|=----------------------------------=[ XEN ]=------------------------------=|
+---------------------------------------------------------------------------+
|                                                                           |						
|                               XEN - dom0 (vmware)       		    |
|                                 Debian 4.0 Etch                           |
|								            |
+---------------------------------------------------------------------------+
|=-------------------------------=[ BH 2007 ]=-----------------------------=|


==================================================
 1. Poziadavky na system
==================================================

	CPU
	---
	* Jeden alebo viac 64bit x86 procesor(ov)
	* minimum - 1.5 GHz
	* odporucane - 2 GHz alebo multicore

	RAM
	---
	* minimum - 1 GB 
	* odporucane - 2 GB alebo viac 

	DISK
	----
	Lokalne pripojeny datovy sklad (PATA, SATA, SCSI) 
	* minimum - 16 GB diskoveho priestoru
	* odporucane - 60 GB a viac

	SIET
	----
	100 Mbit/s alebo rychlejsia sietova karta. 
	Gigabitova sietova karta je odporucana pre urychlenie konverzie Physical2Virtual a
	datovych prenosov pri exporte/importe a pre live relocation (zive premiestnenie)
	Virtualnych strojov.


==================================================
 2.  Schema particii + parametre
==================================================
	
	WMWARE - 20 GB disk
	-------------------
	/boot         - 200 MB
	swap          - 1,5 GB		
	/root (LVM)   - 8 GB
	/x1-www (LVM) - 3 GB
	/x1-db (LVM)  - 3 GB

	
	# cat /etc/fstab
	----------------
	/dev/mapper/system-root		/		ext3    	defaults,errors=remount-ro 0       1
	/dev/sda1			/boot           ext3    	defaults        0       2
	/dev/mapper/system-x1--www	/x1-www         ext3    	defaults        0       2
	/dev/mapper/system-x2--db	/x2-db          ext3    	defaults        0       2
	/dev/mapper/system-swap		none		swap    	sw              0       0
	/dev/hdc			/media/cdrom0   udf,iso9660 	user,noauto     0       0
	/dev/fd0			/media/floppy0  auto    	rw,user,noauto  0       0
	---------------- END /etc/fstab


==================================================
 3. Install zakladny software
==================================================

	# apt-get install ssh mc


==================================================
 4. Install XEN
==================================================

	V balickovom repozitari Debianu Etch sa nachadzaju 3 verzie XEN jadier:
	-----------------------------------------------------------------------
	a/ s podporou PAE (xen-linux-system-2.6.18-5-xen-686)
	b/ bez podpory PAE (linux-image-2.6.18-5-xen)
	c/ XEN + vserver ()


	PAE: http://en.wikipedia.org/wiki/Physical_Address_Extension


	Pri instalacii XEN jadra treba davat pozor, aby bolo ianstalovane spravne jadro.
	Ak sa nainstaluje zla verzia jadra, system vobec nenabehne a skonci s chybovou hlaskou:
	'Mismatch between Xen and DOM0 kernel'


	a/ Install XEN-PAE (tested)
	---------------------------
	Aj ked je PAE urcene pre systemy s pamatou vacsou ako 4GB pouzijeme toto jadro, kedze
	standardne debian jadro je PAE a pri pouzity nonPAE XEN jadra vznikol mismatch problem.

	# apt-get install xen-linux-system-2.6.18-5-xen-686
	# apt-get install libc6-xen
	# init 6


	Problem1 - pri starte systemu s XEN jadrom sa objavili velke mnozstvo nasledujucich hlasok
	------------------------------------------------------------------------------------------
	'4gb seg fixup, process sshd (pid 1162), cs:ip 73:008d8cfc'
	'printk: 185714 messages suppressed.'

	Riesenie1 - nainstalujeme XEN GLIBC (libc6-xen)
	-----------------------------------------------
	# apt-get install libc6-xen

	
	
	b/ Install XEN bez PAE
	----------------------
	Ak chceme XEN jadro bez podpory PAE treba separatne nainstalovat tieto balicky:
	- linux-image-2.6.18-5-xen kernel
	- xen-utils 
	- xen-hypervisor

	
	c/ Install XEN + vserver
	------------------------
	Kedze nechceme mat v systeme bordel, nebudeme mixovat virtualizacne nastroje a tak toto
	jadro nebudeme pouzivat. 


==================================================
 5. Siet - nastavenie bridge
==================================================

	# apt-get install bridge-utils


	# nano /etc/xen/xend-config.sxp
	-------------------------------
	(network-script network-bridge)


==================================================
 X. Linkz
==================================================

	
	XEN na DEBIANe dom0
	-------------------
	http://www.howtoforge.com/debian_etch_xen_3.1
	http://www.jejik.com/articles/2007/03/a_test_drive_of_debian_etch_xen/