MongoDB replica set on swarm mode

In this article we will see how we can deploy a 3 nodes MongoDB replica set (1 primary and 2 secondaries) in a Docker swarm cluster created with swarm mode.

Swarm mode: quick introduction

Swarm mode on CoreOS

When setting up a swarm cluster, by default I use Ubuntu machines (16.04 TLS). As we hear a lot about CoreOS, I wondered how a swarm can be deployed on a cluster of CoreOS hosts. Is there any reason to go CoreOS instead of Ubuntu (or other Linux distros) for “standard load” web applications ?

Setup GitLab using AWS services

In a previous article, I quickly described the base of a CICD pipeline we deployed at TRAXxs (GitHub, CircleCI, Docker Hub, Docker Cloud, DigitalOcean were part of the technological stack used).

Docker & AppArmor: 30.000 foot view

When it comes to the sensitive topic of container security, several options are considered. Among them: kernel capabilities, SELinux, AppArmor, seccomp.

In this short article I’ll explain at a very high level what AppArmor is and how it is…

Discovering Docker Datacenter

One thing really great about being a member of the Docker Captain program is that you are involved in private beta and can play with products very early before they go GA. It’s been quite some time I wanted to have a closer look into Docker Datacenter and the new release to…

Using Chimp to test a Docker Compose application

In a previous article we saw an example of a simple CI/CD stack that we are using at TRAXxs.