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Running 1,000 Containers in Docker Swarm

Docker has been touted as the holy grail of on-premises software container solutions. Docker Swarm is the orchestration upgrade that allows you to scale your containers from a single host to many hosts, and from tens of containers into thousands of them. But does it deliver on that promise? Let’s run 1,000 containers to find out. Prepare the Network I’m ...

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Deploying at Scale: Chef, Puppet, Ansible, Fabric and SaltStack

Get visibility into your infrastructure’s impact on app performance with AppDynamics – Monitor and optimize your customers’ journeys as they move through your applications’ infrastructure. Start a FREE Trial! The manageability, reliability and powerful technology of remote servers — cloud computing — allows IT managers to deploy hundreds, even thousands of machines. At the same time, the cloud creates a ...

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Docker Ansible Example

When one uses Docker for a while, after the excitement of how amazing is Docker is gone, he starts realizing that building and pulling images, and creating containers by hand, may not be the best way for managing Docker applications and services. Luckily, Ansible, one of the most powerful IT Automation tool, comes to the rescue here. Ansible offers modules for ...

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Docker Secrets Management

I’m sure we’ve all been there. That moment when you realize that important and sensitive access details have leaked online into a public space and potentially rendered your services to unrequited access. With the ever-growing amount of services we depend on for our development stack, the number of sensitive details to remember and track has also increased. To cope with ...

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Docker Zeppelin Tutorial

Big Data is one of the most trending topics in the last times. One of the existing tools for this task is Zeppelin, a Java application developed by Apache, which is an implementation of the concept known as “web notebook”, focused on the interactive data analytics with languages and technologies like Spark, R, etc. In this tutorial we will see ...

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Docker ZoneMinder Tutorial

ZoneMinder is a set of application and tools, free and open source, that offers a complete solution for video-surveillance, allowing IP or CCTV cameras, among others. In this tutorial we will see how to set up a Docker container running it. For this tutorial, Linux Mint 18 and Docker version 1.12.3 have been used.             ...

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Docker Challenges and Misconceptions

Previously, we discussed the main reasons why Docker can be useful to the enterprise. So why aren’t all large companies using Docker already? A large part of the reason are the misconceptions surrounding Docker. We’ll touch on four of them in this post before we wrap up with some suggestions about how to move forward with Docker at the enterprise ...

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Docker Volumes Example

Each Docker container stores the data its processes need in that container. Unless we make the container store the data outside the container, which is extremely useful for when we don’t want to have the data layer we work with tied to the running container. That’s what we are going to see in this example, using Docker volumes. For this ...

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Debug PHP in Docker with PhpStorm and Xdebug

Xdebug is one of the most known PHP extensions, a very complete and powerful debugger. This tutorial will show you how to use it in combination with PhpStorm, probably the most used PHP IDE; and Docker, the archi-known contanerization software.   This would allow us to simply write a Dockerfile with all the Xdebug configuration, and being able to easily ...

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