etcd集群安装（三节点）
安装视频：https://www.bilibili.com/video/BV1844y1Q7Me?p=5
安装包地址：https://github.com/etcd-io/etcd/releases/tag/v3.4.3
etcd --name infra1 --listen-client-urls http://192.168.43.104:12379 --advertise-client-urls http://192.168.43.104:12379 --listen-peer-urls http://192.168.43.104:12380 --initial-advertise-peer-urls http://192.168.43.104:12380 --initial-cluster-token etcd-cluster-1 --initial-cluster 'infra1=http://192.168.43.104:12380,infra2=http://192.168.43.105:22380,infra3=http://192.168.43.106:32380' --initial-cluster-state new
etcd --name infra2 --listen-client-urls http://192.168.43.105:22379 --advertise-client-urls http://192.168.43.105:22379 --listen-peer-urls http://192.168.43.105:22380 --initial-advertise-peer-urls http://192.168.43.105:22380 --initial-cluster-token etcd-cluster-1 --initial-cluster 'infra1=http://192.168.43.104:12380,infra2=http://192.168.43.105:22380,infra3=http://192.168.43.106:32380' --initial-cluster-state new
etcd --name infra3 --listen-client-urls http://192.168.43.106:32379 --advertise-client-urls http://192.168.43.106:32379 --listen-peer-urls http://192.168.43.106:32380 --initial-advertise-peer-urls http://192.168.43.106:32380 --initial-cluster-token etcd-cluster-1 --initial-cluster 'infra1=http://192.168.43.104:12380,infra2=http://192.168.43.105:22380,infra3=http://192.168.43.106:32380' --initial-cluster-state new
验证：
etcdctl --endpoints=192.168.43.104:12379 put name fox
etcdctl --endpoints=192.168.43.104:12379 get name
etcdctl --endpoints=192.168.43.105:22379 get name
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