(which is latest 2.141) when i tried to execute the jar with java -jar jenkins.war so it gave me an error of Jenkins require java 8 but you are using 10. Also,it says that java class version 54.0 is running,but it requires java 52.0.

But I was able to resolve this issue by setting --enable-future-java flag .

java -jar jenkins.war --enable-future-java flag

Now,after writing this command,jenkins is up and running but i am unable to install the plugins. Also,im cmd prompt after the Jenkins is upa d running.There is one error also. PFB :-

Sep 17, 2018 4:38:49 PM hudson.WebAppMain$3 run
INFO: Jenkins is fully up and running
[31mSep 17, 2018 4:39:02 PM hudson.model.UpdateSite updateData
SEVERE: ERROR: SHA-512 based signature in the update center doesn't match with the certificate in 'update site 'default''
[0mSep 17, 2018 4:39:02 PM hudson.model.AsyncPeriodicWork$1 run
INFO: Finished Download metadata. 15,407 ms

Answer 1

You need to add a flag which allows starting Jenkins with unsupported Java versions. You can do some google research on this.

Answer 2

如果我们将Jenkins war文件的版本从2.141更改为2.814，则它适用于Java 10，并且可以很好地安装Jenkins的插件