A general-purpose Cloud Operating System designed for managing Cloud Native applications

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Sealos is a Kubernetes distribution, a general-purpose Cloud Operating System designed for managing Cloud Native applications.

• Henceforth, envisage all your machinery as an ethereal supercomputer, whose operating system is Sealos, with Kubernetes assuming the role of the OS kernel.
• Rather than IaaS, PaaS, and SaaS, the new paradigm shall solely encompass Cloud OS drivers (CSI, CNI, and CRI implementations), Cloud OS kernel (Kubernetes), and distributed applications.

Run a Kubernetes cluster

Demo

Sealos Desktop

Sealos Desktop Docs

Utilize the Cloud infrastructure akin to a Desktop computer, with the liberty to install or uninstall any Distributed Application at will:

Some Screen Shots of Sealos Desktop:

Sealos App Store	Sealos App Store

PostgreSQL on Sealos Desktop	PostgreSQL on Sealos Desktop

Core features

• ☸️ Manage clusters lifecycle
  • Quickly install HA Kubernetes clusters.
  • Add / remove nodes, Clean the cluster.
  • Backup and auto recovering, etc.
• 💻 Download and deploy OCI-compatible distributed applications.
  • OpenEBS, MinIO, Ingress, PostgreSQL, MySQL, Redis, etc.
• 🛠️ Customize your own distributed applications.
  • Utilizing Dockerfile to build images of distributed applications while preserving all of their dependencies.
  • Push images of distributed applications to Docker Hub.
  • Integrate various applications to construct a personalized Cloud platform.
• ☁️ Sealos Cloud
  • Multi-tenant management.
  • Application management.
  • Multi-cloud cluster management, deploy Kubernetes and custom applications on any cloud platform.
  • Run any distributed applications.
  • Cloud terminal.
  • App Store.

Quickstart

Installing a highly available Kubernetes cluster with Calico as the container network interface (CNI).

Here, the Cluster images kubernetes:v1.24.0 and calico:v3.24.1 stored in the registry are fully compliant with the OCI standard. However, if you prefer to use flannel, it is also an option.

# Download and install Sealos, which is a binary tool written in Golang. Simply download it and copy it to the bin directory. You can also download it from the release page.
$ wget  https://github.com/labring/sealos/releases/download/v4.1.4/sealos_4.1.4_linux_amd64.tar.gz  && \
    tar -zxvf sealos_4.1.4_linux_amd64.tar.gz sealos &&  chmod +x sealos && mv sealos /usr/bin 
# Create a cluster
$ sealos run labring/kubernetes:v1.25.0 labring/helm:v3.8.2 labring/calico:v3.24.1 \
     --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]

• Supported Kubernetes versions: 240+ Kubernetes versions Kubernetes with cri-docker runtime
• Other images for distributed applications

Single host

$ sealos run labring/kubernetes:v1.25.0 labring/helm:v3.8.2 labring/calico:v3.24.1 --single
# remove taint
$ kubectl taint nodes --all node-role.kubernetes.io/master:NoSchedule-

Building a custom Cluster image

Reference Building an Example CloudImage.

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.

Use Kubernetes Cluster image with cri-docker runtime

sealos run labring/kubernetes-docker:v1.20.8-4.1.4 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]

Community & support

• Visit the Sealos website for full documentation and useful links.
• Join our Discord server is to chat with Sealos developers and other Sealos users. This is a good place to learn about Sealos and Kubernetes, ask questions, and share your experiences.
• Tweet at @sealosio on Twitter.
• Create GitHub Issues for bug reports and feature requests.

Roadmap

Sealos maintains a public roadmap. It gives a a high-level view of the main priorities for the project, the maturity of different features and projects, and how to influence the project direction.

Contributing & Development

Have a look through existing Issues and Pull Requests that you could help with. If you'd like to request a feature or report a bug, please create a GitHub Issue using one of the templates provided.

See contribution guide →

See development guide →

Links

• Sealos Action
• Bug Verify Example
• Application Image
• Rootfs Image
• Sealos 3.0(older version) For older version users. Note that sealos 4.0 includes significant improvements, so please upgrade ASAP.
• Buildah The functionalities of Buildah are extensively utilized in Sealos 4.0 to ensure that cluster images are compatible with OCI standard.