Add several NixOS hosts on Proxmox and Oracle Cloud

scripts/server1/update-resolv-conf

@@ -0,0 +1,45 @@
+#! /usr/bin/env bash
+foreign_option_1='dhcp-option DNS 209.222.18.222'
+foreign_option_2='dhcp-option DNS 209.222.18.218'
+foreign_option_3='dhcp-option DNS 8.8.8.8'
+
+[ -x /sbin/resolvconf ] || exit 0
+[ "$script_type" ] || exit 0
+[ "$dev" ] || exit 0
+
+split_into_parts()
+{
+        part1="$1"
+        part2="$2"
+        part3="$3"
+}
+
+case "$script_type" in
+  up)
+        NMSRVRS=""
+        SRCHS=""
+        for optionvarname in ${!foreign_option_*} ; do
+                option="${!optionvarname}"
+                echo "$option"
+                split_into_parts $option
+                if [ "$part1" = "dhcp-option" ] ; then
+                        if [ "$part2" = "DNS" ] ; then
+                                NMSRVRS="${NMSRVRS:+$NMSRVRS }$part3"
+                        elif [ "$part2" = "DOMAIN" ] ; then
+                                SRCHS="${SRCHS:+$SRCHS }$part3"
+                        fi
+                fi
+        done
+        R=""
+        [ "$SRCHS" ] && R="search $SRCHS
+"
+        for NS in $NMSRVRS ; do
+                R="${R}nameserver $NS
+"
+        done
+        echo -n "$R" | /sbin/resolvconf -a "${dev}.openvpn"
+        ;;
+  down)
+        /sbin/resolvconf -d "${dev}.openvpn"
+        ;;
+esac