Add blog about k8s

Dockerfile

@@ -1,6 +1,6 @@
 FROM alpine:3.20
 
-RUN apk add --no-cache ikiwiki
+RUN apk add --no-cache ikiwiki git
 COPY . /build
 WORKDIR /build
 RUN ikiwiki --rebuild --setup ikiwiki.setup

Makefile

@@ -5,15 +5,22 @@ BROWSER=conkeror
 IKIWIKI=ikiwiki
 
 VERSION=$(shell git describe --always)
+ARGOCD_HOME=$HOME/vcs/k8s-config/cluster/p10/apps/templates/
+ARGOCD_YAML=nicoweb.yaml
+ARGOCD_APP=$ARGOCD_HOME/$ARGOCD_YAML
+
+all: container
 
 pub:
 	git push --mirror
-all:
+setup:
 	$(IKIWIKI) --refresh --setup ikiwiki.setup
 
 container:
 	docker build -t harbor.k8s.ungleich.ch/nico/www.nico.schottelius.org:$(VERSION) .
 	docker push harbor.k8s.ungleich.ch/nico/www.nico.schottelius.org:$(VERSION)
+	sed -i "s,harbor.k8s.ungleich.ch/nico/www.nico.schottelius.org:.*,harbor.k8s.ungleich.ch/nico/www.nico.schottelius.org:$(VERSION)" $(ARGOCD_APP)
+	cd $(ARGOCD_HOME) && git add $(ARGOCD_YAML) && git commit -m "Update www.nico.schottelius.org to $(VERSION)" && git push
 
 lall:
 	$(IKIWIKI) --refresh --setup ikiwiki.setup --set destdir=../dst --set srcdir=. --set git_wrapper= --set git_wrappermode= --set gitorigin_branch= --set gitmaster_branch=

blog/2024-10-11-moving-into-k8s.mdwn

@@ -0,0 +1,84 @@
+[[!meta title="www.nico.schottelius.org now hosted in kubernetes"]]
+
+## History
+
+I started this website in 2008, according to the
+[git log on the
+2008-10-30](https://code.ungleich.ch/nico/www.nico.schottelius.org). Since
+then it has been based on [ikiwiki](https://ikiwiki.info), a sample
+word processor.
+
+This website has been hosted on many different physical and virtual
+servers since then. And now...
+
+## Moving into kubernetes
+
+It is time for its next step. When you are reading this, the website
+is likely already being served by a tiny container in a larger
+kubernetes cluster.
+
+But why moving it in the first place? Isn't a static webserver running
+nginx good enough?
+
+## The ungleich infrastructure
+
+The one or other of you knows that I work for
+[ungleich](https://ungleich.ch), a Swiss Open Source company with the
+focus on sustainability. The infrastructure at ungleich has been
+always evolving and one of the earliest credos was to run anything
+that is potentially being offered as a product ourselves. Thus any
+service you can get from ungleich, is also being run internally -
+anything from Matrix to Nextcloud to Mattermost to Netbox, you name
+it.
+
+## VM workloads are getting old
+
+While there is still a significant amount of virtual machines running
+at ungleich, internally most (more than 80%) of the workload has been
+migrated to kubernetes a long time ago. The main advantage of
+kubernetes for ungleich is to be able to run many similar services
+(again such as matrix) and deploy them using
+[argocd](https://argo-cd.readthedocs.io/).
+
+While we are still using [cdist](http://cdi.st/) for configuration
+management and for configuring servers (both bare metal as well as
+VMs), deploying applications via kubernetes is now a well known
+pattern and effectively reduces the effort.
+
+This particular website is running on a virtual machine we internally
+call "staticweb", as it only hosts statically generated websites, no
+dynamic content at all.
+
+And it has been on our "to migrate" list for about 1.5 years. So it's
+time to move on...
+
+## How to run a website in kubernetes
+
+There are so many different ways to run applications in kubernetes,
+today I want to show you a rather simple one. As I mentioned, this
+website is built using ikiwiki and backed by git. It actually uses a
+[Makefile](/Makefile) for a long time and since today also a
+[Dockerfile](/Dockerfile) to generate its own container.
+
+Makefiles are not always nice, but they have one very nice way of
+working: if one command fails, the makefile aborts. So we can use it
+essentially to:
+
+* build the container
+* upload the container
+* update the argocd manifest to refer to the latest container
+
+And each step is only executed if the previous one was successful.
+
+Instead of using a too fancy build pipeline that runs async in some
+amazing build cluster I am just executing
+
+    make
+
+On my notebook and everything else is built & triggered and
+uploaded.
+
+If you can read this, my build was successful.
+
+
+[[!tag ikiwiki kubernetes]]