UrbanCode Deploy with Patterns 126.96.36.199 is out. A whole lot of fixes and some new stuff. Take a look at
A recent post from Doug Davis “Docker: Managing the excitement” has some nice insights on Docker as a “relatively new” technology. Among the other Docker niceties that Doug points out, one that resonated with me is, and I quote “it takes seconds (if not less than a second, after the first time since things are cached) for it to complete”. Reading between the lines in some of my other posts, I’ve often battled the dark forces of virtual machine world, usually trying to squeeze every bit of extra juice out of my poor laptop. Then I tried Docker and well, suffice to say I need fewer coffee breaks.
My long-time colleague and friend Takehiko Amano has a post on “Immutable Infrastructure” where he talks about Docker in the context of OpenStack and with a bunch of my earlier posts focused on OpenStack, I decided to figure out how the three – OpenStack, Docker, and UCD+P might work together.
In the concluding paragraphs of my last post, UrbanCode Deploy with Patterns: Hello World ,I briefly compared the UrbanCode Deploy with Patterns (UCD+P) use of OpenStack HEAT Templates (HOT) for blueprints with my own simple XML blueprint for vSphere compute resources. In the past week a Fix Pack was released for UCD+P which adds initial support for provisioning to VMware vSphere infrastructure. So in this post I’ll do a “Hello World” -style example of connecting UCD+P to a vCenter 5.5 server, provisioning a VM on it and deploying multiple UrbanCode Deploy (UCD) components to the VM.
Having hooked up UrbanCode Deploy with Patterns (UCDP) to OpenStack and UrbanCode Deploy (UCD), it’s time to take a look at a “HelloWorld”-style example. I’ll work through a single-server UCDP blueprint, deploying a single UCD component to it.
UrbanCode Deploy with Patterns (UCDP): a mouthful right? A pretty neat and powerful mouthful though. Consider theses two posts: Cooking up deployments on stacked clouds and UrbanCode Deploy with vSphere and Chef. UCDP makes it simpler and easier to carry out a bunch of steps detailed in those posts. Before I get into the details, let me first quickly go through how to install UCDP and connect it to an OpenStack setup.
In a previous post (Cooking up deployments on stacked clouds) I looked at using UrbanCode Deploy with OpenStack and Chef. I showed one way of creating a stack from a Heat template, injecting the UCD agent and Chef into one of the newly provisioned servers, cooking a Chef recipe and deploying an application on it. This time round I look at how to do almost the same thing with VMware vSphere.
Managing database schema changes can be a non-trivial task. Very often the danger associated with potential bad changes being deployed makes DBAs very protective of their territories and resistant to changing tried and true methods.
However, the push towards more Agile development methods, adoption of DevOps practices and Continuous Delivery capabilities is including database development in its embrace; the last 10 years or so has seen a lot of work towards aligning database development with application development best practices. That said, there are probably quite a few organisations out there where the normal practice for deploying database changes is to use some sort of “list of instructions” and various GUI DB tools with maybe some scripts thrown in. Even adopting practices such as SCM and CI can appear daunting.