77 lines
3.4 KiB
Markdown
77 lines
3.4 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
|
|
|
|
- Cloud provider agnostic, bare-metal/self-hosted
|
|
- 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
|
|
- Staying and contributing back to upstream projects as much as possible
|
|
|
|
|
|
# Version / Support Matrix
|
|
|
|
| KubeZero \ Kubernetes Version | v1.17 | v1.18 | v1.19 | v1.20 | EOL |
|
|
|----------------------------------------|-------|-------|-------|-------|-------------|
|
|
| master branch | no | yes | beta | no | |
|
|
| stable branch | no | yes | no | no | |
|
|
| v2.18.0 | no | yes | no | no | 30 Apr 2021 |
|
|
| v1 | yes | no | no | no | 30 Jan 2021 |
|
|
|
|
# Architecure
|
|
|
|
|
|
|
|
# Components
|
|
|
|
## Container runtime
|
|
- cri-o rather than Docker for improved security and performance
|
|
|
|
## Control plane
|
|
- 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
|
|
|
|
## GitOps
|
|
- full ArgoCD support and integration (optional)
|
|
|
|
## AWS IAM access control
|
|
- Kiam allowing IAM roles per pod
|
|
- IAM roles are assumed / requested and cached on controller nodes for improved security
|
|
- access to meta-data services is blocked / controlled on all nodes
|
|
- core IAM roles are maintained via CFN templates
|
|
|
|
## Network
|
|
- Calico using VxLAN incl. increased MTU
|
|
- allows way more containers per worker
|
|
- isolates container traffic from VPC by using VxLAN overlay
|
|
- 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 CFN templates
|
|
- local storage provider for latency sensitive high performance workloads
|
|
|
|
## Ingress
|
|
- AWS Network Loadbalancer and Istio Ingress controllers
|
|
- No additional costs per exposed service
|
|
- Automated SSL Certificate handling via cert-manager incl. renewal etc.
|
|
- support for TCP services
|
|
- Client source IP available to workloads via HTTP header
|
|
- optional full service mesh
|
|
|
|
## Metrics
|
|
- Prometheus support for all components
|
|
- automated service discovery allowing instant access to common workload metrics
|
|
- Preconfigured community maintained Grafana dashboards for common services
|
|
- Preconfigured community maintained Alerts
|
|
|
|
## Logging
|
|
- all container logs are enhanced with Kubernetes 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
|
|
- central fluentd 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 SSL to fluentd
|