Forum Discussion

Nimbostratus

Nov 07, 2024

HTTPS Monitor Health - Receive String 200 OK Not Working

Hello, Though we receive in https response header "HTTP/1.1 200 OK", the same string used as receive in Health Monitor does not work. F5 seems to ignore any character after HTTP/1.1. In sum: Not W...

monitors

Netmart

Nimbostratus

Nov 07, 2024

Thank you Akonu.

I am aware of this document and tried the following without any progress:

Receive String: HTTP/1.1 200 OK

Not Working:

HTTP/1.1 200 OK

HTTP/1.1\s200

HTTP/1\.(0|1)

HTTP/1\.(0|1) (200)

HTTP/1\.(0|1)\s200

HTTP/1.1 200 OK

HTTP/1.1\s200\sOK

200

Only Working:

==> HTTP/1.1

==> OK||200

==> <bank>

And I verified via curl/openssl the HTTPS Response header: HTTP/1.1 200 OK:

---

HTTP/1.1 200 OK

Date: Wed, 06 Nov 2024 23:52:28 GMT

Content-Type: application/json; charset=UTF-8

Content-Length: 153

Connection: close

X-Krakend: Version 2.2.0

X-Krakend-Completed: false

X-Processing-Time: 0.000029

X-Request-Id: e187dac8-20f7-43fd-b99a-6e4671b7f8e6

Expires: Wed, 06 Nov 2024 22:52:28 GMT

Cache-Control: no-cache

X-Frame-Options: DENY

Strict-Transport-Security: max-age=31536000; includeSubdomains; preload

X-XSS-Protection: 1; mode=block

Client-Verify: NONE

X-Content-Type-Options: nosniff

X-Permitted-Cross-Domain-Policies: none

Feature-Policy: geolocation 'none'; camera 'none'; speaker 'none'; microphone 'none';

Referrer-Policy: strict-origin-when-cross-origin

Expect-CT: enforce, max-age=72000

Content-Security-Policy: default-src 'self' blob:;base-uri 'self'; form-action 'self'; frame-ancestors 'self'; script-src 'self'; style-src 'self' 'unsafe-inline'; font-src 'self' data:; object-src 'none'; img-src 'self' data:;

Cache-Control: no-store

{"status":"starting","services":[{"name":"nae-kmip","status":"started"}],"messages":["all services ok, waiting 1m0s for services to continue to be ok"]}

closed

Thanks

akonu
Moderator
Nov 07, 2024
Netmart

From your update, you said the 200 does not work. if that is the case, your server could be responding to the health probes with a different status code other than 200. Can I ask that you verify the output of the monitor using the guide below.( please use the same string as the monitor send string)

K81239024: Testing HTTP/HTTPS Monitor Send String using openssl s_client and netcat (nc)

https://my.f5.com/manage/s/article/K81239024

Hope this helps.