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From Peter Donald <pe...@apache.org>
Subject Re: Would a shutdown script be useful?
Date Sat, 07 Sep 2002 11:48:03 GMT
On Sat, 7 Sep 2002 13:30, David W. wrote:
> Currently you can tell Phoenix to shutdown by sending an interrupt signal
> in whatever way your operating system supports.  A shutdown script isn't
> really necessary.  Some users might find it more comfortable, though. 
> After all, that 'JVM has been abnormally terminated' message doesn't quite
> leave a warm fuzzy feeling -- but that's another topic.
> And once you've implemented a shutdown script, you might as well stick on a
> restart script.
> Do -shutdown and -restart belong as switches in CLIMain?

For unix there is already such functionality (try phoenix.sh 
[start|stop|restart|status]) and for windows you need to use the wrapper 
toolkit (wrapper.sourceforge.net) to get the equivelent behaviour.

Another way we have discussed is something like the following. We keep a magic 
"cookie" file in somewhere like $PHOENIX_HOME/conf/cookie - this would be 
used to do a simple digest or symetric encryption of a message that can be 
sent to the server. So we could tell the server to shut itself down by 
launching a client and sending this message.

The resuslt is that any one with permission to read the file 
$PHOENIX_HOME/conf/cookie has permission to shutdown the server. It is thus 
reasonable safe without being too painful to work with.


Peter Donald
"Only two things are infinite, the universe and 
human stupidity, and I'm not sure about the 
former." -Albert Einstein 

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