Tag: docker (page 2 of 2)

Our past recent events – Docker & Cloud Foundry meetups

I’m happy to say that this year has started with a lot of energy in terms of tech events in Switzerland. January was a little quiet, with people slowly recovering from the Christmas and New Years festivities. But come February, Zurich was a very busy location with several meetups happening every week.

We also took this opportunity to get back into organising our meetups. Last week, on 17th of February we organised the 6th Docker Switzerland User Group’s meetup. The meetup was held in the premises of DeinDeal, a Swiss online shopping platform and coupons offering company, in Zurich. The meetup turned out to be quite good. More than 70 people turned up at DeinDeal’s office. There were 3 talks in total held and all of them delighted the participants with a demo about their coolness in using Docker.  Continue reading

Putting your OpenStack Horizon dashboard into a Docker Container

In one of our projects, GEYSER, we were looking into a way of packaging customized code for a pilot test. Generally, we developed µservices which communicate with key Openstack components and we have specifically modified Openstack Horizon code by adding a new dashboard. These µservices as well as Openstack Horizon are quite decoupled from the core Openstack system meaning that communication is done mostly through external API calls rather than a message bus. A number of packaging options were considered: basic packaging python code is relatively straightforward but does not offer the flexibility we require, specifically around rollback. Other solutions include virtual environments or virtual machines, but ultimately, we decided to use Docker containers they are all the rage these days. This blog post describes step-by-step how to containerize Horizon in docker, noting any particular issues we observed in the process. Continue reading

5th Docker & 7th CloudFoundry usergroups meetup

IMG_1225Last night we organised the 5th Docker Switzerland user group meetup in Zürich. The event was co-located with the 7th CloudFoundry DACH user group meetup as well. We were overwhelmed to see the participation, the meetup page showed about a 100 people registered for the event, but about 75 showed up. Still it was a packed room at the ZHAW Lagerstrasse building in Zürich.  Continue reading

Process Management in Docker Containers

In the context of the Cloud Native Applications (CNA) Seed Project we are working on migrating an open source CRM application into to the cloud. After enabling horizontal scalabilty of the original application and moving it onto our OpenStack cloud with the help of CoreOS (etcd, fleet) and docker we’ve now just finished adding the monitoring / logging / log-collection functionality – a blog post describing this process in its detail will follow – which is needed for the next part of the project: enabling automatic scaling. As part of this process we’ve learnt some lessons concerning the process management in docker containers which we’d like to share in this post.

Continue reading

OpenStack Summit – Deep Dive into Day 2

CERN Openstack (super) User Story
CERN is looking for answers to the fundamental questions concerning creation of the Universe and true to its nature, its a a big data challenge. With the historical run of LHC in 2013, their archive now contains ~100PB (with additional 27PB/year) at ~11 000 servers with ~75000 disk drives and ~45 000 tapes and with the reopening of the LHC, they expect a significant increase of data in 2015. CERN recently opened up a new data center in Budapest connected to Geneve’s headquarters by T-Systems 100GbE line. 
CERN currently runs  four Openstack Icehouse clouds and expects these to run 150 000 cores by Q1 2015 in total. All the CERN‘s non-specific code is upstream and are available for anyone who would like to build at the top of it in the future.
CERN put great emphasis on collaboration. Openlab project is public-private partnership between CERN and major ICT companies (e.g. Rackspace) and its goal is to accelerate the development of cutting-edge cloud solutions.
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OpenShift on OpenStack
RedHat and Cisco gave a demo on deploying OpenShift on OpenStack using Heat, Docker & Kubernetes. OpenShift is a PaaS offering from RedHat with both the enterprise and open source versions. The thought process of deploying OpenShift on OpenStack is to maintain a high degree of flexibility and enable a faster deployment of applications. In the demo, Heat was made use of for orchestration. Docker’s pull and push methodology is used for getting a new Image or saving a modified version which could be pulled later on. Along with tagging of the images, diff operation can also be done. Docker containers are also used as daemons. However Docker cannot see beyond a single host and doesn’t have the capacity to manage mass configuration and deployment. That’s where the Kubernetes comes into picture. Here Pod resemble the Docker’s containers and the etc functionality is used to configure the master which would pass it along to the slaves and there by mass configuration is achieved.The link to the presentation can be found here.
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Setup a Kubernetes Cluster on OpenStack with Heat

In this post we take a look at Kubernetes and help you setup a Kubernetes Cluster on your existing OpenStack Cloud using its Orchestration Service Heat. This Kubernetes Cluster should only be used as a Proof of Concept.

Technology involved:
Kubernetes: https://github.com/GoogleCloudPlatform/kubernetes
CoreOS: https://coreos.com/
etcd: https://github.com/coreos/etcd
fleet: https://github.com/coreos/fleet
flannel: https://github.com/coreos/flannel
kube-register: https://github.com/kelseyhightower/kube-register

The Heat Template used in this Post is available on Github.

What is Kubernetes?

Kubernetes allows the management of docker containers at scale. Its core concepts are covered in this presentation, held at the recent OpenStack&Docker Usergroup meetups.

A complete overview of Kubernetes is found on the Kubernetes Repo.


The provisioned Cluster consists of 5 VMs. The first one, discovery, is a dedicated etcd host. This allows easy etcd discovery thanks to a static IP-Address.

A Kubernetes Master host is setup with the Kubernetes components apiserver, scheduler, kube-register, controller-manager as well as proxy. This machine also gets a floating IP assined and acts as a access point to your Kubernetes cluster.

Three Kubernetes Minion hosts are setup with the Kubernetes components kubelet and proxy.


Follow the instructions on the Github repo to get your Kubernetes cluster up and running:



Two examples are provided in the repo:

8th Swiss Openstack meetup

docker-logo-loggedout         chosug  icclab-logo

Last week, 16 Oct 2014, great participation to OpenStack User Group – Meeting @ICCLab Winterthur. We have co-located it with docker CH meetupAround 60 participants from both the user groups.

For this event, we have organised the agenda trying to have a good mix of big players and developers presentations. Goals : Analysis of OpenStack and Docker Solutions, deployments and containers orchestration.

Final Agenda  start: 18.00

Snacks and Drinks were kindly offered by ZHAWMirantis

We had some interesting technical discussions and Q&A with some speakers during the evening apero, as usual.


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