I use Open VPN on a Centos 7 server and the open-vpn package needs to be updated after a little over a year since its install.
The update can be done fairly easily (using yum) but I'm worried this might mess things up (in my server-side VPN configuration for example).
The server is currently used for important projects and even if I can afford to take a few days right now to perform some adjustments, if the VPN connection is broken I will loose the only entry point to the server (which will probably mean the server will be unavailable for work for a little time until I fix or reinstall the server).