add k0s support (#1123)

* ignore idea

* Initial work on support for k0s

* *  Changed config param to bootstrap_distribution
*  Replaced democratic-csi with openebs
*  Added notes about system-upgrade-controller being ignored with k0s
*  Removed password for nodes

* *  Switched to single storage path for openebs
*  Removed democratic-csi helm repo
*  Added missing openebs helm repo
*  Fixed template formatting
*  Made bootstrap_private_github_repo hidden/undocumented
*  Updated flux cluster config to accommodate bootstrap_private_github_repo

* *  added the storageclass name to be declarative

* *  added newline
*  set chart wait false

* *  fixed spacing in K0sTasks
*  fixed openebs path
*  properly added openebs helm repo

* *  updated configure task to use venv
*  renamed bootstrap_kube_vip_addr to bootstrap_kubeapi_addr
*  renamed bootstrap_kube_vip_addr derived variables accordingly

* *  tweaked configure task cmd
*  started work on k0s-config.yaml template

* *  tweaked k0s task cmd
*  moved coredns under addons rather than optional
*  fixed typo in coredns task
*  normalized formatting in k0s-config
*  disabled telemetry in k0s-config
*  added renovate to k0s-config
*  removed tunnel and added routing mode in k0s-config cilium chart values
*  updated docs in config example
*  fixed issue with k0s-config controller role so it didn't default to worker+controller if more than one master

* *  fixed whitespace

* add k0sctl to brew tasks

* Update bootstrap/vars/config.sample.yaml

* Update bootstrap/vars/config.sample.yaml

* Update k0s-config.yaml.j2

* Update config.sample.yaml

* controllerManager and scheduler bind to `0.0.0.0` for metrics

* Update custom-cilium-helmchart.yaml.j2.j2

* Update helmvalues.yaml.j2

* Update bootstrap/tasks/addons/main.yaml

* first pass at readme updates

* update placement of k0sconfig options

* disable telemetry on k0sctl too

* disable k0s telemetry in env too

* update: jinja spacing in k0sconfig

Signed-off-by: Devin Buhl <devin@buhl.casa>

* fix: ensure bootstrap_local_storage_path is delete on nuke

Signed-off-by: Devin Buhl <devin@buhl.casa>

* fix: update renovate regex for k3s/k0s

Signed-off-by: Devin Buhl <devin@buhl.casa>

* fix: update nuke playbook and only include k3s task when k3s

Signed-off-by: Devin Buhl <devin@buhl.casa>

* fix: update nuke playbook and only include k3s task when k3s and include jinja comments

Signed-off-by: Devin Buhl <devin@buhl.casa>

---------

Signed-off-by: Devin Buhl <devin@buhl.casa>
Co-authored-by: Devin Buhl <onedr0p@users.noreply.github.com>
Co-authored-by: Devin Buhl <devin@buhl.casa>

.taskfiles/BrewTasks.yaml

@@ -20,6 +20,7 @@ tasks:
         fluxcd/tap/flux
         helm
         jq
+        k0sproject/tap/k0sctl
         k9s
         kubernetes-cli
         kustomize

.taskfiles/FluxTasks.yaml

@@ -26,9 +26,15 @@ tasks:
       - kubectl apply --server-side --filename {{.KUBERNETES_DIR}}/flux/vars/cluster-settings-user.yaml
       - kubectl apply --server-side --kustomize {{.KUBERNETES_DIR}}/flux/config
     preconditions:
-      - { msg: "Flux already appears installed", sh: "exit $(( ! $(kubectl get namespace flux-system) ))" }
+      - { msg: "Flux already appears installed", sh: "kubectl get namespace flux-system &>/dev/null && exit 1 || exit 0" }
       - { msg: "Age private key not found",      sh: "test -f {{.ROOT_DIR}}/age.key" }
 
+  github-deploy-key:
+    cmds:
+      - sops --decrypt {{.KUBERNETES_DIR}}/bootstrap/github-deploy-key.sops.yaml | kubectl apply -f -
+    preconditions:
+      - { msg: "Flux is not installed", sh: "kubectl get namespace flux-system &>/dev/null && exit 0 || exit 1" }
+
   apply:
     desc: Apply a Flux Kustomization resource for a cluster
     summary: |

.taskfiles/K0sTasks.yaml

@@ -0,0 +1,28 @@
+---
+version: "3"
+
+env:
+  DISABLE_TELEMETRY: "true"
+
+tasks:
+
+  kubeconfig:
+    desc: Gets k0s cluster kubeconfig
+    cmds:
+      - k0sctl kubeconfig --config k0s-config.yaml > kubeconfig
+    preconditions:
+      - { msg: "k0s-config.yaml not found", sh: "test -f {{.ROOT_DIR}}/k0s-config.yaml" }
+
+  apply:
+    desc: Apply k0s cluster k0s-config.yaml
+    cmds:
+      - k0sctl apply --config k0s-config.yaml
+      - task: kubeconfig
+    preconditions:
+      - { msg: "k0s-config.yaml not found", sh: "test -f {{.ROOT_DIR}}/k0s-config.yaml" }
+
+  reset:
+    desc: Resets the k0s cluster
+    cmd: k0sctl reset --config k0s-config.yaml
+    preconditions:
+      - { msg: "k0s-config.yaml not found", sh: "test -f {{.ROOT_DIR}}/k0s-config.yaml" }