admin@glassfish.java.net

Re: New Feature: Remote Restart

From: Lloyd Chambers <Lloyd.Chambers_at_Sun.COM>
Date: Tue, 07 Apr 2009 12:31:00 -0700

Byron,

Very nice!

What are the security aspects here?

Can it be done programmatically eg can the server restart itself?

Lloyd

On Apr 7, 2009, at 11:46 AM, Byron Nevins wrote:

> A new feature is now in place: Remote Server Restart
>
> How to use it:
>
> 1) start a domain with asadmin. You don't need to specify any
> special options. It will automatically start both the domain and a
> "watchdog" process. The watchdog is very lightweight. It will not
> block and it will return once it has verified that the domain has
> started. So scripts that start domains should work exactly as before.
> e.g. asadmin start-domain
>
> 2) to restart the domain, run this remote command from any computer:
> asadmin restart-domain
>
> 3) to stop the domain and the watchdog simply run
> asadmin stop-domain
>
> Notes:
> To NOT start the watchdog you need to run start-domain with the "--
> nowatchdog" option.
> You can start the domain with the --verbose option and it will be a
> watchdog and will echo all server log messages
> The watchdog process owns no window and its name in jps will appear
> as ASWatchdog
> In Verbose mode the name will appear as before and it does have a
> window and it blocks on the domain.
> If you try the restart-domain on a domain that was started with no
> watchdog - it is (by definition) an error and the domain will not be
> stopped.
> Killing the server always kills the watchdog automatically. Vice
> versa will be true too when the issue below is fixed.
> Known Issue:
> If you kill the watchdog process it will not kill the server. It
> will eventually do this exactly like verbose handles ^C entered at
> the console
>
> --
> Byron Nevins Work 408-276-4089, Home 650-359-1290, Cell 650-784-4123
> - Sun Microsystems, Inc.
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Lloyd Chambers
lloyd.chambers_at_sun.com
GlassFish Team