Not directly a tomcat question... but since TC runs on java, maybe
someone here has some suggestions. I am running a development/sandbox
server on AWS EC2, Linux 2. Only I and one other person have access to
it. Yesterday I was browsing through some pages on my site when all of
a sudden I started getting errors that all of my java classes were
compiled with a later version than the JVM. I recognized the error from
past experiences. My apps are built with Java 11, and TC is apparently
now running on Java 8. I logged into the console, and yes, my EC2 had
somehow changed to default to Java8. I changed it back, and everything
is fine. Except for the 'what happened?' part of it. We were doing an
AMI snapshot around that time which may have rebooted the EC2. But
neither of us were doing anything in the area of changing the default
jvm. We are launching live in a couple of days. So obviously
unexplained magic like this is a bit unnerving.
I know it's just speculation. But I'm just curious if anybody has
experienced anything similar to this. Any ideas why linux might decide
to automatically fall back to an older version of java?
Thx
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