Most likely it hangs waiting for enough entropy for random number
generator seeding.
Try whether the problem goes away if you add
-Djava.security.egd=file:/dev/urandom
to you process flags. If you are using older Java than Java 8 (not
possible for Tomcat 9 but just in case you also have older software
stacks running), then it would be
-Djava.security.egd=file:/dev/./urandom
The cryptic /./ is not a typo, you would need it for Java before Java 8.
If this doesn't help, then you should try capturing a few stack dumps
(thread dumps) during the long startup time. People here can help
interpret them.
Regards,
Rainer
Am 18.05.2019 um 21:55 schrieb Jerry Malcolm:
This is a weird one. It started a few months ago. I have TC 9 running
on Windows Server 16. After I reboot the entire server, Tomcat takes
forever on startup. It normally starts in about 30 seconds. But after
a server reboot it takes up to 15 minutes... chugging along at a snail's
pace starting up all of the apps on all of the virtual hosts. It always
finally gets there with everything successfully running. Other servers
on the same box (Apache, JAMES, ISC BIND, MySQL) don't have any problem
starting up. CPU, Disk, Memory, etc. usages are barely showing on the
performance graphs. There's nothing in the Catalina log or system.err
other than showing a couple of minute gap in the time stamp between each
app as it starts up. If I need to reboot again later, it boots again in
about 30 sec as expected.
First question... any ideas off the top of your head that might be
causing this?
Second question... is there any other logging I can turn on that might
explain what TC is blocking on?
Thanks.
Jerry
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