Kubernetes Cluster HA

[supereagle]

Architecture

Implementation

• Load balancer for apiserver
  • Nginx:
  • HAproxy:
  • LVS: High performance in large scale cluster.
• Controller manager & scheduler: Stateful application, only one instance is running at once, the others are standby.
  • leader election options: Default value of --leader-elect is false in v1.2.0, is true in v1.5.3+. There are some other options about leader election, such as --leader-elect-lease-duration, --leader-elect-renew-deadline, --leader-elect-retry-period.

References

• Building High-Availability Clusters
• Setting up High-Availability Kubernetes Masters on GCE
• Highly Available Kubernetes Clusters on GCE
• Kubernetes 1.6.0 高可靠集群部署
• Kubernetes Master High Availability 高级实践