Apply strategic merge patch kustomize

Create a strategic merge patch and register it in kustomization.yaml

cat > patch.yaml <<EOF
apiVersion: apps/v1
kind: Deployment
metadata:
  name: myapp
spec:
  replicas: 3
  template:
    spec:
      containers:
      - name: myapp
        resources:
          limits:
            memory: 512Mi
EOF
echo 'patches:\n- path: patch.yaml' >> kustomization.yaml

#kustomize #k8s #patch #strategic-merge

more kustomize all 23 commands →

Inflate Helm charts in kustomize build kustomize build --enable-helm ./overlay Apply a reusable component overlay cat <<'EOF' >> kustomization.yaml components: - ../../components/monitoring EOF Copy a field with replacements cat <<'EOF' >> kustomization.yaml replacements: - source: {kind: ConfigMap, name: cfg, fieldPath: data.host} targets: - select: {kind: Deployment} fieldPaths: [spec.template.spec.containers.0.env.0.value] EOF Inline patch with target selector cat <<'EOF' >> kustomization.yaml patches: - target: {kind: Deployment, labelSelector: app=api} patch: |- - op: replace path: /spec/replicas value: 3 EOF Pin image by digest and rename kustomize edit set image app=registry.example.com/app@sha256:<id>