Re: spontaneous redeployment of a webapp

Mark and Linus,

On 12/11/25 2:28 AM, Mark Thomas wrote:
> On 10/12/2025 21:58, Linus Kamb wrote:
>> Mark,
>>
>> Thanks very much for your response.
>>
>> The disk is local, not shared.
> 
> So given the statement "... the disk from which all the tomcats run ..." 
> does this mean we are talking about multiple Tomcat instances running on 
> a single physical machine? Or something else?
> 
> Are any files shared between the instances?
> 
> How is the web application deployed? WAR file that Tomcat then expands?
> 
> I want to make sure I understand the architecture before I spend too 
> much time thinking about what might be going on.
> 
>> Could the fact that there was no space left on the disk be treated as
>> being unavailable?
> 
> Seems unlikely. Tomcat has a list of files it checks for each webapp and 
> looks to see if the modification time has changed.
> 
>> And why only the one webapp?  Perhaps because it was the one 
>> attempting to
>> write to the disk?
> 
> Again, seems unlikely.
> 
> Might some external process changed the last modification time on any 
> files? A back-up process maybe? Those times should not be sensitive to 
> clock / time zone changes but I'd check if there were any changes of 
> that nature just in case.

+1

Is the web application configured to auto-reload? Tomcat will watch more 
than just the timestamp on the application's deployment directory for 
changes. There are other files that can cause a reload. (But generally 
not a re-deployment.)

-chris