feat: add cert-manager

2021-04-14 12:34:44 -04:00
1 parent 7a770b9ab4
commit f49c4d89b4
@@ -1,13 +1,15 @@
 # cluster-k3s

-Template for creating a k3s cluster with [k3sup](https://github.com/alexellis/k3sup), [Flux](https://toolkit.fluxcd.io/) and [SOPS](https://github.com/mozilla/sops)
+Template for creating a [k3s](https://k3s.io/) cluster with [k3sup](https://github.com/alexellis/k3sup), [Flux](https://toolkit.fluxcd.io/) and [SOPS](https://github.com/mozilla/sops)

-This template will bootstrap the nodes you want with the following components
+This template will bootstrap the nodes you want with the following components:

- k3s
- flux
- metallb
- flannel
+- [k3s](https://k3s.io/)
+- [flannel](https://github.com/flannel-io/flannel)
+- [local-path-provisioner](https://github.com/rancher/local-path-provisioner)
+- [flux](https://toolkit.fluxcd.io/)
+- [metallb](https://metallb.universe.tf/)
+- [cert-manager](https://cert-manager.io/) with Cloudflare DNS challenge

 ## :memo:&nbsp; Prerequisites

@@ -112,8 +114,8 @@ k3sup join \
 ```sh
 kubectl --kubeconfig=./kubeconfig get nodes
 # NAME           STATUS   ROLES                       AGE     VERSION
-# k8s-master-a   Ready    control-plane,master      4d14h   v1.20.5+k3s1
-# k8s-worker-a   Ready    worker                    4d14h   v1.20.5+k3s1
+# k8s-master-a   Ready    control-plane,master      4d20h   v1.20.5+k3s1
+# k8s-worker-a   Ready    worker                    4d20h   v1.20.5+k3s1
 ```

 ### GitOps with Flux
@@ -137,21 +139,25 @@ kubectl --kubeconfig=./kubeconfig create secret generic sops-gpg \

 ```sh
 export BOOTSTRAP_GITHUB_REPOSITORY="k8s-at-home/home-cluster"
-export BOOTSTRAP_DOMAIN="k8s-at-home.com"
 export BOOTSTRAP_METALLB_LB_RANGE="169.254.1.10-169.254.1.20"
+export BOOTSTRAP_DOMAIN="k8s-at-home.com"
+export BOOTSTRAP_CLOUDFLARE_TOKEN="dsKq41iLAbXE37GV"

 envsubst < ./.sops.yaml
 envsubst < ./cluster/cluster-secrets.yaml
 envsubst < ./cluster/cluster-settings.yaml
 envsubst < ./cluster/base/flux-system/gotk-sync.yaml
+envsubst < ./cluster/core/infrastructure/cert-manager/secret.enc.yaml
 ```

 4. **Verify** all the above files have the correct information present

-5. Encrypt `cluster-settings.yaml` with SOPS
+5. Encrypt `cluster-settings.yaml` and `secret.enc.yaml` with SOPS

 ```sh
+export GPG_TTY=$(tty)
 sops --encrypt --in-place ./cluster/base/cluster-secrets.yaml
+sops --encrypt --in-place ./cluster/core/infrastructure/cert-manager/secret.enc.yaml
 ```

 6. **Verify** this file **is encrypted** with SOPS
@@ -180,4 +186,4 @@ pre-commit install-hooks

 ## :handshake:&nbsp; Thanks

-A lot of inspiration for my cluster came from the people that have shared their clusters over at [awesome-home-kubernetes](https://github.com/k8s-at-home/awesome-home-kubernetes)
+Big shout out to all the authors and contributors to the projects that we are using in this repository.
@@ -6,3 +6,4 @@ metadata:
    namespace: flux-system
 stringData:
    SECRET_DOMAIN: $BOOTSTRAP_DOMAIN
+    SECRET_CLOUDFLARE_EMAIL: $BOOTSTRAP_CLOUDFLARE_EMAIL
@@ -0,0 +1,5 @@
+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+resources:
+# renovate: registryUrl=https://charts.jetstack.io chart=cert-manager
+- https://github.com/jetstack/cert-manager/releases/download/v1.3.0/cert-manager.crds.yaml
@@ -0,0 +1,4 @@
+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+resources:
+- cert-manager
@@ -0,0 +1,6 @@
+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+resources:
+- letsencrypt-production.yaml
+- letsencrypt-staging.yaml
+- secret.enc.yaml
@@ -0,0 +1,18 @@
+---
+apiVersion: cert-manager.io/v1
+kind: ClusterIssuer
+metadata:
+  name: letsencrypt-production
+spec:
+  acme:
+    server: https://acme-v02.api.letsencrypt.org/directory
+    email: "${SECRET_CLOUDFLARE_EMAIL}"
+    privateKeySecretRef:
+      name: letsencrypt-production
+    solvers:
+    - dns01:
+        cloudflare:
+          email: "${SECRET_CLOUDFLARE_EMAIL}"
+          apiKeySecretRef:
+            name: cloudflare-token-secret
+            key: cloudflare-token
@@ -0,0 +1,18 @@
+---
+apiVersion: cert-manager.io/v1
+kind: ClusterIssuer
+metadata:
+  name: letsencrypt-staging
+spec:
+  acme:
+    server: https://acme-staging-v02.api.letsencrypt.org/directory
+    email: "${SECRET_CLOUDFLARE_EMAIL}"
+    privateKeySecretRef:
+      name: letsencrypt-staging
+    solvers:
+    - dns01:
+        cloudflare:
+          email: "${SECRET_CLOUDFLARE_EMAIL}"
+          apiKeySecretRef:
+            name: cloudflare-token-secret
+            key: cloudflare-token
@@ -0,0 +1,8 @@
+# yamllint disable
+apiVersion: v1
+kind: Secret
+metadata:
+    name: cloudflare-token-secret
+    namespace: cert-manager
+stringData:
+    cloudflare-token: ${BOOTSTRAP_CLOUDFLARE_TOKEN}
@@ -0,0 +1,5 @@
+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+resources:
+- cert-manager
+- metallb
@@ -0,0 +1,37 @@
+---
+apiVersion: helm.toolkit.fluxcd.io/v2beta1
+kind: HelmRelease
+metadata:
+  name: metallb
+  namespace: networking
+spec:
+  interval: 5m
+  chart:
+    spec:
+      chart: metallb
+      version: 2.3.5
+      sourceRef:
+        kind: HelmRepository
+        name: bitnami-charts
+        namespace: flux-system
+      interval: 10m
+  values:
+    controller:
+      image:
+        repository: metallb/controller
+        tag: v0.9.6
+    speaker:
+      image:
+        repository: metallb/speaker
+        tag: v0.9.6
+    prometheus:
+      serviceMonitor:
+        enabled: false
+      prometheusRule:
+        enabled: false
+    configInline:
+      address-pools:
+      - name: default
+        protocol: layer2
+        addresses:
+        - "${METALLB_LB_RANGE}"
@@ -0,0 +1,4 @@
+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+resources:
+- helm-release.yaml
@@ -0,0 +1,6 @@
+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+resources:
+- crds
+- infrastructure
+- namespaces
@@ -0,0 +1,5 @@
+---
+apiVersion: v1
+kind: Namespace
+metadata:
+  name: cert-manager
@@ -0,0 +1,5 @@
+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+resources:
+- cert-manager.yaml
+- networking.yaml
@@ -0,0 +1,5 @@
+---
+apiVersion: v1
+kind: Namespace
+metadata:
+  name: networking
@@ -0,0 +1,37 @@
+---
+apiVersion: helm.toolkit.fluxcd.io/v2beta1
+kind: HelmRelease
+metadata:
+  name: cert-manager
+  namespace: cert-manager
+spec:
+  interval: 5m
+  chart:
+    spec:
+      # renovate: registryUrl=https://charts.jetstack.io/
+      chart: cert-manager
+      version: v1.3.0
+      sourceRef:
+        kind: HelmRepository
+        name: jetstack-charts
+        namespace: flux-system
+      interval: 5m
+  values:
+    installCRDs: false
+    webhook:
+      enabled: true
+    extraArgs:
+    - --dns01-recursive-nameservers=1.1.1.1:53
+    - --dns01-recursive-nameservers-only
+    cainjector:
+      replicaCount: 1
+    podDnsPolicy: "None"
+    podDnsConfig:
+      nameservers:
+      - "1.1.1.1"
+      - "8.8.8.8"
+    prometheus:
+      enabled: false
+      servicemonitor:
+        enabled: false
+        prometheusInstance: monitoring
@@ -0,0 +1,4 @@
+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+resources:
+- helm-release.yaml
@@ -0,0 +1,4 @@
+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+resources:
+- cert-manager