Windows cannot connect to the solution of the MongoDB Docker container in the virtual machine

background

• The Docker container running MongoDB in the CentOS of the virtual machine Virtual Box

  docker run -p 27017:27017 \ 
  --name mongodbinstance \ 
  --network bridge \ 
  -v $PWD/mongodb-data:/data/db \
  -d mongo
  

• Open CentOS 27017 port

  # 放行 27017 TCP 端口
  firewall-cmd --add-port 27017/tcp --zone=public --permanent
  # 重载配置
  firewall-cmd --reload
  

question

• The MongoDB Docker container of the virtual machine cannot be connected with telnet from Windows

  # 端口不通
  telnet 192.168.56.103 27017
  

• Can't connect with MongoDB GUI client
  (MongoDB GUI client: DMS https://dms.aliyun.com/static/html/download.htm)

solve

• Reference https://blog.csdn.net/qq_39354140/article/details/129072064
• Modify ipv4 forwarding status, add net.ipv4.ip_forward = 1

  vi /usr/lib/sysctl.d/00-system.conf
  

  net.ipv4.ip_forward = 1

  # 重启网络
  systemctl restart network
  

verify

• Windows successfully connects to 27017 with telnet
• MongoDB GUI client consecutive success