Image “Fast Ethernet PCI Network Interface Card SN5100TX.jpg” by Jana.Wiki is licensed under CC BY-SA 3.0 If you’ve ever booted a Red Hat-based system and have no network connectivity, you’ll appreciate this quick fix. Read the full article on redhat.com It might surprise you to know that if you forget to flip the network […]

I did the following presentation “Devops with Kubernetes” in Kubernetes Sri Lanka inaugural meetup earlier this week. Kubernetes is one of the most popular open source projects in the IT industry currently. Kubernetes abstractions, design patterns, integrations and extensions make it very elegant for Devops. The slides delve little deep […]

I did the following presentation “Devops with Kubernetes” in Kubernetes Sri Lanka inaugural meetup earlier this week. Kubernetes is one of the most popular open source projects in the IT industry currently. Kubernetes abstractions, design patterns, integrations and extensions make it very elegant for Devops. The slides delve little deep […]

This week, I did a presentation in Container Conference, Bangalore. The conference was well conducted and it was attended by 400+ quality attendees. I enjoyed some of the sessions and also had fun talking to attendees. The topic I presented was “Deep dive into Kubernetes Networking”. Other than covering Kubernetes […]

This week, I did a presentation in Container Conference, Bangalore. The conference was well conducted and it was attended by 400+ quality attendees. I enjoyed some of the sessions and also had fun talking to attendees. The topic I presented was “Deep dive into Kubernetes Networking”. Other than covering Kubernetes […]

Debugging Container and Docker Networking issues can be daunting at first considering that containers do not contain any debug tools inside the container. I normally see a lot of questions around Docker networking issues in Docker and stackoverflow forum. All the usual networking tools can be used to debug Docker […]

Debugging Container and Docker Networking issues can be daunting at first considering that containers do not contain any debug tools inside the container. I normally see a lot of questions around Docker networking issues in Docker and stackoverflow forum. All the usual networking tools can be used to debug Docker […]

Last few months, I have been looking at Docker forums(https://forums.docker.com/, https://stackoverflow.com/questions/tagged/docker) and trying to understand some of the common questions/issues faced in the Docker Networking area. This prompted me to do 2 presentations: Docker Networking overview Docker Networking – Common issues and troubleshooting techniques I received positive feedback to these 2 […]

Last few months, I have been looking at Docker forums(https://forums.docker.com/, https://stackoverflow.com/questions/tagged/docker) and trying to understand some of the common questions/issues faced in the Docker Networking area. This prompted me to do 2 presentations: Docker Networking overview Docker Networking – Common issues and troubleshooting techniques I received positive feedback to these 2 […]

Starting with Docker 17.03, Docker introduced Community edition(CE) and Enterprise edition(CE) version of their Docker software. The release numbering also changed. From Docker 1.13.1, we jump to 17.03 version. Docker CE is the free version while Docker EE is the commercially supported enterprise version. Docker enterprise edition comes in different […]

As part of Dockercon 2017, there was an announcement that Linux containers can run as hyperv container in Windows server. This announcement made me to take a deeper look  into Windows containers. I have worked mostly with Linux containers till now. In Windows, I have mostly used Docker machine or Toolbox […]

Two months ago we (Xpirit) published a new edition of our Xpirit Magazine. In this magazine I wrote an article on how Docker will change Microsoft Development. In this blog post you will find the introduction. If you want to read the whole article, you can download the PDF of […]

Two months ago we (Xpirit) published a new edition of our Xpirit Magazine. In this magazine I wrote an article on how Docker will change Microsoft Development. In this blog post you will find the introduction. If you want to read the whole article, you can download the PDF of […]

Last Friday I did a talk on Dutch Docker Day. Together with my colleague Alex Thissen We talked about “Dockerizing your ASP.NET Application on Windows and Linux”. We showed how you can use ASP.NET 5 to run cross platform in a Linux Docker Container, on a Mac and in an […]

Have you ever wondered what would you do if your machine crashes and you don’t have access to your NextCloudPi data (and yes, you always forget to create a backup)? Or maybe if there is a way to connect your NCP with someone else’s on the same LAN and share […]

Have you ever wondered what would you do if your machine crashes and you don’t have access to your NextCloudPi data (and yes, you always forget to create a backup)? Or maybe if there is a way to connect your NCP with someone else’s on the same LAN and share […]

It has been a few years now from the container explosion and the ecosystem is starting to settle down. After all the big names in industry jumped in the containerization wagon, very often proposing their own solution, it seems like Docker based platforms are finally here to stay.After Docker became […]

It has been a few years now from the container explosion and the ecosystem is starting to settle down. After all the big names in industry jumped in the containerization wagon, very often proposing their own solution, it seems like Docker based platforms are finally here to stay.After Docker became […]

We already covered how Linux executes files and how to run ARM binaries “natively” in Linux in the last two posts. We ended up running a whole ARM root filesystem transparently in a chroot jail using QEMU user mode and binfmt_misc support. Now that we have that covered, nothing prevents […]

The people at the Armbian team have been doing an impressive work at optimizing and generating Debian images for many ARM boards. While they have documentation on the build process, it focuses mostly on setting up a build environment on VirtualBox with Vagrant. They do support building in a Docker […]

We already covered how Linux executes files and how to run ARM binaries “natively” in Linux in the last two posts. We ended up running a whole ARM root filesystem transparently in a chroot jail using QEMU user mode and binfmt_misc support. Now that we have that covered, nothing prevents […]

The people at the Armbian team have been doing an impressive work at optimizing and generating Debian images for many ARM boards. While they have documentation on the build process, it focuses mostly on setting up a build environment on VirtualBox with Vagrant. They do support building in a Docker […]

Last post, I shared a docker container for compilation in C with ccache and colorgcc included. This time, we will extend that base container for development and packaging of Debian packages. Not only it is handy to have the environment configured and packaged, but also opens some oportunities for optimization […]

This container is my base build environment for compiling C programs. It produces colored output and it caches compilation artifacts so that subsequent re-compilations are greately accelerated. It is layered on top of my minidebian container, and I usually expand it further depending on the project. See this example. Features […]

Last post, I shared a docker container for compilation in C with ccache and colorgcc included. This time, we will extend that base container for development and packaging of Debian packages. Not only it is handy to have the environment configured and packaged, but also opens some oportunities for optimization […]

Note: some of this information is outdated, check a newer release here I would like to introduce my NextCloud ARM container for the Raspberry Pi. It only weights 475 MB, and it is shares codebase with NextCloudPi, so it has the same features: Raspbian 9 Jessie Nextcloud 13.0.1 Apache 2.4.25, […]

In the last post, we introduced some basic techniques to free up unused space on a Debian system. Following those steps, I created a Debian 8 Docker image that takes only 56.7 MB! Usage You can get it typing the following, but you really don’t need to because docker run  […]

This container is my base build environment for compiling C programs. It produces colored output and it caches compilation artifacts so that subsequent re-compilations are greately accelerated. It is layered on top of my minidebian container, and I usually expand it further depending on the project. See this example. Features […]

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