Ask
ㅁ Purpose
- Education
- Development & Testing
- Hosting Production Applications
ㅁ Cloud or OnPrem?
ㅁ Workloads
- How many?
- What kind?
+ Web
+ Big Data/Analytics
- Application Resource Requirements
+ CPU Intetnsive
+ Memory Intensive
- Traffic
+ Heavy Traffic
+ Burst Traffic
Purpose
- Education
+ Minikube
+ Single node cluster with kubeadm/GCP/AWS
- Development & Testing
+ Multi-node cluster with a Single Master and Multiple workers
+ Setup using kubeadm tool or quick provision on GCP or AWS or AKS
- Hosting Production Application
?
Hosting Production Applications
- High Availbility Multi Node cluster with multiple master nodes
- Kubeadm or GCP or Kops on AWS or other supported platforms
- Upto 5000 nodes
- Upto 150,000 PODs in the cluster
- Upto 300,000 Total Containers
- Upto 100 PODs per Node
| Nodes | GCP | AWS | ||
| 1-5 | N1-standard-1 | 1 vCPI 3.75GB | M3.medium | 1vCPU 3.75GB |
| 6-10 | N1-standard-2 | 2 vCPU 7.5GB | M3.large | 2vCU 7.5GB |
| 11-100 | N1-standard-4 | 4 vCPU 15GB | M3.xlarge | 4 vCPU 15GB |
| 101-250 | N1-standard-8 | 8 vCPU 30GB | M3.2xlarge | 8 vCPU 30GB |
| 251-500 | N1-standard-16 | 16 vCPU 60G | C4.4xlarge | 16 vCPU 30GB |
| > 500 | N1-standard-32 | 32 vCPU 120GB | C4.8xlarge | 36 vCPU 60GB |
Cloud or OnPrem?
- Use Kubeadm for on-prem
- GKE for GCP
- EKS for AWS
- AKS for Azure
Storage
- High Performance - SSD Backed Storage
- Multiple Concurrent connections - Network based storage
- Persistent shared volumes for shared access across multiple PODs
- Label nodes with specific disk types
- Use Node Selectors to assign applications to nodes with specific disk types
Nodes
- Virtual or Physical Machines
- Minimum of 4 Node Cluster (Size based on workload)
- Master vs Worker Nodes
- Linux x86_64 Architecture
- Master nodes can host workloads
- Best practice is to not host workloads on Master nodes
Master Nodes
'CKA &. CKAD > Design and Install a Kubernetes Cluster' 카테고리의 다른 글
| Instroduction to deployment with kubeadm (0) | 2021.04.01 |
|---|---|
| Kubernetes the Hard Way (0) | 2021.04.01 |
| Configure High Availability (0) | 2021.04.01 |
| Choosing Kubernetes Infrastructure (0) | 2021.04.01 |
