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Containerd doesn't support merging plugin configuration from multiple
sources, and Talos has several pieces which configure CRI plugin:
(see https://github.com/containerd/containerd/issues/5837)
* base config
* registry mirror config
* system extensions
* ...
So we implement our own simple way of merging config parts (by simply
concatenating text files) to build a final `cri.toml`.
At the same time containerd migrated to a new format to specify registry
mirror configuration, while old way (via CRI config) is going to be
removed in 1.7.0. New way also allows to apply most of registry
configuration (except for auth) on the fly.
Also, containerd was updated to 1.6.0-rc.0 and runc to 1.1.0.
Signed-off-by: Andrey Smirnov <andrey.smirnov@talos-systems.com>
See https://github.com/containerd/cri/pull/1543Fixes#4274
Fix is applied on two levels:
* for Talos-initiated pulls, update API call
* for Kubernetes-initiated pulls, update CRI plugin config
Comparison of `/var` usage before/after, as reported by
`talosctl mounts` (in GiB):
| | before | after |
|--------------|:------:|------:|
| controlplane | 1.98 | 1.74 |
| worker | 1.17 | 1.01 |
It's hard to measure effect on pulls to system containerd, like
`installer` image, as it's ephemeral, but it should also reduce space
usage in `tmpfs`.
Also fixes output of `talosctl mounts`.
Signed-off-by: Andrey Smirnov <andrey.smirnov@talos-systems.com>
