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ALVARO SOTO @2016 OPENSTACK & CEPH ENGINEER
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WHOAMI
▸ Software developer (python lover).
▸ Full Linux sysadmin stack.
▸ Fan of “Design for Failure” architectures.
▸ Cepher / Stacker
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AGENDA
▸ Image service
▸ Disk Formats
▸ Basic architecture
▸ Image metadata
▸ Glance store drivers.
▸ ….
▸ Q & A
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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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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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BASIC ARCHITECTURE
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IMAGE METADATAImage 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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CORE COMPONENTS
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RELEASE HISTORY
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https://en.wikipedia.org/wiki/OpenStack
GLANCE ADOPTION
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https://www.openstack.org/software/releases/mitaka/components/glance
GLANCE STORE DRIVERS
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http://docs.openstack.org/developer/glance_store/drivers/index.html
DEMO!!!!!!
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THANKS!!!!
Q & A
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CONTACT INFO
▸ Twitter: @alsotoes
▸ E-Mail: [email protected] / [email protected]
▸ Web / Blog: http://headup.ws
▸ IRC: khyron
▸ Code: https://github.com/alsotoes
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