1.下载安装包

https://golang.org/dl/

2.解压到 /usr/local

tar -C /usr/local -xzf go1.14.linux-amd64.tar.gz

3.配置环境变量

vi /etc/profile 

export GOROOT=/usr/local/go
export PATH=$PATH:$GOROOT/bin
export GOPATH=/root/go
export PATH=$PATH:$GOPATH/BIN

source /etc/profile

4.设置代理

go env -w GO111MODULE=on
go env -w GOPROXY=https://goproxy.io,direct