Linux普通用户使用端口限制问题 只能用1024以上端口的问题

执行某条docker命令 需要监听80端口 报错如下

cannot expose privileged port 80, you can add 'net.ipv4.ip_unprivileged_port_start=80' to /etc/sysctl.conf (currently 443), or set CAP_NET_BIND_SERVICE on rootlesskit binary, or choose a larger port number (>= 443): listen tcp4 0.0.0.0:80: bind: permission denied

1. 编辑 sudo vi /etc/sysctl.conf
   加入net.ipv4.ip_unprivileged_port_start=80
2. 生效 sudo sysctl -p 即可