Alvaro Soto will present on the OpenStack Glance image service. Glance provides services for discovering, registering, and retrieving virtual machine images in various formats like raw, vhd, vmdk and stores image metadata. It has a RESTful API and images can be stored in different locations using store drivers. The presentation will cover the basic architecture of Glance, image metadata, core components and demo Glance.

1. ALVARO SOTO @2016
OPENSTACK & CEPH ENGINEER
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2. WHOAMI
▸ Software developer (python lover).
▸ Full Linux sysadmin stack.
▸ Fan of “Design for Failure” architectures.
▸ Cepher / Stacker
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3. AGENDA
▸ Image service
▸ Disk Formats
▸ Basic architecture
▸ Image metadata
▸ Glance store drivers.
▸ ….
▸ Q & A
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4. IMAGE SERVICE
• Provides services for discovering, registering, and retrieving virtual machine images.
• RESTful API that allows querying of VM image metadata and retrieval of the actual image.
• Stored images can be used as a template.
• It can also be used to store and catalog an unlimited number go backups.
• Images available through Glance can be stored in a variety of locations.
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5. DISK FORMATS
• raw: This is an unstructured disk image format
• vhd: This is the VHD disk format, a common disk format used by virtual machine monitors from
VMWare, Xen, Microsoft, VirtualBox, and others
• vmdk: Another common disk format supported by many common virtual machine monitors
• vdi: A disk format supported by VirtualBox virtual machine monitor and the QEMU emulator
• iso: An archive format for the data contents of an optical disc (e.g. CDROM).
• qcow2: A disk format supported by the QEMU emulator that can expand dynamically and supports
Copy on Write
• aki: This indicates what is stored in Glance is an Amazon kernel image
• ari: This indicates what is stored in Glance is an Amazon ramdisk image
• ami: This indicates what is stored in Glance is an Amazon machine image
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6. BASIC ARCHITECTURE
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7. IMAGE METADATA
Image metadata can help end users determine the nature of an image, and is used by associated OpenStack
components and drivers which interface with the Image service.
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8. CORE COMPONENTS
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9. RELEASE HISTORY
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https://en.wikipedia.org/wiki/OpenStack

10. GLANCE ADOPTION
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https://www.openstack.org/software/releases/mitaka/components/glance

11. GLANCE STORE DRIVERS
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http://docs.openstack.org/developer/glance_store/drivers/index.html

12. DEMO!!!!!!
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13. THANKS!!!!
Q & A
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14. CONTACT INFO
▸ Twitter: @alsotoes
▸ E-Mail: alsotoes@gmail.com / asoto@kionetworks.com
▸ Web / Blog: http://headup.ws
▸ IRC: khyron
▸ Code: https://github.com/alsotoes
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