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Tag Archives: Docker

Docker for Windows, Linux, and Mac

Released earlier in 2017, Docker’s new native applications for Windows and Mac replaced the older methods for running Docker on Windows and Mac and created a better experience for developers using those platforms. The previous solution, Docker Toolbox, depended on VirtualBox to create a small Linux virtual machine that hosted your images and containers. It worked well but could be ...

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Using Docker Behind a Proxy

In today’s article, I am going to explore a common pain point for anyone running Docker in a large corporate environment. Today I’ll show how to use Docker without direct internet access. By default, Docker assumes that the system running Docker and executing Docker commands has general access to the internet. Often in large corporate networks this is simply not ...

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Docker Node.js Example

Despite the controversy and different opinions that Node.js generates among web developers, after all, it’s a technology that it’s widely used, so, sooner or later, a web developer (and sysadmin) will have to face it, meaning this that everyone should have, at least, a basic knowledge about it. This example will show how to easily set up a Node environment, within ...

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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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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. Tip You may skip Docker installation ...

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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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