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

you have to come out of your employer network. Also, check if any of your browser settings are restricted to avoid looking for jenkins for plugins and updates.

Answer 2

For me the following worked:

Go to Manage Jenkins->Configure Global Security

Click the checkbox for "Use browser for metadata download"

I also have security disabled and prevent cross site forgery unchecked.

Answer 3

The reason why I could not find a plugin that i searched for in Jenkins->Manage plugins->Available:

It had already been installed and it was in Jenkins->Manage plugins->Installed.

Answer 4

I had this issue when using nginx as a secure reverse proxy. I needed to update the url from which to download the updates list, as suggested above, only with https to prevent mixed content errors in chrome.

Answer 5

The problem may be that your browser proxy settings are not configured properly.

Jenkins doesn't retrieve the plugin list directly from the update center, it tells your browser to retrieve it and post it back to Jenkins. So the HTTP proxy settings within Jenkins are ignored for this step.

So if you are using a browser that is configured to only work within your network, to connect to local servers such as a Jenkins instance, then you won't be able to update the plugin list.

(This just happened to me and took a frustrating hour to work out.)

Answer 6

I had an issue with NginX proxy requests to Jenkins. I had error:

Nginx 413 Request Entity Too Large

I was able to fix that by adding

client_max_body_size 2M;

to the /etc/nginx/nginx.conf file. After that I went to Jenkins - Plugin Manager - Advanced tab and press Check Now button