user ‘s needs in the cloud
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Tomi DolencJernej PorentaArnesinfo@arnes.siTF-MSP, Heraklion19-20. 9. 2011
User‘s Needs in the Cloud
Outline
• Before: virtual server hosting• After: „clouds“• How & why• User‘s needs• Is our judgement clouded?• Relation towards commercial clouds
Virtual server hosting @ Arnes
• “Guest virtual servers” - GVS• Typical VPS • Linux/Apache/MySQL stack • 1 CPU / 512Mb / 30GB• Packages: full (root access), partial (user access), closed (web based
access)• (Virtuozzo, ~100 VPS/server)
• Covers typical needs of user organizations:• Website (CMS)• LMS (mostly for schools)• Any other web based apps
• Support:• Helpdesk 10/5• Full VPS backup
Extended needs
• More disk space• More memory• Different platform (MS Windows)• Example:
• Specific software• Digital archives
Arnes clouds 2011
• Goal: enable tailored hosting for VIU + beyond
• Project started late 2010• Planned features
• VM Hosting• Storage
Arnes clouds 2011: VM hosting
• Solutions tested• OpenNebula• Eucalyptus• Ganeti
• Planned: • 10 physical servers• small/medium/large VM• total user control
Arnes clouds 2011: VM hosting
• Implemented – pilot phase:• 3 physical servers (will extend to 10)• Ganeti• Web managed VMs
• Production: late 2011
Arnes clouds 2011: Storage
• Started Q2 2011• Planned: iSCSI access to >1TB space• Pilot phase:
• Started in May • Tests were OK
• Production: October 2011
Future
• Translate to “true cloud”• Implementation: OpenStack• Dynamic provisioning• Advanced user needs:
• Temporary computing power• API interface
Future
• Extend resources• Additional physical servers• Additional storage
• Additional features• Predefined templates• Extended support (?)
• Use private cloud for our needs
Is our judgement clouded?
• Going “cloud” looks appealing• First step not difficult• Marketing the buzz• Keeping with the IT development trends
• Who needs it?• ROI?• Legal aspect?
Assesment of user‘s needs
• Only through selected interviews/personal contact• Users interested in anything that’s free• Very important: know & trust your provider
• Feedback from the pilot:• Happy with the support• Want more (sky’s the limit)
Resource allocation
• No charges Policy very important!• Internal user segmentation• Save enough for VIU needs• Maintain the helpful face
• Will they use flexible CPU/storage (“true cloud”)?
Planning the resources
• Make sure the € is well spent• Flexible resource allocation• Add more as you go and let users ask
for your € • Plan B: share/relocate to grid/HPC
• (can consume pretty much everything)
Legal aspect
• Hosting personal data Signing MxN contracts?
• Our Information Officer is currently looking into European practices, we are trying to find how it works in reality
• What’s your model?
MITM to public clouds
• Universities outsource email to the cloud (only students)
• Google & MS not very interested in us• Universities slow in adopting AAI• VDI for schools?
• Tempting but expensive• Companies reluctant to partner with
NREN
Your experience or good/bad practice?
(CC) Blackandecker/Flickr.
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