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Case sensitivity in host+svc names

2 messages in this thread

list Japheth Cleaver · Sun, 24 Sep 2023 13:09:19 -0700 · 
Curious if anyone out there has run into issues resulting from case
sensitivity in hostnames (either self-report from the clientlog, or in
hosts.cfg) or test names. Although I imagine this is fairly uncommon in
the Linux/BSD world, I've seen AIX and Solaris systems with mixed-case
hostnames, and I imagine users of BBWin can run into this a lot.

Have you had issues with graphs not displaying, or any mismatch from
filesystem assets (like static-generated status HTML pages or notes) that
become unavailable after a name change? Or analysis.cfg or custom
xymondboard queries failing?

Looking at the PCRE->PCRE2 transition, there are a few places where case
options are called out differently. If xymon were to canonically
store/convert to lowercase internally that would help keep things cleaner,
and also allow a lot of strcasecmp's in xtree lookups to become strcmp's.


Regards,
-jc
list Scot Kreienkamp · Mon, 25 Sep 2023 13:41:01 +0000 ·
I did run into that on Windows servers. I did on some Linux servers as well. It's been a several years since I last ran into this, but as I recall it had to match case for both Linux and Windows to match what's in the hosts files. I resolved it by adding an alias to the Xymon host files in the correct case. I would be in favor of keeping everything in lower or upper case internally so that's not a problem.

Thank you for starting up maintenance again JC, I wasn't sure what I was going to do if Xymon went away. I wish I had the skills to help.

Scot Kreienkamp | Applications Infrastructure Architect | La-Z-Boy Corporate
One La-Z-Boy Drive | Monroe, Michigan 48162 | ( (XXX) XXX-XXXX | | ) X-XXX-XXX-XXXX | * user-9678697f1438@xymon.invalid
www.la-z-boy.com | facebook.com/lazboy | twitter.com/lazboy | youtube.com/lazboy



▸ quoted from Japheth Cleaver
-----Original Message-----
From: Xymon On Behalf Of J.C. Cleaver
Sent: Sunday, September 24, 2023 4:09 PM
To: xymon@xymon.com
Subject: [Xymon] Case sensitivity in host+svc names

Curious if anyone out there has run into issues resulting from case
sensitivity in hostnames (either self-report from the clientlog, or in
hosts.cfg) or test names. Although I imagine this is fairly uncommon in
the Linux/BSD world, I've seen AIX and Solaris systems with mixed-case
hostnames, and I imagine users of BBWin can run into this a lot.

Have you had issues with graphs not displaying, or any mismatch from
filesystem assets (like static-generated status HTML pages or notes) that
become unavailable after a name change? Or analysis.cfg or custom
xymondboard queries failing?

Looking at the PCRE->PCRE2 transition, there are a few places where case
options are called out differently. If xymon were to canonically
store/convert to lowercase internally that would help keep things cleaner,
and also allow a lot of strcasecmp's in xtree lookups to become strcmp's.

Regards,
-jc


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