In CentOS 7, you can use the NetworkManager service to run a script when a network interface is brought up. The NetworkManager service provides a number of hooks that can be used to execute scripts at different points in the network configuration process.<\/p>\n
Here’s an example of how you can use the NetworkManager service to run a script when a network interface is brought up:<\/p>\n
my-script.sh<\/code> you can create it in the \/etc\/NetworkManager\/dispatcher.d\/<\/code> directory.<\/li>\n<\/ol>\n\n<\/div>\n#!\/bin\/bash<\/span>
\n# your commands here<\/span>
\n<\/code><\/div>\n<\/div>\n\n- Make the script executable:<\/li>\n<\/ol>\n\n<\/div>\n
chmod<\/span> +x \/etc\/NetworkManager\/dispatcher.d\/my-script.sh
\n<\/code><\/div>\n<\/div>\n\n- The NetworkManager service will execute all scripts in the
\/etc\/NetworkManager\/dispatcher.d\/<\/code> directory that have a name of the form *.sh<\/code> when a network interface is brought up.<\/li>\n- When the script is run, NetworkManager will pass the name of the interface as the first argument.<\/li>\n
- If the script exits with a non-zero exit code, NetworkManager will log an error message but will otherwise continue to operate normally.<\/li>\n<\/ol>\n
Please note that the above instructions are based on the assumption that NetworkManager is being used as the network management service on your system. If your system is using a different service, the instructions may vary.<\/p>\n
Also, you can check the script by bringing the network interface up manually using ifup<\/code> command.<\/p>\n