Unable to Download Update-Center.json for Jenkins LTS 2.479.2

[vsrucha]

Service(s)

Update center

Summary

I’m upgrading Jenkins from 2.426.3 to the latest LTS version (2.479.2). While attempting to download plugins, I faced a 404 error for the following URL: updates.jenkins.io/dynamic-stable-2.479.2/update-center.json
After investigation, I found that this URL is not indexed in: mirrors.jenkins.io/updates/

Steps taken so far:

Verified the redirected URL and confirmed that the update-center.json file is missing.
Checked the Jenkins mirrors but couldn’t find the dynamic update file for 2.479.2.

Reproduction steps

Step 1 curl -I https://mirrors.updates.jenkins.io/dynamic-stable-2.479.2/update-center.json

This url is returning 404

[dduportal]

Hi @vsrucha , where do you get these URLs from?

I'm asking because none of the provided URLs are valid or expected to work.

[dduportal]

• First of all, mirrors.jenkins.io/updates/ is and alias for the get.jenkins.io download service which is only expected to be used for binary files (plugins for instance). It is unrelated to the Update Center.
• Second, you are expected to access the Update Center through the updates.jenkins.io hostname. If you do not, there are NO guarantee about the behavior. The mirrors.updates.jenkins.io is a platform implementation detail which may change at any moment.
• Third: you are not expected to consume directly the /dynamic-xxxx-yyyy endpoints. These endpoints are platform implementation details which may change at any moment.

Jenkins controllers and the jenkins-plugin-cli are using a query string instead, and then follow redirections to reach the file to download: https://updates.jenkins.io/update-center.json?version=2.479.2.

If you cannot use this URL, please describe your use case below.

[dduportal]

Any news @vsrucha ?

[vsrucha]

Hello @dduportal ,

I am upgrading Jenkins to latest LTS and while attempting to download plugins, I am facing issues. I will provide logs for your reference. Please let me know.

Logs:

https://updates.jenkins.io/dynamic-stable-2.479.2/update-center.json
Resolving updates.jenkins.io (updates.jenkins.io)... 20.7.178.24, 2603:1030:408:5::15a
Connecting to updates.jenkins.io (updates.jenkins.io)|20.7.178.24|:443... connected.
HTTP request sent, awaiting response... 307 Temporary Redirect
Location: https://mirrors.updates.jenkins.io/dynamic-stable-2.479.2/update-center.json [following]
--2024-12-23 05:13:30-- https://mirrors.updates.jenkins.io/dynamic-stable-2.479.2/update-center.json
Resolving mirrors.updates.jenkins.io (mirrors.updates.jenkins.io)... 20.7.178.24, 2603:1030:408:5::15a
Connecting to mirrors.updates.jenkins.io (mirrors.updates.jenkins.io)|20.7.178.24|:443... connected.
HTTP request sent, awaiting response... 404 Not Found
2024-12-23 05:13:31 ERROR 404: Not Found.

[dduportal]

Hello @dduportal ,

I am upgrading Jenkins to latest LTS and while attempting to download plugins, I am facing issues. I will provide logs for your reference. Please let me know.

Logs:

https://updates.jenkins.io/dynamic-stable-2.479.2/update-center.json Resolving updates.jenkins.io (updates.jenkins.io)... 20.7.178.24, 2603:1030:408:5::15a Connecting to updates.jenkins.io (updates.jenkins.io)|20.7.178.24|:443... connected. HTTP request sent, awaiting response... 307 Temporary Redirect Location: https://mirrors.updates.jenkins.io/dynamic-stable-2.479.2/update-center.json [following] --2024-12-23 05:13:30-- https://mirrors.updates.jenkins.io/dynamic-stable-2.479.2/update-center.json Resolving mirrors.updates.jenkins.io (mirrors.updates.jenkins.io)... 20.7.178.24, 2603:1030:408:5::15a Connecting to mirrors.updates.jenkins.io (mirrors.updates.jenkins.io)|20.7.178.24|:443... connected. HTTP request sent, awaiting response... 404 Not Found 2024-12-23 05:13:31 ERROR 404: Not Found.

Hi @vsrucha , this logs excerpt it not sufficient: yes it shows HTTP/404 but it is the only information we can get from it. We need more information.

There is clearly an issue on your setup as we haven't heard about any issue and we cannot reproduce on any of our LTS controllers.

What is the configured Update Center URL in this Jenkins controller? It looks like you're having a setup which forces the use of "https://updates.jenkins.io/dynamic-stable-2.479.2/update-center.json" which is wrong (the default URL is https://updates.jenkins.io/update-center.json: try to empty the field in the UI, in the Plugin Manager => the button "Reset to default will appear and set the value to this URL).

[timja]

How are you downloading plugins is it inside Jenkins or using something else?