Atomic updates are used with file-based resources to help ensure that file updates can be made when updating a binary or if disk space runs out.
Atomic updates are enabled by default. They can be managed globally
using the file_atomic_update setting in the client.rb file. They can
be managed for each resource using the atomic_update property
that is available with the cookbook_file, file,
remote_file, and template resources.
Note
On certain platforms, and after a file has been moved into place, Chef
Infra Client may modify file permissions to support features specific to
those platforms. On platforms with SELinux enabled, Chef Infra Client
will fix up the security contexts after a file has been moved into the
correct location by running the restorecon command. On the Microsoft
Windows platform, Chef Infra Client will create files so that ACL
inheritance works as expected.