6.2. Modifying a VM for a specific datasource after cloud-init has run

Procedure

1. Create and launch an instance for the OpenStack Platform. For information about creating instances for OpenStack, see Creating an instance. In this example, the virtual machine (VM) includes cloud-init, which runs upon boot of the VM.
2. Add or change directives. For example, modify the user-data.file file that is stored on the OpenStack HTTP server.

3. Clean the virtual machine:

   # rm -rf /etc/resolv.conf /run/cloud-init
   # userdel -rf cloud-user
   # hostnamectl set-hostname localhost.localdomain
   # rm /etc/NetworkManager/conf.d/99-cloud-init.conf

   注意

   You can save the cleaned image as a template image and use that image for multiple virtual machines. The new virtual machines run cloud-init, using your updated cloud-init configuration.

4. Rerun cloud-init or reboot the VM to implement the configuration changes you made. For details on re-running cloud-init, see Re-run cloud-init.