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Nov 3, 2025
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Automated RELEASES.md sync update #249

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Expand Up @@ -477,9 +477,11 @@ The deprecated features are shown in the following table:
| Go-Plugin library (`*.so`) as containerd runtime plugin | containerd v2.0 | containerd v2.1 ✅ | Use external plugins (proxy or binary) |
| CNI `bin_dir` in CRI runtime config (`plugins.'io.containerd.cri.v1.runtime'.cni.bin_dir`) | containerd v2.1 | containerd v2.3 | Change `bin_dir` to `bin_dirs` in the same section which supports a list of directories |
| NRI v0.1.0 plugin support | containerd v2.2 | containerd v2.3 | Use the v010-adapter NRI plugin, or update v0.1.0 plugins to use the current NRI API |
| cgroup v1 support | containerd v2.2 | (May 2029) | Use cgroup v2 |

- Pulling Schema 1 images has been disabled in containerd v2.0, but it still can be enabled by setting an environment variable `CONTAINERD_ENABLE_DEPRECATED_PULL_SCHEMA_1_IMAGE=1`
until containerd v2.1. `ctr` users have to specify `--local` too (e.g., `ctr images pull --local`). Users of CRI clients (such as Kubernetes and `crictl`) have to specify this environment variable on the containerd daemon (usually in the systemd unit).
- The latest release in May 2029 may not necessarily support cgroup v1, but there will be at least one maintained branch with the support for cgroup v1.

### Deprecated config properties
The deprecated properties in [`config.toml`](https://github.com/containerd/containerd/blob/main/docs/cri/config.md) are shown in the following table:
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