configure shared ip and install lelastic

lelastic.sh

#!/bin/bash

# add ip to system
host=$(sudo hostname | cut -d'.' -f1)
sudo vim /etc/network/interfaces.d/$host
sudo ifdown lo && sudo ip addr flush lo && sudo ifup lo

# install lelastic
version=v0.0.6
curl -LO https://github.com/linode/lelastic/releases/download/$version/lelastic.gz
gunzip lelastic.gz
chmod 755 lelastic
sudo mv lelastic /usr/local/bin/