106 lines
4.8 KiB
Markdown
106 lines
4.8 KiB
Markdown
KubeZero - Zero Down Time Kubernetes platform
|
|
========================
|
|
KubeZero is a Kubernetes distribution providing an integrated container platform so you can focus on your applications.
|
|
|
|
# Design philosophy
|
|
|
|
- Focus on security and simplicity over feature creep
|
|
- No vendor lock in, most components are optional and could be easily changed as needed
|
|
- No premium services / subscriptions required
|
|
- Staying up to date and contributing back to upstream projects, like alpine-cloud-images and others
|
|
- Cloud provider agnostic, bare-metal/self-hosted
|
|
- Organic Open Source / open and permissive licenses over closed-source solutions
|
|
- Corgi approved :dog:
|
|
|
|
|
|
# Architecture
|
|
|
|
|
|
|
|
# Version / Support Matrix
|
|
KubeZero releases track the same *minor* version of Kubernetes.
|
|
Any 1.30.X-Y release of Kubezero supports any Kubernetes cluster 1.30.X.
|
|
|
|
KubeZero is distributed as a collection of versioned Helm charts, allowing custom upgrade schedules and module versions as needed.
|
|
|
|
```mermaid
|
|
%%{init: {'theme':'dark'}}%%
|
|
gantt
|
|
title KubeZero Support Timeline
|
|
dateFormat YYYY-MM-DD
|
|
section 1.29
|
|
beta :129b, 2024-07-01, 2024-07-31
|
|
release :after 129b, 2024-11-30
|
|
section 1.30
|
|
beta :130b, 2024-09-01, 2024-10-31
|
|
release :after 130b, 2025-02-28
|
|
section 1.31
|
|
beta :131b, 2024-12-01, 2025-01-30
|
|
release :after 131b, 2025-04-30
|
|
```
|
|
|
|
[Upstream release policy](https://kubernetes.io/releases/)
|
|
|
|
# Components
|
|
|
|
## OS
|
|
- all compute nodes are running on Alpine V3.20
|
|
- 1 or 2 GB encrypted root file system
|
|
- no external dependencies at boot time, apart from container registries
|
|
- focused on security and minimal footprint
|
|
|
|
## GitOps
|
|
- cli / cmd line install
|
|
- optional full ArgoCD support and integration
|
|
|
|
## Featured workloads
|
|
- rootless CI/CD build platform to build containers as part of a CI pipeline, using podman / fuse device plugin support
|
|
- containerized AI models via integrated out of the box support for Nvidia GPU workers as well as AWS Neuron
|
|
|
|
## 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
|
|
|
|
## AWS integrations
|
|
- IAM roles for service accounts allowing each pod to assume individual IAM roles
|
|
- access to meta-data services is blocked all workload containers on all nodes
|
|
- 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
|
|
- Cilium using Geneve encapsulation, incl. increased MTU allowing flexible / more containers per worker node compared to eg. AWS VPC CNI
|
|
- Multus support for multiple network interfaces per pod, eg. additional AWS CNI
|
|
- no restrictions on IP space / sizing from the underlying VPC architecture
|
|
|
|
## Storage
|
|
- flexible EBS support incl. zone awareness
|
|
- EFS support via automated EFS provisioning for worker groups via CloudBender automation
|
|
- local storage provider (OpenEBS LVM) for latency sensitive high performance workloads
|
|
- CSI Snapshot controller and Gemini snapshot groups and retention
|
|
|
|
## Ingress
|
|
- 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
|
|
- optional rate limiting support
|
|
- optional full service mesh
|
|
|
|
## Metrics
|
|
- Prometheus support for all components, incl. out of cluster EC2 instances (node_exporter)
|
|
- automated service discovery allowing instant access to common workload metrics
|
|
- pre-configured Grafana dashboards and alerts
|
|
- Alertmanager events via SNSAlertHub to Slack, Google, Matrix, etc.
|
|
|
|
## Logging
|
|
- all container logs are enhanced with Kubernetes and AWS metadata to provide context for each message
|
|
- flexible ElasticSearch setup, leveraging the ECK operator, for easy maintenance & minimal admin knowledge required, incl. automated backups to S3
|
|
- Kibana allowing easy search and dashboards for all logs, incl. pre configured index templates and index management
|
|
- [fluentd-concerter](https://git.zero-downtime.net/ZeroDownTime/container-park/src/branch/master/fluentd-concenter) service providing queuing during highload as well as additional parsing options
|
|
- lightweight fluent-bit agents on each node requiring minimal resources forwarding logs secure via TLS to fluentd-concenter
|