Shared VM Image Repository
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One key decision is if you want to allow application teams to “bring your own image”.
However, most application teams don’t want to bother with this and use images already provided in the cloud. There are two main implementation approaches for this
use cloud-provider managed virtual machine base images, maybe applying a policy to restrict them to a subset of available images (e.g. only allow CentOS, Ubuntu)
provide “golden images” managed by your organizations
The golden image approach has a few advantages, e.g. when it comes to wiring up existing server management infrastructure like SOC Integration. It’s however quite a bit of work, considering cloud-specific specialties (kernel extensions for hypervisor support, cloud-init scripts etc.)
Currently no tool implementations documented. Contributions welcome!