So, I had a fresh install of Ubuntu Server 18.04,everything worked fine till I reboot it today. Now there's no network interfaces except the loopback(lo). if I do 'ifconfig -a' I see my other network interfaces. Looked around online and there's posts about using 'Netplan', which is what I had used to give my server a static IP address. the .yaml config is still there and everything.
I can't run 'netplan apply' as it says the command isn't found. Anything else I find is about older version of Ubuntu Server, that I did try(editing /etc/network/interfaces/, doing another .yaml file)
I'm at a loss since nothing else I search for helps me, it ends up being the same things. Does anyone have any suggestions?