OpenNebula is a tool for managing virtualization servers and network interfaces to deploy and manage virtual machines (VMs) on private and public clouds. It supports various virtualization (KVM, VMware, Xen), storage (local, NFS, iSCSI, Ceph) and image (LVM, qcow2, Ceph blocks) backends. OpenNebula consists of a management node with the OpenNebula software and optional Sunstone GUI, and compute servers where VMs are deployed and run. It provides a command line interface and workflow to create networks, images, VM templates, and deploy VMs, applying contextualization and hooks.

1. OpenNebula
public and private cloud management
!
Martin Alfke
<martin.alfke@buero20.org>
© Martin Alfke - 2014

2. OpenNebula
- general •
management of virtualization
servers
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management of network
interfaces
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management of VM’s
© Martin Alfke - 2014

3. OpenNebula
- general -
© Martin Alfke - 2014

4. OpenNebula
- backends •
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virtualization
storage
image
© Martin Alfke - 2014

5. OpenNebula
- virtualization backends •
supported virtualization backends
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KVM
VMware
Xen
public clouds (AWS/Rackspace/…)
© Martin Alfke - 2014

6. OpenNebula
- storage backends •
supported storage backends
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local storage
NFS
iSCSI
Ceph
© Martin Alfke - 2014

7. OpenNebula
- image backends •
supported image backends
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LVM
qcow2
ceph blocks
© Martin Alfke - 2014

8. OpenNebula
- components •
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management node
compute server
© Martin Alfke - 2014

9. OpenNebula
- components •
management node
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opennebula (required)
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vnc proxy (optional)
apache + passenger (sunstone web gui optional)
mysql db (required)
user: oneadmin + ssh key (required)
© Martin Alfke - 2014

10. OpenNebula
- components •
compute server
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libvirtd
user: oneadmin + authorized key file
sudoers (bridgectl, …)
policykit (RH) / user permissions for /dev/qemu
(Debian)
© Martin Alfke - 2014

11. OpenNebula
- workflow •
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network
image
contextualization
template
vm
hooks
© Martin Alfke - 2014

12. OpenNebula
- workflow •
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network
image
contextualization
template
vm
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802.1q
ebtables
open vswitch
dummy (nat)
hooks
© Martin Alfke - 2014

13. OpenNebula
- workflow •
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network
image
contextualization
template
vm
hooks
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has to be created in advance
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copy large images directly
from management node, not
from your workstation
needs one-context package
or cloud-init (v0.7.3 or
newer)
© Martin Alfke - 2014

14. OpenNebula
- workflow •
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network
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changes the defaults from
the image (hostname,
network settings, ssh pub
key, …
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can be extended by own
scripts
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vm gets a carom device with
contextualisation
information
image
contextualization
template
vm
hooks
© Martin Alfke - 2014

15. OpenNebula
- workflow •
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network
image
contextualization
template
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combines network, image
and hardware (cpu, ram)
vm
hooks
© Martin Alfke - 2014

16. OpenNebula
- workflow •
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network
image
contextualization
template
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vm is started by selecting a
desired template
vm
hooks
© Martin Alfke - 2014

17. OpenNebula
- workflow •
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network
image
contextualization
template
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on create or on delete
hooks: dns management,
puppet cert management
vm
hooks
© Martin Alfke - 2014

18. OpenNebula
- GUI / CLI •
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CLI
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user needs auth token in ~/.one_auth.conf
one* commands
GUI
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sunstone webinterface
can be connected to LDAP
© Martin Alfke - 2014

19. OpenNebula
- GUI / CLI -
© Martin Alfke - 2014

20. OpenNebula
- GUI / CLI -
© Martin Alfke - 2014

21. OpenNebula
- GUI / CLI -
© Martin Alfke - 2014

22. OpenNebula
- GUI / CLI -
© Martin Alfke - 2014

23. OpenNebula
- GUI / CLI -
© Martin Alfke - 2014

24. OpenNebula
- GUI / CLI -
© Martin Alfke - 2014

25. OpenNebula
- GUI / CLI -
© Martin Alfke - 2014

26. Kontextualisierung
# Context variables generated by OpenNebula
DISK_ID='1'
ETH0_DNS='10.175.4.11'
ETH0_GATEWAY='10.175.16.1'
ETH0_IP='10.175.24.1'
ETH0_MASK='255.255.240.0'
ETH0_NETWORK='10.175.16.0'
FILES_DS='/var/lib/one/datastores/2/
ef48a35be2d8723ef7788175be6087eb:'''init.sh''' '
HOSTNAME='martin.xxxxxxxxx'
NETWORK='YES'
TARGET='hdb'
© Martin Alfke - 2014

27. OpenNebula
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VirtualBox Demo
© Martin Alfke - 2014