How to check the sourcecode of an URL by using the check HTTP service (- 400 bad request)

[mbz]

Hi,

I am trying to monitor a specific web page using the check HTTP service. This by retrieving a specific value from the source code. Now I am running into the fact that it gives several messages: 400 Bad Request “ not found”. Unfortunately I’m not allowed to share the actual page, so I’ll use the following public case as a reference.

What do I have at the moment:

• Check the URL
• Url to fetch: https://nu.nl
• Use SSL/HTTPS for the connection: Use SSL with auto negotiation
• Fixed string to expect in the content:
• HTTP Method: Get (But using it or not doesn’t seem to make a difference).
  For the administration, I also filled in the: Explicit hosts & Rule properties.

Can anyone help me with this issue. Am I missing the obvious one thing?
Thanks in advance

[Glowsome (Michael Honkoop)]

Hi there, and welcome to the forum !

Can you give a bit more detail? :

• Which CheckMK version are you running ?
• which Check exactly are you using, as currently CheckMK has 2 ?:
  

The bottom one is the correct one, as you can see the top one now is set as ‘depreciated’, and most likely will be removed in a new (2.4.0?) release.

• Glowsome

[mbz]

Thank you Michael for your kind words!
We are currently on an older version: *CheckMK (Enterprise) Edition 2.1.0p40 This is not yet an option in this version (at least not for me).

Additionally, I noticed that I forgot to add some information in the original post:

• Fixed string to expect in the content:

[mbz]

Meanwhile I did find the solution of this issue: An port needed to be added.
Michael thank you for your response.