1. Containers are the future of
Cloud
Pavel Odintsov
CTO, FastVPS Eesti OU
odintsov@fastvps.ee

2. Open source virtualization platforms

3. KVM
Main developer: RedHat
Kernel integration state: in kernel since 2007
Status: production ready
Hardware support: same as Linux
Virtualization type: full virtualization
Supported client OS: Linux, FreeBSD, Windows

4. KVM architecture

5. Xen
Main developer: Citrix, XenSource
Kernel integration state: partially in kernel since 2012
(client), no plans about the server
Status: production ready
Hardware support: only fixed number of hardware, see
HCL
Virtualization type: full virtualization, paravirtualization
Supported client OS: Linux, FreeBSD, Windows

6. Xen architecture

7. OpenVZ
Main developer: Parallels (ex. SwSoft)
Kernel integration state: partially in kernel and work in
progress
Status: production ready
Hardware support: same as Linux
Virtualization type: os level
virtualization, containerization
Supported client OS: Linux

8. OpenVZ architecture

9. LinuX Containers, LXC
Main developer: same as kernel (Intel, IBM, Parallels)
Kernel integration state: partially in kernel and work in
progress
Status: not ready for production (issues in
network, disk)
Hardware support: same as Linux
Virtualization type: os level
virtualization, containerization
Supported client OS: Linux

10. LinuX Containers, LXC architecture

11. Why OpenVZ?
• Production ready since 2006
• Extremely low overhead (in compare with
Xen/KVM is about 20%)
• Simple integration into Linux stack
• Many successful projects (LXC): Heorku,
CloudLinux, Docker (dot.cloud)

12. KVM vs OpenVZ vs Xen LAMP

13. KVM vs OpenVZ vs Xen Web App

14. OpenVZ customers

15. OpenVZ requirements
• Almost any physical server (yes, you can use old notebook)
• Operation system: CentOS 6, RHEL 6 or Scientific Linux 6
• One external or internal IP address
• Internet connection (only for downloading packages and templates)
• One hour of free time 

16. OpenVZ, server resources
Server resources:
• RAM
• HDD
• CPU
• Network

17. OpenVZ deployment
echo "SELINUX=disabled" > /etc/sysconfig/selinux
wget -P /etc/yum.repos.d/ http://ftp.openvz.org/openvz.repo
yum install -y vzkernel
yum install -y vzctl vzquota ploop
shutdown –r now
yum remove kernel -y

18. OpenVZ – container creating
vzctl create 101 --ostemplate debian-6.0-x86_64
--layout ploop --ipadd 88.198.144.251 --hostname
mytesthostname.ru --config vswap-2g --diskspace
10G
vzctl set 101 --onboot yes --ram 4G --swap 1G --
diskspace 20G --save
vzctl start 101
vzctl set 101 --userpasswd root:openvz_2013

19. OpenVZ – additional tools
• vzctl destroy – remove container with all data
• vzctl stop – container stop
• vzlist –a – list of all available containers on
host

20. OpenVZ information
• http://openvz.org
• http://twitter.com/_openvz_
• http://bugzilla.openvz.org
• http://openvz.livejournal.com
• http://git.openvz.org

21. Thank you! :)
Pavel Odintsov
CTO, FastVPS Eesti OU
odintsov@fastvps.ee