Merge branch 'master' of https://github.com/zalando/postgres-operator into standby

CODEOWNERS

@@ -1,2 +1,2 @@
 # global owners
-*        @alexeyklyukin @erthalion @sdudoladov @Jan-M @CyberDem0n @avaczi @FxKu
+*        @alexeyklyukin @erthalion @sdudoladov @Jan-M @CyberDem0n @avaczi @FxKu @RafiaSabih

docker/Dockerfile

@@ -6,4 +6,9 @@ RUN apk --no-cache add ca-certificates
 
 COPY build/* /
 
+RUN addgroup -g 1000 pgo
+RUN adduser -D -u 1000 -G pgo -g 'Postgres operator' pgo
+
+USER 1000:1000
+
 ENTRYPOINT ["/postgres-operator"]

docs/reference/cluster_manifest.md

@@ -257,6 +257,19 @@ under the `clone` top-level key and do not affect the already running cluster.
   timestamp. When this parameter is set the operator will not consider cloning
   from the live cluster, even if it is running, and instead goes to S3. Optional.
 
+* **s3_endpoint**
+  the url of the S3-compatible service should be set when cloning from non AWS S3. Optional.
+
+* **s3_access_key_id**
+  the access key id, used for authentication on S3 service. Optional.
+
+* **s3_secret_access_key**
+  the secret access key, used for authentication on S3 service. Optional.
+
+* **s3_force_path_style**
+  to enable path-style addressing(i.e., http://s3.amazonaws.com/BUCKET/KEY) when connecting to an S3-compatible service
+  that lack of support for sub-domain style bucket URLs (i.e., http://BUCKET.s3.amazonaws.com/KEY). Optional.
+
 ### EBS volume resizing
 
 Those parameters are grouped under the `volume` top-level key and define the

docs/reference/operator_parameters.md

@@ -32,7 +32,7 @@ configuration.
   kubectl create -f manifests/postgresql-operator-default-configuration.yaml
   kubectl get operatorconfigurations postgresql-operator-default-configuration -o yaml
   ```
-  Note that the operator first registers the CRD of the `OperatorConfiguration`
+  Note that the operator first attempts to register the CRD of the `OperatorConfiguration`
   and then waits for an instance to be created. In between these two event the
   operator pod may be failing since it cannot fetch the not-yet-existing
   `OperatorConfiguration` instance.

docs/user.md

@@ -41,6 +41,15 @@ $ kubectl create -f manifests/minimal-postgres-manifest.yaml
 $ kubectl get pods -w --show-labels
 ```
 
+## Give K8S users access to create/list postgresqls
+
+```bash
+$ kubectl create -f manifests/user-facing-clusterroles.yaml
+```
+
+Creates zalando-postgres-operator:users:view, :edit and :admin clusterroles that are
+aggregated into the default roles.
+
 ## Connect to PostgreSQL
 
 With a `port-forward` on one of the database pods (e.g. the master) you can
@@ -254,6 +263,24 @@ metadata:
 Note that timezone is required for `timestamp`. Otherwise, offset is relative
 to UTC, see [RFC 3339 section 5.6) 3339 section 5.6](https://www.ietf.org/rfc/rfc3339.txt).
 
+For non AWS S3 following settings can be set to support cloning from other S3 implementations:
+
+```yaml
+apiVersion: "acid.zalan.do/v1"
+kind: postgresql
+metadata:
+  name: acid-test-cluster
+spec:
+  clone:
+    uid: "efd12e58-5786-11e8-b5a7-06148230260c"
+    cluster: "acid-batman"
+    timestamp: "2017-12-19T12:40:33+01:00"
+    s3_endpoint: https://s3.acme.org
+    s3_access_key_id: 0123456789abcdef0123456789abcdef
+    s3_secret_access_key: 0123456789abcdef0123456789abcdef
+    s3_force_path_style: true
+```
+
 ## Setting up a standby cluster
 
 Standby clusters are like normal cluster but they are streaming from a remote cluster. Patroni supports it, [read this](https://github.com/zalando/patroni/blob/bd2c54581abb42a7d3a3da551edf0b8732eefd27/docs/replica_bootstrap.rst#standby-cluster) to know more about them.
@@ -265,6 +292,7 @@ spec:
   standby:
     s3_wal_path: "s3 bucket path to the master"
 ```
+
 Things to note:
 
 - An empty string is provided in s3_wal_path of the standby cluster will result in error and no statefulset will be created.

manifests/postgres-operator.yaml

@@ -21,6 +21,10 @@ spec:
           limits:
             cpu: 2000m
             memory: 500Mi
+        securityContext:
+          runAsUser: 1000
+          runAsNonRoot: true
+          readOnlyRootFilesystem: true
         env:
         # provided additional ENV vars can overwrite individual config map entries  
         - name: CONFIG_MAP_NAME

manifests/user-facing-clusterroles.yaml

@@ -0,0 +1,51 @@
+apiVersion: rbac.authorization.k8s.io/v1
+kind: ClusterRole
+metadata:
+  labels:
+    rbac.authorization.k8s.io/aggregate-to-admin: "true"
+  name: zalando-postgres-operator:users:admin
+rules:
+- apiGroups:
+  - acid.zalan.do
+  resources:
+  - postgresqls
+  - postgresqls/status
+  verbs:
+  - "*"
+
+---
+apiVersion: rbac.authorization.k8s.io/v1
+kind: ClusterRole
+metadata:
+  labels:
+    rbac.authorization.k8s.io/aggregate-to-edit: "true"
+  name: zalando-postgres-operator:users:edit
+rules:
+- apiGroups:
+  - acid.zalan.do
+  resources:
+  - postgresqls
+  verbs:
+  - create
+  - update
+  - patch
+  - delete
+
+---
+apiVersion: rbac.authorization.k8s.io/v1
+kind: ClusterRole
+metadata:
+  labels:
+    rbac.authorization.k8s.io/aggregate-to-view: "true"
+  name: zalando-postgres-operator:users:view
+rules:
+- apiGroups:
+  - acid.zalan.do
+  resources:
+  - postgresqls
+  - postgresqls/status
+  verbs:
+  - get
+  - list
+  - watch
+

pkg/apis/acid.zalan.do/v1/postgresql_type.go

@@ -125,6 +125,10 @@ type CloneDescription struct {
 	UID               string `json:"uid,omitempty"`
 	EndTimestamp      string `json:"timestamp,omitempty"`
 	S3WalPath         string `json:"s3_wal_path,omitempty"`
+	S3Endpoint        string `json:"s3_endpoint,omitempty"`
+	S3AccessKeyId     string `json:"s3_access_key_id,omitempty"`
+	S3SecretAccessKey string `json:"s3_secret_access_key,omitempty"`
+	S3ForcePathStyle  *bool  `json:"s3_force_path_style,omitempty" defaults:"false"`
 }
 
 // Sidecar defines a container to be run in the same pod as the Postgres container.

pkg/apis/acid.zalan.do/v1/util_test.go

@@ -61,12 +61,12 @@ var cloneClusterDescriptions = []struct {
 	in  *CloneDescription
 	err error
 }{
-	{&CloneDescription{"foo+bar", "", "NotEmpty", ""}, nil},
+	{&CloneDescription{"foo+bar", "", "NotEmpty", "", "", "", "", nil}, nil},
-	{&CloneDescription{"foo+bar", "", "", ""},
+	{&CloneDescription{"foo+bar", "", "", "", "", "", "", nil},
 		errors.New(`clone cluster name must confirm to DNS-1035, regex used for validation is "^[a-z]([-a-z0-9]*[a-z0-9])?$"`)},
-	{&CloneDescription{"foobar123456789012345678901234567890123456789012345678901234567890", "", "", ""},
+	{&CloneDescription{"foobar123456789012345678901234567890123456789012345678901234567890", "", "", "", "", "", "", nil},
 		errors.New("clone cluster name must be no longer than 63 characters")},
-	{&CloneDescription{"foobar", "", "", ""}, nil},
+	{&CloneDescription{"foobar", "", "", "", "", "", "", nil}, nil},
 }
 
 var maintenanceWindows = []struct {

pkg/apis/acid.zalan.do/v1/zz_generated.deepcopy.go

@@ -50,6 +50,11 @@ func (in *AWSGCPConfiguration) DeepCopy() *AWSGCPConfiguration {
 // DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
 func (in *CloneDescription) DeepCopyInto(out *CloneDescription) {
 	*out = *in
+	if in.S3ForcePathStyle != nil {
+		in, out := &in.S3ForcePathStyle, &out.S3ForcePathStyle
+		*out = new(bool)
+		**out = **in
+	}
 	return
 }
 
@@ -459,7 +464,7 @@ func (in *PostgresSpec) DeepCopyInto(out *PostgresSpec) {
 			(*in)[i].DeepCopyInto(&(*out)[i])
 		}
 	}
-	out.Clone = in.Clone
+	in.Clone.DeepCopyInto(&out.Clone)
 	if in.Databases != nil {
 		in, out := &in.Databases, &out.Databases
 		*out = make(map[string]string, len(*in))

pkg/cluster/k8sres.go

@@ -1278,6 +1278,29 @@ func (c *Cluster) generateCloneEnvironment(description *acidv1.CloneDescription)
 		result = append(result, v1.EnvVar{Name: "CLONE_METHOD", Value: "CLONE_WITH_WALE"})
 		result = append(result, v1.EnvVar{Name: "CLONE_TARGET_TIME", Value: description.EndTimestamp})
 		result = append(result, v1.EnvVar{Name: "CLONE_WAL_BUCKET_SCOPE_PREFIX", Value: ""})
+
+		if description.S3Endpoint != "" {
+		   result = append(result, v1.EnvVar{Name: "CLONE_AWS_ENDPOINT", Value: description.S3Endpoint})
+		   result = append(result, v1.EnvVar{Name: "CLONE_WALE_S3_ENDPOINT", Value: description.S3Endpoint})
+		}
+
+		if description.S3AccessKeyId != "" {
+		   result = append(result, v1.EnvVar{Name: "CLONE_AWS_ACCESS_KEY_ID", Value: description.S3AccessKeyId})
+		}
+
+		if description.S3SecretAccessKey != "" {
+		   result = append(result, v1.EnvVar{Name: "CLONE_AWS_SECRET_ACCESS_KEY", Value: description.S3SecretAccessKey})
+		}
+
+		if description.S3ForcePathStyle != nil {
+		   s3ForcePathStyle := "0"
+
+		   if *description.S3ForcePathStyle {
+			   s3ForcePathStyle = "1"
+		   }
+
+		   result = append(result, v1.EnvVar{Name: "CLONE_AWS_S3_FORCE_PATH_STYLE", Value: s3ForcePathStyle})
+		}
 	}
 
 	return result

pkg/controller/controller.go

@@ -197,25 +197,25 @@ func (c *Controller) initRoleBinding() {
 	// operator binds it to the cluster role with sufficient privileges
 	// we assume the role is created by the k8s administrator
 	if c.opConfig.PodServiceAccountRoleBindingDefinition == "" {
-		c.opConfig.PodServiceAccountRoleBindingDefinition = `
+		c.opConfig.PodServiceAccountRoleBindingDefinition = fmt.Sprintf(`
 		{
 			"apiVersion": "rbac.authorization.k8s.io/v1beta1",
 			"kind": "RoleBinding",
 			"metadata": {
-				   "name": "zalando-postgres-operator"
+				   "name": "%s"
 			},
 			"roleRef": {
 				"apiGroup": "rbac.authorization.k8s.io",
 				"kind": "ClusterRole",
-				"name": "zalando-postgres-operator"
+				"name": "%s"
 			},
 			"subjects": [
 				{
 					"kind": "ServiceAccount",
-					"name": "operator"
+					"name": "%s"
 				}
 			]
-		}`
+		}`, c.PodServiceAccount.Name, c.PodServiceAccount.Name, c.PodServiceAccount.Name)
 	}
 	c.logger.Info("Parse role bindings")
 	// re-uses k8s internal parsing. See k8s client-go issue #193 for explanation
@@ -230,9 +230,6 @@ func (c *Controller) initRoleBinding() {
 	default:
 		c.PodServiceAccountRoleBinding = obj.(*rbacv1beta1.RoleBinding)
 		c.PodServiceAccountRoleBinding.Namespace = ""
-		c.PodServiceAccountRoleBinding.ObjectMeta.Name = c.PodServiceAccount.Name
-		c.PodServiceAccountRoleBinding.RoleRef.Name = c.PodServiceAccount.Name
-		c.PodServiceAccountRoleBinding.Subjects[0].Name = c.PodServiceAccount.Name
 		c.logger.Info("successfully parsed")
 
 	}

pkg/controller/util.go

@@ -51,9 +51,7 @@ func (c *Controller) clusterWorkerID(clusterName spec.NamespacedName) uint32 {
 
 func (c *Controller) createOperatorCRD(crd *apiextv1beta1.CustomResourceDefinition) error {
 	if _, err := c.KubeClient.CustomResourceDefinitions().Create(crd); err != nil {
-		if !k8sutil.ResourceAlreadyExists(err) {
+		if k8sutil.ResourceAlreadyExists(err) {
-			return fmt.Errorf("could not create customResourceDefinition: %v", err)
-		}
 			c.logger.Infof("customResourceDefinition %q is already registered and will only be updated", crd.Name)
 
 			patch, err := json.Marshal(crd)
@@ -63,6 +61,9 @@ func (c *Controller) createOperatorCRD(crd *apiextv1beta1.CustomResourceDefiniti
 			if _, err := c.KubeClient.CustomResourceDefinitions().Patch(crd.Name, types.MergePatchType, patch); err != nil {
 				return fmt.Errorf("could not update customResourceDefinition: %v", err)
 			}
+		} else {
+			c.logger.Errorf("could not create customResourceDefinition %q: %v", crd.Name, err)
+		}
 	} else {
 		c.logger.Infof("customResourceDefinition %q has been registered", crd.Name)
 	}