Jonas Genannt - useful stuff

3Ware - CLI - Command Line Interface for debian

nospam@example.com (Jonas Genannt) — Sun, 03 Jun 2007 21:41:15 +0200

New ( version: 9.4.1.1) 3Ware CLI programm is now packaged. You can find it on: jonas.genannt.name.

Please have a look at: Using the tw_cli

Using Apache ReWrite Rules for maintenance sites

nospam@example.com (Jonas Genannt) — Thu, 03 May 2007 20:11:03 +0200

If you plan an maintenance shutdown for your website, you can use the mod-rewrite for the maintenance forward.

ReWriteEngine On
ReWriteCond %{REMOTE_ADDR} !^123\.123\.123\.([0-9]+)$
ReWriteRule ^(.*)$ http://your-site.com/maintenance.html [L]

This code will forward all users except from IP block 123.123.123.0/24 to an maintenance site.

If you have got 123.123.123.0/24 you can use the site as normal, and all other users will be forwarded.

Using tw_cli from 3Ware

nospam@example.com (Jonas Genannt) — Thu, 11 Jan 2007 20:48:58 +0100

The tw_cli from 3Ware for all the 3WARE Controllers is a little bit tricky.

Here are some examples how to use tw_cli:

tw_cli
//irena>info
Ctl Model Ports Drives Units NotOpt RRate VRate BBU
------------------------------------------------------------------------
c0 8506-4LP 4 3 1 0 3 - -

The info command is usefull for checking how many controller are available.

//irena>/c0 show
Unit UnitType Status %RCmpl %V/I/M Stripe Size(GB) Cache AVrfy
------------------------------------------------------------------------------
u0 RAID-5 OK - - 64K 298.099 ON -

Port Status Unit Size Blocks Serial
---------------------------------------------------------------
p0 OK u0 149.05 GB 312581808 0696J1FX608399
p1 OK u0 149.05 GB 312581808 0696J1FX611330
p2 NOT-PRESENT - - - -
p3 OK u0 149.05 GB 312581808 0696J1FX611304

The /c0 show command display which raid units and disks avilable on controller 0.
For the second controller in the system please type /c1 show.

//irena>/c0/u0 start verify
Sending start verify message to /c0/u0 ... Done.

The /c0/u0 start verify command starts an Raid verify on Controller 0 Unit 0.

//irena>/c0/u0 start rebuild disk=1
Sending rebuild start request to /c0/u0 on 1 disk(s)

The command /c0/u0 start rebuild disk=1 starts the rebuild on controller 0, unit 0 and disk 1 (on port 1).

If you are using debian, you can use my debian packages, please see here!

Feed up your RSS Feeds - Liferea

nospam@example.com (Jonas Genannt) — Thu, 17 Aug 2006 01:32:21 +0200

In the past I had some trouble to manage my RSS feeds.

I used Thunderbird for reading my email than the RSS feeds begun to grow up and I used Thunderbird to read my feeds, but it is the wrong program for it. To slow and to big, eats memory.

Today I started my search for an news reader! - I found Liferea.

A small and fast - written in GTK - newsreader. Now I'm happy with the feeds.

git - revision control systen

nospam@example.com (Jonas Genannt) — Fri, 11 Aug 2006 19:05:36 +0200

Git the (new) revision control systen used by the Linux kernel is very nice, if you know how to use it.

Here are some hints for you/me:

Downloads the git archive to your local directory linux-2.6.16.x:
git clone git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-2.6.16.y.git linux-2.6.16.x

Updates your git archive with the servers archive:
git pull git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-2.6.16.y.git

Lists the available Tags in the Branch:
ls -la .git/refs/tags/

Creates an diff between to Tags:
git diff v2.6.16.24..v2.6.16.25

rdiff-backup: declaration of love

nospam@example.com (Jonas Genannt) — Mon, 22 May 2006 17:13:48 +0200

I really love rdiff-backup

I use rdiff-backup with cron to backup my home directory from my raid 5 to a single harddrive daily.

Today I have done something wrong in Thunderbird, so I deleted my complete INBOX!

No problem.... Mount the backup drive, used rdiff-backup -r now to restore all data.

Result: Lost some Spam mails

Debian Volatile Service

nospam@example.com (Jonas Genannt) — Fri, 19 May 2006 02:18:03 +0200

Relating to that Virus Scanning entry I think Debian Volatile is better for an up-to-date ClamAV than Backports.org.

Debian Volatile is made for packages that change very often, and you need the current upstream package on a server. Like an up-to-date virus scanning engine.

So simple and this line to your sources.list and run after that an apt-get update.

deb http://ftp2.de.debian.org/debian-volatile sarge/volatile main

BTW: Volatile Mirror List

Now you can install your clamav normally with an apt-get install clamav.

tunnel VNC session throw SSH

nospam@example.com (Jonas Genannt) — Mon, 13 Feb 2006 20:06:58 +0100

If you want to tunnel VNC session via SSH you shoud start the vncserver on the remote host and than use that command

ssh -C -L 5901:192.168.0.1:5901 hggh.no-ip.org

to create the tunnel!

Than use vncviewer on the localhost with this command:

vncviewer localhost:1

Than you have tunneled VNC throw SSH

I know VNC is not very fast, but it is easy to set up than you need it NOW!