Matching Host Names with Regex

[DanielS]

Hi community, I wrote the following Regex to match either hostname formats:

(?:ocp-p[a-zA-Z]-a\d{0,2}|worker-\d{0,2}\.ocp4-re)\.cloud\.com

The hostname are dynamically created.

I've check the rule on Regex 101 and matches everything as expected, but when I go to Dynatrace and hit preview only matches example 1 and 4. What I'm doing wrong?

worker-10.ocp4-re.cloud.com
ocp-pe-a2.cloud.com
ocp-pe-a42.cloud.com
worker-0.ocp4-re.cloud.com

Thanks in advance.

[Babar_Qayyum]

Hello @DanielS 

Please try the following:

(?:.*cloud.com)

Regards,

Babar

[DanielS]

thanks for your answer.

[ChadTurner · Accepted solution]

I'd recommend using what @Babar_Qayyum supplied, if that still fails (which i dont expect) then maybe make 4 rules, one for each line item to ensure they are working correctly. 

[DanielS]

Thanks, finally instead of doing one rule, I made one for 1 and 4 and other one for the 2,3. It's not what I wanted, but the field is limited to 80 chars, so If in a future I add more examples it would be easier to maintain.

[ChadTurner]

great to hear, but yes I've run into issues too with character limits for regex, but still cut down on the overall rules. glad it worked 

Maybe toss in a RFE for that limit to be raised. 

[DanielS]

Good Idea, I've done a request and wait if it accepted. Thanks for your answers.

[ChadTurner]

toss along the link and ill up vote it 

[DanielS]

https://community.dynatrace.com/t5/Dynatrace-product-ideas/RFE-Raise-Regex-Field-Limit/idi-p/163183

Done