magnum/magnum/templates/heat-mesos

A Mesos cluster with Heat

These Heat templates will deploy a Mesos cluster.

Requirements

OpenStack

These templates will work with the Kilo version of Heat.

Guest image

These templates will work with Ubuntu 14.04 base image with the following middleware pre-installed:

• docker
• zookeeper
• mesos
• marathon

Creating the stack

Creating an environment file local.yaml with parameters specific to your environment:

parameters:
  ssh_key_name: testkey
  external_network: public
  dns_nameserver: 8.8.8.8
  server_image: ubuntu-mesos

And then create the stack, referencing that environment file:

heat stack-create -f mesoscluster.yaml -e local.yaml my-mesos-cluster

You must provide value for:

• ssh_key_name

You can optionally provide values for:

• server_image (ubuntu-mesos if not provided)
• external_network (public if not provided)
• dns_nameserver (8.8.8.8 if not provided)

Interacting with Mesos

You can get the ip address of the Mesos master using the heat output-show command:

$ heat output-show my-mesos-cluster mesos_master
"192.168.200.86"

You can ssh into that server as the ubuntu user:

$ ssh ubuntu@192.168.200.86

You can log into your slaves using the ubuntu user as well. You can get a list of slaves addresses by running:

$ heat output-show my-mesos-cluster mesos_slaves
[
  "192.168.200.182"
]

Testing

Docker containers can be deployed via Marathon's REST API. Marathon is a mesos framework for long running applications.

We can 'post' a JSON app description to http://:8080/apps to deploy a Docker container.

$ cat > app.json << END
{
  "container": {
    "type": "DOCKER",
    "docker": {
      "image": "libmesos/ubuntu"
    }
  },
  "id": "ubuntu",
  "instances": 1,
  "cpus": 0.5,
  "mem": 512,
  "uris": [],
  "cmd": "while sleep 10; do date -u +%T; done"
}
END
$ MASTER_IP=$(heat output-show my-mesos-cluster mesos_master | tr -d '"')
$ curl -X POST -H "Content-Type: application/json" \
    http://${MASTER_IP}:8080/v2/apps -d@app.json

Using the Marathon web console (at http://:8080/), you will see the application you created.

License

Copyright 2015 Huawei Technologies Co.,LTD.

Licensed under the Apache License, Version 2.0 (the "License"); you may not use these files except in compliance with the License. You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.