The following three concept pictures are from Will Gorman's great mesoscon presentation. They introduce the key concepts that we will use in the following.
A Spinnaker application contains (0-n) clusters.
A Spinnaker cluster contains (1-n) server groups, and each server groups contains (0-n) service instances. Each server group representing a new version of the cluster.
A Spinnaker server group maps (1-1) to a DC/OS service (aka marathon app).
On the Spinnaker home page select the Applications tab. There you select the Create Application action.
In the New Application dialog type myapp for the name and [email protected] for the owner email.
The new myapp shows up in the applications list. Select myapp to open the app and get ready for the next steps.
In the myapp Clusters view select Create Server Group.
As we learned in the concepts section a server group is a DC/OS service (or marathon app), so most of the things you have to fill in the following are the things you familiar with from creating marathon json defitions.
First selecte the dcos Account and dcos Region you want to create the server group in. Next select the name of the Stack. The Spinnaker application name plus stack name make the cluster name, in our case myapp-prod
In Container Settings selecte nginx:1.11 for the image to use.
In Network selecte Bridge for Network Type and port 80 for Container Port. Also set web for service endpoint Name.
In Health Checks define a simple health check specifying / for Path and 0 for Port Index. After that hit Create to create the server group.
In the myapp Clusters view you will see the new cluster with one server group containing one instance, i.e. one nginx server running in our sample.
In this section we go through Create Server Group a second time. Choose same dcos Account, same dcos Region, and same name for Stack as before.
In Container Settings select nginx:1.12 for the image. For the other sections do the same settings we used the 1st time arround, and hit Create to create a new version of the server group.
The myapp Clusters view now shows that our cluster runs two server group versions V000 and V001. Later we show how you can leverage this capability in blue green deployments.
The following shows how our two server group versions look on the DC/OS side. They are DC/OS services with the name made up from cluster name and version number, in this sample myapp-prod-V000 and myapp-prod-v001.
