Hello there,
I installed and tested Lucee on an Almalinux VPS back in January, and migrated my customer websites over to this new production server. Everything was working great until last week. The Apache web server started throwing 503 errors for all website page requests… so I rebooted and all was fine for a day or so, then same issue. Nothing in error logs of any substance (that I could find). I’m no Lucee or Tomcat expert, but could there be an issue with the two communicating? ie: Tomcat times out/does not respond and apache throws a 503?
I’m at a loss, since everything worked so well for months… and my customers are less than happy 
I’m running Almalinux 8.1 (linux 4.18.0), Apache 2.4.37 and Lucee 5.4.4.38 (Tomcat 9.0.80, Java 11.0.20.1).
For what it’s worth, this issue seemed to appear after I did an Apache security update… not sure if that is coincidence 
Any guidance is greatly appreciated.
Cheers… Dino
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