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shiftstack / dev-install

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Add support to install Ceph via loop device #38

Closed EmilienM closed 3 years ago

EmilienM commented 3 years ago

For the developer use case, we use a loop device to install LVM volumes for ceph. This patch will add two options to dev-install:

It will take care of creating a loop device that is reboot-persistent, and then use it for the deployment of Ceph via ceph-ansible. It'll also dynamically load the environment and services if we want Ceph enabled.

This addition does not configure Ceph for production, so in the OpenShift on OpenStack use-case, keep in mind that the Ceph performances won't be great on loop devices. In other words, booting the cluster nodes from volumes will be problematic because of perf requirements for etcd.

It also adds nodisk flavors for both large and xlarge. They can be useful when deploying OCP masters or workers with rootVolume from Cinder (backend in Ceph).

EmilienM commented 3 years ago

I addressed Matt's comments, i'll merge it.