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I'd really like to hear about Docker specifically, but most of the answers so far seem to relate to containers in general, rather than Docker specifically. What are the business cases for using Docker over some other container-based solution?
For my website I have it set up with continuous integration to run my tests when I merge into master and build a docker image which it then pushes to the docker registry. I then have it ssh into my host server, pull that image, then run the new container and remove the old one.
Boom, i've just deployed my website by simply merging a PR into my master! This is just a simple use case, and I probably wouldn't suggest deploying a production ready site like this, but it's really cool!
We have had a mostly positive experience with it. This is especially useful if your company encourages developers to work across teams - Ops can build around infrastructure around this and be sure that every team builds and runs code in the same way - If your application is complex, using docker-compose, its extremely simple to setup your dev environment - The community is moving towards docker, and it doesnt hurt your resume if you have production docker experience Minuses: When you rappad write a resume on and off a vpn for example, boot2docker has constantly messed things up.
If you can get your dev setup right, docker works well.
If not, it can be a pain sometimes on OSX - Although its easy to build docker images for most of the open source software out there if docker images dont already existit can be a pain to do that for enterprise software. Try using docker with oracle db. You might get it to work. You wont have fun with it!!
Without docker you are slowed down by 2x or more. Without docker, either you set up a lot of staging environments, which is not great and costly.
Or you use one single testing environment and let each of you tech person wait for hours, wasting time, while QA tries to test one branch and you have another idiot deploying another brand on staging.
Once you check in your code, docker repository hooked to bitbucket will build the docker image and then you can start deployment from Tutum with one click. Using Docker allows all the software to have the same interface which makes it easier to compare like-for-like.
Here's the site - http: The ability to waste less of your EC2 resources is a very clear business win. Everything else is still nice, but it's basically "dev environments suck less". You have two choices: Upgrade to CentOS 7. There's one of your business cases right there.
Cloud 66 uses Docker technology and integrates 11 open sources tools to cover end to end stack deployment on any cloud provider or on your own server, within one click. You can compare different Docker solutions http: On the CI server side of things Our CI server a. Additionally there is a lot of other peripheral software that we did not want to install on our host machine but it was critical for our unit tests to run.
This is where docker is valuable to us from a build perspective. It allows us to isolate the application for unit testing and not get caught up with the possibility of other running software on the same machine affecting the builds, therefore freeing us up from debugging, and therefore saving the company money because developers are not wasting time debugging CI server issues.
It's easy to isolate CI server related issues from the docker container running the unit tests because a developer can just run the same tests using the container on their local machine, so it creates a consistent environment.
On the infrastructure deployment side of things Previous to our "dockerized" infrastructure we were managing about 7 different AMI's for all our servers and it was becoming a pain in the butt to manage the installation of new software if our application called for it, create a new AMI, then re-deploy said AMI.
If you have experience with AWS and you have done this enough times, I'm sure you have faced at one point or another long wait times for your AMI to be created before you can re-deploy with that newly created AMI. This is time wasted on the application deployment side of things, but also on the personnel side of things while you wait for that damn thing to be created so you can re-deploy.
Time is money and money waiting for resources to be available or for AMI's to be created is money taken away from the business. Additionally though in its infancy stage, we are using docker-compose https: Have you ever used that in conjunction with Vagrant in order to test out your provisioning and software deployment locally?
Docker replaces or can replace all of that.Rappad joins a trustworthy essay and expert assistance.
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