[Unit]
Description=Samba AD server
After=network.target winbindd.service
Conflicts=nmbd.service smbd.service

[Service]
Type=forking
PIDFile=/var/run/samba/samba.pid
LimitNOFILE=16384
ExecStart=/usr/sbin/samba -D 
ExecReload=/bin/kill -HUP $MAINPID

[Install]
WantedBy=multi-user.target