scripts: add ignore-not-found for undeploy to Makefile boiler plate

This avoid undeploy failure if for some reason one of the
kustomized resource is missing.

Part of 5195

Signed-off-by: Samuel Gaist <samuel.gaist@idiap.ch>

Author: sgaist

changelog/fragments/01-handle-missing-resources-when-uninstalling-undeploying.yaml

@@ -0,0 +1,38 @@
+# entries is a list of entries to include in
+# release notes and/or the migration guide
+entries:
+  - description: >
+      The make uninstall and undeploy command from the generated Makefile
+      now properly handle missing kustomized resources.
+
+    # kind is one of:
+    # - addition
+    # - change
+    # - deprecation
+    # - removal
+    # - bugfix
+    kind: "bufix"
+
+    # Is this a breaking change?
+    breaking: false
+
+    # NOTE: ONLY USE `pull_request_override` WHEN ADDING THIS
+    # FILE FOR A PREVIOUSLY MERGED PULL_REQUEST!
+    #
+    # The generator auto-detects the PR number from the commit
+    # message in which this file was originally added.
+    #
+    # What is the pull request number (without the "#")?
+    # pull_request_override: 0
+
+
+    # Migration can be defined to automatically add a section to
+    # the migration guide. This is required for breaking changes.
+    # migration:
+    #   header: Header text for the migration section
+    #   body: |
+    #     Body of the migration section. This should be formatted as markdown and can
+    #     span multiple lines.
+    #
+    #     Using the YAML string '|' operator means that newlines in this string will
+    #     be honored and interpretted as newlines in the rendered markdown.

internal/plugins/helm/v1/scaffolds/internal/templates/makefile.go

@@ -118,13 +118,17 @@ docker-buildx: ## Build and push docker image for the manager for cross-platform
 
 ##@ Deployment
 
+ifndef ignore-not-found
+  ignore-not-found = false
+endif
+
 .PHONY: install
 install: kustomize ## Install CRDs into the K8s cluster specified in ~/.kube/config.
 	$(KUSTOMIZE) build config/crd | kubectl apply -f -
 
 .PHONY: uninstall
 uninstall: kustomize ## Uninstall CRDs from the K8s cluster specified in ~/.kube/config.
-	$(KUSTOMIZE) build config/crd | kubectl delete -f -
+	$(KUSTOMIZE) build config/crd | kubectl delete --ignore-not-found=$(ignore-not-found) -f -
 
 .PHONY: deploy
 deploy: kustomize ## Deploy controller to the K8s cluster specified in ~/.kube/config.
@@ -133,7 +137,7 @@ deploy: kustomize ## Deploy controller to the K8s cluster specified in ~/.kube/c
 
 .PHONY: undeploy
 undeploy: ## Undeploy controller from the K8s cluster specified in ~/.kube/config.
-	$(KUSTOMIZE) build config/default | kubectl delete -f -
+	$(KUSTOMIZE) build config/default | kubectl delete --ignore-not-found=$(ignore-not-found) -f -
 
 OS := $(shell uname -s | tr '[:upper:]' '[:lower:]')
 ARCH := $(shell uname -m | sed 's/x86_64/amd64/' | sed 's/aarch64/arm64/')

testdata/helm/memcached-operator/Makefile

@@ -103,13 +103,17 @@ docker-buildx: ## Build and push docker image for the manager for cross-platform
 
 ##@ Deployment
 
+ifndef ignore-not-found
+  ignore-not-found = false
+endif
+
 .PHONY: install
 install: kustomize ## Install CRDs into the K8s cluster specified in ~/.kube/config.
 	$(KUSTOMIZE) build config/crd | kubectl apply -f -
 
 .PHONY: uninstall
 uninstall: kustomize ## Uninstall CRDs from the K8s cluster specified in ~/.kube/config.
-	$(KUSTOMIZE) build config/crd | kubectl delete -f -
+	$(KUSTOMIZE) build config/crd | kubectl delete --ignore-not-found=$(ignore-not-found) -f -
 
 .PHONY: deploy
 deploy: kustomize ## Deploy controller to the K8s cluster specified in ~/.kube/config.
@@ -118,7 +122,7 @@ deploy: kustomize ## Deploy controller to the K8s cluster specified in ~/.kube/c
 
 .PHONY: undeploy
 undeploy: ## Undeploy controller from the K8s cluster specified in ~/.kube/config.
-	$(KUSTOMIZE) build config/default | kubectl delete -f -
+	$(KUSTOMIZE) build config/default | kubectl delete --ignore-not-found=$(ignore-not-found) -f -
 
 OS := $(shell uname -s | tr '[:upper:]' '[:lower:]')
 ARCH := $(shell uname -m | sed 's/x86_64/amd64/' | sed 's/aarch64/arm64/')