Re: Centralized update management (WSUS-like) for Debian-based systems?

[Juan Sierra Pons]

2013/10/28 Philipp Born :
> Hi,
>
> we're looking for something a bit WSUS-like for Debian (and Ubuntu) to roll
> out updates etc on our Debian- and Ubuntu-based infrastructure. We've
> already tried Landscape (the licensing fees are not economically for us) and
> Spacewalk (which would be perfect, if it would correctly recognize all
> packages..)
>
> What we definitely need is
> - webinterface
> - should do its own update lookups
> - should tell all and/selected clients to install/update all/selected
> packages
> - communication needs to be client-initiated (internal routing won't allow
> anything else)
> - Permissions (limit certain users to certain systems, user xy can see
> updates but not start a rollout)
> - logging (very important, every action done needs to be logged somewhere)
>
> Also LDAP-Authentification would be a nice-to-have.
>
> Would be great if it would be an (active) open source project.
>
> Maybe you know something usable that would fit somehow these requirements?
>
> Thanks for your help!
>
> Greetings from Germany
> - Philipp
>
>
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Hi

With time and work you can fill more or less all your request using:
puppet+git+apticron+nagios/icinga+etc.

> - webinterface
Puppet Dashboard + Puppetdb + gitweb
> - should do its own update lookups
Puppet + apticron or puppet + nagios/icinga check-apt
> - should tell all and/selected clients to install/update all/selected
> packages
Puppet + apticron or puppet + nagios/icinga check-apt
> - communication needs to be client-initiated (internal routing won't allow
> anything else)
Puppet client starts the communication
> - Permissions (limit certain users to certain systems, user xy can see
> updates but not start a rollout)
Can be achieve using gitolite or other git crontrol system (not tested)
> - logging (very important, every action done needs to be logged somewhere)
All is looged on the puppetmaster logs and reports
> Also LDAP-Authentification would be a nice-to-have.
Puppet dashboard support apache/ldap authentication

> Would be great if it would be an (active) open source project.
It is available an open source version [1]

[1]http://puppetlabs.com/puppet/puppet-open-source

Best regards

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Re: ssh tunnel delay

[Juan Sierra Pons]

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2013/9/10 Sean Alexandre 
>
> On Tue, Sep 10, 2013 at 01:11:17PM +0200, Juan Sierra Pons wrote:
> > Hi,
> >
> > I don't see anything strange in the logs provided. Do you see anything
> > strange in your dmesg, /var/log/daemon.log, etc?
> >
> > Is the DNS on the server's side working properly? Sometimes when the
> > reverse DNS is not properly configure some TCP based services get some
> > delay on first connection: ssh, mysql, etc
> >
> > Can a network issue  be discarded. Please check with mtr: mtr remote server
> >
> > Not a solution but a very tiny improvement , launch the tunnel with the -C
> > (compression) parameter.
>
> Thanks for looking at this. The other things you list look fine. I did notice
> something else with the log, though. Below I type the line "hello". Then
> there's the 80 second delay. And then there's the log messages after the 
> "hello":
>
> debug1: Entering interactive session.
> client> nc localhost 1110
> hello
> debug1: Connection to port 1110 forwarding to localhost port 1212 requested.
> debug2: fd 6 setting TCP_NODELAY
> debug2: fd 6 setting O_NONBLOCK
> debug3: fd 6 is O_NONBLOCK
> debug1: channel 2: new [direct-tcpip]
> debug2: channel 2: open confirm rwindow 2097152 rmax 32768
>
> I think the delay no longer happens, with subsequent lines,  because
> TCP_NODELAY and O_NONBLOCK get set. I wonder if there's a way to configure
> things to set those from the start?
>
>
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Hi,

I have found a kind of workaround:
http://www.gossamer-threads.com/lists/openssh/bugs/56042
If the ssh client is invoked with:
ssh -N host -R port # TCP_NODELAY is not set
ssh -n host -R port sleep 1d # TCP_NODELAY is set - this is a workaround

Can you try to launch the tunnel without the -N parameter (maybe you
can send later the tunnel to background)

Regards


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Re: ssh tunnel delay

[Juan Sierra Pons]

Hi,

I don't see anything strange in the logs provided. Do you see anything
strange in your dmesg, /var/log/daemon.log, etc?

Is the DNS on the server's side working properly? Sometimes when the
reverse DNS is not properly configure some TCP based services get some
delay on first connection: ssh, mysql, etc

Can a network issue  be discarded. Please check with mtr: mtr remote server

Not a solution but a very tiny improvement , launch the tunnel with the -C
(compression) parameter.

Best Regards


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2013/9/10 Sean Alexandre 

> On Tue, Sep 10, 2013 at 12:25:59PM +0200, Juan Sierra Pons wrote:
> > Can you launch the tunnel in verbose (-vvv) mode and send the logs?
> > ssh -vvv -o ExitOnForwardFailure=yes -fN -L1110:localhost:1212 server
>
> Here's what I'm seeing with -vvv:
> http://paste.debian.net/37873/
>
>
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>

Re: ssh tunnel delay

[Juan Sierra Pons]

Hi,

Can you launch the tunnel in verbose (-vvv) mode and send the logs?
ssh -vvv -o ExitOnForwardFailure=yes -fN -L1110:localhost:1212 server

Thank you

Regards

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2013/9/10 Sean Alexandre 

> I'm seeing a delay when I attempt a connection through an ssh tunnel. The
> connection's fast without the tunnel, but has an inital 80 second delay
> with
> it.
>
> Here's the case that works, without the tunnel.  I see lines I type echoed
> immediately:
>
> server> nc -l -p 1212
> client> nc server 1212
>
> But if instead I do this, the first line isn't seen for about 80 seconds.
>  After that,
> everything's fine and lines appear immediately:
>
> server> nc -l -p 1212
> client> ssh -o ExitOnForwardFailure=yes -fN -L1110:localhost:1212 server
> client> nc localhost 1110
>
> I can ssh to the server fine, with no delay. Any ideas why the tunnel has
> the delay?
>
>
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Re: avoid starting a program during reboot

[Juan Sierra Pons]

Hi

you can use chkconfig ( apt-get install chkconfig) command to disable
services on boot

root@do1:~/.SpiderOak# chkconfig --list apache2
apache2   0:off  1:off  2:on   3:on   4:on   5:on   6:off

root@do1:~/.SpiderOak# chkconfig  apache2 off
root@do1:~/.SpiderOak# chkconfig --list apache2
apache2   0:off  1:off  2:off  3:off  4:off  5:off  6:off

root@do1:~/.SpiderOak# chkconfig  apache2 on

root@do1:~/.SpiderOak# chkconfig --list apache2
apache2   0:off  1:off  2:on   3:on   4:on   5:on   6:off


Hope it helps

Best regards

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2013/9/9 lina 

> Hi,
>
> I do not want to start some program, such as apache server, during reboot,
>
> shall I simply remove it from /etc/init.d/ ?
>
> haha ... is it a bit brutal? or lack elegance?
>
> THanks with best regards,
>
>
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Re: need help configuring exim4 on a new debian wheezy install

[Juan Sierra Pons]

El 24/07/2013 23:47, "Don Raikes"  escribió:
>
> Hello,
>
>
>
> I have a new debian wheezy installation on my laptop, and I wish to
configure exim4 so that it will utilize smtp.live.com to send email outside
my local machine.
>
>
>
> I do not have my own domain to use for the domain field in the
configuration process, so what is the best method for configuring exim4.
>
> BTW: I will be using it with mutt and mpop/procmail.
>
> --
> Best Regards, Donald
>
>
> Donald raikes | Accessibility Specialist/ QA Engineer
> Phone: +15202717608 | Mobile: +15202717608
> Oracle Quality Assurance
> | Tucson, Arizona
>
> Oracle is committed to developing practices and products that help
protect the environment
>
>
Hi

Have a look to this thread:

http://lists.debian.org/debian-user/2011/09/msg01176.html

And use your SMTP configuration instead.

Best regards

Re: bootmessages in logfile?

[Juan Sierra Pons]

Hi,

wajig search bootlogd
bootlogd - daemon to log boot messages

 bootlogd logs all messages printed to the system console during
system boot, and records those messages to a logfile.
Página principal: http://savannah.nongnu.org/projects/sysvinit

Regards

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2013/7/5 vwf :
> Hello During boot, when starting all services, all kinds of messages
> appear on screen but I cannot find that same list in my logfiles.
> Is it possible to get that same info on disk?
>
> Thanks
>
>
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Re: Driver issue: ASUS NX1101 gigabit PCI adapter connection issue

[Juan Sierra Pons]

Hi,

I am using the realtek driver to get the WOL working on my network card.
I followed these pages to get the driver working:

http://djlab.com/2010/10/fixing-rtl8111-8168b-driver-debian-ubuntu/comment-page-1/
http://bernaerts.dyndns.org/linux/49-debian-server-rtl8111

Without more info (eg: dmesg, logs, etc) I think you have missed the
update-initramfs part, meaning your kernel doesn't know about the new
driver every time you reboot your computer.

To make changes permanent you must use update-initramfs -u. Check both
links for more info.

Hope it helps

Best Regards

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Re: [OT] How to redirect input/output to another console?

[Juan Sierra Pons]

Hi again,

With the byobu package you can do the same as stated by Lars or Dom as
it is based on GNU Screen

byobu - powerful, text based window manager and shell multiplexer

Another option you have for share read-only your session or kept logs
of your sessions is the script tool (from bsdutils package)

In your session (the one you want to share as read-only) type: script -f
This will save in the current path all you screen movement (your
commands and its results) in a file called typescript

In the other user session only is needed to tail -f typescript

This session will see all the changes in the original session in real
time. Like a text based VNC read-only session.

Best regards

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Re: [OT] How to redirect input/output to another console?

[Juan Sierra Pons]

On Sep 8, 2012 4:25 PM, "Hans-J. Ullrich"  wrote:
>
> Hi folks,
>
>
>
> I know, maybe this is not the right forum, as my question is not really
debian based. But maybe you might want to help either.
>
>
>
> I have a friend far away from me, which is using debian/testing same as
me. As I am helping this woman sometimes, and she is willing to learn, I
would give her an option, to see, what I am doing in the shell (input,
output and error).
>
>
>
> She is also capable working in the shell (but still not very experienced
with it), and so I am looking for a way, that
>
> - either she can see, what I am doing in my shell
>
> - I can see her shell
>
> - or best, we can both work in ONE shell
>
>
>
> IMO it is a good way for her, to learn, what is going on.
>
>
>
> I know, that the first was possible in the past, but I cannot remember
any more how I did it, it was something with redirecting, Of course I read
the manuals, and searched the web, but I still did not find the best
solution, yet.
>
>
>
> Any hints are welcome.
>
>
>
> Thanks for your help!
>
>
>
> Best regards
>
>
>
> Hans

Hi

You can get connected to the same console and interact at the same time
using the byoubu package.

Hope it helps

Best regards

Re: Wheezy printing problem: 2 identical (?) machines and 1 does not print PDFs

[Juan Sierra Pons]

2012/5/25 Joost Kraaijeveld :
> Hi,
>
> I have 2 identical Wheezy machines: they both have the same packages and
> the same versions for those packages Wheezy, up to date as of this
> morning). The configuration files in /etc/cups and /etc/foomatic are
> exactly identical. Both machines should print to a network printer
> (HP2200 DTN). I use Cups and Foomatic, and the recommended "HP LaserJet
> 2200 Foomatic/lj5gray" driver (the postscript driver has the same
> behaviour).
>
> Both machines print the Linux test page without problems. But one
> machine cannot print PDFs while the other one prints them without
> problem, be it a little slow (i.e. compared to the Windows machines that
> use the same printer). The problematic machine prints a PDF file as an
> almost empty pages with the following text:
> "PCL CL error
>    Subsystem: IMAGE
>    Error:     ExtraData
>    Operator:  ReadImage
>    Position:  7"
> I have re-installed/purged/rebooted etc. and nothing helped so far.
>
> Does anyone recognises this problem? Which *machine-dependent* files
> exist and in which directory are there, after an
> installation/configuration? Anyone any ideas?
>
> TIA
>
> --
> Groeten,
>
> Joost Kraaijeveld
> Askesis B.V.
> Molukkenstraat 14
> 6524NB Nijmegen
> tel: 024-3888063 / 06-51855277
> fax: 024-3608416
> web: www.askesis.nl
>
>
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Hi,

I had a similar problem long time ago I don't remember if the error
message was the same

But I solved it stopping and unplugging the printer for a while
(30 sec should be enough)

Its sound silly but it worked. :)

Best regards
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Re: mail not sending message

[Juan Sierra Pons]

2012/5/24 Chris Evans :
> I am having trouble getting mail to send the message I attach the script
> below
>
>
>
> #!/bin/bash
> wget http://digitalatoll.com/
> rc=$?
> if [[ $rc != 0 ]] ; then
>     # num...@txt.att.net
>     SUBJECT="digitalatoll server down"
>     # Email To ?
>     EMAIL="9166126...@txt.att.net"
>     # Email text/message
>     EMAILMESSAGE="msg.txt"
>     echo error on server! > msg.txt
>     mail -s "$SUBJECT" -t "$EMAIL" < $EMAILMESSAGE
>     rm msg.txt
> fi
> rm index.html
>

Hi

I think the -t option is not needed just try using

mail -s "$SUBJECT" $EMAIL < $EMAILMESSAGE

Anyway:

What error do you get?
Is the mail getting into you MTA queue? what is the output of running mailq?

Regards

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Re: FS rights error with Samba share

[Juan Sierra Pons]

 path can happen

> [Filesharing]
>
>   comment = Filesharing for All
>   path = /nas/backup/Filesharing
>   read only = No
>   create mask = 0770
>   directory mask = 0770

But with [Filesharing] share is different. Before getting to
Filesharing. your users must go through nas -> backup -> Filesharing

Check that nas has at least rwxr-xr-x . Then check backup has rwxr-xr-x too

Good luck

Best Regards

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Re: How /etc/hosts.allow /etc/hosts.deny and smb.conf play along

[Juan Sierra Pons]

2012/4/26 Tuxoholic :
> hi list
>
> Can somebody explain why smbd and nmbd are not affected by the following
> strict ruleset in /etc/hosts* ?
>
> /etc/hosts
> 127.0.0.1       MYHOSTNAME localhost.localdomain localhost
> 127.0.1.1       MYHOSTNAME
> 192.168.2.10    MYSERVER
>
> cat /etc/hosts.allow
> #ALL: localhost 127.0.1.1 192.168.2.0/24
> ALL: localhost 127.0.1.1 192.168.2.0/32
>
> /etc/hosts.deny
> ALL: ALL
>
> With this ruleset in place nmbd broadcasts still pull through and cifs mounts
> are still possible, whereas ssh/rsh access is no longer possible.
>
> To get rid of nmbd/smbd access I have to tweak smb.conf additionally:
>
> /etc/samba/smb.conf
>
> [global]
>        bind interfaces only = Yes
>        interfaces = 127.0.0.0/8, eth0
>        ;; hosts allow = 192.168.2.0/24, 127.
>        hosts allow = 192.168.2.0/32, 127.
>        hosts deny = ALL
>
> With this smb.conf tweaking it works fine, but why could smbd/nmbd run past
> /etc/hosts.allow and /etc/hosts.deny without those lines in smb.conf?
>
> To my limited CIDR understandig a /32 mask should restrict access to
> 192.168.2.0.0 and 192.168.2.1 - this should be fine for testing purposes.
>
> Once this denies all services I'd set it to /24 to have access to the whole
> "subnet" from 192.168.2.0-192.168.2.255 and 127.0.0.1 127.0.1.1
>
>
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Hi,

My two cents:

I think the problem here is between tcpwrapper linux implementation
and the the samba package.
Are you running samba as a daemon or from then inetd?

I think you are running it as a daemon and I believe (check on the
internet) samba must be compiled in a tcpwrapper friendly way (I don't
know if this is the default)

Running samba from inetd must work OK as inetd is tcpwrapper friendly.

If this doesn't help you you can try iptables (but your workaround is OK too)

Best regards.

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Re: Acceso SSH sin clave

[Juan Sierra Pons]

El día 13 de abril de 2012 15:30, Jawifi  escribió:
> Buenas, tengo el siguiente problema:
>
> Tengo una maquina corriendo Ubuntu Server y mi notebook con Debian.
> Desde el usuario "juan" de la notebook, mediante
>
> ssh juan@192.168.1.10 me conecto a la otra maquina, poniendo cada vez la
> clave.
>
> Entonces quise hacer lo que he hecho muchas veces, crear el par de
> claves (ssh-keygen -t rsa) desde la notebook y copiarla con ssh-copy-id
> -i /home/juan/.shh/id_rsa.pub juan@192.168.1.10,  termina y me da el
> mensaje de que esta todo ok.
>
> Pero, cuando desde la notebook hago ssh juan@192.168.1.10 me sigue
> pidiendo la clave.
>
> Hice esto muchas veces desde equipos ubuntu a ubuntu y debian a debian,
> nuncha habia "mezclado" ¿se puede deber a eso que no funcione? Hay que
> hacer algo distinto en estos casos?
>
> Busqué en google, pero aparecen cientos de ejemplos, como lo que yo
> hago, pero nada aclara si hay que hacer algo diferente.
>
> Gracias por leerme.
> Saludos
>
> Juan
>
>
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Hola

De primeras se me ocurre que tal vez no tengas puesto el
PubkeyAuthentication yes en el /etc/ssh/sshd_config

De todas formas nos hace falta mas informacion para poder ayudarte.

Postea la salida del comando ssh -vvv juan@192.168.1.10 para que
veamos los logs de la comunicacion entre cliente y servidor ssh.

Salu2

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Re: remote mysql is too slow

[Juan Sierra Pons]

2012/4/5 J. Bakshi :
> Hello,
>
> I have been provided a muscular linux server to use as a Mysql server
> in our organization. The server is located just beside the web server
> and within the same network. This dedicated server has 8GB RAM, i5 processors
> and running mysql as service. No apache, php . nothing. All resources are
> dedicated to mysql only.
>
> Mysql version - mysql  Ver 14.14 Distrib 5.1.49, for debian-linux-gnu (x86_64)
>
> The BIG hitch is; when we connect with this box the web sites become too slow.
> I have added the following at my.cnf under [mysqld] section
>
> ` ` ` ` `
> skip_external_locking
> skip_name_resolve
> skip_host_cach
>
> ` ` ` ` ` `
>
>
> The sql connection becomes little faster but still it is considerably
> slow; specially with such a muscular dedicated linx box just for Mysql.
> Is there anything else which I can add/configure to make the network latecy
> small or any such mechanism to make the query fast ?
>
> The server has very little load as observer from top and iostat
> even during peak hours.
>
> Thanks
>
>
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>
Hi

My 5 cents: :)

 * Do you have anything in your mysql's slow query log?
entries look like (see below) and can point you in the right
direction. As maybe is a SQL bad programming problem, lock between
tables, etc
.
# Wed Apr  4 13:08:27 2012
# Query_time: 1.494178  Lock_time: 0.00 Rows_sent: 0  Rows_examined: 0
use elsotani_X;
SET timestamp=1333566507;
CREATE TABLE IF NOT EXISTS `wp_translate_langs` (
`id` int(11) NOT NULL AUTO_INCREMENT,
`name` varchar(25) NOT NULL,
`main` tinyint(1) NOT NULL default 0,
`order` tinyint(1) NOT NULL default 0,
`icon` varchar(20) NOT NULL default '',
PRIMARY KEY  (`id`)
)

 * Is your DNS server responding quickly? Just a quick check.
add the IPs & server names to /etc/hosts in mysql server and clients
and see if performance is better. I have seen that you have
"skip_name_resolve" and  "skip_host_cache" parameters set, but this
solves (workaround) only the servers' side not the clients

 * Anything wrong in your apache's logs?

Keep us informed about your progresses.

I hope it helps :)

Best regards

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Re: [OT] sftp through authenticating proxy

[Juan Sierra Pons]

2012/3/23 Christopher Judd :
> Hi,
>
>
> Does anyone know of a way to establish an sftp connection through an
> authenticating proxy?
>
>
> -Chris
>
>
> 
>
> | Christopher Judd, Ph. D. |
>
> | Research Scientist III |
>
> | NYS Dept. of Health j...@wadsworth.org |
>
> | Wadsworth Center - ESP |
>
> | P. O. Box 509 518 486-7829 |
>
> | Albany, NY 12201-0509 |
>
> 
>
>
>
>
> IMPORTANT NOTICE: This e-mail and any attachments may contain
> confidential or sensitive information which is, or may be, legally
> privileged or otherwise protected by law from further disclosure. It
> is intended only for the addressee. If you received this in error or
> from someone who was not authorized to send it to you, please do not
> distribute, copy or use it or any attachments. Please notify the
> sender immediately by reply e-mail and delete this from your
> system. Thank you for your cooperation.

Hi

You can trying setting the variable http_proxy like

export http_proxy=http://username:password@proxy:8080/

Then add a the following two lines for each host you wanna access
through the proxy in the ~/.ssh/config file:
Host host1.dyndns.org
ProxyCommand connect-proxy -H proxy:8080 %h 22

If you have to use a isa proxy (ntl authentication) you can pass
through using the ntlmaps package. In this case is a bit different:

1.- install and configure the ntlmaps package (there are many tutorials online)
2.- set the variable http_proxy like
   export http_proxy=http://localhost:5865
3.- Then add a the following two lines for each host you wanna access
through the proxy in the ~/.ssh/config file:
Host host1.dyndns.org
ProxyCommand connect-proxy -H localhost:5865 %h 22

Is all the steps are ok you will be able to launch a ssh session
against the host1.dyndns.org through the proxy so in theory you will
be able sftp the remote server.

I hope it helps

Best regards

Juan

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Re: ssh tunnel

[Juan Sierra Pons]

2012/3/22 vicky mhe :
> Dear debian
>
> i use ssh for tunnel this is my command
>
> ssh -l vicky -L :192.168.21.2:22 118.97.247.242 18.97.xx.xx
> password:
> Segmentation fault
>
> in my syslog/messeges
>
> ernel: [  112.994103] ssh[2487]: segfault at b7e62000 ip b75d20cd sp
> bfbf5b3c error 4 in libcrypto.so.1.0.0[b7569000+1a3000]
>
> Best regard
> vicky

Hi,

Can you run the same command but in verbose  mode?

ssh -l vicky -L :192.168.21.2:22 118.97.247.242 18.97.xx.xx -vv

Pay attention to the -vv option -^

Best regards

------
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Re: wget/curl cannot work on debian amd64

[Juan Sierra Pons]

2012/3/21 严海东 :
> Dear all:
>         I have a problem with using wget and curl on debian amd64
>         when I type a command -- wget www.XXX.com, error messages
> will display as below:
>         --2012-03-21 14:43:43--  http://www.XXX.com/
>         Resolving 10 (10)... 0.0.0.10
>         Connecting to 10 (10)|0.0.0.10|:8080... failed: Invalid argument
>
>        when I type curl command--curl www.XXX.com, error messages
> will display as below:
>
>        curl: (7) Failed to connect to 0.0.0.10: Invalid argument
>
>        Does anyone have any ideas to solve it ?
>
>        BR!
>
>
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>

Hi,

I think the problem cause can be seen in the following line:

>Connecting to 10 (10)|0.0.0.10|:8080... failed: Invalid argument

The wget command tries to connect to a proxy located in 0.0.0.10. And
this is a bizarre IP address to me

Define the http_proxy=your_proxy_ip_address:port variable, then
execute the wget command again and see what happens

Best regards,

------
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Re: Question about ssh passwords and backup software

[Juan Sierra Pons]

2012/2/13 Paul E Condon :
> I am researching ways of setting up an automatic backup of
> my several local hosts (read computers in ancient UNIX parlance).
>
> My research has not been exhaustive, but it seems that the backup
> packages that offer backup of one host by another host all involve
> creating a special ssh password for the purpose that is not encripted
> and therefore does not need to be decripted for use. Advice varies as
> to how dangerous this is for security, but there is universal
> consensus that caution should be exercised.
>
> I have discovered an alternative to a passwordless private ssh key in
> the Debian package repository. (Not a great feat for a normal Debian
> user, but I am specially challenged.) The package in question is
> 'sshpass'. It allows one to write a script that feeds a password to
> the system that needs on. And, of course, the password is hidden
> somewhere on the using host in ways that can be questioned.
>
> I want to hear expressions of opinion as to the relative merits of
> having a password hidden somewhere vs. simply having no password on
> the private ssh key. I know there is risk in both and both ways have
> risks, but has anyone compared to two approaches and then decided to
> go one way or the other based on something more than a gut feeling? If
> so, what did you decide, and what were the risk factors that were
> important to you?
>
> If any of you feel that your position on this issue in not an opinion,
> but a fact that is beyond argument, your response is also welcome.
>
> TIA
> --
> Paul E Condon
> pecon...@mesanetworks.net
>
>
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>
Hello Paul,

Several months ago I wrote a small tutorial "Backing up a cpanel
hosting account" [1] on this subject.

Here you are the index:

1.- Crontab for automatic backups.
2.- Public/private keys for passwordless ssh connections. (but still
safe using keychain)
3.- Mysqldump for dumping the MySQL databases to a local file.
4.- Rsync command for synchronizing directories between remote and
local servers. This way bandwidth is reduced as if a file has already
been copied to the local server no data transfer is needed.
5.- SpiderOak for data deduplication and remote backup.

The key for keeping your password safe is the tool keychain. Have a
look to the "Passwordless connections via OpenSSH using public key
authentication, keychain and AgentForward." webpage [2]

"
This page collects into one place the essential steps needed to
generate a private/public key pair and use ssh to connect to remote
hosts without having to enter your password or passphrase more than
once per boot of your trusted workstation.
"

[1] http://www.elsotanillo.net/2011/09/backing-up-a-cpanel-hosting-account/
[2] 
http://oceanpark.com/notes/howto_ssh_keychain_public_key_authentication_forwarding.html

Best regards

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Re: using a bluetooth headset

[Juan Sierra Pons]

2012/2/14 Pierre Frenkiel :
> hi
> I'm  trying to use a bluetooth headset, and curiously, it works only
> for Skype(at least for the speaker, not for the microphone),
> and not for any other program.
> According what I found in a forum. I put in .asoundrc.asoundconf
>
>   pcm.bluetooth {
>       type plug
>       slave {
>           pcm "bluetooth_hw"
>       }
>   }
>
>   pcm.bluetooth_hw {
>         type bluetooth
>         device 00:0C:55:57:AC:23
>         profile "auto"
>   }
>
> but alsa still sends the sound to my PC speakers.
> I checked that Alsa actually uses this .asoundrc.asoundconf file, as it
> works
> for my other sound device (a wireless speaker)
>
> How come that Skype is the only program which sees all my sound devices?
>
> --
> Pierre Frenkiel
>
>
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>

Hi,

Are you using pulseaudio?

In this case use pavucontrol. I had the same problem and I could
configure it using this tool.

PAVUCONTROL(1)
 PAVUCONTROL(1)

NAME
   pavucontrol - A volume control for the PulseAudio sound server

SYNOPSIS
   pavucontrol

DESCRIPTION
   A simple volume control tool (mixer) for the PulseAudio sound
server. In contrast to classic mixer tools this one
   allows you to control both the volume of hardware devices and
of each playback stream separately. It also allows
   you to redirect a playback stream to another output device
without interrupting playback.

Hope it helps.

Best regards

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Re: how to check the server can be connected or not

[Juan Sierra Pons]

2012/2/3 lina :
> Hi,
>
> a server is closed, but will start in future, sooner or later,
>
> I wish to access in the first time it's open.
>
> I tried:
>
> while ( ssh server )
> do
> sleep 60
> done
>
> wall < server_open.txt
>
> actually I don't know how to write the while part,
>
> thanks for suggestions,
>
> Best regards,
>
>
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>

Hi,

My 5 cents:

watch -n 60 ssh your server

watch will try to ssh your server every 60 sec.

If the ssh daemon is up and running you will get the password prompt
If it is nor you will get an error message

Best Regards

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Re: wget y javascript

[Juan Sierra Pons]

El día 6 de enero de 2012 07:49, rantis cares  escribió:
> Listeros:
>
> Espero que esten comenzando bien este año 2012.
>
> ¿Existe alguna manera de descargar archivos pdf de una web, que son
> filtrados mediante javascript?.
>
> Antecedentes:
>
> Anteriormente entraba yo a una web en donde estaban alojados unos pdfs
> (miles). Logre bajarlos con wget, sin embargo (yo creo que se dieron
> cuenta de lo que hice) y cambiaron su manera de mostrar dichos
> archivos. Ahora no estan a la vista y para acceder a ellos solo lo
> puedo hacer mediante el explorador y dando clicks para descargarlos.
>
> Wget ya no funciona para esto, he revisado algunos post y confirman lo
> que yo temia.
>
> ¿Alguna idea para hacer descargarmelas de modo automatico?.
>
> Gracias
>
> --
> "Al juntarme dia tras dia con los Listeros, mi capacidad intelectual
> crece en proporcion inversa a la ignorancia generada. Gracias
> Linuxeros"
>
>
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>
Hola

Alguna vez que me he encontrado en una situación parecida y no me ha
quedado mas remedio que "parsear" codigo:

1.-leer el html+javascript
2.-buscar un patron del nombre del fichero que quieres descargar
3.-Una vez localizado el patron generarlo desde fuera, por ejemplo con
un script hecho en Bash, Python, Perl, etc
4.-Lanzar el wget con la ruta generada en el punto anterior

Sin ver la pagina es difícil contestarte algo mas especifico.

Salu2

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Re: [SOLVED] RTL8111/8168B wake on lan (WOL) working randomly

[Juan Sierra Pons]

2012/1/3 Janek Lapka :
> Juan Sierra Pons  writes:
>
>>lspci -v
>>
>>02:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd.
>  ^^ The 2 digit at the beginning of the line means the pci bus
>
>
>
> More info:
> http://www.thinkwiki.org/wiki/WakeOnLAN
> or google: pci-config wol
>
>> The problem is that when I shutdown the computer the NIC is switched
>> off too. I can see it as the port in my home ADSL router is switched
>> off. BUT randomly I can see that the NIC is not switched off after a
>> shutdown and if I send the WOL packet from another computer it works
>> like a charm.
>
> Use pci-config (apt-get install nictools-pci) to put the nic into
> sleep mode
>
> (part of my /etc/network/interfaces)
> #              pci-config -B 4 -#1
> # gigabyte p35c-ds3r pci bus ^   ^ device number
> # The primary network interface
> allow-hotplug eth0
> iface eth0 inet static
>        address 192.168.1.2
>        netmask 255.255.255.0
>        network 192.168.1.0
>        broadcast 192.168.1.255
>        gateway 192.168.1.1
>        # wol gigabyte p35c-ds3r (on asus p5b I don't need this)
>        #pre-up pci-config -W -B 4 -#1 # I don't use
>        #pre-up pci-config -B 4 -#1 # I don't use
>        pre-down pci-config -S -B 4 -#1 # Put device to sleep (ACPI D3)
>        pre-down pci-config -B 4 -#1 # Show the current status
>
>
>
> Also, if you share the drive with MS-Windows it may change the status of
> the driver.
>
>
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>

Hi all,

Finally Janek pointed me in the right direction: nictools-pci package
and the pci-config command

I tried the pre-down directive in the /etc/network/interfaces and it
worked ok but the second or third time I rebooted my PC it got frozen
so I started to search the internet and I found a web [1]  explaining
how to use the pci-config

I've make it work using the following procedure:

lspci -nn |grep -i Ether

02:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd.
RTL8111/8168B PCI Express Gigabit Ethernet controller [10ec:8168] (rev
01)
^^ The 2 digit at the beginning of the line means the pci bus (As
explained by Janek)
 ^  ^ this is the vendor:model number


Then:

pci-config -B 2
pci-config.c:v2.05 2/23/2005 Donald Becker (bec...@scyld.com)
 http://www.scyld.com/diag/index.html
Device #1 at bus 2 device/function 0/0, 816810ec.
 ^-^  this
is tne model:vendor number the same as before BUT in different order

Now I know the BUS number (2) and device number (#1)

So I can use the pci-config to put the NIC in the proper state for WOL:

pci-config -B 2 -# 1 -S

Instead of using the pre-down directive in the /etc/network/interfaces
I choose the /etc/init.d/halt script as written in [1] and added the
following lines just before "halt -d -f $netdown $poweroff $hddown"

[...]
### http://lists.debian.org/debian-user/2012/01/msg00182.html
### http://ubuntuforums.org/archive/index.php/t-951563.html
rmmod r8168
sleep 0.5
modprobe r8168
sleep 0.5
pci-config -B 2 -# 1 -S
sleep 0.5

log_action_msg "Will now halt"
halt -d -f $netdown $poweroff $hddown
[...]

I have restarted my PC at least 10 times and it works without problem.

[1] http://ubuntuforums.org/archive/index.php/t-951563.html


Thank you guys for your time!!

Best regards

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RTL8111/8168B wake on lan (WOL) working randomly

[Juan Sierra Pons]

Dear all,

I have been spending many  days trying to make my computer start using
the with wake on lan (WOL) feature.

My PC has a "Ethernet controller: Realtek Semiconductor Co., Ltd.
RTL8111/8168B PCI Express Gigabit Ethernet controller (rev 01)"
integrated NIC

lspci -v

02:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd.
RTL8111/8168B PCI Express Gigabit Ethernet controller (rev 01)
Subsystem: ASUSTeK Computer Inc. P5B
Flags: bus master, fast devsel, latency 0, IRQ 41
I/O ports at dc00 [size=256]
Memory at fdfff000 (64-bit, non-prefetchable) [size=4K]
[virtual] Expansion ROM at fdd0 [disabled] [size=128K]
Capabilities: [40] Power Management version 2
Capabilities: [48] Vital Product Data
Capabilities: [50] MSI: Enable+ Count=1/2 Maskable- 64bit+
Capabilities: [60] Express Endpoint, MSI 00
Capabilities: [84] Vendor Specific Information: Len=4c 
Capabilities: [100] Advanced Error Reporting
Capabilities: [12c] Virtual Channel
Capabilities: [148] Device Serial Number 1a-00-00-00-10-ec-81-68
Capabilities: [154] Power Budgeting 
Kernel driver in use: r8168

I have found on many mailing lists, forums that it is necessary the
r8168 module to make it works as by default Debian wheezy uses the
r8169 so I have installed the newest r8168 module from
http://code.google.com/p/r8168/

For example:
http://djlab.com/2010/10/fixing-rtl8111-8168b-driver-debian-ubuntu/comment-page-1/

The problem is that when I shutdown the computer the NIC is switched
off too. I can see it as the port in my home ADSL router is switched
off. BUT randomly I can see that the NIC is not switched off after a
shutdown and if I send the WOL packet from another computer it works
like a charm.

I have already checked the following:

* My computer uses the right module as i have blacklisted the r8169:

more /etc/modprobe.d/blacklist-network.conf
blacklist r8169

* I am using the last module version:

ethtool -i eth0
driver: r8168
version: 8.027.00-NAPI
firmware-version:
bus-info: :02:00.0
supports-statistics: yes
supports-test: no
supports-eeprom-access: yes
supports-register-dump: yes

* NIC has the WOL feature enabled (Wake-on: g)

root@mediacenter:/etc# ethtool eth0

Settings for eth0:
Supported ports: [ TP ]
Supported link modes:   10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Full
Supported pause frame use: No
Supports auto-negotiation: Yes
Advertised link modes:  10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Full
Advertised pause frame use: No
Advertised auto-negotiation: Yes
Speed: 100Mb/s
Duplex: Full
Port: Twisted Pair
PHYAD: 0
Transceiver: internal
Auto-negotiation: on
MDI-X: Unknown
Supports Wake-on: pumbg
Wake-on: g
Current message level: 0x0033 (51)
   drv probe ifdown ifup
Link detected: yes

* I have already modified the /etc/init.d/halt script with NETDOWN=no
to do not switch off the NIC
[]
NETDOWN=no
[]
# Make it possible to not shut down network interfaces,
# needed to use wake-on-lan
netdown="-i"
if [ "$NETDOWN" = "no" ]; then
netdown=""
fi
[]

I can not see any pattern as it works around 10-20% of the times I
shutdown the computer locally, remotely or from the poweroff button.

Thanks a log for your time.

Best regards

Juan Sierra Pons

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Re: OEM Install

[Juan Sierra Pons]

2011/12/13 Dave Higgins :
> That's close, but it would appear that if I were to put the vm image on
> a DVD and take it elsewhere, this wouldn't help.
>
> Ubuntu has/had the OEM install.  Can that be ported to Debian?
>
> On 12/13/2011 11:46 AM, Andrei Popescu wrote:
>> On Ma, 13 dec 11, 11:33:28, Dave Higgins wrote:
>>> Is there a way to install a server installation to be an OEM
>>> installation.  For example, I'm going to start to have many VM instances
>>> of Debian and it would be a more simple task to install it once, OEM it,
>>> and then copy the VM image then to do an install over and over again.
>>> These VMs will basically be the same and adding packages is rather
>>> simple if I need to.
>>
>> Have a look at FAI (fai-project.org)
>>
>> Kind regards,
>> Andrei
>
> --
>
> --
> No virii here...
>
>
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>

Hi,

I had a similar problem time ago and this is the way I solved:

http://www.elsotanillo.net/2011/08/debian-templates-disk-images-qemukvm-for-libvirt/
  ;P

I hope it helps

Best regards

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Re: Very slow usb access

[Juan Sierra Pons]

2011/11/22 George :
> I'm running stable. Ever since squeeze was installed, usb devices are
> auto-mounted on my machine. However, access to them is extremely slow.
> I assume they are running on USB 1 mode or something like that. Is
> there a way to fix this?
>
>
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>
>

Hi,

Do you see something wrong in the logs?
Do you have other application accessing the USB device on the same
time? maybe some indexing software like beagle daemon, etc
Does it happens with all your devices?

We need more information to help you

Best regards

Juan
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Re: StorCenter ix2-200 Network Storage over open-iscsi package.

[Juan Sierra Pons]

2011/10/4 Joey L :
> yes..on all counts - i have been trying different methods of
> connecting - but same error.
> It seems like it does not clean up past configurations and it is not
> unloading drivers properly.
> when i stop the service - i still see it in ps -aux ---regarding the
> iscsi module/service.
> I need to know the following as well as anything you can think of :
>
> 1. Is there anything you know how i can clean up past loads ??
>
> 2. any debug mode you can think of on debian ??
>
> 3. there is a major iscsi.conf file for info and then there is the
> individual device file under the node directory -- which one is it
> reading  which one should i modify ???
>
> thanks
> mjh
>
>
> On Tue, Oct 4, 2011 at 11:39 AM, Juan Sierra Pons  
> wrote:
>> 2011/10/4 Joey L :
>>> sorry -- this is the error i get when i restart /etc/init.d/open-iscsi :
>>>
>>> Logging in to [iface: default, target:
>>> iqn.1992-04.com.emc:storage.mjhstg.iscsi, portal: 10.168.2.57,3260]
>>> iscsiadm: Could not login to [iface: default, target:
>>> iqn.1992-04.com.emc:storage.mjhstg.iscsi, portal: 10.168.2.57,3260]:
>>> iscsiadm: initiator reported error (15 - already exists)
>>> iscsiadm: Could not log into all portals. Err 15.
>>>
>>>
>>> On Tue, Oct 4, 2011 at 10:40 AM, Joey L  wrote:
>>>> I am getting a strange error with the open-iscsi package on debian
>>>> using nas StorCenter ix2-200 Network Storage.
>>>>
>>>> I think i setup the device correctly following this:
>>>> iscsiadm -m node -T iqn.1992-04.com.emc:storage.xxxstg.iscsi -p
>>>> 10.168.2.57 --op update -n node.session.auth.username -v admin
>>>> iscsiadm -m node -T iqn.1992-04.com.emc:storage.xxxstg.iscsi -p
>>>> 10.168.2.57 --op update -n node.session.auth.password -v adminadmin
>>>>
>>>>  iscsiadm -m node -T iqn.1992-04.com.emc:storage.xxxstg.iscsi -p
>>>> 10.168.2.57 --op update -n node.startup -v automatic
>>>>
>>>>
>>>> iscsiadm -m discovery -t sendtargets -p 10.168.2.57:3260
>>>> 10.168.2.57:3260,1 iqn.1992-04.com.emc:storage.xxxstg.iscsi
>>>>
>>>>
>>>> when i execute this command:
>>>> iscsiadm -m node -T iqn.1992-04.com.emc:storage.xxxstg.iscsi -p 
>>>> 10.168.2.57 -l
>>>>
>>>> I get error:
>>>>
>>>>
>>>> Oct  4 10:34:07 rider iscsid: iSCSI logger with pid=30766 started!
>>>> Oct  4 10:34:07 rider iscsid: transport class version 2.0-870. iscsid
>>>> version 2.0-871
>>>> Oct  4 10:34:07 rider iscsid: iSCSI daemon with pid=30767 started!
>>>> Oct  4 10:34:08 rider iscsid: could not read session targetname: 5
>>>> Oct  4 10:34:08 rider iscsid: could not find session info for session1
>>>> Oct  4 10:34:08 rider iscsid: could not read session targetname: 5
>>>> Oct  4 10:34:08 rider iscsid: could not find session info for session1
>>>> Oct  4 10:34:08 rider iscsid: session
>>>> [iqn.1992-04.com.emc:storage.mjhstg.iscsi,10.168.2.57,3260] already
>>>> running.
>>>>
>>>
>>>
>>> --
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>>> am-q_xlz8z2rwk9jeosxw4jt4jaj...@mail.gmail.com
>>>
>>>
>>
>> Hi
>>
>> This seems a authentication error for me:
>>
>> Logging in to [iface: default, target:
>> iqn.1992-04.com.emc:storage.mjhstg.iscsi, portal: 10.168.2.57,3260]
>> iscsiadm: Could not login to [iface: default, target:
>> iqn.1992-04.com.emc:storage.mjhstg.iscsi, portal: 10.168.2.57,3260]:
>> iscsiadm: initiator reported error (15 - already exists)
>> iscsiadm: Could not log into all portals. Err 15.
>>
>>
>> Are you sure the password is right in the configuration file?
>>
>> node.session.auth.username = user
>> node.session.auth.password = password
>>
>> And the authentication method? Are you using the same in both sides
>> initiator and target?
>>
>> node.session.auth.authmethod = CHAP
>>
>> Best regards
>>
>> Juan
>>
>> --
>> Juan Sierra Pons                                 j...@elsotanillo.net
>> Linux User Registered: #257202       http://www.elsotanil

Re: StorCenter ix2-200 Network Storage over open-iscsi package.

[Juan Sierra Pons]

2011/10/4 Joey L :
> sorry -- this is the error i get when i restart /etc/init.d/open-iscsi :
>
> Logging in to [iface: default, target:
> iqn.1992-04.com.emc:storage.mjhstg.iscsi, portal: 10.168.2.57,3260]
> iscsiadm: Could not login to [iface: default, target:
> iqn.1992-04.com.emc:storage.mjhstg.iscsi, portal: 10.168.2.57,3260]:
> iscsiadm: initiator reported error (15 - already exists)
> iscsiadm: Could not log into all portals. Err 15.
>
>
> On Tue, Oct 4, 2011 at 10:40 AM, Joey L  wrote:
>> I am getting a strange error with the open-iscsi package on debian
>> using nas StorCenter ix2-200 Network Storage.
>>
>> I think i setup the device correctly following this:
>> iscsiadm -m node -T iqn.1992-04.com.emc:storage.xxxstg.iscsi -p
>> 10.168.2.57 --op update -n node.session.auth.username -v admin
>> iscsiadm -m node -T iqn.1992-04.com.emc:storage.xxxstg.iscsi -p
>> 10.168.2.57 --op update -n node.session.auth.password -v adminadmin
>>
>>  iscsiadm -m node -T iqn.1992-04.com.emc:storage.xxxstg.iscsi -p
>> 10.168.2.57 --op update -n node.startup -v automatic
>>
>>
>> iscsiadm -m discovery -t sendtargets -p 10.168.2.57:3260
>> 10.168.2.57:3260,1 iqn.1992-04.com.emc:storage.xxxstg.iscsi
>>
>>
>> when i execute this command:
>> iscsiadm -m node -T iqn.1992-04.com.emc:storage.xxxstg.iscsi -p 10.168.2.57 
>> -l
>>
>> I get error:
>>
>>
>> Oct  4 10:34:07 rider iscsid: iSCSI logger with pid=30766 started!
>> Oct  4 10:34:07 rider iscsid: transport class version 2.0-870. iscsid
>> version 2.0-871
>> Oct  4 10:34:07 rider iscsid: iSCSI daemon with pid=30767 started!
>> Oct  4 10:34:08 rider iscsid: could not read session targetname: 5
>> Oct  4 10:34:08 rider iscsid: could not find session info for session1
>> Oct  4 10:34:08 rider iscsid: could not read session targetname: 5
>> Oct  4 10:34:08 rider iscsid: could not find session info for session1
>> Oct  4 10:34:08 rider iscsid: session
>> [iqn.1992-04.com.emc:storage.mjhstg.iscsi,10.168.2.57,3260] already
>> running.
>>
>
>
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> am-q_xlz8z2rwk9jeosxw4jt4jaj...@mail.gmail.com
>
>

Hi

This seems a authentication error for me:

Logging in to [iface: default, target:
iqn.1992-04.com.emc:storage.mjhstg.iscsi, portal: 10.168.2.57,3260]
iscsiadm: Could not login to [iface: default, target:
iqn.1992-04.com.emc:storage.mjhstg.iscsi, portal: 10.168.2.57,3260]:
iscsiadm: initiator reported error (15 - already exists)
iscsiadm: Could not log into all portals. Err 15.


Are you sure the password is right in the configuration file?

node.session.auth.username = user
node.session.auth.password = password

And the authentication method? Are you using the same in both sides
initiator and target?

node.session.auth.authmethod = CHAP

Best regards

Juan

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Re: crontab mails to external smtp host

[Juan Sierra Pons]

Hi,

Yes, it can be done configuring Exim to send emails to external
domains using a smarthost.

1.- Configure properly /etc/aliases and add a default user to receive
emails. For example

# /etc/aliases
mailer-daemon: postmaster
postmaster: root
nobody: root
hostmaster: root
usenet: root
news: root
webmaster: root
www: root
ftp: root
abuse: root
noc: root
security: root
root: youruser
youruser; redalert.comman...@gmail.com

2.- Configure exim4 to send emails using a external smarthost. As I
can see you have a gmail account. I have the same configuration in my
servers.

Modify your update-exim4.conf.conf and update the dc_smarthost variable:
dc_smarthost='smtp.gmail.com::587'

Create the /etc/exim4/passwd.client with the right permission
-rw-r- 1 root Debian-exim   401 abr 21 21:20 passwd.client

And add the following:
# password file used when the local exim is authenticating to a remote
# host as a client.
#
# see exim4_passwd_client(5) for more documentation
#
# Example:
### target.mail.server.example:login:password
*.google.com:redalert.comman...@gmail.com:password
gmail-smtp.l.google.com:redalert.comman...@gmail.com:password
*.google.com:redalert.comman...@gmail.com:password
smtp.gmail.com:redalert.comman...@gmail.com:password

3.- Restart the exim4 daemon

Have fun!

Regards

Juan

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2011/9/18 Steven :
> Hi list,
>
> I manage several Debian servers (etch and squeeze), not related to one
> another, and they all have some crontab jobs scheduled such as backup
> scripts. When these cronjobs are run, the output is e-mailed to the
> local admin account on the system. Is it possible to configure these
> e-mails to be delivered to an external address over an external SMTP
> server instead of locally?
>
> All systems where I would want to do this run Squeeze and use exim4 in a
> default configuration as none of them are e-mail servers.
>
> Any help is appreciated.
>
> Kind regards,
> Steven
>


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Re: corporate firewall from an end user prospective

[Juan Sierra Pons]

Hi  T o n g,

The "best practice" is deny all ports and open only needed outgoing ports.
For a standard company only 80, 8080 for http and 443 for https should
be opened.

if you wanna know which outgoing ports are open you will need a
machine outside with some ports opened and make some try and error.

Quick & Dirty:
external.machine: nc -l 3000
internal.machine: nc external.machine 3000

And see if the socket is opened

Anyway if you wanna have ssh and ftp connection you can try to
tunnelling ssh over https and ftp over https. There are some good
howtos on this subject on the internet.  I personally wrote one,
written in "correct" Spanish:

http://www.elsotanillo.net/2006/08/howto-como-saltarse-un-proxy-para-establecer-conexiones-tunelizadas-a-traves-de-el-2/
 :-)

Good luck!

Regards

Juan

----------
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Linux User Registered: #257202    | http://www.elsotanillo.net
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2011/9/9 T o n g :
> Hi,
>
> The place that I work now block standard outbound ssh (and ftp) port
> connections. I'm wondering, for a "standard" corporate firewall practice,
> do they selectively block outbound ports, or do they selectively open
> them.
>
> >From an end user prospective, is there any way I can know which outbound
> port is not blocked that I can make use of?
>
> Thanks
>
> --
> Tong (remove underscore(s) to reply)
>  http://xpt.sourceforge.net/techdocs/
>  http://xpt.sourceforge.net/tools/
>
>
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>


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Re: how to examine ssh problem

[Juan Sierra Pons]

2011/8/2 lina :
> On Tue, Aug 2, 2011 at 11:24 PM, Joao Ferreira Gmail
>  wrote:
>> On Tue, 2011-08-02 at 23:02 +0800, lina wrote:
>>> Hi,
>>>
>>> when I tried to ssh some_server, it showed me,
>>>
>>> Permission denied (publickey,gssapi-with-mic,password).
>>>
>>> 1] I tried ssh from desktop, laptop and other server, the same problem.
>>> 2] I generate a new key  by ssh-keygen in some_server, it still has
>>> this problem.
>>>
>>> I can ssh by username@full_some_server_address, but can't access in a
>>> simple way,
>>
>> try:
>>
>> "ssh -vvv user@host"
>
> ...
> debug1: Found key in /home/lina/.ssh/known_hosts:3
> debug2: bits set: 529/1024
> debug1: ssh_rsa_verify: signature correct
> debug2: kex_derive_keys
> debug2: set_newkeys: mode 1
> debug1: SSH2_MSG_NEWKEYS sent
> debug1: expecting SSH2_MSG_NEWKEYS
> debug2: set_newkeys: mode 0
> debug1: SSH2_MSG_NEWKEYS received
> debug1: Roaming not allowed by server
> debug1: SSH2_MSG_SERVICE_REQUEST sent
> debug2: service_accept: ssh-userauth
> debug1: SSH2_MSG_SERVICE_ACCEPT received
> debug2: key: /home/lina/.ssh/id_rsa (0x7f9e47a530a0)
> debug2: key: /home/lina/.ssh/id_dsa (0x7f9e47a58660)
> debug1: Authentications that can continue: publickey,gssapi-with-mic,password
> debug3: start over, passed a different list publickey,gssapi-with-mic,password
> debug3: preferred publickey,keyboard-interactive
> debug3: authmethod_lookup publickey
> debug3: remaining preferred: keyboard-interactive
> debug3: authmethod_is_enabled publickey
> debug1: Next authentication method: publickey
> debug1: Offering public key: /home/lina/.ssh/id_rsa
> debug3: send_pubkey_test
> debug2: we sent a publickey packet, wait for reply
> debug1: Authentications that can continue: publickey,gssapi-with-mic,password
> debug1: Offering public key: /home/lina/.ssh/id_dsa
> debug3: send_pubkey_test
> debug2: we sent a publickey packet, wait for reply
> debug1: Authentications that can continue: publickey,gssapi-with-mic,password
> debug2: we did not send a packet, disable method
> debug1: No more authentication methods to try.
> Permission denied (publickey,gssapi-with-mic,password)
>
> I don't know how to check further, thanks for any more advice,
>
>>
>> Joao
>>
>>
>>>
>>> Thanks for any advice,
>>>
>>> --
>>> Best Regards,
>>>
>>> lina
>>>
>>>
>>
>>
>>
>
>
>
> --
> Best Regards,
>
> lina
>
>
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>
>
Hi,

Can you delete your public key in the remote server and copy it again using:

ssh-copy-id user@machine

This way ssh-copy-id will check the permissions on the remote server.

>From the man page

   ssh-copy-id  is a script that uses ssh to log into a remote
machine (presumably using a login password, so password
   authentication should be enabled, unless you've done some
clever use of multiple identities)

   It also changes the permissions of the remote user's home,
~/.ssh,  and  ~/.ssh/authorized_keys  to  remove  group
   writability  (which would otherwise prevent you from logging
in, if the remote sshd has StrictModes set in its con‐
   figuration).

Good luck


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Re: OT - stitching together 2 pdf files

[Juan Sierra Pons]

Pdftk is your tool

Man pdftk

El 12/07/2011 18:51, "AG"  escribió:

Hi all

Sorry for the OT, but does anyone know of a way to stitch 2 separate pdf
files together to make one large one?

I'm pretty sure acroread won't, but I was wondering about Xpdf or possibly a
command-line approach?

Thanks for any help.

Cheers

AG


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Re: mlocate db update disabled

[Juan Sierra Pons]

Hi.

Check anacron jobs.

/etc/cron.daily/*

Regards

El 11/07/2011 18:26, "T o n g"  escribió:

On Mon, 11 Jul 2011 12:22:06 -0400, Stephen Allen wrote:

>> All my boxes have mlocate working fine,...

> Are you sure it's even installed? I noticed on a few Ubuntu installs
> that it wasn't.
I believe so -- the mlocate command is there, just isn't able to find
files that've been there (for at least a week).



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Re: what program is running find that is taking up so much of my cpu time this morning?

[Juan Sierra Pons]

2011/7/8 Mitchell Laks :
>
> Dear Gurus,
>
> this morning my computer is very sluggish and top says find is running.
>
> I did
>
> ps aux|grep find
>
> with this output
>
> root     25307  0.0  0.0  11132   652 ?        SN   07:42   0:00 /bin/sh 
> /usr/bin/updatedb.findutils
> root     25315  0.0  0.0  11136   352 ?        SN   07:42   0:00 /bin/sh 
> /usr/bin/updatedb.findutils
> nobody   25342  0.0  0.0  56292   904 ?        SN   07:42   0:00 su nobody -s 
> /bin/sh -c /usr/bin/find / -ignore_readdir_race      \( -fstype NFS -o 
> -fstype nfs -o -fstype nfs4 -o -fstype afs -o -fstype binfmt_misc -o -fstype 
> proc -o -fstype smbfs -o -fstype autofs -o -fstype iso9660 -o -fstype ncpfs 
> -o -fstype coda -o -fstype devpts -o -fstype ftpfs -o -fstype devfs -o 
> -fstype mfs -o -fstype shfs -o -fstype sysfs -o -fstype cifs -o -fstype 
> lustre_lite -o -fstype tmpfs -o -fstype usbfs -o -fstype udf -o -fstype ocfs2 
> -o      -type d -regex 
> '\(^/tmp$\)\|\(^/usr/tmp$\)\|\(^/var/tmp$\)\|\(^/afs$\)\|\(^/amd$\)\|\(^/alex$\)\|\(^/var/spool$\)\|\(^/sfs$\)\|\(^/media$\)\|\(^/var/lib/schroot/mount$\)'
>  \) -prune -o -print0
> nobody   25354  3.6  0.0  13300  1340 ?        DN   07:42   0:17 
> /usr/bin/find / -ignore_readdir_race ( -fstype NFS -o -fstype nfs -o -fstype 
> nfs4 -o -fstype afs -o -fstype binfmt_misc -o -fstype proc -o -fstype smbfs 
> -o -fstype autofs -o -fstype iso9660 -o -fstype ncpfs -o -fstype coda -o 
> -fstype devpts -o -fstype ftpfs -o -fstype devfs -o -fstype mfs -o -fstype 
> shfs -o -fstype sysfs -o -fstype cifs -o -fstype lustre_lite -o -fstype tmpfs 
> -o -fstype usbfs -o -fstype udf -o -fstype ocfs2 -o -type d -regex 
> \(^/tmp$\)\|\(^/usr/tmp$\)\|\(^/var/tmp$\)\|\(^/afs$\)\|\(^/amd$\)\|\(^/alex$\)\|\(^/var/spool$\)\|\(^/sfs$\)\|\(^/media$\)\|\(^/var/lib/schroot/mount$\)
>  ) -prune -o -print0
>
>
> what utility is doing this find?
>
> thanks,
>
> Mitchell Laks
>
>
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Hi,

I think it is /etc/cron.daily/mlocate wichi internally runs updatedb -
"update a database for mlocate"

Check your /etc/cron.daily/mlocate.

This anacron job runs every day and update your mlocate database.

You can disable it or just move it to /etc/cron.weekly/ or
/etc/cron.monthly/ is up to you.

How many times do you use the mlocate command per day? :-p

Best regards

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Re: printing image full page

[Juan Sierra Pons]

Hi,

You can try with the convert command (from ImageMagick package) I used
this long time ago for scripting some faxes.

ImageMagick is a software suite to create, edit, and compose bitmap
 images. It can read, convert and write images in a variety of formats
 (over 100) including DPX, EXR, GIF, JPEG, JPEG-2000, PDF, PhotoCD, PNG,
 Postscript, SVG, and TIFF. Use ImageMagick to translate, flip, mirror,
 rotate, scale, shear and transform images, adjust image colors, apply
 various special effects, or draw text, lines, polygons, ellipses and
 Bézier curves. All manipulations can be achieved through shell commands as
 well as through an X11 graphical interface (display).

Enjoy it!

Best Regards


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2011/7/5 T o n g :
> Hi,
>
> I'm looking for a script-able way to print any arbitrary image onto a
> full printer page (letter, A4, etc).
>
> All the image viewing tools that I tried didn't give me such feature, and
> so far the only solution I have is, , , doing it in winword.
>
> Thanks
>
> --
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>  http://xpt.sourceforge.net/techdocs/
>  http://xpt.sourceforge.net/tools/
>
>
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Re: weird dhclient problem

[Juan Sierra Pons]

2011/6/30 wolf python london :
> Hey all,
>
>    I recently upgrade my Wheezy and Sid box, and find a weird problem about
>    dhclient(package:isc-dhcp-client ).
>
>    My boxes are in an intranet (my campus),so I want to access the stuff
>    in the intranet (ftp and http). The intranet has its own dhcp server,
>    so we can get an ip and netmask by dhclient. In my squeeze box ,
>    $dhclient eth0
>    is fine , I can then acess the ftp and http servers in the intranet.
>    But in my Wheezy and Sid boxes, it's sucks. Here is my
>    /etc/network/interfaces:
>
>    wolf@wheezy:~$ cat /etc/network/interfaces
>    # This file describes the network interfaces available on your system
>    # and how to activate them. For more information, see interfaces(5).
>
>    # The loopback network interface
>    auto lo
>    iface lo inet loopback
>
>    # The primary network interface
>    allow-hotplug eth0
>    #NetworkManager#iface eth0 inet dhcp
>
>    iface dsl-provider inet ppp
>    pre-up /sbin/ifconfig eth0 up # line maintained by pppoeconf
>    provider dsl-provider
>    iface eth0 inet dhcp
>
>    As you can see, the last line "iface eth0 inet dhcp" means I can
>    get an ip via ifupdown and still use the dhcp to configure eth0.
>    #ifdown eth0;ifup eth0
>    Ok, its fine,ping other hosts(for example 10.20.79.1) in the
> intranet is ok .
>    I paste the process here (http://pastie.org/2142558)
>    I cannot figure it out why the dhclient command failed though it
>    actually get and ip and netmask and the route are even the same, while
>    ifupdown is ok  ?
>
>
>    thanks all!
>
>
> --
> 
> Yes, I use Debian GNU/L
> wolf python london(WPL)
> Do as you soul should do !
> 
>
>
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>

Hi,

Do you have NetworkManager installed? if so please de-install it as it
has weird behaviour some times. :-(

Can you provide the arp (arp -a) table too in both cases. Like you did
in http://pastie.org/2142558

But I think the real problem is that the right lines in your
/etc/network/interfaces must look like:
# The primary network interface
auto eth0
iface eth0 inet dhcp

Please add the "auto eth0" line

Best regards

Juan
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Re: searching through open-/libreoffice documents

[Juan Sierra Pons]

or you can use zgrep

zgrep - search possibly compressed files for a regular expression

Best regards

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2011/6/16 Juan Sierra Pons :
> Hi
>
> Google is your friend :P
>
> http://forums.opensuse.org/archives/sf-archives/archives-programming-scripting/337622-using-grep-openoffice-files.html
>
> "
> The openoffice file (something.odt) is a zip file with a collection of
> files that make up the document inside. One of these files is a .XML
> file called contents.xml that contains the actual text of your
> document.
> "
>
> You can create un script to unzip the file and then "grep" the xml content
>
> Best regards
>
> Juan
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> 
>
>
> 2011/6/16 lee :
>> Hi,
>>
>> when I have a collection of documents created with
>> openoffice/libreoffice writer and want to search through them for
>> strings contained in the text, how do I do that? Is there some
>> equivalent for grep that works on such files?
>>
>>
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>>
>


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Re: searching through open-/libreoffice documents

[Juan Sierra Pons]

Hi

Google is your friend :P

http://forums.opensuse.org/archives/sf-archives/archives-programming-scripting/337622-using-grep-openoffice-files.html

"
The openoffice file (something.odt) is a zip file with a collection of
files that make up the document inside. One of these files is a .XML
file called contents.xml that contains the actual text of your
document.
"

You can create un script to unzip the file and then "grep" the xml content

Best regards

Juan
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2011/6/16 lee :
> Hi,
>
> when I have a collection of documents created with
> openoffice/libreoffice writer and want to search through them for
> strings contained in the text, how do I do that? Is there some
> equivalent for grep that works on such files?
>
>
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>


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Re: Cannot connect to localhost:631

[Juan Sierra Pons]

Are you having problems with others ports/services?

What "nmap localhost" says?

Best Regards



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2011/6/15 Wayne Topa :
> On 06/15/2011 07:38 AM, AG wrote:
>>
>> On Wheezy, I have lost the capability of connecting to the CUPS server
>> via the web-page using localhost:631. The error message is "cannot
>> connect: connection to the server refused".
>>
>> I have double-checked /etc/hosts and that seems fine, checking the Net
>> for help throws up suggestions on changing a setting in cupsd.conf but
>> the only cupsd.conf file I can find on my system is a binary file in
>> /var/sbin. I also tried system-config-printer but that didn't help.
>>
>> I have restarted the CUPS server and can print okay ... just cannot
>> connect to the server.
>>
>> Anything else that I can try?
>
> Is localhost allowed in /etc/hosys.allow?
>
>
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Re: Cannot connect to localhost:631

[Juan Sierra Pons]

Hi

Is cups daemon running?
What's on cups logs?

Best regards

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2011/6/15 AG :
> On Wheezy, I have lost the capability of connecting to the CUPS server via
> the web-page using localhost:631.  The error message is "cannot connect:
> connection to the server refused".
>
> I have double-checked /etc/hosts and that seems fine, checking the Net for
> help throws up suggestions on changing a setting in cupsd.conf but the only
> cupsd.conf file I can find on my system is a binary file in /var/sbin.  I
> also tried system-config-printer but that didn't help.
>
> I have restarted the CUPS server and can print okay ... just cannot connect
> to the server.
>
> Anything else that I can try?
>
> Cheers
>
> AG
>
>
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Re: Desktop performance problem

[Juan Sierra Pons]

Can you make some test with hdparm in both disks (to see disk performance)?

I think the problem can be located in the I/O disk part as it happens
when copying data (or rsnapshot is running) from two differents disks

Another test you can do is copyin data using ionice (with differents
options: "Best effort" or "idle")

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2011/6/14 Aniruddha :
> On Tue, Jun 14, 2011 at 5:00 PM, Glen Batchelor  
> wrote:
>>
>>
>>  Which kernel are you using?  'uname -r'
>>  Which desktop system are you using?
>
> Here's some additional information:
>
> $ uname -r
> 2.6.38-2-amd64
>
> I use a  minimal gnome desktop (no file indexing service). For testing
> purposes I use the command line; cp -r  /var/lib/libvirt/images to be
> precise. I copy from one internal disk to another,
>
> I also encounter this problem every time rsnapshot is running. My
> system slows down noticeably  and I use top/htop to discover rsnaphot
> is running.
>
>
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Re: Desktop performance problem

[Juan Sierra Pons]

Hi,

Are you using  Nepomuk, beagled or another similar daemon? those
"guys" can affect your system desktop performance.
As GlenB says kernel and desktop version are a very useful information too

Best Regards

Juan
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2011/6/14 Glen Batchelor :
>
>
>  Which kernel are you using?  'uname -r'
>  Which desktop system are you using?
>
>
> GlenB
>
>> -Original Message-
>> From: Aniruddha [mailto:mailingdotl...@gmail.com]
>> Sent: Tuesday, June 14, 2011 10:51 AM
>> To: debian-user@lists.debian.org
>> Subject: Re: Desktop performance problem
>>
>> On Tue, Jun 14, 2011 at 4:24 PM, Juan Sierra Pons 
>> wrote:
>> > Hi
>> >
>> > This can be an I/O and/or CPU problem
>> > As a workaround you can use:
>> > - ionice - get/set program io scheduling class and priority  for I/O
>> problem
>> > - nice - run a program with modified scheduling priority for CPU problem
>> >
>> > To adjust scheduling priority of the offending process.
>>
>> Thanks for help! When I monitor with htop there are no processes above
>> 5% during unpacking/copying.  I have fairly fast hardware ( Intel Core
>> i7-2600, 8 GB DDR3, samsung 7200 rpm), which shouldn't be the problem
>> especially since the same hardware  works fine in Funtoo. I suspect
>> that the problem is that Debian (kernel) configuration is optimized
>> for servers not desktop. I'm interested to learn which (kernel)
>> options need to be changed in order to increase performance in Debian.
>> I have no interesting messages in the logs, is there additional
>> information I can provide?
>>
>>
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Re: Desktop performance problem

[Juan Sierra Pons]

Hi

This can be an I/O and/or CPU problem
As a workaround you can use:
- ionice - get/set program io scheduling class and priority  for I/O problem
- nice - run a program with modified scheduling priority for CPU problem

To adjust scheduling priority of the offending process.

Good luck in you quest :)

Best regards

P.S: Provide more information (logs, dmesg, hdparm test, etc) to help
us to help you

Juan
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2011/6/14 Aniruddha :
> I've noticed that my Debian testing desktop slows downs significantly
> when copying (and unpacking) large files. Sound stutters and iceweasel
> (and other programs) freeze regularly. This makes working on my
> desktop impossible when copying or unpacking large files, This
> happened on all my Debian desktops, on different hardware and on
> stable, testing and sid. I have also Funtoo installed, Funtoo remains
> responsive during the same operations. Therefor I suspect it must be
> an configuration problem.
>
> Is there an (kernel)option that need to be changed to increase
> performance? Thus far I have tried changing Preemption Model and Timer
> frequency without noticeable results. Thanks in advance!
>
>
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