Build cloud image with binary file

Command line tools such as helm or kustomize are single binary files. Sealos can package them into cloud images, and then install them by deploying cloud images on the master node.Let's take helm as an example to introduce how to package binary files into cloud image.

Create a base directory as build workspace.

$ mkdir ~/cloud-images

Create an opt directory to store binary file.

$ cd cloud-images
$ mkdir opt/

Prepare the helm binary file,Here we download it from github release.

wget https://get.helm.sh/helm-v3.10.1-linux-amd64.tar.gz
tar -zxvf helm-v3.10.1-linux-amd64.tar.gz
chmod a+x linux-amd64/helm
mv linux-amd64/helm opt/

Create a file named Sealosfile for image build:

FROM scratch
COPY opt ./opt
CMD ["cp opt/helm /usr/bin/"]

The directory structure is as follows now:

.
├── Sealosfile
└── opt
    └── helm

Now everything is ready, you can start to build the cloud image.

sealos build -t labring/helm:v3.10.1 .

Notes: You should install the sealos command to local host first.

You can view the build logs.

root@ubuntu:~/cloud-images# sealos build -t labring/helm:v3.10.1 .
2022-11-06T16:17:38 info lookup in path charts
2022-11-06T16:17:38 info path charts is not exists, skip
2022-11-06T16:17:38 warn if you access private registry,you must be 'sealos login' or 'buildah login'
2022-11-06T16:17:38 info pull images [] for platform is linux/amd64
2022-11-06T16:17:38 info output images [] for platform is linux/amd64
STEP 1/3: FROM scratch
STEP 2/3: COPY opt ./opt
STEP 3/3: CMD ["cp opt/helm /usr/bin/"]
COMMIT labring/helm:v3.10.1
Getting image source signatures
Copying blob f30936773f80 done  
Copying config 19ed4a24f0 done  
Writing manifest to image destination
Storing signatures
--> 19ed4a24f0f
Successfully tagged labring/helm:v3.10.1
19ed4a24f0fe1d7ba18770195aa61f2191b9f45e7ab6bf929768cacea47375c5
2022-11-06T16:17:39 info 
      ___           ___           ___           ___       ___           ___
     /\  \         /\  \         /\  \         /\__\     /\  \         /\  \
    /::\  \       /::\  \       /::\  \       /:/  /    /::\  \       /::\  \
   /:/\ \  \     /:/\:\  \     /:/\:\  \     /:/  /    /:/\:\  \     /:/\ \  \
  _\:\~\ \  \   /::\~\:\  \   /::\~\:\  \   /:/  /    /:/  \:\  \   _\:\~\ \  \
 /\ \:\ \ \__\ /:/\:\ \:\__\ /:/\:\ \:\__\ /:/__/    /:/__/ \:\__\ /\ \:\ \ \__\
 \:\ \:\ \/__/ \:\~\:\ \/__/ \/__\:\/:/  / \:\  \    \:\  \ /:/  / \:\ \:\ \/__/
  \:\ \:\__\    \:\ \:\__\        \::/  /   \:\  \    \:\  /:/  /   \:\ \:\__\
   \:\/:/  /     \:\ \/__/        /:/  /     \:\  \    \:\/:/  /     \:\/:/  /
    \::/  /       \:\__\         /:/  /       \:\__\    \::/  /       \::/  /
     \/__/         \/__/         \/__/         \/__/     \/__/         \/__/

                  Website :https://www.sealos.io/
                  Address :github.com/labring/sealos

View the built image locally, now all dependent binary files are build into cloud image.

root@ubuntu:~/cloud-images# sealos images
labring/helm                      v3.10.1          19ed4a24f0fe   3 minutes ago       45.1 MB

You can push images to any Docker registry, the follow command push it to dockerhub.

sealos push labring/helm:v3.10.1

Notes: please use the sealos command to operate cloud images, Docker command is not supported.

If you use a private image repository, just login registry with sealos login before pull or push images.

sealos login docker.io -u xxx -p xxx

sealos login registry.cn-hangzhou.aliyuncs.com -u xxx -p xxx

Install cloud image

Then you can run cloud image in your cluster.

sealos run labring/helm:v3.10.1

The helm binary command will installed to your master nodes of your kubernetes cluster.

root@ubuntu:~# which helm
/usr/bin/helm

Build cloud image with binary file

Install cloud image​

Install cloud image