一:下載etcd安裝包
etcd-v3.4.7-windows-amd64
二:在etcd的壓縮文件內創建3個啟動配置文件
配置內容如下
.\etcd.exe --name etcd01 ^ --data-dir .\data\etcd01 ^ --advertise-client-urls http://127.0.0.1:2379 ^ --listen-client-urls http://127.0.0.1:2379 ^ --listen-peer-urls http://127.0.0.1:2380 ^ --initial-advertise-peer-urls http://127.0.0.1:2380 ^ --initial-cluster-token etcd-cluster-1 ^ --initial-cluster etcd01=http://127.0.0.1:2380,etcd02=http://127.0.0.1:2381,etcd03=http://127.0.0.1:2382 ^ --initial-cluster-state new pause
.\etcd.exe --name etcd02 ^ --data-dir .\data\etcd02 ^ --advertise-client-urls http://127.0.0.1:3379 ^ --listen-client-urls http://127.0.0.1:3379 ^ --listen-peer-urls http://127.0.0.1:2381 ^ --initial-advertise-peer-urls http://127.0.0.1:2381 ^ --initial-cluster-token etcd-cluster-1 ^ --initial-cluster etcd01=http://127.0.0.1:2380,etcd02=http://127.0.0.1:2381,etcd03=http://127.0.0.1:2382 ^ --initial-cluster-state new pause
三:查看節點狀態
etcdctl.exe --write-out=table --endpoints=http://127.0.0.1:2379,http://127.0.0.1:3379,http://127.0.0.1:4379 endpoint status
+-----------------------+------------------+---------+---------+-----------+------------+-----------+------------+--------------------+--------+
| ENDPOINT | ID | VERSION | DB SIZE | IS LEADER | IS LEARNER | RAFT TERM | RAFT INDEX | RAFT APPLIED INDEX | ERRORS | +-----------------------+------------------+---------+---------+-----------+------------+-----------+------------+--------------------+--------+ | http://127.0.0.1:2379 | bf9071f4639c75cc | 3.4.4 | 115 kB | true | false | 13 | 99 | 99 | | | http://127.0.0.1:3379 | e7b968b9fb1bc003 | 3.4.4 | 115 kB | false | false | 13 | 99 | 99 | | | http://127.0.0.1:4379 | 19ac17627e3e396f | 3.4.4 | 106 kB | false | false | 13 | 99 | 99 | | +-----------------------+------------------+---------+---------+-----------+------------+-----------+------------+--------------------+--------+
etcd啟動
線上etcd和本地啟動有講究了，如果etcd是單獨的服務器，那么在不加任何參數的情況下直接啟動，那基本是調不通的。
$ ./service --registry=etcd --registry_address=xx.xx.xx.xx:2379
2020-03-17 17:04:42 Starting [service] go.micro.srv.user
2020-03-17 17:04:42 Server [grpc] Listening on [::]:48493
2020-03-17 17:04:42 Registry [etcd] Registering node: go.micro.srv.user-f32a2950-8e59-44d4-ac86-f4e1ec103395
{"level":"warn","ts":"2020-03-17T17:04:47.849+0800","caller":"clientv3/retry_interceptor.go:61","msg":"retrying of unary invoker failed","target":"endpoint://client-e45decee-12bf-4a9b-a7ab-f92eece39420/xx.xx.xx.xx:2379","attempt":0,"error":"rpc error: code = DeadlineExceeded desc = latest connection error: connection error: desc = \"transport: Error while dialing dial tcp xx.xx.xx.xx:2379: connect: connection refused\""} 2020-03-17 17:04:47 Server register error: %!(EXTRA context.deadlineExceededError=context deadline exceeded)
這就是錯誤示例，etcd拒絕連接。 為了能順利看到勝利的結果，需要這樣啟動etcd:
$ ./etcd --listen-client-urls http://0.0.0.0:2379 --advertise-client-urls http://0.0.0.0:2379 --listen-peer-urls http://0.0.0.0:2380 --initial-advertise-peer-urls http://0.0.0.0:2380 --initial-cluster my-etcd-1=http://0.0.0.0:2380
將ip為0.0.0.0可以理解為不限制連接機器（真正的生產不推薦這樣設置）。 服務啟動參數--registry_address=xx.xx.xx.xx:2379不能帶http://。
詳細go-micro使用etcd服務注冊發現鏈接:https://github.com/yuedun/micro-service/blob/master/README.md