sealos: A Go repository from shy-Xu

Popularize cloud native technologies with ease

What is sealos

sealos is a cloud operating system distribution with Kubernetes as its kernel.

In the early stages, operatings systems have adopted a layered architecture, which later evolved into kernel architecture like Linux and Windows. With the emergence of container technologies, cloud OS will migrate to a "cloud kernel" architecture with strong cohesion in the future.

From now on, think of all your machines as an abstract supercomputer whose operating system is sealos, where Kubernetes serves as the OS kernel.
Instead of IaaS, PaaS and SaaS, there will only be cloud OS drivers(CSI, CNI and CRI implementations), cloud OS kernel(Kubernetes) and distributed applications.

Core Capabilities

Cluster image
- The entire cluster will be able to build, ship and run.
- Semantics of docker will be extended to clusters so that any distributed applications can be defined and run smoothly.
hub.sealos
- A cluster image repository where you can retrieve pre-built distributed applications such as basic Kubernetes cluster image, high availability pgsql cluster image, high availability minio cluster image, etc.
desktop.sealos
- A desktop for cloud OS, not to be confused with traditional cloud desktop. It is similar to macOS, but manages cluster and distributed applications instead of personal computers.
Distributed application matrix
- Anything you need including storage / network / HA database / message queue / monitoring can be retrieved with a click of the mouse, or simply sealos run.
- sealos now support 20+ HA applications.

Core features

Manage clusters lifecycle
- Quickly install HA Kubernetes clusters
- Add / remove nodes
- Clean the cluster, backup and auto recovering, etc.
Download and use OCI-compatible distributed applications
- Openebs, minio, ingress, pgsql, mysql, redis, etc.
Customize you own distributed applications
- Using Dockerfile to build distributed applications images, save all dependencies.
- Push distributed applications images to docker hub.
- Combine many applications to build your own cloud platform.

Quickstart

Installing an HA kubernetes cluster with calico as CNI

Here kubernetes:v1.24.0 and calico:v3.22.1 are the cluster images in the registry which are fully compatible with OCI standard. Wonder if we can use flannel instead? Of course!

# Download and install sealos. sealos is a golang binary so you can just download and copy to bin. You may also download it from release page.
$ wget -c https://sealyun-home.oss-cn-beijing.aliyuncs.com/sealos-4.0/latest/sealos-amd64 -O sealos && \
    chmod +x sealos && mv sealos /usr/bin
# Create a cluster
$ sealos run labring/kubernetes:v1.24.0 labring/calico:v3.22.1 \
     --masters 192.168.64.2,192.168.64.22,192.168.64.20 \
     --nodes 192.168.64.21,192.168.64.19 -p [your-ssh-passwd]

Building a custom cluster image

See Building an ingress cluster image.

Storage, message queue, database, etc.

Don't be shocked by the following:

$ sealos run labring/helm:v3.8.2 # install helm
$ sealos run labring/openebs:v1.9.0 # install openebs
$ sealos run labring/minio-operator:v4.4.16 labring/ingress-nginx:4.1.0 \
   labring/mysql-operator:8.0.23-14.1 labring/redis-operator:3.1.4 # oneliner

And now everything is ready.

shy-Xu/sealos

What is sealos

Core features

Quickstart

Links