How to resolve the issue of a disconnected Centos virtual machine?

There could be many reasons for virtual machine network disconnection, you can try to solve the problem by following these steps: 1. Check network connection: Ensure that the network connection on your physical host machine is working properly. If other devices are connecting fine, it may be a virtual machine network settings issue. 2. Check network settings: In the virtual machine, open network settings and confirm that the configuration of the network adapter is correct. If using bridged mode, make sure the virtual machine’s network adapter is connected to the host machine’s network adapter. 3. Check virtual network adapter: In the virtual machine, check the status and settings of the network adapter. Ensure that the virtual network adapter is enabled and correctly connected to the host machine’s network adapter. 4. Restart virtual machine network service: Run the following command in the terminal to restart the virtual machine’s network service.

sudo systemctl restart network

5. Verify network configuration file: Check the network configuration file of the CentOS virtual machine to ensure the settings are correct. The configuration file is usually located in the /etc/sysconfig/network-scripts/ directory, where you can use an editor to open and make necessary modifications.

6. Check network firewall: If the firewall is turned on, it may be blocking network connections. You can try disabling the firewall or adding specific rules to allow the connections. If the issue persists after trying the above methods, it may be a more complex configuration or hardware problem. You can attempt to restart the virtual machine or reinstall the operating system. If the problem continues, it is advisable to seek assistance from a network administrator or technical support from the virtual machine provider.