Ok....it never ocurred to me (us?).....
Running RedHat/apache/Jserv/P333/64 MB ram/IDE drives
Supports a web site with approx 2500 hits per day.
Some hits are to generic perl cgi...some are to java servlets.
Just about all hit MySQL databases and return data.
Also running a variety of cron jobs that convert images that are being
submitted, ftp files off the box, and perform various printing chores.
Recently noticed that at periods of peak activity, Apache's ModJserv
would lose connectevity with the Jserv product....would need to restart
apache before all was well again. Drove us crazy. Logs showed the
infamous "AJP12: Cannot connect to host 127.0.0.1:8007' errors.
CPU/memory usage did not appear to be off the charts (did have high
swap numbers), but after*ering around with settings for a few days,
we decided to put another 128 MB of memory in the box.
Why Apache could no longer communicate with Jserv (and the fact that we
couldn't re-establish without restarting apache) is unknown....As far
as I know, AJP12 is a simple TCP protocol....maybe Jserv itself was no
longer listening....don't know.
Anyone have any ideas on why such an event would occur in a low-memory
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