DC/OS ships with a comprehensive metrics service, providing metrics from DC/OS cluster hosts and from containers running on those hosts. These metrics are then made available via the DC/OS metrics API, allowing for easy integration with a wide range of monitoring solutions. It’s also possible to add your own custom metrics from your applications to the metrics service, and in this blog I’ll show you how to do exactly that from a Python application.

Kubernetes handles East-West connectivity for services internally within our Kubernetes cluster, by assigning an cluster-internal IP which can be reached by all services within the cluster. When it comes to external, or North-South, connectivity, there are a number of different methods we can use to achieve this. Firstly, we can define a NodePort Service type. This exposes the service on a static port at each node’s IP. Any traffic sent to that port on a node is forwarded to the relevant service.

Earlier this month I attended the Open Source Data Center conference at the Mercure MOA in Berlin. OSDC is an annual event, organised by Netways, a German IT services company and long term supporters of open source software. Netways is also a Mesos and Marathon user, having built an application delivery platform for their customers, which we’ll hopefully be covering in a future blog post. The theme of the conference is simplifying IT infrastructures with open source, and the aim is to present innovative strategies, forward looking developments, and new perspectives in dealing with large data centers.