Merge pull request #12 from packethost/ca-as-secret

save CA as secret

Author: deitch

Makefile

@@ -122,7 +122,7 @@ endif
 	$(GO) run -mod=vendor vendor/sigs.k8s.io/controller-tools/cmd/controller-gen/main.go all
 	# patch the particular image tag we will want to deploy
 	@echo "updating kustomize image patch file for manager resource"
-	sed -i'' -e 's@PATCH_ME_IMAGE@image: '"$(PATCH_IMAGE_TAG)"'@' ./config/default/manager_image_patch.yaml
+	sed -i'' -e 's@PATCH_ME_IMAGE@'"$(PATCH_IMAGE_TAG)"'@' ./config/default/manager_image_patch.yaml
 	# create the manifests
 	$(KUBECTL) kustomize vendor/sigs.k8s.io/cluster-api/config/default/ > $(PROVIDERYAML)
 	echo "---" >> $(PROVIDERYAML)

README.md

@@ -11,7 +11,7 @@ To use the cluster-api to deploy a Kubernetes cluster to Packet, you need the fo
 * A Packet API key
 * A Packet project ID
 * The `clusterctl` binary from this repository.
-* A Kubernetes cluster - the "bootstrap cluster" - that will deploy and manage the cluster on Packet. 
+* A Kubernetes cluster - the "bootstrap cluster" - that will deploy and manage the cluster on Packet.
 * `kubectl` - not absolutely required, but hard to interact with a cluster without it
 
 For the bootstrap cluster, any cluster is just fine for this, including [k3s](https://k3s.io), [k3d](https://github.com/rancher/k3d) and [kind](https://github.com/kubernetes-sigs/kind).
@@ -34,13 +34,15 @@ To deploy a cluster:
    *  `CLUSTER_NAME` - The created cluster will have this name. If not set, it will generate one for you.
    *  `FACILITY` - The Packet facility where you wantto deploy the cluster. If not set, it will default to `ewr1`.
    *  `SSH_KEY` - The path to an ssh public key to place on all of the machines. If not set, it will use whichever ssh keys are defined for your project.
+   *  `CA_KEY` - The path to a file with the CA private key. If not set, it will generate one for you.
+   *  `CA_CERT` - The path to a file with the CA certificate. If not set, it will generate one for you.
 1. Create the config files you need via `./generate-yaml.sh`. This will generate the following files in [out/packet](./out/packet):
    * `cluster.yaml`
    * `machines.yaml`
-   * `provider-components.yaml` - note that this file _will_ contain your secrets, specifically `PACKET_API_KEY`, to be loaded into the cluster
+   * `provider-components.yaml` - note that this file _will_ contain your secrets, specifically `PACKET_API_KEY`, to be loaded into the cluster, and optionally your CA private key, if provided (but not if auto-generated)
    * `addons.yaml` - note that this file _will_ contain your secrets, specifically `PACKET_API_KEY`, to be loaded into the cluster
 1. If desired, edit the following files:
-   * `cluster.yaml` - to change parameters or settings, including network CIDRs, and, if desired, your own CA certificate and key
+   * `cluster.yaml` - to change parameters or settings, including network CIDRs
    * `machines.yaml` - to change parameters or settings, including machine types and quantity
 1. Run `clusterctl` with the appropriate command.
 
@@ -72,7 +74,6 @@ Run `clusterctl create cluster --help` for more options, for example to use an e
 
 If you do not change the generated `yaml` files, it will use defaults. You can look in the `*.yaml.template` files in [cmd/clusterctl/examples/packet/](./cmd/clusterctl/examples/packet/) for details.
 
-* CA key/certificate: leave blank, which will cause the `manager` to create one.
 * service CIDR: `172.25.0.0/16`
 * pod CIDR: `172.26.0.0/16`
 * service domain: `cluster.local`
@@ -112,7 +113,7 @@ Note that, unlike `clusterctl`, this method will not take care of the following:
 
 The components deployed via the `yaml` files are the following:
 
-* `cluster.yaml` - contains 
+* `cluster.yaml` - contains
   * a single `Cluster` CRD which defines the new cluster to be deployed. Includes cluster-wide definitions, including cidr definitions for services and pods.
 * `machines.yaml` - contains
   * one or more `Machine` CRDs, which cause the deployment of individual server instance to serve as Kubernetes master or worker nodes.
@@ -142,9 +143,9 @@ The Packet cluster-api provider follows the standard design for cluster-api. It
 The actual machines are deployed using `kubeadm`. The deployment process uses the following process.
 
 1. When a new `Cluster` is created:
-   * if the `ClusterSpec` does not include a CA key/certificate pair, create one and save it on the `Cluster` object
+   * if the appropriate `Secret` does not include a CA key/certificate pair, create one and save it in that `Secret`
 2. When a new master `Machine` is created:
-   * retrieve the CA certificate and key from the `Cluster` object
+   * retrieve the CA certificate and key from the appropriate Kubernetes `Secret`
    * launch a new server instance on Packet
    * set the `cloud-init` on the instance to run `kubeadm init`, passing it the CA certificate and key
 3. When a new worker `Machine` is created:
@@ -265,5 +266,3 @@ Important notes:
 ## References
 
 * [kubeadm yaml api](https://godoc.org/k8s.io/kubernetes/cmd/kubeadm/app/apis/kubeadm/v1beta2)
-
-

cmd/clusterctl/main.go

@@ -22,13 +22,20 @@ import (
 	"github.com/packethost/cluster-api-provider-packet/pkg/cloud/packet"
 	"github.com/packethost/cluster-api-provider-packet/pkg/cloud/packet/deployer"
 	"github.com/packethost/cluster-api-provider-packet/pkg/cloud/packet/util"
+	kclient "k8s.io/client-go/kubernetes"
+	clientv1 "k8s.io/client-go/kubernetes/typed/core/v1"
 	"k8s.io/klog"
 	"sigs.k8s.io/cluster-api/cmd/clusterctl/cmd"
 	"sigs.k8s.io/cluster-api/pkg/apis/cluster/common"
+	"sigs.k8s.io/controller-runtime/pkg/client/config"
 )
 
 func main() {
-	var err error
+	var (
+		err           error
+		kube          *kclient.Clientset
+		secretsGetter clientv1.SecretsGetter
+	)
 
 	flag.Parse()
 
@@ -38,10 +45,19 @@ func main() {
 		klog.Fatalf("unable to get Packet client: %v", err)
 	}
 
+	cfg, _ := config.GetConfig()
+	if cfg != nil {
+		kube, _ = kclient.NewForConfig(cfg)
+	}
+	if kube != nil {
+		secretsGetter = kube.CoreV1()
+	}
+
 	// get a deployer, which is needed at various stages
 	deployer, err := deployer.New(deployer.Params{
-		Port:   util.ControlPort,
-		Client: client,
+		Port:          util.ControlPort,
+		SecretsGetter: secretsGetter,
+		Client:        client,
 	})
 	if err != nil {
 		klog.Fatalf("unable to get deployer: %v", err)

cmd/manager/main.go

@@ -27,6 +27,7 @@ import (
 	"github.com/packethost/cluster-api-provider-packet/pkg/cloud/packet/actuators/machine/machineconfig"
 	"github.com/packethost/cluster-api-provider-packet/pkg/cloud/packet/deployer"
 	"github.com/packethost/cluster-api-provider-packet/pkg/cloud/packet/util"
+	kclient "k8s.io/client-go/kubernetes"
 	"k8s.io/klog"
 	clusterapis "sigs.k8s.io/cluster-api/pkg/apis"
 	"sigs.k8s.io/cluster-api/pkg/apis/cluster/common"
@@ -67,6 +68,10 @@ func main() {
 	if err != nil {
 		klog.Fatalf(err.Error())
 	}
+	kube, err := kclient.NewForConfig(cfg)
+	if err != nil {
+		klog.Fatalf(err.Error())
+	}
 
 	// get a packet client
 	client, err := packet.GetClient()
@@ -75,8 +80,9 @@ func main() {
 	}
 	// get a deployer, which is needed at various stages
 	deployer, err := deployer.New(deployer.Params{
-		Client: client,
-		Port:   util.ControlPort,
+		Client:        client,
+		SecretsGetter: kube.CoreV1(),
+		Port:          util.ControlPort,
 	})
 	if err != nil {
 		klog.Fatalf(err.Error())
@@ -85,6 +91,7 @@ func main() {
 	clusterInterface := cs.ClusterV1alpha1()
 	clusterActuator, err := cluster.NewActuator(cluster.ActuatorParams{
 		ClustersGetter: clusterInterface,
+		SecretsGetter:  kube.CoreV1(),
 		Deployer:       deployer,
 	})
 	if err != nil {
@@ -100,6 +107,7 @@ func main() {
 	machineActuator, err := machine.NewActuator(machine.ActuatorParams{
 		MachinesGetter:      clusterInterface,
 		MachineConfigGetter: getter,
+		SecretsGetter:       kube.CoreV1(),
 		Client:              client,
 		Deployer:            deployer,
 	})

config/crds/packetprovider_v1alpha1_packetclusterproviderspec.yaml

@@ -19,20 +19,6 @@ spec:
             of an object. Servers should convert recognized schemas to the latest
             internal value, and may reject unrecognized values. More info: https://git.k8s.io/community/contributors/devel/api-conventions.md#resources'
           type: string
-        caKeyPair:
-          description: CAKeyPair is the key pair for ca certs.
-          properties:
-            cert:
-              description: base64 encoded cert and key
-              format: byte
-              type: string
-            key:
-              format: byte
-              type: string
-          required:
-          - cert
-          - key
-          type: object
         kind:
           description: 'Kind is a string value representing the REST resource this
             object represents. Servers may infer this from the endpoint the client

config/kustomization.yaml

@@ -1,11 +1,13 @@
 # Adds namespace to all resources.
+# This must match PRECISELY what is in the constant in pkg/cloud/packet/util.CAPPNamespace
 namespace: cluster-api-provider-packet-system
 
 # Value of this field is prepended to the
 # names of all resources, e.g. a deployment named
 # "wordpress" becomes "alices-wordpress".
 # Note that it should also match with the prefix (text before '-') of the namespace
 # field above.
+# This must match PRECISELY what is in the constant in pkg/cloud/packet/util.CAPPPrefix
 namePrefix: cluster-api-provider-packet-
 
 bases:

config/manager/manager.yaml

@@ -103,3 +103,13 @@ stringData:
   apiKey: $PACKET_API_KEY
   projectID: $PACKET_PROJECT_ID
 type: Opaque
+---
+apiVersion: v1
+kind: Secret
+metadata:
+  name: ca-$CLUSTER_NAME
+  namespace: system
+stringData:
+  key: $CA_KEY
+  certificate: $CA_CERT
+type: Opaque

generate-yaml.sh

@@ -126,7 +126,6 @@ if [ -z "$PACKET_API_KEY" ]; then
   exit 1
 fi
 
-
 mkdir -p ${OUTPUT_DIR}
 
 SSH_KEY=${SSH_KEY:-}
@@ -141,13 +140,42 @@ else
   SSH_KEY=$SSH_PUBLIC_FILE
 fi
 
+CA_KEY="${CA_KEY:-}"
+CA_CERT="${CA_CERT:-}"
+CA_KEY_CONTENT=
+CA_CERT_CONTENT=
+if [ -z "$CA_KEY" -o -z "$CA_CERT" ]; then
+  echo "CA key and CA certificate not provided, will generate automatically"
+elif [ ! -e "$CA_KEY" ]; then
+	echo "CA private key file $CA_KEY does not exist" >&2
+	exit 1
+elif [ ! -e "$CA_CERT" ]; then
+	echo "CA certificate file $CA_CERT does not exist" >&2
+	exit 1
+else
+	CA_KEY_CONTENT=$(cat $CA_KEY | base64 | tr -d '\r\n')
+	CA_CERT_CONTENT=$(cat $CA_CERT | base64 | tr -d '\r\n')
+fi
+# to be sane about the output
+if [ -z "$CA_KEY_CONTENT" ]; then
+	CA_KEY_CONTENT="''"
+fi
+if [ -z "$CA_CERT_CONTENT" ]; then
+	CA_CERT_CONTENT="''"
+fi
+
+
+
 # By default, linux wraps base64 output every 76 cols, so we use 'tr -d' to remove whitespaces.
 # Note 'base64 -w0' doesn't work on Mac OS X, which has different flags.
 SSH_PUBLIC=$(cat $SSH_KEY | base64 | tr -d '\r\n')
 
 cat $PROVIDER_TEMPLATE_FILE \
+  | sed -e "s/\$CLUSTER_NAME/$CLUSTER_NAME/" \
   | sed -e "s/\$PACKET_PROJECT_ID/$PACKET_PROJECT_ID/" \
-  | sed -e "s/\$PACKET_API_KEY/$PACKET_API_KEY/" > $PROVIDER_GENERATED_FILE
+  | sed -e "s/\$PACKET_API_KEY/$PACKET_API_KEY/" \
+  | sed -e "s/\$CA_KEY/$CA_KEY_CONTENT/" \
+  | sed -e "s/\$CA_CERT/$CA_CERT_CONTENT/" > $PROVIDER_GENERATED_FILE
 
 cat $MACHINE_TEMPLATE_FILE \
   | sed -e "s/\$CLUSTER_NAME/$CLUSTER_NAME/" \

go.mod

@@ -18,7 +18,6 @@ require (
 	go.uber.org/zap v1.10.0 // indirect
 	golang.org/x/net v0.0.0-20190613194153-d28f0bde5980
 	golang.org/x/time v0.0.0-20190308202827-9d24e82272b4 // indirect
-
 	k8s.io/api v0.0.0-20190222213804-5cb15d344471
 	k8s.io/apimachinery v0.0.0-20190703205208-4cfb76a8bf76
 	k8s.io/client-go v10.0.0+incompatible

pkg/apis/packetprovider/v1alpha1/packetclusterproviderspec_types.go

@@ -33,16 +33,6 @@ type PacketClusterProviderSpec struct {
 	metav1.ObjectMeta `json:"metadata,omitempty"`
 
 	ProjectID string `json:"projectID"`
-
-	// CAKeyPair is the key pair for ca certs.
-	CAKeyPair KeyPair `json:"caKeyPair,omitempty"`
-}
-
-// KeyPair is how operators can supply custom keypairs for kubeadm to use.
-type KeyPair struct {
-	// base64 encoded cert and key
-	Cert []byte `json:"cert"`
-	Key  []byte `json:"key"`
 }
 
 // +k8s:deepcopy-gen:interfaces=k8s.io/apimachinery/pkg/runtime.Object