+ # fai-setup expert mode avoids writing to /var/log/fai/variables
+ # at least config_src is needed for autodiscover
+ $sed '/^FAI_CONFIGDIR|^FAI_CONFIG_SRC|^LOGUSER/d' /var/log/fai/variables
+ tee -a /var/log/fai/variables <<'EOF'
+LOGUSER=fai
+FAI_CONFIGDIR=/srv/fai/config
+FAI_CONFIG_SRC=nfs://faiserver/srv/fai/config
+EOF