OpenNebula @ Open Cloud Day
2015
Introduction
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Nico Schottelius
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President of ungleich GmbH
– Linux/Unix Infrastructure Services
– Application Hosting (RubyOnRails, Django, Nodejs)
– Hosting based on OpenNebula and cdist
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FOSS Hacker
I talk for you
Ask Questions
Any Time
I answers in <30s
Overview
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Introduction
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OpenNebula Basics
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How to Setup
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How to Use
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Advanced topics
– High Availability
– Clusters & Federation
What is OpenNebula?
What is OpenNebula?
OpenNebula is a powerful, proven, adaptable and
interoperable open-source platform for data center
virtualization and enterprise cloud management, which
is certified and commercially supported on the most
common infrastructure platforms. OpenNebula provides
the rapid innovation of open-source, with stability
and long-term production support of commercial
software.
What is OpenNebula?
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Open Source Software
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Virtualisation Plattform
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Public and private Cloud
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Very easy
OpenNebula Architecture
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Monolithic
– Compared to other Software
– However subsystems are modular
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One Frontend
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VM-Hosts (“Nodes”)
History
OpenNebula Users
How to talk OpenNebula
OpenNebula Entities
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Users, Groups, ACLs
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Virtual Machines, Templates, Images
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Hosts, Datastores, Virtual Networks
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Clusters, Zones
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Marketplace
User, Groups, ACLs
Virtual Machines
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Based on Template
– Some parameters can be changed, but not all (!)
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Template
– Network
– Image (s)
– CPU/RAM
– Constraints
Infrastructure
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Hosts
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Datastores
– Shared/Local
– NFS/GlusterFS/Ceph/Sheepdog/ssh
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Virtual Networks
– Bridging
– VLAN
– VXLAN
Marketplace
Technology Overview
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What is the heart of OpenNebula?
Frontend
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Ruby On Rails
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Various (shell) Scripts
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Database
– sqlite
– MySQL
– ...
Frontend / User Authentication
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Native (Database based)
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SSH
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x509 (Certificates)
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LDAP
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Active Directory
Hosts / Nodes
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Virtualisation
– KVM
– Xen
– VMWare
– Hyper-V
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Authentication / Authorization
– SSH
Storage
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Non-Shared
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SSH
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GlusterFS (*)
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Ceph
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Sheepdog (master branch/addon)
Networking
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Bridging
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Firewalling
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Openvswitch
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VXLAN
How to Setup
OS
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CentOS/RHEL and Ubuntu (recommended)
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Archlinux / Debian working
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Probably (!) runs on any Linux
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Requirements
– Ruby, libstdc++, Shell (Frontend)
– kvm + ssh (Node)
How to Setup
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Add OpenNebula Repository
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Install Software (apt-get, yum, …)
– Package for frontend
– (Ruby Gems for frontend)
– Package for nodes
OpenNebula Frontend
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Webfrontend (“sunstone”)
– Ruby On Rails
– Database: Sqlite / MySQL
– Optional: Webserver (f.i. nginx) for SSL
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Scheduler (“oned”)
– Monitoring
– Management
Frontend Requirements
OpenNebula Node
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oneadmin user
– No root access required after installation
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SSH keys of frontend oneadmin user
– Management
– Monitoring
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KVM / Xen / VMWare
Minimal Configuration
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Add
– (Datastore)
– Network
– Host
– Image
– Template
Experiences: Setup
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Installation mostly straight forward
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Documentation for advanced methods (Ceph,
GlusterFS) can be improved
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VERY easy to extend
– Especially for storage / virtualisation
– ~4 scripts for Sheepdog support
How to use
How to use
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Sunstone (WebUI)
– https with f.i. nginx
– wss for VNC
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API (XMC-RPC)
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Command Line Interface
WebUI / Sunstone
Command Line Interface
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one*
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User: oneadmin
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Mostly: onevm & onetemplate
[21:19:06] entrance:~$ one
one onedatastore onehost onevcenter oneacct onedb oneimage onevm
oneacl oneflow onemarket onevnet onecluster oneflow-template onetemplate onezone oned onegroup oneuser
Experiences: Using
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CLI is mostly consistent
– Error messages could be better
– Check /var/log/one/*.log (!)
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WebUI works rather smooth
– Some operations easier than in CLI
Demo
Advanced Topics
Clusters
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Mapping of Resources to “groups”
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Hosts
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Networks
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Datastores
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Templates
– Selecting clusters
Virtual Data Centers
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Mapping of groups to resources
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Can be used with clusters
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Or parts of clusters
Cloud Bursting / Hybrid Cloud
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Public Cloud treated as a host
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Azure
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Amazon
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Softlayer
High Availability: Frontend
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HA Cluster with
– Corosync / CCS / Ricci
– Anything that detects/ensure other node is down
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MySQL Multi Master for data redundancy
High Availability: Virtual Machines
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Host down detection (standard)
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Hooks
– STONITH
– Re-Deploy
Federation
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Combine Multiple OpenNebula Instances
– Users, Groups, Networks, VDC, ACLs, Zones
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MySQL Replication
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Zones
Hooks
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Virtual Machines
– Create, Running, Shutdown, ...
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Hosts
– Create, Error, Disable
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Other
– Users, Groups, Networks, ...
Conclusion?
Conclusion
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OpenNebula is easy to setup and maintain
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Simple, but flexible
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Solves real world problems
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Small, but active community
Follow Up
OpenNebulaConf 2015
OpenNebula Hackday
Want to know more?
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[email protected]
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Twitter: @ungleich
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