Apr 30, 2018

Autoscaling Reporter

I frequently get asked about utilizing AWS CloudWatch metrics collecting abilities to autoscale DC/OS EE clusters. Usually people figure out quickly how to use the AWS built in metrics (for example CPU utilization) but are not completely sure how they can start emitting their own, custom ones and use those instead.

In this article, I will help you set up a simple Marathon app that will do just that for us: forward some DC/OS built-in metrics and even create and push a custom one.

Tags:  dcos ,  service-account ,  AWS ,  CloudWatch

Apr 29, 2018

DC/OS Service Accounts in Restricted Environments

We are so used to having handy little pieces of software that help us do our jobs better. If you too work in the DevOps world and write automation for infrastructure or software (or pretty much anything else) you know what I mean. Take jq for an example: can you imagine writing any sort of shell script that interacts with any JSON producing API and NOT using good ole trustworthy jq?

Tags:  dcos ,  service-account ,  restricted-environment ,  JWT ,  openssl

Jan 28, 2018

Run Adhoc Tasks on DC/OS

DC/OS can run Marathon or Kubernetes for orchestrating long running tasks and Metronome / Chronos for scheduled ones. That leaves space for a mechanism to run ad-hoc tasks that do not need to be treated as long running nor scheduled ones.

Tags:  dcos ,  eremetic ,  ad-hoc

Jan 27, 2018

Secure Kafka Install on DC/OS

Apache Kafka is a distributed high-throughput publish-subscribe messaging system with strong ordering guarantees. Kafka clusters are highly available, fault tolerant, and very durable. DC/OS offers a single click install of Kafka as a framework which is great for trying out. When it comes to actually using it in a Dev/Test/Production environment, you should definitely consider securing your Kafka installation. You will be required to do so if you are running your DC/OS EE cluster in strict mode.

Tags:  dcos ,  kafka ,  security ,  service-account

Jan 25, 2018

Create VPN Tunnel to your DC/OS Cluster

A frequently asked question is how one can connect their client machine to a DC/OS cluster in such a way that the internal cluster network is locally addressable.

Tags:  dcos ,  openvpn ,  vpn

Oct 28, 2017

Install Kubernetes on DC/OS (beta)

My employer recently announced first class support for running Kubernetes on top of DC/OS version 1.10. In this post we will examine how to get started with using Kubernetes on DC/OS.

Tags:  dcos ,  kubernetes ,  installation

Oct 28, 2017

DC/OS on KVM CoreOS VMs

In this article we will automate the DC/OS installation procedure specifically for CoreOS VMs running on KVM (libvirt).

Tags:  dcos ,  coreos ,  kvm ,  libvirt ,  qemu ,  scripting ,  parallel

Jul 28, 2017

Getting Started with Apache Cassandra On DC/OS

Apache Cassandra is a distributed, structured storage system. Cassandra clusters are highly available, scalable, performant, and fault tolerant. DC/OS allows you to quickly configure, install, and manage Apache Cassandra clusters, so you can offer Cassandra as a managed service to your organization.

Tags:  dcos ,  cassandra ,  data-services ,  stateful

Jul 18, 2017

IP per Container with Calico CNI on DC/OS

Project Calico is a Layer 3 software defined network that runs well on DC/OS and Mesos. In this blog post we will walk through installing and configuring it on DC/OS 1.9. That will allow us to attach containers to Calico and receive unique IPs for them. We will also examine the security implications and policies that can be applied.

Tags:  dcos ,  sdn ,  ucr ,  cni

May 27, 2017

Compiling Local DC/OS Universe

DC/OS offers its users the ability to install various frameworks with a single click from a central publicly hosted package repository called Universe.

Many Mesosphere clients run their DC/OS clusters in air-gapped environments with no access to the internet, thus not allowing for said one click installation of framework packages.

You can easily solve this problem if your DC/OS cluster is running in such a restricted environment.

Tags:  dcos ,  universe ,  local ,  air-gapped ,  dialog ,  tui