Lisa McNicol

Docker Online Meetup recap: Introducing Docker 1.13

Last week, we released Docker 1.13 to introduce several new enhancements in addition to building on and improving Docker swarm mode introduced in Docker 1.12. Docker 1.13 has many new features and fixes that we are excited about, so we asked core team member and release captain, Victor Vieux to introduce Docker 1.13 in an online meetup. The meetup took place on Wednesday, Jan 25 and over 1000 people RSVPed to hear Victor’s presentation live. Victor gave an overview and demo of many of the new features: Restructuration of CLI commands Experimental build CLI backward compatibility Swarm default encryption at rest Compose to Swarm Data management commands Brand new “init system” Various orchestration enhancements In case you missed it, you can watch the recording and access Victor’s slides below.   Below is a short list of the questions asked to Victor at Continue reading…

Michael Crosby

CPU Management in Docker 1.13

Resource management for containers is a huge requirement for production users. Being able to run multiple containers on a single host and ensure that one container does not starve the others in terms of cpu, memory, io, or networking in an efficient way is why I like working with containers. However, cpu management for containers is still not as straightforward as what I would like. There are many different options when it comes to dealing with restricting the cpu usage for a container. With things like memory, its is very easy for people to think that , –memory 512m gives the container up to 512mb. With CPU, it’s hard for people to understand a container’s limit with the current options. In Docker 1.13 we added a –cpus flag, which is the best tech for limiting cpu usage of a container with a Continue reading…

Docker Core Engineering

Introducing Docker 1.13

Today we’re releasing Docker 1.13 with lots of new features, improvements and fixes to help Docker users with New Year’s resolutions to build more and better container apps. Docker 1.13 builds on and improves Docker swarm mode introduced in Docker 1.12 and has lots of other fixes. Read on for Docker 1.13 highlights. Use compose-files to deploy swarm mode services Docker 1.13 adds Compose-file support to the `docker stack deploy` command so that services can be deployed using a `docker-compose.yml` file directly. Powering this is a major effort to extend the swarm service API to make it more flexible and useful. Benefits include: Specifying the number of desired instances for each service Rolling update policies Service constraints Deploying a multi-host, multi-service stack is now as simple as: docker stack deploy –compose-file=docker-compose.yml my_stack Improved CLI backwards compatibility Ever been bitten by the dreaded Error Continue reading…