Re: [freenet-support] JVM restart every few minutes - prng.seed missing

2011-04-16 Thread Matthew Toseland
On Saturday 16 Apr 2011 13:45:42 artur wrote:
> Hi,
> 
> you can configure Java to use /dev/urandom instead.
> 
> 
> On my Linux system it is in the file:
> /etc/java-config-2/current-system-vm/lib/security/java.security
> The entry:
> securerandom.source=file:/dev/urandom
> 
> Or you can add the the following parameter to the startup script:
> -Djava.security.egd=file:/dev/urandom

It might help but IIRC we use it directly.


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Re: [freenet-support] JVM restart every few minutes - prng.seed missing

2011-04-16 Thread Roland Häder
Hi,

on my Debian Unstable with OpenJDK 6, it is:

-
$ grep securerandom /etc/java-6-openjdk/security/java.security 
# the securerandom.source property. If an exception occurs when
securerandom.source=file:/dev/urandom
# Specifying this system property will override the securerandom.source 
-

Regards,
Roland



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Re: [freenet-support] JVM restart every few minutes - prng.seed missing

2011-04-16 Thread Bernd Frank
I don't realize what entropy means. I thought it's something with the 
connections to other nodes.

I use rng-tools (+ /dev/urandom) to 'collect' some data.

Thank you Dennis!

After my node goes online, I see the seed.prng, which was missing in the past.




 Original-Nachricht 
> Datum: Fri, 15 Apr 2011 22:02:00 -0400
> Von: Dennis Nezic 
> An: [email protected]
> Betreff: Re: [freenet-support] JVM restart every few minutes - prng.seed 
> missing

> On Sat, 16 Apr 2011 01:26:49 +0200, [email protected] wrote:
> > FProxy shows me 'There isn't enough entropy available' for hours.
> > It looks like the wrapper restart the jvm every few minutes.
> 
> If the problem is with entropy, you can try running a large I/O
> operation, like "find /" or something. You might also want to try
> "rngd" (rng-tools).[1]
> 
> You can find how much entropy your system has available by:
> "cat /proc/sys/kernel/random/entropy_avail", with 100-200 or less
> probably being too low
> 
> 
> [1] http://linux.die.net/man/8/rngd
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Re: [freenet-support] JVM restart every few minutes - prng.seed missing

2011-04-16 Thread artur
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Hash: SHA1

Hi,

you can configure Java to use /dev/urandom instead.


On my Linux system it is in the file:
/etc/java-config-2/current-system-vm/lib/security/java.security
The entry:
securerandom.source=file:/dev/urandom

Or you can add the the following parameter to the startup script:
- -Djava.security.egd=file:/dev/urandom

artur


Am 16.04.2011 01:26, schrieb [email protected]:
> Hi there,
> 
> I could not connect to freenet and I don't find the error.
> 
> I use Debian Squeeze x86 headless, installed latest JRE from repository.
> I downloaded freenet headless installer, extract the gz tar and execute 
> 1start.sh
> 
> FProxy shows me 'There isn't enough entropy available' for hours.
> It looks like the wrapper restart the jvm every few minutes.
> 
> Also find the following line in freenet log:
> 
> '(freenet.crypt.Yarrow, WrapperListener_start_runner, ERROR): IOE trying to 
> read the seedfile from disk : /opt/freenet/prng.seed (No such file or 
> directory)'
> 
> What does it mean?
> 
> 
> Additionaly you'll find my wrapper.log attached. 
> 
> It would be greate if someone can give me a clue to solve this issue.
> 
> If you need more informations, don't mind to ask :-)
> 
> Thanks a lot
> Fox
> 
> 
> 
> P.S.: I'm using for the first time a mailing list, so I hope I'm doing fine.
> 
> 
> 
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Re: [freenet-support] JVM restart every few minutes - prng.seed missing

2011-04-16 Thread folkert
> > FProxy shows me 'There isn't enough entropy available' for hours.
> > It looks like the wrapper restart the jvm every few minutes.
> 
> If the problem is with entropy, you can try running a large I/O
> operation, like "find /" or something. You might also want to try
> "rngd" (rng-tools).[1]

when there's a spare audio device in the system:
http://www.vanheusden.com/aed/

when there's a redundant tv-card/webcam on the system:
http://www.vanheusden.com/ved/

all other cases: http://www.vanheusden.com/te/ altough on some systems
it sucks up loads of cpu

> You can find how much entropy your system has available by:
> "cat /proc/sys/kernel/random/entropy_avail", with 100-200 or less
> probably being too low


Folkert van Heusden

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Re: [freenet-support] JVM restart every few minutes - prng.seed missing

2011-04-15 Thread Dennis Nezic
On Sat, 16 Apr 2011 01:26:49 +0200, [email protected] wrote:
> '(freenet.crypt.Yarrow, WrapperListener_start_runner, ERROR): IOE
> trying to read the seedfile from disk : /opt/freenet/prng.seed (No
> such file or directory)'

Also, you might want to make sure that that file
"/opt/freenet/prng.seed" exists and has proper permissions for freenet
to read it? :p
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Re: [freenet-support] JVM restart every few minutes - prng.seed missing

2011-04-15 Thread Dennis Nezic
On Sat, 16 Apr 2011 01:26:49 +0200, [email protected] wrote:
> FProxy shows me 'There isn't enough entropy available' for hours.
> It looks like the wrapper restart the jvm every few minutes.

If the problem is with entropy, you can try running a large I/O
operation, like "find /" or something. You might also want to try
"rngd" (rng-tools).[1]

You can find how much entropy your system has available by:
"cat /proc/sys/kernel/random/entropy_avail", with 100-200 or less
probably being too low


[1] http://linux.die.net/man/8/rngd
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