Setup - Manual
Setup - Manual
wget -q --https-only "https://github.com/coreos/etcd/releases/download/v3.3.9/etcd-v3.3.9-linux-amd64.tar.gz"
ExecStart=/usr/local/bin/etcd \\
--name ${ETCD_NAME} \\
--cert-file=/etc/etcd/kubernetes.pem \\
--key-file=/etc/etcd/kubernetes-key.pem \\
--peer-cert-file=/etc/etcd/kubernetes.pem \\
--peer-key-file=/etc/etcd/kubernetes-key.pem \\
--trusted-ca-file=/etc/etcd/ca.pem \\
--peer-trusted-ca-file=/etc/etcd/ca.pem \\
--peer-client-cert-auth \\
--client-cert-auth \\
--initial-advertise-peer-urls https://${INTERNAL_IP}:2380 \\
--listen-peer-urls https://${INTERNAL_IP}:2380 \\
--listen-client-urls https://${INTERNAL_IP}:2379,https://127.0.0.1:2379 \\
--advertise-client-urls https://${INTERNAL_IP}:2379 \\
--initial-cluster-token etcd-cluster-0 \\
--initial-cluster controller-0=https://${CONTROLLER0_IP}:2380,controller-1=https://${CONTROLLER1_IP}:2380 \\
--initial-cluster-state new \\
--data-dir=/var/lib/etcd
Setup - kubeadm
$ kubectl get pods -n kube-system NAMESPACE NAME READY STATUS RESTARTS AGE kube-system coredns-78fcdf6894-prwvl 1/1 Running 0 1h kube-system coredns-78fcdf6894-vqd9w 1/1 Running 0 1h kube-system etcd-master 1/1 Running 0 1h kube-system kube-apiserver-master 1/1 Running 0 1h kube-system kube-controller-manager-master 1/1 Running 0 1h kube-system kube-proxy-f6k26 1/1 Running 0 1h kube-system kube-proxy-hnzsw 1/1 Running 0 1h kube-system kube-scheduler-master 1/1 Running 0 1h kube-system weave-net-924k8 2/2 Running 1 1h kube-system weave-net-hzfcz 2/2 Running 1 1h NAMESPACE NAME READY STATUS RESTARTS AGE kube-system coredns-78fcdf6894-prwvl $ kubectl exec etcd-master –n kube-system etcdctl get / --prefix –keys-only /registry/apiregistration.k8s.io/apiservices/v1. /registry/apiregistration.k8s.io/apiservices/v1.apps /registry/apiregistration.k8s.io/apiservices/v1.authentication.k8s.io /registry/apiregistration.k8s.io/apiservices/v1.authorization.k8s.io /registry/apiregistration.k8s.io/apiservices/v1.autoscaling /registry/apiregistration.k8s.io/apiservices/v1.batch /registry/apiregistration.k8s.io/apiservices/v1.networking.k8s.io /registry/apiregistration.k8s.io/apiservices/v1.rbac.authorization.k8s.io /registry/apiregistration.k8s.io/apiservices/v1.storage.k8s.io /registry/apiregistration.k8s.io/apiservices/v1beta1.admissionregistration.k8s.io
Explore ETCD
$ kubectl exec etcd-master –n kube-system etcdctl get / --prefix –keys-only /registry/apiregistration.k8s.io/apiservices/v1. /registry/apiregistration.k8s.io/apiservices/v1.apps /registry/apiregistration.k8s.io/apiservices/v1.authentication.k8s.io /registry/apiregistration.k8s.io/apiservices/v1.authorization.k8s.io /registry/apiregistration.k8s.io/apiservices/v1.autoscaling /registry/apiregistration.k8s.io/apiservices/v1.batch /registry/apiregistration.k8s.io/apiservices/v1.networking.k8s.io /registry/apiregistration.k8s.io/apiservices/v1.rbac.authorization.k8s.io /registry/apiregistration.k8s.io/apiservices/v1.storage.k8s.io /registry/apiregistration.k8s.io/apiservices/v1beta1.admissionregistration.k8s.io
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