Makefile: create default yamls, configurable namespace

- Create default yamls for deploying master and worker.
- Use kube-system namespace by default.
- Configurable namespace:
  make IMAGE_REGISTRY=myhost:5000 K8S_NAMESPACE=my-nfd-devel

Makefile

@@ -1,4 +1,5 @@
-.PHONY: all test
+.PHONY: all test yamls
+.FORCE:
 
 IMAGE_BUILD_CMD := docker build
 
@@ -9,14 +10,28 @@ IMAGE_NAME := node-feature-discovery
 IMAGE_TAG_NAME := $(VERSION)
 IMAGE_REPO := $(IMAGE_REGISTRY)/$(IMAGE_NAME)
 IMAGE_TAG := $(IMAGE_REPO):$(IMAGE_TAG_NAME)
+K8S_NAMESPACE := kube-system
 
+yaml_templates := $(wildcard *.yaml.template)
+yaml_instances := $(patsubst %.yaml.template,%.yaml,$(yaml_templates))
 
 all: image
 
-image:
+image: yamls
 	$(IMAGE_BUILD_CMD) --build-arg NFD_VERSION=$(VERSION) \
 		-t $(IMAGE_TAG) ./
 
+yamls: $(yaml_instances)
+
+%.yaml: %.yaml.template .FORCE
+	@echo "$@: namespace: ${K8S_NAMESPACE}"
+	@echo "$@: image: ${IMAGE_TAG}"
+	@sed -E \
+	     -e s',^(\s*)name: node-feature-discovery # NFD namespace,\1name: ${K8S_NAMESPACE},' \
+	     -e s',^(\s*)image:.+$$,\1image: ${IMAGE_TAG},' \
+	     -e s',^(\s*)namespace:.+$$,\1namespace: ${K8S_NAMESPACE},' \
+	     $< > $@
+
 mock:
 	mockery --name=FeatureSource --dir=source --inpkg --note="Re-generate by running 'make mock'"
 	mockery --name=APIHelpers --dir=pkg/apihelper --inpkg --note="Re-generate by running 'make mock'"

README.md

@@ -436,16 +436,18 @@ If you want to use the latest development version (master branch) you need to
 
 #### nfd-master
 
-Nfd-master runs as a DaemonSet, by default in the master node(s) only. You can
-use the template spec provided to deploy nfd-master. If deploying a custom
-image, you need to update the template to use the correct image (for the latest
-released version, omit the `sed` part):
+Nfd-master runs as a DaemonSet, by default in the master node(s)
+only. You can use the template spec provided to deploy nfd-master, or
+use `nfd-master.yaml` generated by `Makefile`. The latter includes
+`image:` and `namespace:` definitions that match the latest built
+image. Example:
 ```
-sed -E s',^(\s*)image:.+$,\1image: <YOUR_IMAGE_REPO>:<YOUR_IMAGE_TAG>,' nfd-master.yaml.template > nfd-master.yaml
+make IMAGE_TAG=<IMAGE_TAG>
+docker push <IMAGE_TAG>
 kubectl create -f nfd-master.yaml
 ```
 Nfd-master listens for connections from nfd-worker(s) and connects to the
-Kubernetes API server to adds node labels advertised by them.
+Kubernetes API server to add node labels advertised by them.
 
 If you have RBAC authorization enabled (as is the default e.g. with clusters
 initialized with kubeadm) you need to configure the appropriate ClusterRoles,
@@ -456,12 +458,14 @@ labels. The provided template will configure these for you.
 #### nfd-worker
 
 Nfd-worker is preferably run as a Kubernetes DaemonSet. There is an
-example spec that can be used as a template, or, as is when just trying out the
-service. Similarly to nfd-master above, if using a custom-built image you need
-to update the template with the correct image (for the latest release, omit the
-`sed` part):
+example spec (`nfd-worker-daemonset.yaml.template`) that can be used
+as a template, or, as is when just trying out the service. Similarly
+to nfd-master above, the `Makefile` also generates
+`nfd-worker-daemonset.yaml` from the template that you can use to
+deploy the latest image. Example:
 ```
-sed -E s',^(\s*)image:.+$,\1image: <YOUR_IMAGE_REPO>:<YOUR_IMAGE_TAG>,' nfd-worker-daemonset.yaml.template > nfd-worker-daemonset.yaml
+make IMAGE_TAG=<IMAGE_TAG>
+docker push <IMAGE_TAG>
 kubectl create -f nfd-worker-daemonset.yaml
 ```
 
@@ -475,7 +479,7 @@ Feature discovery can alternatively be configured as a one-shot job. There is
 an example script in this repo that demonstrates how to deploy the job in the cluster.
 
 ```
-./label-nodes.sh [<YOUR_IMAGE_REPO>:<YOUR_IMAGE_TAG>]
+./label-nodes.sh [<IMAGE_TAG>]
 ```
 
 The label-nodes.sh script tries to launch as many jobs as there are Ready nodes.
@@ -592,7 +596,7 @@ make
 Optional, this example with Docker.
 
 ```
-docker push <image registry>/<image-name>:<version>
+docker push <IMAGE_TAG>
 ```
 
 **Change the job spec to use your custom image (optional):**
@@ -614,6 +618,7 @@ name of the resulting container image.
 | IMAGE_TAG_NAME  | Container image tag name             | &lt;nfd version&gt;
 | IMAGE_REPO      | Container image repository to use    | &lt;IMAGE_REGISTRY&gt;/&lt;IMAGE_NAME&gt;
 | IMAGE_TAG       | Full image:tag to tag the image with | &lt;IMAGE_REPO&gt;/&lt;IMAGE_NAME&gt;
+| K8S_NAMESPACE   | nfd-master and nfd-worker namespace  | kube-system
 
 For example, to use a custom registry:
 ```
@@ -672,7 +677,7 @@ This is open source software released under the [Apache 2.0 License](LICENSE).
 
 ## Demo
 
-A demo on the benefits of using node feature discovery can be found in [demo](demo/). 
+A demo on the benefits of using node feature discovery can be found in [demo](demo/).
 
 <!-- Links -->
 [cpuid]: http://man7.org/linux/man-pages/man4/cpuid.4.html

label-nodes.sh

@@ -1,23 +1,36 @@
 #!/usr/bin/env bash
 this=`basename $0`
-if [ $# -gt 1 ]; then
+if [ $# -gt 1 ] || [ "$1" == "-h" ] || [ "$1" == "--help" ]; then
     echo Usage: $this [IMAGE[:TAG]]
     exit 1
 fi
 
+IMAGE=$1
+if [ -n "$IMAGE" ]; then
+    if [ ! -f nfd-worker-job.yaml ]; then
+        make IMAGE_TAG=$IMAGE nfd-worker-job.yaml
+    else
+        # Keep existing nfd-worker-job.yaml, only update image.
+        sed -E "s,^(\s*)image:.+$,\1image: $IMAGE," -i nfd-worker-job.yaml
+    fi
+fi
+
+if [ ! -f nfd-worker-job.yaml ]; then
+    # Missing image info for the labeling job.
+    echo "nfd-worker-job.yaml missing."
+    echo "Run 'make nfd-worker-job.yaml', use the template or provide IMAGE (see --help)."
+    exit 2
+fi
+
 # Get the number of nodes in Ready state in the Kubernetes cluster
 NumNodes=$(kubectl get nodes | grep -i ' ready ' | wc -l)
 
 # We set the .spec.completions and .spec.parallelism to the node count
 # We request a specific hostPort in the job spec to limit the number of pods
 # that run on a node to one. As a result, one pod runs on each node in parallel
-# We set the NODE_NAME environemnt variable to get the Kubernetes node object.
-sed -e "s/COMPLETION_COUNT/$NumNodes/" \
-    -e "s/PARALLELISM_COUNT/$NumNodes/" \
-    nfd-worker-job.yaml.template > nfd-worker-job.yaml
-
-if [ -n "$1" ]; then
-    sed -E "s,^(\s*)image:.+$,\1image: $1," -i nfd-worker-job.yaml
-fi
+# We set the NODE_NAME environment variable to get the Kubernetes node object.
+sed -e "s/completions:.*$/completions: $NumNodes/" \
+    -e "s/parallelism:.*$/parallelism: $NumNodes/" \
+    -i nfd-worker-job.yaml
 
 kubectl create -f nfd-worker-job.yaml

nfd-daemonset-combined.yaml.template

@@ -5,7 +5,7 @@ apiVersion: v1
 kind: ServiceAccount
 metadata:
   name: nfd-master
-  namespace: default
+  namespace: node-feature-discovery
 ---
 apiVersion: rbac.authorization.k8s.io/v1
 kind: ClusterRole
@@ -32,7 +32,7 @@ roleRef:
 subjects:
 - kind: ServiceAccount
   name: nfd-master
-  namespace: default
+  namespace: node-feature-discovery
 ---
 apiVersion: apps/v1
 kind: DaemonSet
@@ -40,6 +40,7 @@ metadata:
   labels:
     app: nfd
   name: nfd
+  namespace: node-feature-discovery
 spec:
   selector:
     matchLabels:

nfd-master.yaml.template

@@ -1,8 +1,13 @@
 apiVersion: v1
+kind: Namespace
+metadata:
+  name: node-feature-discovery # NFD namespace
+---
+apiVersion: v1
 kind: ServiceAccount
 metadata:
   name: nfd-master
-  namespace: default
+  namespace: node-feature-discovery
 ---
 apiVersion: rbac.authorization.k8s.io/v1
 kind: ClusterRole
@@ -29,7 +34,7 @@ roleRef:
 subjects:
 - kind: ServiceAccount
   name: nfd-master
-  namespace: default
+  namespace: node-feature-discovery
 ---
 apiVersion: apps/v1
 kind: DaemonSet
@@ -37,6 +42,7 @@ metadata:
   labels:
     app: nfd-master
   name: nfd-master
+  namespace: node-feature-discovery
 spec:
   selector:
     matchLabels:
@@ -94,6 +100,7 @@ apiVersion: v1
 kind: Service
 metadata:
   name: nfd-master
+  namespace: node-feature-discovery
 spec:
   selector:
     app: nfd-master

nfd-worker-daemonset.yaml.template

@@ -4,6 +4,7 @@ metadata:
   labels:
     app: nfd-worker
   name: nfd-worker
+  namespace: node-feature-discovery
 spec:
   selector:
     matchLabels:

nfd-worker-job.yaml.template

@@ -4,6 +4,7 @@ metadata:
   labels:
     app: node-feature-discovery
   name: nfd-worker
+  namespace: node-feature-discovery
 spec:
   completions: COMPLETION_COUNT
   parallelism: PARALLELISM_COUNT