etcd恢复备份-自己的研究做了改进成功了，官网的没成功不知道为何

因为在生产中直接拷贝DB比较方便且也比较符合生产中的实际情况，所以我用的是直接拷贝db数据的方式，所以恢复数据的时候加了参数  --skip-hash-check

恢复数据：

ETCDCTL_API=3 ./etcdctl snapshot restore ../db \

  --name m1 \
  --initial-cluster m1=http://192.168.75.145:2380,m2=http://192.168.75.145:3380,m3=http://192.168.75.145:4380 \
  --initial-cluster-token etcd-cluster-1 \
  --initial-advertise-peer-urls http://192.168.75.145:2380 \
  --skip-hash-check
  
ETCDCTL_API=3 ./etcdctl snapshot restore ../db \
  --name m2 \
  --initial-cluster m1=http://192.168.75.145:2380,m2=http://192.168.75.145:3380,m3=http://192.168.75.145:4380 \
  --initial-cluster-token etcd-cluster-1 \
  --initial-advertise-peer-urls http://192.168.75.145:3380 \
  --skip-hash-check
  
ETCDCTL_API=3 ./etcdctl snapshot restore ../db \
  --name m3 \
  --initial-cluster m1=http://192.168.75.145:2380,m2=http://192.168.75.145:3380,m3=http://192.168.75.145:4380 \
  --initial-cluster-token etcd-cluster-1 \
  --initial-advertise-peer-urls http://192.168.75.145:4380 \
  --skip-hash-check
  
 创建集群：（绿色的是官网的做法，一直没成功，执行etcdctl命令总是出现Error:  grpc: timed out when dialing。实在没把发，我用了写出全部参数的方法成功）
./etcd \
  --name m1 \
  --listen-client-urls http://192.168.75.145:2379 \
  --advertise-client-urls http://192.168.75.145:2379 \
  --listen-peer-urls http://192.168.75.145:2380 
  
 ./etcd --name m1 --initial-advertise-peer-urls http://192.168.75.145:2380 \
  --listen-peer-urls http://192.168.75.145:2380 \
  --listen-client-urls http://192.168.75.145:2379,http://127.0.0.1:2379 \
  --advertise-client-urls http://192.168.75.145:2379 \
  --initial-cluster-token etcd-cluster-1 \
  --initial-cluster m1=http://192.168.75.145:2380,m2=http://192.168.75.145:3380,m3=http://192.168.75.145:4380 \
  --initial-cluster-state new
  
./etcd \
  --name m2 \
  --listen-client-urls http://192.168.75.145:3379 \
  --advertise-client-urls http://192.168.75.145:3379 \
  --listen-peer-urls http://192.168.75.145:3380 
  
./etcd --name m2 --initial-advertise-peer-urls http://192.168.75.145:3380 \
  --listen-peer-urls http://192.168.75.145:3380 \
  --listen-client-urls http://192.168.75.145:3379,http://127.0.0.1:3379 \
  --advertise-client-urls http://192.168.75.145:3379 \
  --initial-cluster-token etcd-cluster-1 \
  --initial-cluster m1=http://192.168.75.145:2380,m2=http://192.168.75.145:3380,m3=http://192.168.75.145:4380 \
  --initial-cluster-state new
  
./etcd \
  --name m3 \
  --listen-client-urls http://192.168.75.145:4379 \
  --advertise-client-urls http://192.168.75.145:4379 \
  --listen-peer-urls http://192.168.75.145:4380 
  
 ./etcd --name m3 --initial-advertise-peer-urls http://192.168.75.145:4380 \
  --listen-peer-urls http://192.168.75.145:4380 \
  --listen-client-urls http://192.168.75.145:4379,http://127.0.0.1:4379 \
  --advertise-client-urls http://192.168.75.145:4379 \
  --initial-cluster-token etcd-cluster-1 \
  --initial-cluster m1=http://192.168.75.145:2380,m2=http://192.168.75.145:3380,m3=http://192.168.75.145:4380 \
  --initial-cluster-state new