oinker

Oinker on Marathon on DC/OS

This example runs Oinker-Go on Marathon on DC/OS Vagrant with Cassandra-Mesos and Marathon-LB.

Install DC/OS

1. Follow the dcos-vagrant setup steps to configure your installation.

2. Use vagrant to deploy a cluster with 1 (large) private agent node and 1 (small) public agent node (requires 8.5 GB free memory):

   vagrant up m1 a1 p1 boot
   

3. Log into the DC/OS UI with a browser: http://m1.dcos/.

4. Install and configure the DC/OS CLI by following the instructions in the DC/OS UI.

5. Log into DC/OS with the DC/OS CLI:

   dcos auth login
   

   Follow the printed instructions to authenticate.

   If you were previously logged into a different cluster, you may have to logout first.

Install Cassandra

1. Configure Cassandra with lower resource usage than default:

   cat >/tmp/cassandra.json <<EOF
   {
       "service": {
           "cpus": 0.1,
           "mem": 512,
           "heap": 256
       },
       "executor": {
           "cpus": 0.1,
           "mem": 512,
           "heap": 256
       },
       "nodes": {
           "cpus": 0.5,
           "mem": 2048,
           "disk": 4096,
           "heap": {
               "size": 1024,
               "new": 100
           },
           "count": 1,
           "seeds": 1
       },
       "task": {
           "cpus": 0.1,
           "mem": 128
       }
   }
   EOF
   

2. Install the cassandra package:

   dcos package install --options=/tmp/cassandra.json cassandra --yes
   

3. Wait for the Cassandra service to be running and healthy. Check the DC/OS Services UI: http://m1.dcos/#/services/.

   The Cassandra service should deploy 1 scheduler task and 1 cassandra node task on private DC/OS nodes. These can be seen on the service detail page. The service won't be marked as healthy or done deploying until both tasks are running and healthy.

Install Marathon-LB

For Mesosphere Enterprise DC/OS, follow the instructions to Install Marathon-LB on Mesosphere Enterprise DC/OS.

For open DC/OS, use the following steps to configure and install Marathon-LB:

1. Configure marathon-lb with lower memory usage than default:

   cat >/tmp/marathon-lb.json <<EOF
   {
       "marathon-lb": {
           "mem": 256
       }
   }
   EOF
   

2. Install the marathon-lb package:

   dcos package install --options=/tmp/marathon-lb.json marathon-lb --yes
   

3. Wait for the Marathon-LB service to be running and healthy. Check the DC/OS Services UI: http://m1.dcos/#/services/.

   The Marathon-LB service should deploy 1 task on the public DC/OS node. This can be seen on the service detail page.

Install Oinker

1. Create the Oinker app:

   dcos marathon app add examples/oinker/oinker.json
   

2. Wait for Marathon to deploy 3 app instances.

   dcos marathon app show oinker | jq -r '"\(.tasksHealthy)/\(.tasksRunning)/\(.instances)"'
   

3. Visit the load-balanced endpoint in a browser: http://oinker.acme.org/