Bump pdbmux image to v0.5.0

artifactapi pulls its own images from itself, so a cold boot with every api pod down cannot pull them. Kubelet GC never removes images referenced by pods on the node, so a pod on every node holding the pinned tags keeps them local.

- add image-keeper DaemonSet referencing the api and ui images as no-op init containers
- run a static busybox as `true` inside the distroless api image
- tolerate all taints, run at low priority with tiny non-root resources

Reviewed-on: #535
Co-authored-by: unkin-agent <unkin-agent@unkin.net>
Co-committed-by: unkin-agent <unkin-agent@unkin.net>

apps/base/artifactapi/api-deployment.yaml

@@ -36,7 +36,7 @@ spec:
               mountPath: /combined-certs
       containers:
         - name: api
-          image: git.unkin.net/unkin/artifactapi:v3.12.0
+          image: artifactapi.k8s.syd1.au.unkin.net/docker-internal/artifactapi:v3.13.1
           imagePullPolicy: IfNotPresent
           ports:
             - containerPort: 8000

apps/base/artifactapi/image-keeper.yaml

@@ -0,0 +1,105 @@
+---
+apiVersion: apps/v1
+kind: DaemonSet
+metadata:
+  name: image-keeper
+  namespace: artifactapi
+spec:
+  selector:
+    matchLabels:
+      app: image-keeper
+  updateStrategy:
+    rollingUpdate:
+      maxUnavailable: 25%
+    type: RollingUpdate
+  template:
+    metadata:
+      labels:
+        app: image-keeper
+    spec:
+      automountServiceAccountToken: false
+      priorityClassName: low
+      tolerations:
+        - operator: Exists
+      securityContext:
+        runAsNonRoot: true
+        runAsUser: 65532
+        runAsGroup: 65532
+        seccompProfile:
+          type: RuntimeDefault
+      initContainers:
+        # artifactapi is distroless with no exit-0 flag, so run a static busybox as `true`
+        - name: copy-true
+          image: busybox:1.37.0-musl
+          imagePullPolicy: IfNotPresent
+          command: ["cp", "/bin/busybox", "/keeper/true"]
+          volumeMounts:
+            - name: keeper
+              mountPath: /keeper
+          resources:
+            limits:
+              cpu: 10m
+              memory: 16Mi
+            requests:
+              cpu: 1m
+              memory: 4Mi
+          securityContext:
+            allowPrivilegeEscalation: false
+            readOnlyRootFilesystem: true
+            capabilities:
+              drop: ["ALL"]
+        - name: api
+          image: artifactapi.k8s.syd1.au.unkin.net/docker-internal/artifactapi:v3.13.1
+          imagePullPolicy: IfNotPresent
+          command: ["/keeper/true"]
+          volumeMounts:
+            - name: keeper
+              mountPath: /keeper
+              readOnly: true
+          resources:
+            limits:
+              cpu: 10m
+              memory: 16Mi
+            requests:
+              cpu: 1m
+              memory: 4Mi
+          securityContext:
+            allowPrivilegeEscalation: false
+            readOnlyRootFilesystem: true
+            capabilities:
+              drop: ["ALL"]
+        - name: ui
+          image: artifactapi.k8s.syd1.au.unkin.net/docker-internal/artifactapi-ui:v3.13.1
+          imagePullPolicy: IfNotPresent
+          command: ["true"]
+          resources:
+            limits:
+              cpu: 10m
+              memory: 16Mi
+            requests:
+              cpu: 1m
+              memory: 4Mi
+          securityContext:
+            allowPrivilegeEscalation: false
+            readOnlyRootFilesystem: true
+            capabilities:
+              drop: ["ALL"]
+      containers:
+        - name: pause
+          image: rancher/mirrored-pause:3.6
+          imagePullPolicy: IfNotPresent
+          resources:
+            limits:
+              cpu: 10m
+              memory: 16Mi
+            requests:
+              cpu: 1m
+              memory: 4Mi
+          securityContext:
+            allowPrivilegeEscalation: false
+            readOnlyRootFilesystem: true
+            capabilities:
+              drop: ["ALL"]
+      volumes:
+        - name: keeper
+          emptyDir: {}

apps/base/artifactapi/kustomization.yaml

@@ -11,6 +11,7 @@ resources:
   - cnpg_pooler.yaml
   - gateway.yaml
   - httproute.yaml
+  - image-keeper.yaml
   - namespace.yaml
   - oauth2-proxy-configmap.yaml
   - oauth2-proxy-deployment.yaml

apps/base/artifactapi/ui-deployment.yaml

@@ -22,7 +22,7 @@ spec:
       automountServiceAccountToken: true
       containers:
         - name: ui
-          image: git.unkin.net/unkin/artifactapi-ui:v3.12.0
+          image: artifactapi.k8s.syd1.au.unkin.net/docker-internal/artifactapi-ui:v3.13.1
           imagePullPolicy: IfNotPresent
           ports:
             - containerPort: 80

apps/base/pdbmux/deployment.yaml

@@ -25,7 +25,7 @@ spec:
         - name: pdbmux
           # Image is published by the pdbmux repo's .woodpecker/docker.yaml on
           # a v* tag. It only exists after that tag is cut (see PR merge gates).
-          image: artifactapi.k8s.syd1.au.unkin.net/docker-internal/pdbmux:v0.4.0
+          image: artifactapi.k8s.syd1.au.unkin.net/docker-internal/pdbmux:v0.5.0
           imagePullPolicy: IfNotPresent
           ports:
             - containerPort: 8080