K8s

K8s

1. Capabilities of Enterprise Container Orchestration tool

   • Automatic Deployment
   • Scaling
   • Operations of Containers

2. Why

   • Quickly Deploy
   • Scale
   • Rollout new features
   • Optimize resources

3. Where it fits

   • Service with following characteristics
     • Variable no of pods, consumes fixed amount of compute
     • exposed to External Load Balancer
     • Consumes compute elastically
     • Stores data on persistent storage
     • Discovers other services e.g DNS

4. Container Scheduling

   • distribute containers across host
     • Affinity Rules
     • Availability zones/Region

5. Container Management

   • Image Management
     • Deployment Object
       • Defines Desired State
       • Defines Replica set
       • Rollbacks/upgrade Pod Image
   • Image Isolation
     • RBAC
       • Namespaces
         • Multi-tenancy
         • Specify constraints (limits)
         • Policies to ensure appropriate authority to trusted users
     • Content Signining
   • Auto Scale

6. Service Endpoints

   • LB, Replica sets and should Auto scale
   • Critical for appln availability

7. External Endpoints

   • to retain application state
     • Volumes/Database