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doc: update readme

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Stefan Reimer 2022-05-03 15:58:03 +02:00
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README.md
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@ -5,6 +5,7 @@ KubeZero is a Kubernetes distribution providing an integrated container platform
# Design philosophy
- Cloud provider agnostic, bare-metal/self-hosted
- Focus on security and simplicity before feature bloat
- No vendor lock in, most components are optional and could be exchanged
- Organic Open Source / open and permissive licenses over closed-source solutions
- No premium services / subscriptions required
@ -24,22 +25,29 @@ KubeZero is distributed as a collection of versioned Helm charts, allowing custo
| KubeZero Version | Kubernetes Version | EOL |
|------------------|---------------------|-------------|
| v1.22.X-Y | v1.22.X | 30 Sep 2022 |
| v1.23.X-Y | v1.23.X | Alpha |
| v1.22.8-Y | v1.22.8 | 30 Sep 2022 |
| v1.21.9-Y | v1.21.9 | 31 May 2022 |
| v1.20.8 | v1.20 | Feb 2022 |
| v1.19 | v1.19 | Jul 2021 |
| v1.18 | v1.18 | Apr 2021 |
| v1.17 | v1.17 | Jan 2021 |
| v1.16 | v1.16 | Nov 2020 |
[Upstream release policy](https://kubernetes.io/releases/)
# Components
## OS
- all nodes are based on Alpine V3.15
- 2 GB encrypted root filesystem
- no 3rd party dependencies at boot ( other than container registries )
- minimal attack surface
- extremely small memory footprint / overhead
## Container runtime
- cri-o rather than Docker for improved security and performance
## Control plane
- all Kubernetes components compiled against Alpine OS using `buildmode=pie`
- support for single node control plane for small clusters / test environments to reduce costs
- access to control plane from within the VPC only by default ( VPN access required for Admin tasks )
- controller nodes are used for various platform admin controllers / operators to reduce costs and noise on worker nodes
@ -55,6 +63,7 @@ KubeZero is distributed as a collection of versioned Helm charts, allowing custo
- all IAM roles are maintained via CloudBender automation
- aws-node-termination handler integrated
- support for spot instances per worker group incl. early draining etc.
- support for [Inf1 instances](https://aws.amazon.com/ec2/instance-types/inf1/) part of [AWS Neuron](https://aws.amazon.com/machine-learning/neuron/).
## Network
- Multus support for multiple network interfaces per pod, eg. additional AWS CNI
@ -70,12 +79,12 @@ allows flexible / more containers per worker node compared to eg. AWS VPC CNI
- CSI Snapshot controller and Gemini snapshot groups and retention
## Ingress
- AWS Network Loadbalancer and Istio Ingress controllers
- optional rate limiting support
- No additional costs per exposed service
- Automated SSL Certificate handling via cert-manager incl. renewal etc.
- AWS Network Loadbalancer and Istio Ingress controllers
- no additional costs per exposed service
- real client source IP available to workloads via HTTP header and access logs
- ACME SSL Certificate handling via cert-manager incl. renewal etc.
- support for TCP services
- Client source IP available to workloads via HTTP header
- optional rate limiting support
- optional full service mesh
## Metrics