Why does cloudbase-init run at startup each time the server reboots?

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I've used the vmware documentation to install cloudbase-init, and everything runs fine when the machine boots up. However, after a reboot, the ovf-env.xml file is still mounted and the cloudbase-init script runs again. How can I achieve getting this to only run once during initial boot?

https://blogs.vmware.com/management/2...