renewing an ssl certificate

[Lyallex]

Tomcatters

After some sterling support from this list a while ago which included
a code change I have been successfully running
Apache Tomcat 7.0.70 stand alone (no httpd front end) with SSL/TLS for
a year now without problems, it just works, it never falls over
and it has withstood some concerted attacks by all sorts of
scallywags. Impressive.

It is now time to renew my ssl certificate and I'm getting a bit jumpy.

I managed to get everything working first time around following the docs at
http://tomcat.apache.org/tomcat-7.0-doc/ssl-howto.html#General_Tips_on_Running_SSL

According to my service provider (comodo) I have to submit a new
certificate signing request which (I think) means creating a self
signed certificate.
Will this mess up me existing cert, it still has 10 days to go?

Is the process the same as installing first time or are there some
gotchas I need to be aware of

Thanks, nervously
Lyallex

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Re: Tomcat 8/Redhat Linux 6.6 /Kernal 2.6.32 - Memory Won't Release

[Eric Chua]

 blockquote, div.yahoo_quoted { margin-left: 0 !important; border-left:1px 
#715FFA solid !important; padding-left:1ex !important; background-color:white 
!important; } I need some direction.  It seems like the solution was to use 
-XX:MinHeapFreeRatio=25 -XX:MaxheapFreeRatio=50
While looking at the net,  are there specific parameters for red hat Linux?  If 
so,  where do you find them?  RHL has some parameters for JBoss but can't find 
much for tomcat.
Eric

Sent from Yahoo Mail for iPhone


On Monday, March 20, 2017, 7:55 PM, Eric Chua  wrote:

I use free -m , ps and top.  I have three separate web applications.  One that 
runs one Tomcat7/Java 7, one built on Java8/Tomcat8 and one that  was converted 
from Java7/Tomcat7 to Java8/tomcat8.  When running our Java 7 application, it 
takes very little memory running on windows and Linux. For the Java8/Tomcat 8 
applications, the memory balloons for both to the point all other applications 
slow down. We are running seeing this issue in QA right now.  We noticed that 
our UAT didn't have this issue so we moved the code over to QA and pointed to 
the UAT DB environment.  The problem seems to go away but when we take the same 
UAT Code on QA server and point to the QA DB, the problem (memory ballooning) 
came back. We are still testing but noticed that we do a monthly patch. Our QA 
server which was recently patched has a newer patch than our UAT environment.  
We are going to try to recreate the same problem with our UAT environment 
tomorrow.  It is strange that the QA db seems to trigger the issue but it might 
be because QA has many more records.  What can't be explained is the memory 
that disappears. We attempted to clear the memory cache by freeing it 
up(Aurelien Suggestion) and it doesn't seem to work.  The memory is being held 
or utilized.  I am not the unix admin so I have to keep going back and forth 
with him and we are constantly rebooting the server to recover the memory to 
try to figure out this issue.

QA Server - Linux QA 2.6.32-642.15.1.el6.x86_64
UAT - Linux UAT 2.6.32-642.13.1.el6.x86_64

The administrator is pointing to our application and says he believes we have a 
memory leak. We are using JProfiler, and can't find any leak.  We have a 
garbage collection log. Would that help to identify the issue?
Thanks for everyone's input.  Still looking. Hoping tomorrow we get a more 
definitive answer on the source of the issue.

 

On Monday, March 20, 2017 5:08 PM, calder  wrote:
 

 On Mon, Mar 20, 2017 at 4:46 PM, Eric Chua  wrote:

> siteadm@mavs01web11q:/data/tools/jvmtop $ top -U siteadm
>
> top - 12:41:20 up 19 min,  3 users,  load average: 1.25, 1.24, 0.87
>
> Tasks: 130 total,  1 running, 129 sleeping,  0 stopped,  0 zombie
> Cpu(s): 98.5%us,  1.0%sy,  0.0%ni,  0.0%id,  0.0%wa,  0.0%hi,  0.5%si,  0.0%st
> Mem:  16334352k total, 15623536k used,  710816k free,    84096k buffers
> Swap:  4128764k total,        0k used,  4128764k free,  339484k cached
>
>  PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND
> 2019 siteadm  20  0 6054m 4.1g  17m S 98.0 26.5  11:29.56 java
> 2523 siteadm  20  0 19288 1452 1080 R  0.3  0.0  0:00.02 top
> 1950 siteadm  20  0  105m 2100 1560 S  0.0  0.0  0:00.14 bash
>
> On Monday, March 20, 2017, 10:21 AM, Eric Chua  wrote:
>
> siteadm  2007    1  7 11:04 pts/0    00:00:00 
> /data/java/jdk1.8.0_121/bin/java -

[snip]
>
> My kernel is 2.6.32-642.15.1.elf.x86_64
> Memory gets all allocated and  after I kill it only a portion is recovered.  
> Any ideas?
>
> top - 11:18:36 up 16 min,  2 users,  load average: 1.92, 1.39, 0.68
> Tasks: 123 total,  1 running, 122 sleeping,  0 stopped,  0 zombie
> Cpu(s):  0.7%us,  0.0%sy,  0.0%ni, 99.3%id,  0.0%wa,  0.0%hi,  0.0%si,  0.0%st
> Mem:  16334352k total, 11215624k used,  5118728k free,    33788k buffers
> Swap:  4128764k total,        0k used,  4128764k free,  313940k cached

>  PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND
> 1931 siteadm  20  0  105m 2120 1568 S  0.0  0.0  0:00.10 bash
> 2319 siteadm  20  0 19288 1460 1092 R  0.0  0.0  0:00.09 top

Please do not top-post - if that term is unfamiliar to you, please
read this before posting again.
http://www.idallen.com/topposting.html

"top" is simply a "ps" that refreshes its output every so often.
A word of warning - for "ps" (and of course "top"), the output of VSZ
and RSS are almost **always wrong**.    If that statement is doubtful
to anyone, choose a process in the ps list and run "pmap -d "
and compare the results - you will see that the ps output is usually
over-inflated (we'll not get into the why's here).

If you are worried about the "Mem: 16334352k total, 11215624k used,
5118728k free" output from ps/top, don't be - Linux will take up RAM
to use for caching, and in many cases, you may see a Linux (or Unix)
system where there is almost NO available memory.  But don't be

Re: Websocket & Logging

[Addy D]

Thank you all for helping out, it really solved my issue :)

On Thu, Mar 30, 2017 at 9:40 PM, Mark Thomas  wrote:

> On 30/03/17 16:56, Addy D wrote:
> > On Thu, Mar 30, 2017 at 8:49 PM, Konstantin Kolinko <
> knst.koli...@gmail.com>
> > wrote:
> >
> >> 2017-03-30 12:15 GMT+03:00 Addy D :
> >>> I can see following in log, while starting tomcat:
> >>>
> >>> Mar 30, 2017 2:33:22 PM
> >>> org.springframework.web.socket.server.support.WebSocketHandlerMapping
> >>> registerHandler
> >>> INFO: Mapped URL path [/call] onto handler of type [class
> >>> org.springframework.web.socket.server.support.
> >> WebSocketHttpRequestHandler]
> >>>
> >>> Same kind of logs are also available when I run my Spring boot
> >> application,
> >>> in this app I am able to connect to wss://localhost:8443/call.
>
> 
>
> > No my application is not "ROOT",
>
> The the URL you quote above won't work.
>
> > i have my application as "myapp" but I
> > have a similar (almost same, I am moving spring boot app to tomcat)
> > spring-boot application which works fine with embedded tomcat in it with
> > the same url, in fact in application startup time, I see "/call" getting
> > registered in the tomcat log. as shown below.
>
> You have two options.
>
> 1. Rename myapp.war to ROOT.war
>
> 2. Use wss://localhost:8443/myappp/call to access your service
>
> I'd also recommend a careful read of the Servlet specification,
> particularly section 3.5 along with this page from the Tomcat docs:
> http://tomcat.apache.org/tomcat-8.5-doc/config/context.html#Naming
>
> Mark
>
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