github/containerd
2
0
Fork 0
Code Issues Pull Requests Packages Projects Releases 2 Wiki Activity

Merge pull request #640 from mikebrow/crictl-load-description

Browse Source 
documents load image
This commit is contained in:
Lantao Liu 2018-03-05 14:36:48 -08:00 committed by GitHub
commit 9a097c9d34
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 33 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

33
docs/crictl.md
View File

@ -30,12 +30,45 @@ debug: true
```
## Download and Inspect a Container Image
The pull command tells the container runtime to download a container image from
a container registry.
```console
$ crictl pull busybox
...
$ crictl inspecti busybox
... displays information about the image.
```
## Directly Load a Container Image
Another way to load an image into the container runtime is with the load
command. With the load command you inject a container image into the container
runtime from a file. First you need to create a container image tarball. For
example to create an image tarball for a pause container using Docker:
```console
$ docker pull k8s.gcr.io/pause-amd64:3.1
3.1: Pulling from pause-amd64
67ddbfb20a22: Pull complete
Digest: sha256:59eec8837a4d942cc19a52b8c09ea75121acc38114a2c68b98983ce9356b8610
Status: Downloaded newer image for k8s.gcr.io/pause-amd64:3.1
$ docker save k8s.gcr.io/pause-amd64:3.1 -o pause.tar
```
Then load the container image into the container runtime:
```console
$ sudo ctrcri load pause.tar
Loaded image: k8s.gcr.io/pause-amd64:3.1
```
List images and inspect the pause image:
```console
$ sudo crictl images
IMAGE TAG IMAGE ID SIZE
docker.io/library/busybox latest f6e427c148a76 728kB
k8s.gcr.io/pause-amd64 3.1 da86e6ba6ca19 746kB
$ sudo crictl inspecti da86e6ba6ca19
... displays information about the pause image.
$ sudo crictl inspecti k8s.gcr.io/pause-amd64:3.1
... displays information about the pause image.
```
## Run a pod sandbox (using a config file)
```console
$ cat sandbox-config.json