get 200 but found 404

[woniuzhang]

📑 I have found these related issues/pull requests

Related to issue #3277

🛡️ Security Policy

• I agree to have read this project Security Policy

Description

Below is the log of uptime.
[MONITOR] WARN: Monitor #18 'www.xxx.com': Pending: Request failed with status code 404 | Max retries: 3 | Retry: 1 | Retry Interval: 20 seconds | Type: http

But I checked nginx log and the status code is always 200.

👟 Reproduction steps

I can't, in one day ( check every minitue) this happened about 70 times

👀 Expected behavior

get 200

😓 Actual Behavior

In a few cases get 404

🐻 Uptime-Kuma Version

1.23.15

💻 Operating System and Arch

k8s

🌐 Browser

Firefox

🖥️ Deployment Environment

Runtime: v1.24.6-aliyun.1
Database: sqlite
Filesystem used to store the database on: local file
number of monitors: about 40

📝 Relevant log output

[CommanderStorm]

I think you are catching a real issue there.
Where the issue is coming from is really hard to diagnose from a far without any information about your setup

[woniuzhang]

Yeah, it's weird. But I don't know how to reproduce it, it's always normal, it becomes abnormal at some point, but not every check is abnormal, about 6% of the time it will be abnormal.

[github-actions]

We are clearing up our old help-issues and your issue has been open for 60 days with no activity.
If no comment is made and the stale label is not removed, this issue will be closed in 7 days.