find out what container runtime is used and mention private registries

2021-10-26 16:25:13 +00:00
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+---
+title: Find Out What Container Runtime is Used on a Node
+content_type: task
+reviewers:
+- SergeyKanzhelev
+weight: 10
+---
+
+<!-- overview -->
+
+This page outlines steps to find out what [container runtime](/docs/setup/production-environment/container-runtimes/)
+the nodes in your cluster use.
+
+Depending on the way you run your cluster, the container runtime for the nodes may
+have been pre-configured or you need to configure it. If you're using a managed
+Kubernetes service, there might be vendor-specific ways to check what container runtime is
+configured for the nodes. The method described on this page should work whenever
+the execution of `kubectl` is allowed.
+
+## {{% heading "prerequisites" %}}
+
+Install and configure `kubectl`. See [Install Tools](/docs/tasks/tools/#kubectl) section for details.
+
+## Find out the container runtime used on a Node
+
+Use `kubectl` to fetch and show node information:
+
+```shell
+kubectl get nodes -o wide
+```
+
+The output is similar to the following. The column `CONTAINER-RUNTIME` outputs
+the runtime and its version.
+
+```none
+# For dockershim
+NAME         STATUS   VERSION    CONTAINER-RUNTIME
+node-1       Ready    v1.16.15   docker://19.3.1
+node-2       Ready    v1.16.15   docker://19.3.1
+node-3       Ready    v1.16.15   docker://19.3.1
+```
+
+```none
+# For containerd
+NAME         STATUS   VERSION   CONTAINER-RUNTIME
+node-1       Ready    v1.19.6   containerd://1.4.1
+node-2       Ready    v1.19.6   containerd://1.4.1
+node-3       Ready    v1.19.6   containerd://1.4.1
+```
+
+Find out more information about container runtimes
+on [Container Runtimes](/docs/setup/production-environment/container-runtimes/) page.