Sync Kubernetes volume with S3 bucket

In the Cloud era topics like backup became kind of less important. One of the reasons is probably possibility to take automated snapshots of your volumes, another maybe that you can use some kind of redundancy. However, there are still use cases where you need more traditional ways to backup your data. In this article we will discuss about syncing files from your Kubernetes volume to S3 compatible storage. If you know the concept of Persistent Volumes in Kubernetes, then you also know three of the supported access modes: ReadWriteOnce, ReadOnlyMany or ReadWriteMany....

2020-10-06 · 3 min · Boban Acimovic

Develop Kubernetes native applications in Golang with auto-recompile and auto-restart

Do you develop or plan to develop a Kubernetes native application in Golang, controller or operator? Such application strongly depends on being inside Kubernetes and development outside of Kubernetes may be a real hassle. Usually you have to build an image over and over again and restart the pod (with imagePullPolicy set to Always). This is very boring and time consuming procedure. Two years ago I developed an image to auto-recompile and auto-restart Go application, named go-reflex , but it was intented to be used by docker-compose....

2020-08-28 · 2 min · Boban Acimovic

Traefik 2.2 can again fully utilize Kubernetes Ingress resources

Learn how to setup Traefik 2.2 on Kubernetes and how to automatically get TLS wildcard certificates. Traefik is a modern Web server made in the cloud era so it’s authors define it as a Cloud Native edge router. It is written in Go and it’s maybe not as fast as nginx or HAProxy, but it is fast enough and in the same time it has great features not present in traditional Web servers....

2020-07-31 · 3 min · Boban Acimovic

Using Traefik 2.2 middlewares with Kubernetes Ingress resources

Since Traefik 2.0, this feature was possible just with custom IngressRoute resources, but it is now possible with normal Kubernetes Ingress as well. So, what is the Traefik middleware, anyways? It is a piece of code which is triggered just before the Ingress itself. Here you can find the full list of available directives that you can use to create your middleware. In this article we are going to define two middlewares, one to redirect www....

2020-07-31 · 2 min · Boban Acimovic

Install cert-manager using helmfile

You may wonder what the heck is helmfile ? Well, I would say what is docker-compose to Docker, this is helmfile to Helm . Basically, it allows us to install the whole stack of applications to our Kubernetes cluster in a declarative way. And you may also wonder why is cert-manager so special? I would say cert-manager itself is not that special Helm chart, but it contains CRD ’s which may be installed either by using value installCRDs=true or by installing them using kubectl apply before you install the chart....

2020-07-28 · 2 min · Boban Acimovic