Howto | LinuxDynasty

How to get information from the Netscaler using Python and Suds.

Netscaler, Python, Zenoss No Responses »

Feb 012010

Recently I just started to use the Citrix Netscalers again ( Load Balancers ). Being the person that I am, I wanted a way to grab the information using the SOAP API.
Now Citrix has a ton of documentation for Perl/C/C# and Java ( None for Python ). SOAP client support has not been the best for Python, in my opinion.
I know you have soappy/ZSI, which I have had issues with consuming Broken WSDL files ( Having to fix the Broken WSDL file manually, SUCKS!).

Just 2 weeks ago, I encounterd SUDS. This module is by far, the best SOAP client for Python.
There documentation is simple and straight to the point, with a bunch of nice samples to get you on your way.

Install SUDS before proceeding further. You can get suds from here. https://fedorahosted.org/suds/
Connection to my netscaler was as simple as this…

Python 2.4.3 (#1, Sep  3 2009, 15:37:37)[GCC 4.1.2 20080704 (Red Hat 4.1.2-46)]

on linux2Type "help", "copyright", "credits" or "license" for more information.
>>> from suds.client import Client
>>> url = "http://nsip/api/NSConfig.wsdl"
>>> from suds.xsd.doctor import *
>>> imp = Import('http://schemas.xmlsoap.org/soap/encoding/')
>>> imp.filter.add("urn:NSConfig")
>>> d = ImportDoctor(imp)
>>> client = Client(url, doctor=d, location="http://nsip/soap/")
>>> client.service.login(username="login", password="pass")(simpleResult){ rc = 0 message = "Done" }
>>>

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How to setup serial console on linux

Uncategorized No Responses »

Feb 102008

This tutorial is for those Admins who need to setup serial console on there LINUX servers

Section-1

- First step is to make sure you have a serial port.
- Second step is to make sure you have a console cable. You can do this by running this..
```
linuxdynasty.org]# dmesg |grep ttyS0
ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A
  
```

hardware

Add this co:2345:respawn:/sbin/agetty ttyS0 9600 vt100-nav to /etc/inittab
using your favorite editor. (mine is vi

) This is how mine looks like..

# Run gettys in standard runlevels
co:2345:respawn:/sbin/agetty ttyS0 57600 vt100-nav
1:2345:respawn:/sbin/mingetty tty1
2:2345:respawn:/sbin/mingetty tty2
3:2345:respawn:/sbin/mingetty tty3
4:2345:respawn:/sbin/mingetty tty4
5:2345:respawn:/sbin/mingetty tty5
6:2345:respawn:/sbin/mingetty tty6

- Here is the all in one solution..
```
serial --unit=0 --speed=57600
terminal --timeout=5 serial console
title CentOS (2.6.9-55.0.2.EL)
   root (hd1,0)
   kernel /vmlinuz-2.6.9-55.0.2.EL ro root=/dev/VolGroup00/LogVol00 console=tty0 console=ttyS0,57600n8
   initrd /initrd-2.6.9-55.0.2.EL.img
  
```
- Now reboot your server and from another box console in.

Section-2

- First step, follow the First step in Section-1 of this tutorial.

hardware

Add this exec /sbin/getty -L 57600 ttyS0 vt102 to /etc/event.d/ttyS0 (
If this file does not exist please create it) using your favorite editor. (mine is vi

)
This is how mine looks like..

# tty0 - getty
#
# This service maintains a getty on tty1 from the point the system is
# started until it is shut down again.

start on runlevel 2
start on runlevel 3
start on runlevel 4
start on runlevel 5

stop on runlevel 0
stop on runlevel 1
stop on runlevel 6

respawn
exec /sbin/getty -L 57600 ttyS0 vt102

LVM2 How To

Uncategorized No Responses »

Feb 102008

Do you have the need for speed???… OK OK enough with the comments …Before reading this tutorial you should understand a little how LVM works

How to create a physical volume, volume group, and logical volume.

- Figure out which disk and partitions you have that are being used df -h.
- Now we need to run fdisk -l and see all the partitions, including the ones that we have that are not mounted up
- Now that we know which disks and partitions that you can not destroy, we can start our process of creating lvm volumes.
- Lets initialize the first partition..
  pvcreate /dev/sda1.
- Now lets initialize the second partition..
  pvcreate /dev/sdb1.
- To display info on the physical volume, just run this
  pvdisplay.
- vgcreate linuxdynasty /dev/sda1 /dev/sdb1
- vgchange -a y linuxdynasty
- To display info on the volume group, just run this
  vgdisplay.
- Now we create the logical volume.
  lvcreate -L10G -nHomeLV linuxdynasty
- To display info on the logical volume, just run this
  lvdisplay.
- First, we create the file system
  mkfs.ext3 /dev/linuxdynasty/HomeLV
- Second, we mount the file system
  mount -t ext3 /dev/linuxdynasty/HomeLV /home