Unable to find plugins in list of available plugins in jenkins

Question

I have installed Jenkins by deploying its WAR file to Tomcat. On typing

http://localhost:8080/jenkins

In browser

Answer 1

My solution is here

If you type in "http://updates.jenkins-ci.org/update-center.json" directory to brower's address bar, (in my case) it actually redirected to "http://ftp.tsukuba.wide.ad.jp/software/jenkins/updates/current/update-center.json."

It worked when I set "http://ftp.tsukuba.wide.ad.jp/software/jenkins/updates/current/update-center.json" to Jenkins' update site, and click "Save" & "Update."

Hope this helps.