Home / server / Questions / 1002323
In Process
uav
Asked: 2020-02-09 08:56:15 +0800 CST

Include own/external etcd cluster in kubeadm init

  • 772

I have a running etcd cluster with five members (Own etcd cluster for Kubernetes). How can I include this in the kubeadm init command? My idea is that I generate the configuration, edit it manually and then run it. In theory, these are two commands, but I don't know exactly what they are.

kubernetes etcd

1 Answers

  1. You need to create a Kind ClusterConfiguration in which you need to add the etcd config.

    apiVersion: kubeadm.k8s.io/v1beta2
kind: ClusterConfiguration
kubernetesVersion: stable
controlPlaneEndpoint: "LOAD_BALANCER_DNS:LOAD_BALANCER_PORT"
etcd:
    external:
        endpoints:
        - https://ETCD_0_IP:2379
        - https://ETCD_1_IP:2379
        - https://ETCD_2_IP:2379
        caFile: /etc/kubernetes/pki/etcd/ca.crt
        certFile: /etc/kubernetes/pki/apiserver-etcd-client.crt
        keyFile: /etc/kubernetes/pki/apiserver-etcd-client.key

    Remember to replace following variables with values for your cluster:

    • LOAD_BALANCER_DNS
    • LOAD_BALANCER_PORT
    • ETCD_0_IP
    • ETCD_1_IP
    • ETCD_2_IP

    Once done you can init those using kubeadm init --config kubeadm-config.yaml --upload-certs

    You can also have a look at Kubernetes The Hard Way.

    • 2