The service startup is not working due to bugs in dcae2_install.sh:

1.missing parameter in NOFLOAT option

...
echo " address $DCAE_IP_ADDR" >> /etc/network/interfaces
...

$DCAE_IP_ADDR is not defined in script

2. wrong script call

...
chmod +x /opt/dcae2_vm_init.sh
chmod +x /opt/dcae2_serv.sh
mv /opt/dcae2_serv.sh /etc/init.d
update-rc.d dcae_serv.sh defaults**

>> should be :
update-rc.d dcae2_serv.sh defaults**