3.etcd存取

~~~ package main import ( "context" "fmt" "github.com/coreos/etcd/clientv3" "time" ) func main() { cli, err := clientv3.New(clientv3.Config{ Endpoints: []string{"localhost:2379", "localhost:22379", "localhost:32379"}, DialTimeout: 5 * time.Second, }) if err != nil { fmt.Println("connect failed, err:", err) return } fmt.Println("connect succ") defer cli.Close() //设置1秒超时，访问etcd有超时控制 ctx, cancel := context.WithTimeout(context.Background(), time.Second) //操作etcd _, err = cli.Put(ctx, "/logagent/conf/", "sample_value") //操作完毕，取消etcd cancel() if err != nil { fmt.Println("put failed, err:", err) return } //取值，设置超时为1秒 ctx, cancel = context.WithTimeout(context.Background(), time.Second) resp, err := cli.Get(ctx, "/logagent/conf/") cancel() if err != nil { fmt.Println("get failed, err:", err) return } for _, ev := range resp.Kvs { fmt.Printf("%s : %s\n", ev.Key, ev.Value) } } ~~~ 运行结果： ~~~ connect succ /logagent/conf/ : sample_value ~~~