504 Gateway Timeout error

This is generally not a MediaWiki error, it's a webserver proxy error. I'd advise to check to see which webserver, which url is tried internally behind that proxy and if that is reachable from that machine.

This issue started recently

If you didn't change anything in your MediaWiki setup (which is btw 6 years old, with multiple security issues), then the logical conclusion is that something else in your landscape changed, that is causing this. Updates of hosting images, changed routing or firewall, config changes etc etc. seem most likely.

Could you please help us troubleshoot this issue or point us to any

logs/configurations we should specifically check? Any guidance or recommendations would be greatly appreciated.

Have you read https://www.mediawiki.org/wiki/Manual:How_to_debug. ? I'd suggest setting up a debug log, and try to figure out if. you can figure something out that way.

Dear MediaWiki Support Team, Technology Analyst, Infosys Limited

We are a bunch of volunteers doing some MediaWiki development. We are NOT a support team and do not provide support to multibillion consultancy firms. I'm being pretty charitable here explaining a few basic analysis approaches that should be pretty obvious to any medium level engineer. I'd expect a WHOLE LOT more of details if you are stuck at an actual MediaWiki level issue, before someone from a company with as many resources and employing 300 000 people reaches out. However, https://www.mediawiki.org/wiki/Professional_development_and_consulting lists a few agencies and individuals who are available for hire.

DJ

On Mon, Oct 6, 2025 at 11:38 AM Akshay Sawade via Wikitech-l < wikitech-l@lists.wikimedia.org> wrote:

Hi Mediawiki team,

Any update on this.

Thanks

Akshay Sawade

*From:* Akshay Sawade *Sent:* Wednesday, October 1, 2025 4:12 PM *To:* 'wikitech-l@lists.wikimedia.org' wikitech-l@lists.wikimedia.org *Cc:* Avkash Samrit avkash.samrit@infosys.com; Mital Mansukhbhai Fadadu Mital_Fadadu@infosys.com; Nitin Kedhavrao Matte <nitin.matte@infosys.com

...

*Subject:* Request for Help: 504 Gateway Timeout After Authentication – MediaWiki 1.34.4 with PluggableAuth + SimpleSAMLphp

Dear MediaWiki Support Team,

We are currently facing an issue with our MediaWiki instance and would appreciate your assistance in diagnosing and resolving it.

Issue Summary :

After completing the SAML authentication process, the application redirects to:

https://fssfed.ge.com/fss/idp/wSxxI/resumeSAML20/idp/SSO.ping

This URL loads for about a minute and then results in a 504 Gateway Timeout error. The final redirected URL when the error occurs is:

https://wiki.apps.domain.net/wiki/Special:PluggableAuthLogin

System Information :

MediaWiki Version: 1.34.4 (ff6464d)

PHP: 7.4.33 (fpm-fcgi)

MySQL: 8.0.35

ICU: 74.2

Elasticsearch: 6.8.23

LuaSandbox: 4.1.2

Lua: 5.1.5

Authentication Configuration :

We are using the following extensions for authentication:

PluggableAuth

SimpleSAMLphp

This issue started recently and prevents users from logging in via SAML. We have verified that our IdP is reachable and functional independently.

Request :

Could you please help us troubleshoot this issue or point us to any logs/configurations we should specifically check? Any guidance or recommendations would be greatly appreciated.

Thank you for your time and support.

Regards,

Akshay Sawade

Technology Analyst, Infosys Limited

akshay.sawade@infosys.com

---

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