trymcp-day01-image/files/etc/rc.local

#!/bin/sh -e
#
# rc.local
#
# This script is executed at the end of each multiuser runlevel.
# Make sure that the script will "exit 0" on success or any other
# value on error.
#
# In order to enable or disable this script just change the execution
# bits.
#
# By default this script does nothing.

update_from_metadata_fields() {
    local metadataIp="169.254.169.254"
    local metadataFiels=$(curl -s --connect-timeout 5 169.254.169.254/openstack/latest/meta_data.json | jq -r .meta)
    if [ -n "${metadataFiels}" ]; then
        local dmz=$(echo ${metadataFiels} | jq -r .dmz)
        if [ "${dmz}" == "true" ]
            local dmzGateway=$(echo ${metadataFiels} | jq -r .dmz_gateway)
            if [ -n "${dmzGateway}" ]; then
                local curDefault=$(ip r | grep 'default via' | cut -f 3 -d ' ')
                if [ "${curDefault}" != "${dmzGateway}" ]; then
                    ip r del default
                    ip r add default via ${dmzGateway}
                fi
            fi
        fi
    fi
}

if [ ! -f /tmp/bootstrap_interfaces ] && [ -d /srv/salt/reclass/nodes/_generated ]; then
  sed -i "s/single_address:.*/single_address: $(hostname -I | cut -d ' ' -f 1)/g" /srv/salt/reclass/nodes/cfg01.*
  touch /tmp/bootstrap_interfaces
fi

update_from_metadata_fields || echo "Can't update settings from metadata fields"

exit 0