ansible_cloud

Ansible Playbooks for setting up cloud services such as Mesos, Docker and Kubernetes.

Most of the stuff for Marathon, Mesos and Zookeeper is copied from the AnsibleShipyard repositories with few or no tweaks.

To try it out do:

1. Configure ~/.boto as described in Boto Config:

   [Credentials]
   aws_access_key_id = <your_access_key_here>
   aws_secret_access_key = <your_secret_key_here>
   

2. Copy the ec2.inifile to /etc/ansible/ec2.ini.

3. Add your *.pem file to the ssh-agent:

   $ ssh-agent bash 
   $ ssh-add ~/.ssh/keypair.pem 
   

4. The AWS Command Line Interface must be installed, configured and the aws executable be on the path. Used (until Ansible 2.2 is released) to create the NAT gateway.

5. Run the playbook as ansible-playbook -i ec2.py main.yml to set up the EC2 instances.

6. Run the playbook as ansible-playbook -i ec2.py provision_cluster.yml to provision the instances with Mesos, Docker, Zookeeper etc.

Environment variables

The following environment varibles can be configured for Ansible lookup

AWS

• AWS_EC2_KEY_PAIR: the name of the key pair to use when provisioning the cluster (EC2 instances etc.).
• AWS_EC2_LB_CERT: the arn resource for the AWS ELB certificate.
• AWS_S3_ELB_LOGS_BUCKET_NAME: the name of the S3 bucket where to store the ELB logs.

DC/OS

• DCOS_CONTROLLER_INSTALL_DEMOS: true - install demo(s) (default), false - skip demo installation.

Demos

• DCOS_CONTROLLER_INSTALL_DEMO_SD_AND_LB_NGINX: true - install demo setting up Nginx as described in Service discovery and load balancing with DCOS and marathon-lb: Part 1.
• DCOS_CONTROLLER_INSTALL_TUTUM_HELLO_WORLD: true - install Tutum hello-world demo.

Run a Docker container on Marathon

To run a Docker container on Marathon:

docker.json

{
  "id": "tutum-hello-world",
  "cpus": 0.2,
  "mem": 20.0,
  "instances": 1,
  "container": {
    "type": "DOCKER",
    "docker": {
      "image": "tutum/hello-world",
      "network": "BRIDGE",
      "portMappings": [
        { "containerPort": 80, "hostPort": 0, "servicePort": 0, "protocol": "tcp" }
      ]
    }
  }
}

Post the container defintion to Marathon: curl -X POST localhost:8080/v2/apps -d @Desktop\docker.json -H "Content-type: application/json".