Here is a list of command examples for working with containerd using ctr:
List all images:
$ ctr image ls
Pull an image:
$ ctr image pull docker.io/library/nginx:latest
Run a container:
$ ctr run docker.io/library/nginx:latest
Attach a shell to a running container:
$ ctr exec -it my-container sh
Stop a running container:
$ ctr stop my-container
Remove a container:
$ ctr rm my-container
Remove an image:
$ ctr image rm docker.io/library/nginx:latest
Here are some more advanced command examples:
Inspect an image:
$ ctr image inspect docker.io/library/nginx:latest
Create a snapshot of a container:
$ ctr snapshot create my-container my-snapshot
Restore a container from a snapshot:
$ ctr snapshot restore my-snapshot my-new-container
Export an image to a file:
$ ctr image export docker.io/library/nginx:latest my-image.tar
Import an image from a file:
$ ctr image import my-image.tar
Start a container with a specific network:
$ ctr run --network bridge docker.io/library/nginx:latest
Start a container with a specific volume mount:
$ ctr run --mount type=bind,source=/host/path,target=/container/path docker.io/library/nginx:latest
You can also use ctr to work with namespaces. For example, you can list all namespaces using the following command:
$ ctr namespace ls
And you can create a new namespace using the following command:
$ ctr namespace create my-namespace
Once you have created a namespace, you can start containers in that namespace using the -n flag. For example, the following command will start a container in the my-namespace namespace:
$ ctr run -n my-namespace docker.io/library/nginx:latest
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- DevOps Certified Professionals (DCP)
- Site Reliability Engineering Certified Professionals (SRECP)
- Master in DevOps Engineering (MDE)
- DevSecOps Certified Professionals (DSOCP)
URL - https://www.devopsschool.com/certification/
My Linkedin - https://www.linkedin.com/in/rajeshkumarin
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