查看防火墙开放端口号

sudo firewall-cmd --list-all

1、node服务发布端口号设置为开放的端口号。
2、或者开发node服务的端口号。

[root@iZ2ze3fl8hjlr01p1aq6oxZ privacy]# sudo firewall-cmd --list-all
public (active)
  target: default
  icmp-block-inversion: no
  interfaces: eth0
  sources: 
  services: cockpit dhcpv6-client ssh
  ports: 20/tcp 21/tcp 22/tcp 80/tcp 443/tcp 40976/tcp 39000-40000/tcp
  protocols: 
  forward: no
  masquerade: no
  forward-ports: 
  source-ports: 
  icmp-blocks: 
  rich rules: