Koding MongoDB Cluster Stack Template

gistfile1.txt

# Here is your stack preview
# You can make advanced changes like modifying your VM,
# installing packages, and running shell commands.

provider:
  aws:
    access_key: '${var.aws_access_key}'
    secret_key: '${var.aws_secret_key}'
resource:
  aws_instance:
    replica_1:
      instance_type: m4.large
      ami: ''
      tags:
        Name: '${var.koding_user_username}-${var.koding_group_slug}'
      user_data: |-
        export DEBIAN_FRONTEND=noninteractive
        apt-get update -y
        apt-get -y install mongodb
        echo "replSet = rs0" >> /etc/mongodb.conf
        export PRIVATE_IP=`ip addr | grep -Po '(?!(inet 127.\d.\d.1))(inet \K(\d{1,3}\.){3}\d{1,3})'`
        sed -i "s/127.0.0.1/$PRIVATE_IP/" /etc/mongodb.conf
        sed -i 's/#port/port/' /etc/mongodb.conf
        service mongodb restart
        date
        echo "Sleeping 5 minutes..."
        sleep 300
        date
        export PRIVATE_IP=`ip addr | grep -Po '(?!(inet 127.\d.\d.1))(inet \K(\d{1,3}\.){3}\d{1,3})'`
        mongo `echo $PRIVATE_IP` --eval "rs.initiate()"
        sleep 120
        mongo `echo $PRIVATE_IP` --eval "rs.add('${aws_instance.replica_2.private_ip}')"
        mongo `echo $PRIVATE_IP` --eval "rs.add('${aws_instance.replica_3.private_ip}')"
    replica_2:
      instance_type: m4.large
      ami: ''
      tags:
        Name: '${var.koding_user_username}-${var.koding_group_slug}'
      user_data: |-
        export DEBIAN_FRONTEND=noninteractive
        apt-get update -y
        apt-get -y install mongodb
        echo "replSet = rs0" >> /etc/mongodb.conf
        export PRIVATE_IP=`ip addr | grep -Po '(?!(inet 127.\d.\d.1))(inet \K(\d{1,3}\.){3}\d{1,3})'`
        sed -i "s/127.0.0.1/$PRIVATE_IP/" /etc/mongodb.conf
        sed -i 's/#port/port/' /etc/mongodb.conf
        service mongodb restart
    replica_3:
      instance_type: m4.large
      ami: ''
      tags:
        Name: '${var.koding_user_username}-${var.koding_group_slug}'
      user_data: |-
        export DEBIAN_FRONTEND=noninteractive
        apt-get update -y
        apt-get -y install mongodb
        echo "replSet = rs0" >> /etc/mongodb.conf
        export PRIVATE_IP=`ip addr | grep -Po '(?!(inet 127.\d.\d.1))(inet \K(\d{1,3}\.){3}\d{1,3})'`
        sed -i "s/127.0.0.1/$PRIVATE_IP/" /etc/mongodb.conf
        sed -i 's/#port/port/' /etc/mongodb.conf
        service mongodb restart

another way to get the private ip

PRIVATE_IP=curl http://169.254.169.254/latest/meta-data/local-ipv4