Docker health checks
Somehow I missed the news that starting from version 1.12 Docker containers support health checks. Such checks don’t just test if container itself is running, but …
Category: Development
docker-compose for Swarm: docker stack
Imagine you configured your new shiny Docker cluster and now ready to fill it with dockerized applications. How exactly are you going to do that? Not …
Quick intro to Docker Swarm mode
Docker is cool. It is a great tool to pack your application into set of containers, throw them into the host and they’ll just work. However, …
Building VM image with Packer
Quite often building a VM from scratch is not very wise. Unless server configuration is trivial, its provisioning might take significant amount of time. For example, creating an instance …
Using Vagrant for Windows VMs provisioning
Using Vagrant for creating Consul cluster on Linux probably was fun. But what about Windows hosts? Believe it or not, but more than half of developers are …
How to use Vagrant to create Consul cluster
Last two articles about Consul service discovery involved one simple but extremely boring manual task: creating and configuring a cluster. In fact, I had to …
Checking service health status with Consul
In previous post we created a small Consul cluster which kept track of 4 services in it: two web services and two db‘s. However, we didn’t …
Using Consul for Service Discovery
Imagine your distributed app has two kinds of services: web and db. Both of them are replicated for higher availability, live on different hosts, go …
Using Consul Key-Value Store for Service Configuration
How do you usually configure an app? Over the decades our industry came up with multiple approaches, like providing command line arguments, various config files, registry settings …
Persistent data in Docker volumes
As Docker containers supposed to be small, single process and easy replaceable instances, it’s not particularly clear how persistent data fits into that picture. Imagine you have …