opennebula-nodeweaver-elastic-ip-configuration.sh

#! /bin/bash
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## NodeWeaver/OpenNebula Packet.net Elastic IP VNet Manager
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# Author: Lorenzo Faleschini (lorenzo.faleschini@nordeweaver.eu)
# © NodeWeaver 2019
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# Assumes that on br1 there's packet.net public IP interface (tested on NodeWeaver packet host configured in hybrid L3/L2 mode)
# just assign to this host a public IP block and run this script (works with IPv4 and IPv6)
# automatic creation of vNet will occour and you'll be able to access these IPs with vms sitting on this host.
# Unless you route interanlly the IPs with a virtual router you'll access the gateway for the IP blocks only on this host where you ran the script
# Note if you're running this script on a non-opennebula server, you should redirect the `one` commands via ssh to the opennebula server
######################################



ELASTIC_IP_LIST="$(curl -s https://metadata.packet.net/metadata | jq '.' | grep -B 5 -A 4 '"management": false,' | grep 'network\|cidr\|address\|netmask\|gateway\|public' |  awk '{print toupper($0)}' | sed 's/        //g' | sed 's/"//g' | sed 's/,//g' | sed 's/: /=/' | paste - - - - - - -  | tr -d '-' | tr ' ' ',' | sed -e 's/^ //' -e 's/,$//')"

echo "$ELASTIC_IP_LIST" > /tmp/elastic_ip_list

while read ELASTIC_IP; do
    echo $ELASTIC_IP | sed 's/ /\n/g' > /tmp/elastic_ip_settings
    source /tmp/elastic_ip_settings
    NETTYPE="$(if [ "$PUBLIC" = "TRUE" ]; then echo Public; else echo Private; fi)"
    NETNAME="Packet.net_Elastic_IPv"$ADDRESS_FAMILY"_"$NETTYPE"_"$(echo $NETWORK | sed -s 's/:/./g')"-"$CIDR""
    if [ "$ADDRESS_FAMILY" = "6" ]; then
        ARSIZE="$(expr $(/opt/bin/nwipcalc $NETWORK/$CIDR  | grep Hosts | awk {'print $4'}) - 1)"
        # avoid illegal AR size in One
        if [ "$CIDR" -lt "99" ]; then
            ARSIZE=999999999
        else
            ARSIZE="$(expr $(/opt/bin/nwipcalc $NETWORK/$CIDR  | grep Hosts | awk {'print $4'}) - 1)"
        fi
        echo '
        NAME="'$NETNAME'"
        DESCRIPTION="Auto generated VNet from Packet.net Elastic IP assignment"
        BRIDGE="br1"
        VN_MAD="fw"
        DNS="1.1.1.1 8.8.8.8"
        GATEWAY="'$GATEWAY'"
        NETWORK="'$NETWORK'"
        AR=[ TYPE = "IP'$ADDRESS_FAMILY'", GLOBAL_PREFIX = "'$ADDRESS'", SIZE = "'$ARSIZE'"]
        ' > /tmp/$NETNAME
        su -c 'onevnet create /tmp/'$NETNAME'' admin > /dev/null 2>&1
        ip -6 addr add $GATEWAY/$CIDR dev br1 > /dev/null 2>&1
    else
        ARSIZE="$(expr $(/opt/bin/nwipcalc $NETWORK/$CIDR  | grep Hosts | awk {'print $2'}) - 1)"
        echo '
        NAME="'$NETNAME'"
        DESCRIPTION="Auto generated VNet from Packet.net Elastic IP assignment"
        BRIDGE="br1"
        VN_MAD="fw"
        DNS="1.1.1.1 8.8.8.8"
        GATEWAY="'$GATEWAY'"
        NETWORK="'$NETWORK'"
        AR=[ TYPE = "IP'$ADDRESS_FAMILY'", IP = "'$ADDRESS'", SIZE = "'$ARSIZE'"]
        ' > /tmp/$NETNAME
        su -c 'onevnet create /tmp/'$NETNAME'' admin > /dev/null 2>&1
        ip addr add $GATEWAY/$CIDR dev br1  > /dev/null 2>&1
    fi
done < /tmp/elastic_ip_list