Producing rescue images (at least for OpenStack, maybe others?)
Hi,
In OpenStack, there's the possibility to rescue instances with a special
image made for it. The only thing that changes is the cloud-init
configuration, so that it allows:
- ssh as root
- ssh using a password set by cloud-init (which can be seen with
"openstack server show" once the VM is in rescue mode).
It also would be nice to add more tools to that image, for example,
xfs-progs, zfs-progs, data recovery tools, and such.
it's *not* reasonable to expect that:
- cloud operator would build it themselves
- cloud users would use a normal image for rescue (which wouldn't be
adapted for the job)
Therefore, IMO it'd be nice to also produce such image in our image-set.
Is there such a need in other clouds? How does it work in Azure/GCE/AWS?
Does the team has any idea of what kind of tool (ie: package names) that
we should install in such image? I thought about at least parted, mbr,
kpartx, dosfstools, e2fsprogs, qemu-utils, scrub, testdisk, scalpel,
gpart, gddrescue, foremost, ddrutility. Anything else?
Your thoughts? Should this be discuss in our meeting?
Cheers,
Thomas Goirand (zigo)
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