Merge pull request 'scale-to-one-node' (#269) from scale-to-one-node into main

Reviewed-on: jahanson/homelab#269

Taskfile.yaml

@@ -87,7 +87,7 @@ tasks:
             "containers": [
               {
                 "name": "debug",
-                "image": "ghcr.io/onedr0p/alpine:rolling",
+                "image": "docker.io/library/alpine:3.19.1",
                 "command": ["/bin/bash"],
                 "stdin": true,
                 "stdinOnce": true,

kubernetes/apps/database/crunchy-postgres-operator/cluster/postgrescluster.yaml

@@ -39,7 +39,7 @@ spec:
       metadata:
         labels:
           app.kubernetes.io/name: crunchy-postgres
-      replicas: &replica 3
+      replicas: &replica 1
       dataVolumeClaimSpec:
         storageClassName: openebs-hostpath
         accessModes:

kubernetes/apps/database/dragonfly/app/dragonfly.yaml

@@ -7,7 +7,7 @@ metadata:
     app.kubernetes.io/name: dragonfly
   name: dragonfly
 spec:
-  replicas: 2
+  replicas: 1
   resources:
     requests:
       cpu: 500m

kubernetes/apps/kube-system/cilium/app/resources/values.yml

@@ -23,7 +23,7 @@ containerRuntime:
 
 localRedirectPolicy: true
 operator:
-  rollOutPods: true
+  replicas: 1
 ipam:
   mode: kubernetes
 kubeProxyReplacement: true

kubernetes/apps/kube-system/descheduler/app/helmrelease.yaml

@@ -24,7 +24,7 @@ spec:
   uninstall:
     keepHistory: false
   values:
-    replicas: 2
+    replicas: 1
     kind: Deployment
     deschedulerPolicyAPIVersion: descheduler/v1alpha2
     deschedulerPolicy:

kubernetes/apps/kube-system/kubelet-csr-approver/app/helm-values.yaml

@@ -0,0 +1,3 @@
+---
+providerRegex: ^shadowfax$
+bypassDnsResolution: true

kubernetes/apps/kube-system/kubelet-csr-approver/app/helmrelease.yaml

@@ -0,0 +1,32 @@
+---
+# yaml-language-server: $schema=https://ks.hsn.dev/helm.toolkit.fluxcd.io/helmrelease_v2beta2.json
+apiVersion: helm.toolkit.fluxcd.io/v2beta2
+kind: HelmRelease
+metadata:
+  name: kubelet-csr-approver
+spec:
+  interval: 30m
+  chart:
+    spec:
+      chart: kubelet-csr-approver
+      version: 1.1.0
+      sourceRef:
+        kind: HelmRepository
+        name: postfinance
+        namespace: flux-system
+  install:
+    remediation:
+      retries: 3
+  upgrade:
+    cleanupOnFail: true
+    remediation:
+      strategy: rollback
+      retries: 3
+  valuesFrom:
+    - kind: ConfigMap
+      name: kubelet-csr-approver-helm-values
+  values:
+    metrics:
+      enable: true
+      serviceMonitor:
+        enabled: true

kubernetes/apps/kube-system/kubelet-csr-approver/app/kustomization.yaml

@@ -0,0 +1,12 @@
+---
+# yaml-language-server: $schema=https://json.schemastore.org/kustomization.json
+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+resources:
+  - ./helmrelease.yaml
+configMapGenerator:
+  - name: kubelet-csr-approver-helm-values
+    files:
+      - values.yaml=./helm-values.yaml
+configurations:
+  - kustomizeconfig.yaml

kubernetes/apps/kube-system/kubelet-csr-approver/app/kustomizeconfig.yaml

@@ -0,0 +1,7 @@
+---
+nameReference:
+  - kind: ConfigMap
+    version: v1
+    fieldSpecs:
+      - path: spec/valuesFrom/name
+        kind: HelmRelease

kubernetes/apps/kube-system/kubelet-csr-approver/ks.yaml

@@ -0,0 +1,21 @@
+---
+# yaml-language-server: $schema=https://raw.githubusercontent.com/fluxcd-community/flux2-schemas/main/kustomization-kustomize-v1.json
+apiVersion: kustomize.toolkit.fluxcd.io/v1
+kind: Kustomization
+metadata:
+  name: &app kubelet-csr-approver
+  namespace: flux-system
+spec:
+  targetNamespace: kube-system
+  commonMetadata:
+    labels:
+      app.kubernetes.io/name: *app
+  path: ./kubernetes/apps/kube-system/kubelet-csr-approver/app
+  prune: false # never should be deleted
+  sourceRef:
+    kind: GitRepository
+    name: homelab
+  wait: false
+  interval: 30m
+  retryInterval: 1m
+  timeout: 5m

kubernetes/apps/kube-system/kustomization.yaml

@@ -10,6 +10,7 @@ resources:
   - ./descheduler/ks.yaml
   - ./dnsimple-webhook-rbac.yaml
   - ./fstrim/ks.yaml
+  - ./kubelet-csr-approver/ks.yaml
   - ./metrics-server/ks.yaml
   - ./multus/ks.yaml
   - ./intel-device-plugin/ks.yaml

kubernetes/apps/kyverno/kyverno/app/helmrelease.yaml

@@ -56,7 +56,7 @@ spec:
       serviceMonitor:
         enabled: true
     admissionController:
-      replicas: 3
+      replicas: 1
       serviceMonitor:
         enabled: true
       rbac:

kubernetes/apps/media/immich/app/postgresCluster.yaml

@@ -42,7 +42,7 @@ spec:
       metadata:
         labels:
           app.kubernetes.io/name: pgo-${APP}
-      replicas: 2
+      replicas: 1
       dataVolumeClaimSpec:
         storageClassName: openebs-hostpath
         accessModes:

kubernetes/apps/network/cloudflared/app/helmrelease.yaml

@@ -28,7 +28,7 @@ spec:
   values:
     controllers:
       cloudflared:
-        replicas: 2
+        replicas: 1
         strategy: RollingUpdate
         annotations:
           reloader.stakater.com/auto: "true"

kubernetes/apps/network/ingress-nginx/external/helmrelease.yaml

@@ -22,7 +22,7 @@ spec:
       valuesKey: MAXMIND_LICENSE_KEY
   values:
     controller:
-      replicaCount: 2
+      replicaCount: 1
       updateStrategy:
         type: RollingUpdate
       allowSnippetAnnotations: true

kubernetes/apps/network/ingress-nginx/internal/helmrelease.yaml

@@ -20,7 +20,7 @@ spec:
     fullnameOverride: nginx-internal
 
     controller:
-      replicaCount: 3
+      replicaCount: 1
 
       updateStrategy:
         type: RollingUpdate

kubernetes/apps/observability/grafana/app/helmrelease.yaml

@@ -29,7 +29,7 @@ spec:
     - name: loki
       namespace: observability
   values:
-    replicas: 2
+    replicas: 1
     envFromSecret: grafana-secret
     dashboardProviders:
       dashboardproviders.yaml:

kubernetes/apps/observability/kube-prometheus-stack/app/helmrelease.yaml

@@ -45,7 +45,7 @@ spec:
           - hosts:
               - *host
       alertmanagerSpec:
-        replicas: 2
+        replicas: 1
         useExistingSecret: true
         configSecret: alertmanager-secret
         storage:
@@ -117,7 +117,7 @@ spec:
         podMetadata:
           annotations:
             secret.reloader.stakater.com/reload: &secret thanos-objstore-config
-        replicas: 2
+        replicas: 1
         replicaExternalLabelName: __replica__
         scrapeInterval: 1m # Must match interval in Grafana Helm chart
         ruleSelectorNilUsesHelmValues: false

kubernetes/apps/observability/loki/app/helmrelease.yaml

@@ -111,12 +111,12 @@ spec:
         analytics:
           reporting_enabled: false
     backend:
-      replicas: 2
+      replicas: 1
       persistence:
         size: 20Gi
         storageClass: openebs-hostpath
     gateway:
-      replicas: 2
+      replicas: 1
       image:
         registry: ghcr.io
       ingress:
@@ -130,9 +130,9 @@ spec:
         tls:
           - hosts: [*host]
     read:
-      replicas: 2
+      replicas: 1
     write:
-      replicas: 2
+      replicas: 1
       persistence:
         size: 20Gi
         storageClass: openebs-hostpath

kubernetes/apps/observability/thanos/app/helmrelease.yaml

@@ -75,11 +75,11 @@ spec:
         storageClass: openebs-hostpath
         size: 10Gi
     query:
-      replicas: 2
+      replicas: 1
       extraArgs: ["--alert.query-url=https://thanos.jahanson.tech"]
     queryFrontend:
       enabled: true
-      replicas: 2
+      replicas: 1
       extraEnv: &extraEnv
         - name: THANOS_CACHE_CONFIG
           valueFrom:
@@ -98,7 +98,7 @@ spec:
         configmap.reloader.stakater.com/reload: *configMap
     rule:
       enabled: true
-      replicas: 2
+      replicas: 1
       extraArgs: ["--web.prefix-header=X-Forwarded-Prefix"]
       alertmanagersConfig:
         value: |-
@@ -120,7 +120,7 @@ spec:
                     severity: critical
       persistence: *persistence
     storeGateway:
-      replicas: 2
+      replicas: 1
       extraEnv: *extraEnv
       extraArgs: ["--index-cache.config=$(THANOS_CACHE_CONFIG)"]
       persistence: *persistence

kubernetes/apps/observability/vector/app/aggregator/helmrelease.yaml

@@ -26,7 +26,7 @@ spec:
   values:
     controllers:
       vector-aggregator:
-        replicas: 2
+        replicas: 1
         strategy: RollingUpdate
         annotations:
           reloader.stakater.com/auto: "true"

kubernetes/apps/rook-ceph/rook-ceph/cluster/helmrelease.yaml

@@ -49,6 +49,7 @@ spec:
       bdev_enable_discard = true
       bdev_async_discard = true
       osd_class_update_on_start = false
+      osd_pool_default_size = 1
     cephClusterSpec:
       network:
         provider: host
@@ -63,20 +64,7 @@ spec:
       storage:
         useAllNodes: true
         useAllDevices: false
-        deviceFilter: "xvdb|nvme1n1|nvme0n1"
-      placement:
-        mgr: &placement
-          nodeAffinity:
-            requiredDuringSchedulingIgnoredDuringExecution:
-              nodeSelectorTerms:
-                - matchExpressions:
-                    - key: node-role.kubernetes.io/control-plane
-                      operator: Exists
-          tolerations: # allow mgr to run on control plane nodes
-            - key: node-role.kubernetes.io/control-plane
-              operator: Exists
-              effect: NoSchedule
-        mon: *placement
+        deviceFilter: "nvme2n1"
       resources:
         mgr:
           requests:
@@ -103,8 +91,6 @@ spec:
       - name: ceph-blockpool
         spec:
           failureDomain: host
-          replicated:
-            size: 3
         storageClass:
           enabled: true
           name: ceph-block
@@ -130,12 +116,8 @@ spec:
       - name: ceph-filesystem
         spec:
           metadataPool:
-            replicated:
-              size: 3
           dataPools:
             - failureDomain: host
-              replicated:
-                size: 3
               name: data0
           metadataServer:
             activeCount: 1
@@ -171,13 +153,8 @@ spec:
         spec:
           metadataPool:
             failureDomain: host
-            replicated:
-              size: 3
           dataPool:
             failureDomain: host
-            erasureCoded:
-              dataChunks: 2
-              codingChunks: 1
           preservePoolsOnDelete: true
           gateway:
             port: 80

kubernetes/apps/security/external-secrets/app/helmrelease.yaml

@@ -18,7 +18,7 @@ spec:
         namespace: flux-system
   values:
     installCRDs: true
-    replicaCount: 3
+    replicaCount: 1
     leaderElect: true
     serviceMonitor:
       enabled: true

kubernetes/bootstrap/talos/apps/helmfile.yaml

@@ -10,8 +10,8 @@ helmDefaults:
 repositories:
   - name: cilium
     url: https://helm.cilium.io
-  - name: nvdp
-    url: https://nvidia.github.io/k8s-device-plugin
+  - name: postfinance
+    url: https://postfinance.github.io/kubelet-csr-approver
 
 releases:
   - name: cilium
@@ -20,12 +20,12 @@ releases:
     version: 1.15.4
     values: ["../../../apps/kube-system/cilium/app/resources/values.yml"]
     wait: true
-  - name: nvidia-device-plugin
+  - name: kubelet-csr-approver
     namespace: kube-system
-    chart: nvdp/nvidia-device-plugin
-    version: 0.14.5
-    values: ["../../../apps/kube-system/nvidia-device-plugin/app/resources/values.yml"]
-    wait: true
+    chart: postfinance/kubelet-csr-approver
+    version: 1.1.0
+    values: ["../../../apps/kube-system/kubelet-csr-approver/app/helm-values.yaml"]
+    needs: ["cilium"]
   - name: spegel
     namespace: kube-system
     chart: oci://ghcr.io/spegel-org/helm-charts/spegel

kubernetes/bootstrap/talos/talconfig.yaml

@@ -6,9 +6,6 @@ talosVersion: v1.7.1
 kubernetesVersion: 1.28.4
 endpoint: "https://10.1.1.57:6443"
 
-cniConfig:
-  name: none
-
 additionalApiServerCertSans:
   - 10.1.1.57
 
@@ -21,10 +18,12 @@ nodes:
     ipAddress: 10.1.1.61
     controlPlane: true
     installDiskSelector:
-      busPath: /dev/nvme0n1
+      busPath: /pci0000:20/0000:20:01.2/0000:2d:00.0/nvme/nvme1/nvme1n1
     networkInterfaces:
-      - interface: eth0
+      - interface: enp37s0f1
         dhcp: true
+      - interface: enp37s0f0
+        dhcp: false
     kernelModules:
       - name: nvidia
       - name: nvidia_uvm
@@ -55,7 +54,7 @@ controlPlane:
       machine:
         network:
           nameservers:
-            - 10.1.1.11
+            - 10.1.1.1
 
     # Configure NTP
     - |-
@@ -79,6 +78,9 @@ controlPlane:
         allowSchedulingOnMasters: true
         proxy:
           disabled: true
+        network:
+          cni:
+            name: none
 
     # ETCD configuration
     - |-

kubernetes/templates/postgres-database/postgresCluster.yaml

@@ -34,7 +34,7 @@ spec:
       metadata:
         labels:
           app.kubernetes.io/name: pgo-${APP}
-      replicas: 2
+      replicas: 1
       dataVolumeClaimSpec:
         storageClassName: openebs-hostpath
         accessModes:

kubernetes/tools/wipeone.yaml

@@ -3,19 +3,19 @@ apiVersion: v1
 kind: Pod
 metadata:
   name: disk-wipe-one
-  namespace: rook-ceph
+  namespace: kube-system
 spec:
   restartPolicy: Never
-  nodeName: talos-ltk-p4a
+  nodeName: shadowfax
   containers:
     - name: disk-wipe
-      image: ghcr.io/onedr0p/alpine:3.19.1@sha256:3fbc581cb0fe29830376161ae026e2a765dcc11e1747477fe9ebf155720b8638
+      image: docker.io/library/alpine:3.19.1
       securityContext:
         privileged: true
       resources: {}
       env:
         - name: CEPH_DISK
-          value: "/dev/xvdb"
+          value: "/dev/nvme2n1"
       command:
         [
           "/bin/sh",
@@ -34,4 +34,3 @@ spec:
     - name: host-var
       hostPath:
         path: /var
-

kubernetes/tools/wiperook.yaml

@@ -9,7 +9,7 @@ spec:
   nodeName: talos-fki-fmf
   containers:
     - name: disk-wipe
-      image: ghcr.io/onedr0p/alpine:3.19.1@sha256:3fbc581cb0fe29830376161ae026e2a765dcc11e1747477fe9ebf155720b8638
+      image: docker.io/library/alpine:3.19.1
       securityContext:
         privileged: true
       resources: {}
@@ -46,7 +46,7 @@ spec:
   nodeName: talos-xuc-f2e
   containers:
     - name: disk-wipe
-      image: ghcr.io/onedr0p/alpine:3.19.1@sha256:3fbc581cb0fe29830376161ae026e2a765dcc11e1747477fe9ebf155720b8638
+      image: docker.io/library/alpine:3.19.1
       securityContext:
         privileged: true
       resources: {}
@@ -83,7 +83,7 @@ spec:
   nodeName: talos-opy-6ij
   containers:
     - name: disk-wipe
-      image: ghcr.io/onedr0p/alpine:3.19.1@sha256:3fbc581cb0fe29830376161ae026e2a765dcc11e1747477fe9ebf155720b8638
+      image: docker.io/library/alpine:3.19.1
       securityContext:
         privileged: true
       resources: {}