Sometimes `talosctl etcd snapshot` might not be available, for example
when etcd is not healthy. In that case it's possible to copy raw etcd
data directory with `talosctl cp /var/lib/etcd .` and use
`member/snap/db` to recover the cluster. But such copy won't pass
integrity checks, so they should be disabled explicitly.
Signed-off-by: Andrey Smirnov <smirnov.andrey@gmail.com>
When Talos `controlplane` node is waiting for a bootstrap, `etcd`
contents can be recovered from a snapshot created with
`talosctl etcd snapshot` on a healthy cluster.
Bootstrap process goes same way as before, but the etcd data directory
is recovered from the snapshot.
This flow enables disaster recovery for the control plane: given that
periodic backups are available, destroy control plane nodes, re-create
them with the same config, and bootstrap one node with the saved
snapshot to recover etcd state at the time of the snapshot.
Signed-off-by: Andrey Smirnov <smirnov.andrey@gmail.com>
This is mostly refactoring to adapt to the new APIs.
There are some small changes which are not user-visible immediately (but
visible when using `talosctl get` to inspect low-level details):
* `extras` namespace is removed, it was a hack to distinguish extra and
system manifests
* `Manifests` are managed by two controllers as shared outputs, stored
in the `controlplane` namespace now
* `talosctl inspect dependencies` output got slightly changed
* resources now have `md.owner` set to the controller name which manages
the resource
Signed-off-by: Andrey Smirnov <smirnov.andrey@gmail.com>
This adds a simple API and `talosctl etcd snapshot` command to stream
snapshot of etcd from one of the control plane nodes to the local file.
Signed-off-by: Andrey Smirnov <smirnov.andrey@gmail.com>
Fixes: https://github.com/talos-systems/talos/issues/3323
Not exactly matching with udevd generated `by-<id>` symlinks, but should
provide sufficient amount of property selectors to be able to pick
specific disks for any kind of disk: sd card, hdd, ssd, nvme.
Signed-off-by: Artem Chernyshev <artem.0xD2@gmail.com>
