There were a few wrinkles.
Sleep.
We delegated the server setup to an intern so they could learn how to set up the machine, they forgot to turn off sleep so the server was oddly unresponsive for the first week or so of testing.
Updates.
Macs like updating, and they seem to use RAM to do so. If you don't update the server you can have a significant chunk of your RAM hanging out waiting for you to do the update. We haven't figured out how to accept XCode downloads from the apple store, so this means we had to learn how to turn on VNC.
Turning on VNC
sudo /System/Library/CoreServices/RemoteManagement/ARDAgent.app/Contents/Resources/kickstart -activate -configure -access -on -clientopts -setvnclegacy -vnclegacy yes -clientopts -setvncpw -vncpw mypasswd -restart -agent -privs -all
Turning off VNC
sudo /System/Library/CoreServices/RemoteManagement/ARDAgent.app/Contents/Resources/kickstart -deactivate -configure -access -off
Using pm2 vs forever
At the same time we did the upgrade, we decided wouldn't it be nice to have a new node process manager? So we switched our webservices to use pm2. After a month of sleep like behavior, after we had solved the sleep like behavior, we decided maybe switching process managers at the same time as switching OS was a bad idea. We switched back to forever and now the server is almost normal.
These were a few reasons why we regret using the Mac server instead of formatting it with Linux, although now that its sort of stable with ~97% uptime we aren't planning formatting it just yet.
