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[Docs](https://sealos.io) | [简体中文](https://www.sealos.io/zh-Hans/)
## 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
- [x] The entire cluster will be able to build, ship and run.
- [x] Semantics of docker will be extended to clusters so that any distributed applications can be defined and run smoothly.
- hub.sealos
- [x] 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
- [x] Anything you need including storage / network / HA database / message queue / monitoring can be retrieved with a click of the mouse, or simply `sealos run`.
- [x] sealos now support 20+ HA applications.
## Core features
- Manage clusters lifecycle
- [x] Quickly install HA Kubernetes clusters
- [x] Add / remove nodes
- [x] Clean the cluster, backup and auto recovering, etc.
- Download and use OCI-compatible distributed applications
- [x] OpenEBS, MinIO, Ingress, PostgreSQL, MySQL, Redis, etc.
- Customize you own distributed applications
- [x] Using Dockerfile to build distributed applications images, saving all dependencies.
- [x] Push distributed applications images to Docker Hub.
- [x] Combine multiple 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!
```shell script
# 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 Example CloudImage](https://www.sealos.io/docs/examples/build-example-cloudimage).
> Storage, message queue, database, etc.
Don't be shocked by the following:
```shell script
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.
## Links
- [Contribution Guidelines](./CONTRIBUTING.md)
- [Development Guide](./DEVELOPGUIDE.md)
- [sealos 3.0(older version)](https://github.com/labring/sealos/tree/release-v3.3.9#readme) For older version users. Note that sealos 4.0 includes significant improvements, so please upgrade ASAP.
- [buildah](https://github.com/containers/buildah) Capabilities of buildah is widely used in sealos 4.0 to make cluster images compatible with container images and docker registry.
- [sealer](https://github.com/sealerio/sealer) Capabilities of sealer is widely used in sealos 4.0 to make Clusterfile compatible with sealer, some module forked sealer source code.
**Join us: [Telegram](https://t.me/cloudnativer), QQ Group(98488045), Wechat：fangnux**
## License
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