Technobounce

Spiffy sed command to clean up conf files

Jeff Dickison — Thu, 16 Jul 2009 21:27:21 GMT

Use the following sed command to clean up config files and remove all the comments and blank lines:

sed '/ *#/d; /^ *$/d'

Setting up PAM with Debian lenny and a BlackBerry Curve 8330, the easy way!

Jeff Dickison — Fri, 20 Feb 2009 07:45:09 GMT

I got a BlackBerry 8330 a little while ago and decided I'd figure out how to get PAM working. Like most things I like to do things the manual way, this way I know exactly whats going on. So to start you may need to 'apt-get install bluez-utils build-essential ppp ' to get everything you need.

in /etc/bluetooth/hcid.conf:
options {
autoinit yes;
security auto;
pairing multi;
passkey "1234";
}
device {
name "mylaptop";
class 0x000100;
iscan enable; pscan enable;
lm accept, master;
lp rswitch,hold,sniff,park;
}

and in /etc/bluetooth/pin
PIN:1234

next go to /usr/share/doc/bluez-utils/examples and run:
make
cp passkey-agent /usr/local/bin/

run that :
passkey-agent 1234

change the pin and passkey to what ever you want to use
now, restart bluetooth

/etc/init.d/bluetooth restart

find the bb:
hcitool scan

that should give you a list of devices, then run ( replace 00:11:22:33:44:55 with your BB hardware address ) :
sdptool browse 00:11:22:33:44:55

your blackberry should ask for your pin then once you have paired, run
sdptool search DUN
(note which channel its on)

next edit /etc/bluetooth/rfcomm.conf :

rfcomm1 {
bind yes;
device 00:11:22:33:44:55;
channel 3;
comment �Bluetooth BB Connection�;
}

and in /etc/ppp/peers/blackberry:
debug debug debug
nodetach
/dev/rfcomm1
115200
connect "/usr/sbin/chat -f /etc/chatscripts/blackberry"
nomultilink
defaultroute
noipdefault
ipcp-restart 7
ipcp-accept-local
ipcp-accept-remote
# need lcp-echo turned off, at least for t-mobile
# disconnects after few mn of inactivity.
# thanks to 'loon' for this info
lcp-echo-interval 0
lcp-echo-failure 999
modem
noauth
nocrtscts
noipdefault
novj # refused anyway, no point in trying every time
usepeerdns
user ""
password ""

and edit /etc/chatscripts/blackberry:

ABORT BUSY ABORT 'NO CARRIER' ABORT VOICE ABORT 'NO DIALTONE' ABORT \
'NO DIAL TONE' ABORT 'NO ANSWER' ABORT DELAYED ABORT ERROR
SAY "Initializing\n"
'' ATZ
OK-AT-OK ATDT#777
CONNECT \d\c

then we can now:
pppd call blackberry

and it should be up and running !

That was easy huh?

Xen + lvm on Dell PowerEdge 2950 with Debian 4.0r3 AMD64

Jeff Dickison — Wed, 19 Mar 2008 23:52:00 GMT

There are a couple things to watch out with this install. When installing the system, the installer switches eth0 and eth1 and also detects the first drive as /dev/sdb not /dev/sda. This requires you to edit the grub conf at boot and switch sdb with sda. That will allow the system to boot up properly, but /etc/fstab is still incorrect and needs to fixed as well.

For this install I broke the existing virtual disks on the raid and created a 10G disk for the system and created a second virtual disk with the remaining space allocated for xen servers.

Create a 3T lvm partition:
myxenserver:~# fdisk -l /dev/sdb

Disk /dev/sdb: 3737.2 GB, 3737292636160 bytes
255 heads, 63 sectors/track, 454366 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

Device Boot Start End Blocks Id System
myxenserver:~# parted /dev/sdb mklabel gpt
Information: Don't forget to update /etc/fstab, if necessary.

myxenserver:~# parted /dev/sdb print

Disk /dev/sdb: 3737GB
Sector size (logical/physical): 512B/512B
Partition Table: gpt

Number Start End Size File system Name Flags

Information: Don't forget to update /etc/fstab, if necessary.

myxenserver:~# parted /dev/sdb mkpart ext2 0 3737GB
myxenserver:~# parted /dev/sdb print

Disk /dev/sdb: 3737GB
Sector size (logical/physical): 512B/512B
Partition Table: gpt

Number Start End Size File system Name Flags
1 17.4kB 3737GB 3737GB ext2

Information: Don't forget to update /etc/fstab, if necessary.

myxenserver:~# vgcreate xen /dev/sdb1
Volume group "xen" successfully created

myxenserver:~# vgdisplay
--- Volume group ---
VG Name xen
System ID
Format lvm2
Metadata Areas 1
Metadata Sequence No 1
VG Access read/write
VG Status resizable
MAX LV 0
Cur LV 0
Open LV 0
Max PV 0
Cur PV 1
Act PV 1
VG Size 3.40 TB
PE Size 4.00 MB
Total PE 891039
Alloc PE / Size 0 / 0
Free PE / Size 891039 / 3.40 TB
VG UUID kZ260M-qv13-7unz-Rwd8-TfbM-qIUF-7PSHaB

Now install some packages that we will need:

myxenserver:~# apt-get install bridge-utils iproute linux-image-2.6.18-6-xen-amd64 nmap tcpdump xen-hypervisor-3.0.3-1-amd64 xen-ioemu-3.0.3-1 xen-linux-system-2.6.18-6-xen-amd64 xen-tools xen-utils-3.0.3-1 xen-utils-common

now, reboot into the new xen enabled kernel.

edit your /etc/xen-tools/xen-tools.conf to relect your local setting, the ones I use are :
#start xen-tools.conf
lvm = xen

size = 4Gb # Disk image size.
memory = 256Mb # Memory size
swap = 128Mb # Swap size
fs = ext3 # use the EXT3 filesystem for the disk image.
dist = etch # Default distribution to install.
image = sparse # Specify sparse vs. full disk images.

gateway = 10.1.2.1
netmask = 255.255.255.0

kernel = /boot/vmlinuz-2.6.18-6-xen-vserver-amd64
initrd = /boot/initrd.img-2.6.18-6-xen-vserver-amd64

mirror = http://ftp.us.debian.org/debian/

## end xen-tools.conf

now, edit /etc/xen/xend-config.sxp and uncomment:
(network-script network-bridge)
and I set:
(dom0-cpus 2)

now restart xen:

/etc/init.d/xend

now to create a xen instance
xen-create-image --hostname=xensever01 --size=300G --ip=10.1.2.100 -netmask=255.255.255.0

start the xen instance:
xm create /etc/xen/xenserver01.cfg

and you can now connect to it:
xm console xensever01

Log in with root, no password should be set at this time, so now would be a good time to set it.

Congrats! you now have a xen server up and running ready to get what ever software you want.

First Snow!

Jeff Dickison — Thu, 22 Nov 2007 21:07:18 GMT

T61 grub framebuffer resolution

Jeff Dickison — Wed, 12 Sep 2007 18:39:42 GMT

Here's an easy way to figure out the correct resolution for your T61, or pretty much anything else:

hwinfo --framebuffer

In the output, you should see something like this:
Mode 0x036e: 1680x1050 (+6720), 24 bits

Take that mode for your vga= on your kernel line:
title Debian GNU/Linux, kernel 2.6.21-2-686
root (hd0,0)
kernel /boot/vmlinuz-2.6.21-2-686 root=/dev/sda1 ro vga=0x036e
initrd /boot/initrd.img-2.6.21-2-686
savedefault

then, when you reboot, it should come up with the correct resolution.

Apache2 + php on Debian Lenny

Jeff Dickison — Wed, 12 Sep 2007 18:16:38 GMT

This is a short howto on setting up apache2 on Lenny, it will set up the basics on getting apache2 and php5 up and running on your Deian/Lenny box:

apt-get update
apt-get install apache2

apache2 should start now, you can check to make sure like so:
lsof -i:80

Now to install the php module for apache2:

apt-get install libapache2-mod-php5

apt should enable the module for you, you can always check to make sure:
a2enmod php5

Now, we have to restart our server:
/etc/init.d/apache2 stop
/etc/init.d/apache2 start

To verify, you can put a php file in /var/www , say /var/www/test.php

Now point your browser to http://your.server/test.php , and you should see the phpinfo page.

Thats it.

MD Ate My Acid

Jeff Dickison — Mon, 10 Sep 2007 07:47:42 GMT

Just messing around tonight with my Machine Drum and a Novation Nova.
Take a listen

On my way

Jeff Dickison — Mon, 30 Jul 2007 01:34:07 GMT

Sad day! No, wait, disaster avoided!

Jeff Dickison — Wed, 02 May 2007 20:27:32 GMT

Looks like I just lost all of my mp3s. The drive I have all of them stored on just took a dive:

May 2 13:22:10 proto kernel: ata2: no sense translation for status: 0x40
May 2 13:22:10 proto kernel: ata2: status=0x40 { DriveReady }
May 2 13:22:10 proto kernel: sd 1:0:0:0: SCSI error: return code = 0x08000002
May 2 13:22:10 proto kernel: sdb: Current: sense key: Aborted Command
May 2 13:22:10 proto kernel: Additional sense: No additional sense information
May 2 13:22:10 proto kernel: end_request: I/O error, dev sdb, sector 501481551
May 2 13:23:55 proto kernel: ata2: no sense translation for status: 0x40
May 2 13:23:55 proto kernel: ata2: status=0x40 { DriveReady }
May 2 13:23:55 proto kernel: sd 1:0:0:0: SCSI error: return code = 0x08000002
May 2 13:23:55 proto kernel: sdb: Current: sense key: Aborted Command
May 2 13:23:55 proto kernel: Additional sense: No additional sense information
May 2 13:23:55 proto kernel: end_request: I/O error, dev sdb, sector 0
May 2 13:24:25 proto kernel: ata2: no sense translation for status: 0x40
May 2 13:24:25 proto kernel: ata2: status=0x40 { DriveReady }
May 2 13:24:25 proto kernel: sd 1:0:0:0: SCSI error: return code = 0x08000002
May 2 13:24:25 proto kernel: sdb: Current: sense key: Aborted Command
May 2 13:24:25 proto kernel: Additional sense: No additional sense information
May 2 13:24:25 proto kernel: end_request: I/O error, dev sdb, sector 0

Already tried to do a fsck on it, no luck with that. Hm, maybe it's a bad cable..

UPDATE:
Turns out, yes, it was the cable. I replaced the sata cable with a different one, the one that was in there had 90deg angel connectors and didn't really seem like they fit too well. It was all I had at the time I put the drive in. But, with a new cable the drive is nice and happy. whew!

Time to do a backup.

Bring your own big wheel stop animation!

Jeff Dickison — Tue, 10 Apr 2007 19:37:41 GMT

Every Easter, theres a big race in San Francisco, the Bring Your Own Big Wheel . I took all of these photos with my D200, then put them all together in this nifty movie. It covers 3 of the races that went on that day and is made up of almost 600 individual pictures!