March 2, 2017

Keeping Docker Containers Safe

Docker containers introduce serious security problems, but you can employ a number of methods to deploy them securely.

Few debate that the destiny of a hosting infrastructure is running applications across multiple containers. Containers are a genuinely fantastic, highly performant technology ideal for deploying software updates to applications. Whether you're working in an enterprise with a number of critical microservices, tightly coupled with a pipeline that continuously deploys your latest software, or you're running a single LEMP (Linux, Nginx, MySQL, PHP) website that sometimes needs to scale up for busy periods, containers can provide with relative ease the software dependencies you need across all stages of your development life cycle.

Containers are far from being a new addition to server hosting. I was using Linux containers (OpenVZ) in production in 2009 and automatically backing up container images of around 250MB to Amazon's S3 storage very effectively. A number of successful container technologies have been used extensively in the past, including LXC, Solaris Zones, and FreeBSD jails, to name but a few.

Suffice to say, however, that the brand currently synonymous with container technology is the venerable Docker. 

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