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Add a mapping table from docker cli to crictl in crictl debugging doc

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Signed-off-by: Qiutong Song <songqt01@gmail.com>
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Qiutong Song
2020-11-19 10:16:33 +00:00
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content/en/docs/tasks/debug-application-cluster/crictl.md
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@@ -356,4 +356,49 @@ CONTAINER ID IMAGE CREATED STATE
See [kubernetes-sigs/cri-tools](https://github.com/kubernetes-sigs/cri-tools)
for more information.
## Mapping from docker cli to crictl
The exact versions for below mapping table are for docker cli v1.40 and crictl v1.19.0. Please note that the list is not exhaustive. For example, it doesn't include experimental commands of docker cli.
Warn: the output format of CRICTL is similar to Docker CLI, despite some missing columns for some CLI. Make sure to check output for the specific command if your script output parsing.
### Retrieve Debugging Information
docker cli | crictl | Description | Unsupported Features
-- | -- | -- | --
attach | attach | Attach to a running container | --detach-keys, --sig-proxy
exec | exec | Run a command in a running container | --privileged, --user, --detach-keys
images | images | List images |  
info | info | Display system-wide information |  
inspect | inspectinspecti | Return low-level information on a container, image or task |  
logs | logs | Fetch the logs of a container | --details
ps | ps | List containers |  
stats | stats | Display a live stream of container(s) resource usage statistics | Column: NET/BLOCK I/O, PIDs
version | version | Show the runtime (Docker, ContainerD, or others) version information |  
### Perform Changes
docker cli | crictl | Description | Unsupported Features
-- | -- | -- | --
create | create | Create a new container |  
kill | stop (timeout = 0) | Kill one or more running container | --signal
pull | pull | Pull an image or a repository from a registry | --all-tags, --disable-content-trust
rm | rm | Remove one or more containers |  
rmi | rmi | Remove one or more images |  
run | run | Run a command in a new container |  
start | start | Start one or more stopped containers | --detach-keys
stop | stop | Stop one or more running containers |  
update | update | Update configuration of one or more containers | --restart, --blkio-weight and some other resource limit not supported by CRI.
### Supported only in crictl
crictl | Description
-- | --
imagefsinfo | Return image filesystem info
inspectp | Display the status of one or more pods
port-forward | Forward local port to a pod
pods | List pods
runp | Run a new pod
rmp | Remove one or more pods
stopp | Stop one or more running pods