Hi,
If I remember correctly: If the http test is red because Xymon cannot connect to the server on port 443, then Xymon will never retrieve the SSL certificate (no connection = no SSL data). This will cause the sslcert status to be purple, because it cannot be updated.
Med venlig hilsen / Best regards
Henrik Juul Størner Senior IT Arkitekt - IT-sikkerhed
Fra: Josh Luthman <josh@imaginenetworksllc.com> Sendt: 20. marts 2025 21:56 Til: Jaime Kikpole <jkikpole@ichabodcrane.org> Cc: Xymon mailinglist <xymon@xymon.com>; Jeremy Laidman <jeremy@laidman.org> Emne: [Xymon] Re: SSL stuck on purple
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Why is the http test red?
On Thu, Mar 20, 2025 at 4:46 PM Jaime Kikpole <jkikpole@ichabodcrane.org<mailto:jkikpole@ichabodcrane.org>> wrote: From hosts.cfg, with redactions between < and >: <IP address> <hostname>.ichabodcrane.org<http://ichabodcrane.org> # route:10.5.0.1 https://<hostname>.ichabodcrane.org<http://ichabodcrane.org> noconn
The ghosts report shows no clients.
The hostname definitely resolves (tested on the VM with the xymon server) to the IP address. The purple alert is in a column labeled "sslcert" and the red is in "http". The data in the page with the details about sslcert shows the correct dates and a green alert. The data in the page with the http details shows the message "SSL error" after the https://.... URL. When viewing that URL, it redirects path on the same server. This hasn't given me trouble over the last several years and the only thing that changed on the monitored system is that its IP address changed at the VM hosting service.
Jaime Kikpole
Director of Technology Ichabod Crane Central School District (518) 758-7575, x5425
On Thu, Mar 20, 2025 at 4:33 PM Josh Luthman <josh@imaginenetworksllc.com<mailto:josh@imaginenetworksllc.com>> wrote: The IP in the first column is used in the event the name can't be resolved (or # testip is appended).
The purple test means there is no report for the test (for half an hour I think?) In this case you're testing from the Xymon Server so it is responsible for doing the test.
Are you certain the name of the host matches? Are there any ghosts?
Are you looking at the "sslcert" column? What does your hosts.cfg line look like - does it have an https url?
On Thu, Mar 20, 2025 at 3:38 PM Jaime Kikpole via Xymon <xymon@xymon.com<mailto:xymon@xymon.com>> wrote: Thanks for the ideas. That gave me more to try and I made some progress, but not much.
I discovered that hosts.cfg still had the old IP address. I updated that, but there was no change. I restarted the xymon server process and there was no change. I did a "xymon 127.0.0.1 drop <IP address>" and there was no change. Would you suggest a "xymon 127.0.0.1 drop <FQDN> http" or something like that?
I see what I would expect when using "curl https://<FQDN>" and the logs only show one interesting line within 2025, so I suspect that it all comes down to that one hosts.cfg line with the old IP address.
When I used "grep <server> * | grep 2025 | less", I see the following line and then everything else was from notifications.log about emailing my department's outages notification email address.
history.log:2025-03-18 14:54:12.042214 Will not update /usr/local/www/xymon/data/hist/server,fqdn,redacted.sslcert - color unchanged (purple)
What do you think? Should I just deal with the loss of historical data and drop the host by FQDN?
Jaime Kikpole
Director of Technology Ichabod Crane Central School District (518) 758-7575, x5425
On Wed, Mar 19, 2025 at 7:49 PM Jeremy Laidman <jeremy@laidman.org<mailto:jeremy@laidman.org>> wrote: Hi Jaime<mailto:Hi%20Jaime%0d%0dOn%20Thu,%20> <mailto:Hi%20Jaime%0d%0dOn%20Thu,%20> On Thu, <mailto:Hi%20Jaime%0d%0dOn%20Thu,%20> 20 Mar 2025 at 02:11, Jaime Kikpole via Xymon <xymon@xymon.com<mailto:xymon@xymon.com>> wrote: I have a Xymon ins<mailto:ave%20a%20Xymon%20ins>tall that was monitoring (among other things) an HTTPS site. That site moved to a new IP and while I did update the public DNS records it was a few days (or maybe two weeks?) before I remembered to update the internal DNS records. By then, Xymon was reporting red for HTTPS and purple for SSL.
I've corrected the DNS records and the VM running Xymon is resolving it correctly, but now it is still showing the same red and purple alerts. Every now and then, they'll switch to green for a little while and then back to red and purple. I'm not sure why.
Xymon's web interface shows that the certificate is valid for more than 2 months. So that isn't it. I've restarted the Xymon server process and even the whole OS, but this issue remains.
Any ideas on what I could check?
First, review the content of the https status page. There may be non-obvious clues here. There's a difference between "connection refused" and "connection timed out" and this can lead you in different directions to identify the cause. For example, if you have a content check configured ("cont=..." in hosts.cfg), which is failing due to new content on the new webserver, this will be explained on the status page.
Second, I would check that your Xymon server can actually connect to the new IP address on port 443. I usually use "telnet <IP> <port>" and see if it connects, gets a connection refused, or a timeout, but netcat/ncat/nc works too. For an HTTPS website (as distinct from HTTP) I sometimes use an openssl command to see if the TLS/SSL interaction works, which tells me that there's no issue on the webserver itself, something like "openssl s_client -connect <IP>:<port> </dev/null". Even simpler, run curl or wget to fetch a webpage, but if you have a proxy set anywhere, this may give you an invalid result.
Thirdly, I would check the xymonnet.log file for any indications of problems, which might suggest a cause. Having xymonnet in debug mode might help (adding "--debug" into the CMD line of the [xymonnet] block in tasks.cfg). Alternatively, you could run xymonnet directly yourself, and look at the output. Something like this: xymoncmd xymonnet --no-update --debug <hostname>
Good luck with finding the problem.
Cheers Jeremy
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