Cloud Computing in practice with OpenNebula ~ Develer workshop 2012

A short introduction to OpenNebula for newcomers, with a peek on distributed filesystem and monitoring tools.

Transcript

1. Cloud Computing,
   in practice
   with
   Giovanni Toraldo - Sysadmin
   

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2. ● Keywords: Linux, Debian, Ubuntu, PHP, Drupal,
   Symfony, Open Source, pizza, beer, geek.
   ● OpenNebula contributor, currently working on
   Cloudesire at Liberologico.
   about.me/giovannitoraldo
   

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3. About OpenNebula
   OpenNebula.org is an open-source
   project developing the industry
   standard solution for building and
   managing virtualized enterprise data
   centers and IaaS clouds
   

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4. A bit of history
   

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5. Core features
   ● Virtual infrastructure management and
   orchestration (KVM, XEN, ESXi)
   ● External cloud connector (EC2)
   ● Interfaces for Cloud Consumers (EC2, OCCI)
   ● Capacity and performance management
   ● Monitoring
   ● Accounting
   ● User quota, ACLs
   

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6. Why not something else?
   ● Focusing on data center virtualization
   ● High perf core, scriptable drivers
   ● All-in-one package, batteries included
   ● Opensource and user-driven development
   ● API-agnostic
   

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7. Architecture
   

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8. Shared storage
   

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9. Shared storage: NFS or?
   GlusterFS: completely decentralized, no
   SPOF, FUSE client, developed by Red Hat:
   http://gluster.org - use ON shared driver.
   MooseFS: no native HA, proven stable,
   automatic balancing of resources:
   http://moosefs.org - use ON shared driver.
   Ceph: should solve a lot of problems, but
   actually only the block device is "stable":
   http://ceph.com - use experimental driver
   

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10. Monitoring
    ● Ganglia: near-zero configuration,
    distributed monitoring and graphing for
    HPC, clusters, and highly dynamic
    environments.
    ● im_ganglia driver can be used to off-load
    frontend from hosts resources polling via
    ssh.
    

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12. Monitoring
    ● Check_mk: use a local agent to gather
    metrics on every node, generate
    nagios/icinga configs to retrieve them and
    generate alerts when shit happens.
    ● HOST_HOOK and VM_HOOK can be used to
    dynamically attach/detach hosts and VM
    instances within Check_mk.
    

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14. It's time to party...
    

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16. Overview of the CLI Interface
    # Login as root/opennebula and su on oneadmin
    $ su - oneadmin
    # Currently configured hosts and their status
    $ onehost list
    # Currently available vnetworks
    $ onevnet list
    # Show leases and specific configuration of the vnetwork
    $ onevnet show 0
    # List available disk images
    $ oneimage list
    # List registered VM templates
    $ onetemplate list
    # Show template details
    $ onetemplate show 0
    

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17. Resources
    http://opennebula.org/documentation:rel3.8
    http://blog.opennebula.org/
    http://bit.ly/opennebula-3-book-packtpub
    http://marketplace.c12g.com/appliance
    http://dev.opennebula.org/
    http://opennebula.org/software:ecosystem
    

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