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kubekey/docs/ha-mode.md
24sama 13e589e886 dev-v2.0.0: update ha-mode pic 
Signed-off-by: 24sama <leo@kubesphere.io>
2021-11-19 10:36:30 +08:00

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HA mode (internal loadbalancing)

K8s components require a loadbalancer to access the apiservers via a reverse proxy. Kubekey provides an internal ha mode. The way kubekey uses is referred to as localhost loadbalancing. The kubelet of each master node connects the local kube-apiserver, and the kubelet of each worker node connects the kube-apiserver via a local reverse proxy. Based on this, kubekey will deploy a haproxy-based proxy that resides on each worker node as the local reverse proxy.

Image

Usage

Modify your configuration file and uncomment the item internalLoadbalancer:

controlPlaneEndpoint:
    ##Internal loadbalancer for apiservers
    internalLoadbalancer: haproxy
    
    domain: lb.kubesphere.local
    address: ""
    port: 6443

Then whether you exec the command create cluster, add nodes or upgrade, kubekey will enable HA mode and deploy the interanl load balancer.