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A containerd log shows "incompatible CNI versions; config is 1.0.0, plugin supports ...". What is wrong?

  1. The plugin is newer than the config declares
  2. The CNI config omits its version
  3. Two CNI plugins are installed
  4. The config declares a version newer than the installed plugin supports
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Answer: D. The config declares a version newer than the installed plugin supports

The message appears when the config version is later than what the plugin implements, and Pods will not start until the plugins or the config are brought into line.

Source: Troubleshooting CNI plugin-related errors (Kubernetes) — Incompatible CNI versions error

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