Re: 500 instances of tomcat on the same server

2021-06-28 Thread Guido Jäkel
Dear Brian, please take the time to read about Linux Kernel namespaces as the technical base of containers. It's like two viewpoints to one thing. Take the network namespace as an example: From the conceptual point of view it looks like you have N indipended, functional identical "IP Stacks".

Re: Why does Tomcat open connections on localhost?

2020-03-31 Thread Guido Jäkel
On 2020-03-31 15:34, Mark Thomas wrote: > On 31/03/2020 13:49, Aditya Kumar wrote: >> Hi Mark, >> >> Sorry I'm not familiar with what a Selector is? However on one system I've >> noticed 28000 such connections. Are these caused by client connections? I'm >> not saying the connection originates

Re: Followup2: Changed behaviour of Tomcat Deployment/Context/Lifecycle Manager concerning symbolic links

2019-03-10 Thread Guido Jäkel
Dear John, Hi Rainer, Thank you for your hints. I leaned to used this features on Github locate the commit - it's https://github.com/apache/tomcat/commit/fd2abbb525660a9968694afd99a58f8c22cb54c6 and it was committed by Mark Thomas. I don't know about the Tomcat project policies, but

Re: Followup2: Changed behaviour of Tomcat Deployment/Context/Lifecycle Manager concerning symbolic links

2019-03-09 Thread Guido Jäkel
Dear Mark, thank you for comments and hints. I would say I have a wide knowledge about hard and software. But as I'm not working as a software developer, I'm not familiar with a lot of things in deep. I also don't have key-ready workbenches or buildchains. But I'll try to locate the

Re: CLOSE_WAIT between Application (Tomcat) and Apache HTTPD

2017-05-11 Thread Guido Jäkel
Dear André, ups - yes, I confused both. FIN ;) Guido On 11.05.2017 13:37, André Warnier (tomcat) wrote: > I believe that the explanation given below by Guido is incorrect and > misleading, as it seems to confuse CLOSE_WAIT with TIME_WAIT. > See : TCP/IP State Transition Diagram (RFC793) > >

Re: OutOfMemoryError: PermGen space - SOLVED

2016-07-23 Thread Guido Jäkel
On 22.07.2016 19:15, Berneburg, Cris J. - US wrote: > The OutOfMemoryError in Tomcat Manager was caused by a memory leak when Log4J > did not terminate properly. This was due to my mistake of neglecting to set > up the necessary Log4J shutdown procedures. > > Adding Log4jServletContextListener

Re: A complex issue concerning the application lifecycle, MBeans and Spring

2016-07-14 Thread Guido Jäkel
On 14.07.2016 22:09, Mark Thomas wrote: > On 14/07/2016 21:14, Mark Thomas wrote: >> On 14/07/2016 09:26, Jäkel, Guido wrote: > > > >>> So maybe there should be a special code path in case of an ongoing >>> initialization on the top like the 'if(unloading)' clause. The note states, >>> that

Re: A complex issue concerning the application lifecycle, MBeans and Spring

2016-07-13 Thread Guido Jäkel
Dear Mark, > We need to find out what is triggering the second, unwanted > initialization. You'll need to add some logging to your app to capture > the relevant stack trace. When you have it, post it here. taking remote access, I was able to extract a (hope so) relevant stack trace from the

Re: A complex issue concerning the application lifecycle, MBeans and Spring

2016-07-13 Thread Guido Jäkel
On 13.07.2016 22:41, Mark Thomas wrote: > I've been through the MBean descriptor for a web application and as far > as I can tell, reading of all of the attributes is passive. It might > return a few unexpected nulls or maybe thrown an exception but it > shouldn't trigger any additional