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Presumably you'd run one application inside such an image and between two images you do have isolation.
by baruch 12y ago
Presumably you'd run one application inside such an image and between two images you do have isolation.
- bobland 12y agoCorrect, and it's fair to say that the application pretty much is the image - if the application exits, the VM shuts down. Configuration can be kept out of the image with cloud-init, and I basically treat all images as immutable. The majority of my experience has been using OSv, running Akka, and it's yielding excellent results. Image sizes are small (<200MB), easy enough to upload to AWS and create a new AMI in a few minutes. Boot time to a running application is a few seconds. The only possibly downside is that OSv (as yet) doesn't support paravirtualisation, only HVM.