Create pg users

manifests/testpostgresql.yaml

@@ -5,25 +5,31 @@ metadata:
   name: testcluster
 
 spec:
+  teamId: "50051320"
   volume:
     size: 100Gi
     storageClass: gp2
   numberOfInstances: 3
+  users: #Application/Robot users
+    jdoe:
+    - superuser
+    - createdb
+    rmiles:
+    rroe:
+  allowedSourceRanges: #Load balancer source ranges
+  - 127.0.0.1/32
+
+#Expert section
+  pamUsersSecret: human-users
   postgresql:
     version: "9.6"
     parameters:
       shared_buffers: "500MB"
       max_connections: "10"
       log_statement: "all"
-  users:
-    jdoe:
-    - superuser
-    - createdb
-    rmiles:
-    rroe:
   resources:
-    cpu: 100m
+    cpu: 10m
-    memory: 500Mi
+    memory: 20Mi
   patroni:
     initdb:
       encoding: "UTF8"

pkg/cluster/cluster.go

@@ -3,25 +3,45 @@ package cluster
 // Postgres ThirdPartyResource object i.e. Spilo
 
 import (
+	"context"
+	"database/sql"
 	"fmt"
+	"regexp"
+	"strings"
+	"sync"
 
 	"github.com/Sirupsen/logrus"
+	etcdclient "github.com/coreos/etcd/client"
 	"k8s.io/client-go/kubernetes"
 	"k8s.io/client-go/pkg/api/v1"
+	"k8s.io/client-go/pkg/labels"
 	"k8s.io/client-go/rest"
 
 	"github.bus.zalan.do/acid/postgres-operator/pkg/spec"
 	"github.bus.zalan.do/acid/postgres-operator/pkg/util"
 	"github.bus.zalan.do/acid/postgres-operator/pkg/util/constants"
+	"github.bus.zalan.do/acid/postgres-operator/pkg/util/retryutil"
 )
 
-var patroniUsers = []string{"superuser", "replication"}
+var (
+	superUsername       = "superuser"
+	replicationUsername = "replication"
+
+	alphaNumericRegexp = regexp.MustCompile("^[a-zA-Z0-9]*$")
+)
 
 //TODO: remove struct duplication
 type Config struct {
 	Namespace  string
 	KubeClient *kubernetes.Clientset //TODO: move clients to the better place?
 	RestClient *rest.RESTClient
+	EtcdClient etcdclient.KeysAPI
+}
+
+type pgUser struct {
+	name     string
+	password string
+	flags    []string
 }
 
 type Cluster struct {
@@ -30,35 +50,29 @@ type Cluster struct {
 	etcdHost    string
 	dockerImage string
 	cluster     *spec.Postgresql
-	pgUsers     []pgUser
+	pgUsers     map[string]pgUser
-}
 
-type pgUser struct {
+	pgDb        *sql.DB
-	username []byte
+	mu          sync.Mutex
-	password []byte
-	flags    []string
 }
 
 func New(cfg Config, spec *spec.Postgresql) *Cluster {
 	lg := logrus.WithField("pkg", "cluster").WithField("cluster-name", spec.Metadata.Name)
 
-	//TODO: check if image exist
-	dockerImage := fmt.Sprintf("registry.opensource.zalan.do/acid/spilo-%s", (*spec.Spec).PostgresqlParam.Version)
-
 	cluster := &Cluster{
 		config:      cfg,
 		cluster:     spec,
 		logger:      lg,
 		etcdHost:    constants.EtcdHost,
-		dockerImage: dockerImage,
+		dockerImage: constants.SpiloImage,
 	}
 	cluster.init()
 
 	return cluster
 }
 
-func (c *Cluster) labels() map[string]string {
+func (c *Cluster) labelsSet() labels.Set {
-	return map[string]string{
+	return labels.Set{
 		"application":   "spilo",
 		"spilo-cluster": (*c.cluster).Metadata.Name,
 	}
@@ -73,32 +87,181 @@ func (c *Cluster) credentialSecretName(userName string) string {
 		constants.TPRVendor)
 }
 
-func (c *Cluster) init() {
+func isValidUsername(username string) bool {
-	for _, userName := range patroniUsers {
+	return alphaNumericRegexp.MatchString(username)
-		user := pgUser{
-			username: []byte(userName),
-			password: util.RandomPasswordBytes(constants.PasswordLength),
-		}
-		c.pgUsers = append(c.pgUsers, user)
 }
 
-	for userName, userFlags := range (*c.cluster.Spec).Users {
+func validateUserFlags(userFlags []string) (flags []string, err error) {
-		user := pgUser{
+	uniqueFlags := make(map[string]bool)
-			username: []byte(userName),
+
-			password: util.RandomPasswordBytes(constants.PasswordLength),
+	for _, flag := range userFlags {
-			flags:    userFlags,
+		if !alphaNumericRegexp.MatchString(flag) {
+			err = fmt.Errorf("User flag '%s' is not alphanumeric", flag)
+			return
+		} else {
+			flag = strings.ToUpper(flag)
+			if _, ok := uniqueFlags[flag]; !ok {
+				uniqueFlags[flag] = true
 			}
-		c.pgUsers = append(c.pgUsers, user)
 		}
 	}
 
+	if _, ok := uniqueFlags["NOLOGIN"]; !ok {
+		uniqueFlags["LOGIN"] = true
+	}
+
+	flags = []string{}
+	for k := range uniqueFlags {
+		flags = append(flags, k)
+	}
+
+	return
+}
+
+func (c *Cluster) init() {
+	users := (*c.cluster.Spec).Users
+	c.pgUsers = make(map[string]pgUser, len(users)+2) // + [superuser and replication]
+
+	c.pgUsers[superUsername] = pgUser{
+		name:     superUsername,
+		password: util.RandomPassword(constants.PasswordLength),
+	}
+
+	c.pgUsers[replicationUsername] = pgUser{
+		name:     replicationUsername,
+		password: util.RandomPassword(constants.PasswordLength),
+	}
+
+	for userName, userFlags := range users {
+		if !isValidUsername(userName) {
+			c.logger.Warningf("Invalid '%s' username", userName)
+			continue
+		}
+
+		flags, err := validateUserFlags(userFlags)
+		if err != nil {
+			c.logger.Warningf("Invalid flags for user '%s': %s", userName, err)
+		}
+
+		c.pgUsers[userName] = pgUser{
+			name:     userName,
+			password: util.RandomPassword(constants.PasswordLength),
+			flags:    flags,
+		}
+	}
+}
+
+
+func (c *Cluster) waitPodsDestroy() error {
+	ls := c.labelsSet()
+
+	listOptions := v1.ListOptions{
+		LabelSelector: ls.String(),
+	}
+	return retryutil.Retry(
+		constants.ResourceCheckInterval, int(constants.ResourceCheckTimeout/constants.ResourceCheckInterval),
+		func() (bool, error) {
+			pods, err := c.config.KubeClient.Pods(c.config.Namespace).List(listOptions)
+			if err != nil {
+				return false, err
+			}
+
+			return len(pods.Items) == 0, nil
+		})
+}
+
+func (c *Cluster) waitStatefulsetReady() error {
+	return retryutil.Retry(constants.ResourceCheckInterval, int(constants.ResourceCheckTimeout/constants.ResourceCheckInterval),
+		func() (bool, error) {
+			listOptions := v1.ListOptions{
+				LabelSelector: c.labelsSet().String(),
+			}
+			ss, err := c.config.KubeClient.StatefulSets(c.config.Namespace).List(listOptions)
+			if err != nil {
+				return false, err
+			}
+
+			if len(ss.Items) != 1 {
+				return false, fmt.Errorf("StatefulSet is not found")
+			}
+
+			return *ss.Items[0].Spec.Replicas == ss.Items[0].Status.Replicas, nil
+		})
+}
+
+func (c *Cluster) waitPodLabelsReady() error {
+	ls := c.labelsSet()
+
+	listOptions := v1.ListOptions{
+		LabelSelector: ls.String(),
+	}
+	masterListOption := v1.ListOptions{
+		LabelSelector: labels.Merge(ls, labels.Set{"spilo-role": "master"}).String(),
+	}
+	replicaListOption := v1.ListOptions{
+		LabelSelector: labels.Merge(ls, labels.Set{"spilo-role": "replica"}).String(),
+	}
+	pods, err := c.config.KubeClient.Pods(c.config.Namespace).List(listOptions)
+	if err != nil {
+		return err
+	}
+	podsNumber := len(pods.Items)
+
+	return retryutil.Retry(
+		constants.ResourceCheckInterval, int(constants.ResourceCheckTimeout/constants.ResourceCheckInterval),
+		func() (bool, error) {
+			masterPods, err := c.config.KubeClient.Pods(c.config.Namespace).List(masterListOption)
+			if err != nil {
+				return false, err
+			}
+			replicaPods, err := c.config.KubeClient.Pods(c.config.Namespace).List(replicaListOption)
+			if err != nil {
+				return false, err
+			}
+			if len(masterPods.Items) > 1 {
+				return false, fmt.Errorf("Too many masters")
+			}
+
+			return len(masterPods.Items)+len(replicaPods.Items) == podsNumber, nil
+		})
+}
+
 func (c *Cluster) Create() error {
 	c.createEndPoint()
 	c.createService()
 	c.applySecrets()
 	c.createStatefulSet()
 
-	//TODO: wait for "spilo-role" label to appear on each pod
+	c.logger.Info("Waiting for cluster being ready")
+	err := c.waitClusterReady()
+	if err != nil {
+		c.logger.Errorf("Failed to create cluster: %s", err)
+		return err
+	}
+	c.logger.Info("Cluster is ready")
+
+	err = c.initDbConn()
+	if err != nil {
+		return fmt.Errorf("Failed to init db connection: %s", err)
+	}
+
+	c.createUsers()
+
+	return nil
+}
+
+func (c *Cluster) waitClusterReady() error {
+	// TODO: wait for the first Pod only
+	err := c.waitStatefulsetReady()
+	if err != nil {
+		return fmt.Errorf("Statuful set error: %s", err)
+	}
+
+	// TODO: wait only for master
+	err = c.waitPodLabelsReady()
+	if err != nil {
+		return fmt.Errorf("Pod labels error: %s", err)
+	}
 
 	return nil
 }
@@ -112,46 +275,43 @@ func (c *Cluster) Delete() error {
 	}
 
 	listOptions := v1.ListOptions{
-		LabelSelector: fmt.Sprintf("%s=%s", "spilo-cluster", clusterName),
+		LabelSelector: c.labelsSet().String(),
 	}
 
 	kubeClient := c.config.KubeClient
 
 	podList, err := kubeClient.Pods(nameSpace).List(listOptions)
 	if err != nil {
-		c.logger.Errorf("Error: %+v", err)
+		return fmt.Errorf("Can't get list of pods: %s", err)
 	}
 
 	err = kubeClient.StatefulSets(nameSpace).Delete(clusterName, deleteOptions)
 	if err != nil {
-		c.logger.Errorf("Error: %+v", err)
+		return fmt.Errorf("Can't delete statefulset: %s", err)
 	}
-	c.logger.Infof("StatefulSet %s.%s has been deleted\n", nameSpace, clusterName)
+	c.logger.Infof("StatefulSet %s.%s has been deleted", nameSpace, clusterName)
 
 	for _, pod := range podList.Items {
 		err = kubeClient.Pods(nameSpace).Delete(pod.Name, deleteOptions)
 		if err != nil {
-			c.logger.Errorf("Error while deleting Pod %s: %+v", pod.Name, err)
+			return fmt.Errorf("Error while deleting pod %s.%s: %s", pod.Name, pod.Namespace, err)
-			return err
 		}
 
-		c.logger.Infof("Pod %s.%s has been deleted\n", pod.Namespace, pod.Name)
+		c.logger.Infof("Pod %s.%s has been deleted", pod.Name, pod.Namespace)
 	}
 
 	serviceList, err := kubeClient.Services(nameSpace).List(listOptions)
 	if err != nil {
-		return err
+		return fmt.Errorf("Can't get list of the services: %s", err)
 	}
 
 	for _, service := range serviceList.Items {
 		err = kubeClient.Services(nameSpace).Delete(service.Name, deleteOptions)
 		if err != nil {
-			c.logger.Errorf("Error while deleting Service %s: %+v", service.Name, err)
+			return fmt.Errorf("Can't delete service %s.%s: %s", service.Name, service.Namespace, err)
-
-			return err
 		}
 
-		c.logger.Infof("Service %s.%s has been deleted\n", service.Namespace, service.Name)
+		c.logger.Infof("Service %s.%s has been deleted", service.Name, service.Namespace)
 	}
 
 	secretsList, err := kubeClient.Secrets(nameSpace).List(listOptions)
@@ -161,15 +321,31 @@ func (c *Cluster) Delete() error {
 	for _, secret := range secretsList.Items {
 		err = kubeClient.Secrets(nameSpace).Delete(secret.Name, deleteOptions)
 		if err != nil {
-			c.logger.Errorf("Error while deleting Secret %s: %+v", secret.Name, err)
+			return fmt.Errorf("Can't delete secret %s.%s: %s", secret.Name, secret.Namespace, err)
-
-			return err
 		}
 
-		c.logger.Infof("Secret %s.%s has been deleted\n", secret.Namespace, secret.Name)
+		c.logger.Infof("Secret %s.%s has been deleted", secret.Name, secret.Namespace)
 	}
 
-	//TODO: delete key from etcd
+	c.waitPodsDestroy()
+
+	etcdKey := fmt.Sprintf("/service/%s", clusterName)
+
+	resp, err := c.config.EtcdClient.Delete(context.Background(),
+		etcdKey,
+		&etcdclient.DeleteOptions{Recursive: true})
+
+	if err != nil {
+		return fmt.Errorf("Can't delete etcd key: %s", err)
+	}
+
+	if resp == nil {
+		c.logger.Warningf("No response from etcd cluster")
+	}
+
+	c.logger.Infof("Etcd key '%s' has been deleted", etcdKey)
+
+	//TODO: Ensure objects are deleted
 
 	return nil
 }

pkg/cluster/pg.go

@@ -0,0 +1,39 @@
+package cluster
+
+import (
+	"database/sql"
+	"fmt"
+
+	_ "github.com/lib/pq"
+	"strings"
+)
+
+func (c *Cluster) pgConnectionString() string {
+	hostname := fmt.Sprintf("%s.%s.svc.cluster.local", (*c.cluster).Metadata.Name, (*c.cluster).Metadata.Namespace)
+	password := c.pgUsers[superUsername].password
+
+	return fmt.Sprintf("host='%s' dbname=postgres sslmode=require user=postgres password='%s'",
+		hostname,
+		strings.Replace(password, "$", "\\$", -1))
+}
+
+func (c *Cluster) initDbConn() error {
+	if c.pgDb == nil {
+		c.mu.Lock()
+		defer c.mu.Unlock()
+		if c.pgDb == nil {
+			conn, err := sql.Open("postgres", c.pgConnectionString())
+			if err != nil {
+				return err
+			}
+			err = conn.Ping()
+			if err != nil {
+				return err
+			}
+
+			c.pgDb = conn
+		}
+	}
+
+	return nil
+}

pkg/cluster/resources.go

@@ -6,9 +6,24 @@ import (
 	"k8s.io/client-go/pkg/apis/apps/v1beta1"
 	"k8s.io/client-go/pkg/util/intstr"
 
+	"fmt"
+	"github.bus.zalan.do/acid/postgres-operator/pkg/util/constants"
 	"github.bus.zalan.do/acid/postgres-operator/pkg/util/k8sutil"
+	"strings"
 )
 
+var createUserSQL = `DO $$
+BEGIN
+    SET local synchronous_commit = 'local';
+    PERFORM * FROM pg_authid WHERE rolname = '%s';
+    IF FOUND THEN
+        ALTER ROLE "%s" WITH %s PASSWORD '%s';
+    ELSE
+        CREATE ROLE "%s" WITH %s PASSWORD '%s';
+    END IF;
+END;
+$$`
+
 func (c *Cluster) createStatefulSet() {
 	clusterName := (*c.cluster).Metadata.Name
 
@@ -65,6 +80,24 @@ func (c *Cluster) createStatefulSet() {
 				},
 			},
 		},
+		{
+			Name:  "PAM_OAUTH2",                                                                                 //TODO: get from the operator tpr spec
+			Value: "https://info.example.com/oauth2/tokeninfo?access_token= uid realm=/employees", //space before uid is obligatory
+		},
+		{
+			Name: "SPILO_CONFIGURATION", //TODO: get from the operator tpr spec
+			Value: fmt.Sprintf(`
+postgresql:
+  bin_dir: /usr/lib/postgresql/%s/bin
+bootstrap:
+  initdb:
+  - auth-host: md5
+  - auth-local: trust
+  pg_hba:
+  - hostnossl all all all reject
+  - hostssl   all +%s all pam
+  - hostssl   all all all md5`, (*c.cluster.Spec).Version, constants.PamRoleName),
+		},
 	}
 
 	resourceList := v1.ResourceList{}
@@ -118,7 +151,7 @@ func (c *Cluster) createStatefulSet() {
 
 	template := v1.PodTemplateSpec{
 		ObjectMeta: v1.ObjectMeta{
-			Labels:      c.labels(),
+			Labels:      c.labelsSet(),
 			Annotations: map[string]string{"pod.alpha.kubernetes.io/initialized": "true"},
 		},
 		Spec: podSpec,
@@ -127,7 +160,7 @@ func (c *Cluster) createStatefulSet() {
 	statefulSet := &v1beta1.StatefulSet{
 		ObjectMeta: v1.ObjectMeta{
 			Name:   clusterName,
-			Labels: c.labels(),
+			Labels: c.labelsSet(),
 		},
 		Spec: v1beta1.StatefulSetSpec{
 			Replicas:    &c.cluster.Spec.NumberOfInstances,
@@ -140,32 +173,46 @@ func (c *Cluster) createStatefulSet() {
 }
 
 func (c *Cluster) applySecrets() {
+	//TODO: do not override current secrets
+
 	var err error
-	for _, user := range c.pgUsers {
+	for userName, pgUser := range c.pgUsers {
 		secret := v1.Secret{
 			ObjectMeta: v1.ObjectMeta{
-				Name:   c.credentialSecretName(string(user.username)),
+				Name:   c.credentialSecretName(userName),
-				Labels: c.labels(),
+				Labels: c.labelsSet(),
 			},
 			Type: v1.SecretTypeOpaque,
 			Data: map[string][]byte{
-				"username": user.username,
+				"username": []byte(pgUser.name),
-				"password": user.password,
+				"password": []byte(pgUser.password),
 			},
 		}
 		_, err = c.config.KubeClient.Secrets(c.config.Namespace).Create(&secret)
 		if k8sutil.IsKubernetesResourceAlreadyExistError(err) {
-			_, err = c.config.KubeClient.Secrets(c.config.Namespace).Update(&secret)
+			c.logger.Infof("Skipping update of '%s'", secret.Name)
+
+			curSecrets, err := c.config.KubeClient.Secrets(c.config.Namespace).Get(c.credentialSecretName(userName))
 			if err != nil {
-				c.logger.Errorf("Error while updating secret: %+v", err)
+				c.logger.Errorf("Can't get current secret: %s", err)
-			} else {
-				c.logger.Infof("Secret updated: %+v", secret)
 			}
+			user := pgUser
+			user.password = string(curSecrets.Data["password"])
+			c.pgUsers[userName] = user
+			c.logger.Infof("Password fetched for user '%s' from the secrets", userName)
+
+			continue
+			//_, err = c.config.KubeClient.Secrets(c.config.Namespace).Update(&secret)
+			//if err != nil {
+			//	c.logger.Errorf("Error while updating secret: %+v", err)
+			//} else {
+			//	c.logger.Infof("Secret updated: %+v", secret)
+			//}
 		} else {
 			if err != nil {
 				c.logger.Errorf("Error while creating secret: %+v", err)
 			} else {
-				c.logger.Infof("Secret created: %+v", secret)
+				c.logger.Infof("Secret created: %s", secret.Name)
 			}
 		}
 	}
@@ -185,11 +232,12 @@ func (c *Cluster) createService() {
 	service := v1.Service{
 		ObjectMeta: v1.ObjectMeta{
 			Name:   clusterName,
-			Labels: c.labels(),
+			Labels: c.labelsSet(),
 		},
 		Spec: v1.ServiceSpec{
-			Type:  v1.ServiceTypeClusterIP,
+			Type:  v1.ServiceTypeLoadBalancer,
 			Ports: []v1.ServicePort{{Port: 5432, TargetPort: intstr.IntOrString{IntVal: 5432}}},
+			LoadBalancerSourceRanges: (*c.cluster).Spec.AllowedSourceRanges,
 		},
 	}
 
@@ -197,7 +245,7 @@ func (c *Cluster) createService() {
 	if err != nil {
 		c.logger.Errorf("Error while creating service: %+v", err)
 	} else {
-		c.logger.Infof("Service created: %+v", service)
+		c.logger.Infof("Service created: %s", service.Name)
 	}
 }
 
@@ -213,7 +261,7 @@ func (c *Cluster) createEndPoint() {
 	endPoint := v1.Endpoints{
 		ObjectMeta: v1.ObjectMeta{
 			Name:   clusterName,
-			Labels: c.labels(),
+			Labels: c.labelsSet(),
 		},
 	}
 
@@ -221,6 +269,43 @@ func (c *Cluster) createEndPoint() {
 	if err != nil {
 		c.logger.Errorf("Error while creating endpoint: %+v", err)
 	} else {
-		c.logger.Infof("Endpoint created: %+v", endPoint)
+		c.logger.Infof("Endpoint created: %s", endPoint.Name)
 	}
 }
+
+func (c *Cluster) createUser(user pgUser) {
+	var userType string
+	var flags []string = user.flags
+
+	if user.password == "" {
+		userType = "human"
+		flags = append(flags, fmt.Sprintf("IN ROLE '%s'", constants.PamRoleName))
+	} else {
+		userType = "app"
+	}
+
+	userFlags := strings.Join(flags, " ")
+	query := fmt.Sprintf(createUserSQL,
+		user.name,
+		user.name, userFlags, user.password,
+		user.name, userFlags, user.password)
+
+	_, err := c.pgDb.Query(query)
+	if err != nil {
+		c.logger.Errorf("Can't create %s user '%s': %s", user.name, err)
+	} else {
+		c.logger.Infof("%s user '%s' with flags %s has been created", userType, user.name, flags)
+	}
+}
+
+func (c *Cluster) createUsers() error {
+	for userName, user := range c.pgUsers {
+		if userName == superUsername || userName == replicationUsername {
+			continue
+		}
+
+		c.createUser(user)
+	}
+
+	return nil
+}

pkg/controller/controller.go

@@ -5,6 +5,7 @@ import (
 	"sync"
 
 	"github.com/Sirupsen/logrus"
+	etcdclient "github.com/coreos/etcd/client"
 	"k8s.io/client-go/kubernetes"
 	"k8s.io/client-go/pkg/api/v1"
 	v1beta1extensions "k8s.io/client-go/pkg/apis/extensions/v1beta1"
@@ -22,16 +23,18 @@ type Config struct {
 	Namespace  string
 	KubeClient *kubernetes.Clientset
 	RestClient *rest.RESTClient
+	EtcdClient etcdclient.KeysAPI
 }
 
 type Controller struct {
-	Config
+	config Config
 
 	logger      *logrus.Entry
 	events      chan *Event
 	clusters    map[string]*cluster.Cluster
 	stopChMap   map[string]chan struct{}
 	waitCluster sync.WaitGroup
+
 	postgresqlInformer cache.SharedIndexInformer
 }
 
@@ -42,10 +45,10 @@ type Event struct {
 
 func New(cfg *Config) *Controller {
 	return &Controller{
-		Config:    *cfg,
+		config:    *cfg,
 		logger:    logrus.WithField("pkg", "controller"),
 		clusters:  make(map[string]*cluster.Cluster),
-		stopChMap: map[string]chan struct{}{},
+		stopChMap: make(map[string]chan struct{}),
 	}
 }
 
@@ -54,9 +57,14 @@ func (c *Controller) Run(stopCh <-chan struct{}, wg *sync.WaitGroup) {
 	wg.Add(1)
 
 	c.initController()
+	err := c.initEtcdClient()
+	if err != nil {
+		c.logger.Errorf("Can't get etcd client: %s", err)
+
+		return
+	}
 
 	go c.watchTpr(stopCh)
-	go c.watchTprEvents(stopCh)
 
 	c.logger.Info("Started working in background")
 }
@@ -67,12 +75,6 @@ func (c *Controller) watchTpr(stopCh <-chan struct{}) {
 	<-stopCh
 }
 
-func (c *Controller) watchTprEvents(stopCh <-chan struct{}) {
-	//fmt.Println("Watching tpr events")
-
-	<-stopCh
-}
-
 func (c *Controller) createTPR() error {
 	tpr := &v1beta1extensions.ThirdPartyResource{
 		ObjectMeta: v1.ObjectMeta{
@@ -84,26 +86,29 @@ func (c *Controller) createTPR() error {
 		Description: constants.TPRDescription,
 	}
 
-	_, err := c.KubeClient.ExtensionsV1beta1().ThirdPartyResources().Create(tpr)
+	_, err := c.config.KubeClient.ExtensionsV1beta1().ThirdPartyResources().Create(tpr)
 
 	if err != nil {
 		if !k8sutil.IsKubernetesResourceAlreadyExistError(err) {
 			return err
 		} else {
-			c.logger.Info("ThirdPartyResource already registered")
+			c.logger.Info("ThirdPartyResource is already registered")
 		}
+	} else {
+		c.logger.Info("ThirdPartyResource has been registered")
 	}
 
-	restClient := c.RestClient
+	restClient := c.config.RestClient
 
-	return k8sutil.WaitTPRReady(restClient, constants.TPRReadyWaitInterval, constants.TPRReadyWaitTimeout, c.Namespace)
+	return k8sutil.WaitTPRReady(restClient, constants.TPRReadyWaitInterval, constants.TPRReadyWaitTimeout, c.config.Namespace)
 }
 
 func (c *Controller) makeClusterConfig() cluster.Config {
 	return cluster.Config{
-		Namespace:  c.Namespace,
+		Namespace:  c.config.Namespace,
-		KubeClient: c.KubeClient,
+		KubeClient: c.config.KubeClient,
-		RestClient: c.RestClient,
+		RestClient: c.config.RestClient,
+		EtcdClient: c.config.EtcdClient,
 	}
 }
 
@@ -114,7 +119,7 @@ func (c *Controller) initController() {
 	}
 
 	c.postgresqlInformer = cache.NewSharedIndexInformer(
-		cache.NewListWatchFromClient(c.RestClient, constants.ResourceName, v1.NamespaceAll, fields.Everything()),
+		cache.NewListWatchFromClient(c.config.RestClient, constants.ResourceName, v1.NamespaceAll, fields.Everything()),
 		&spec.Postgresql{},
 		constants.ResyncPeriod,
 		cache.Indexers{cache.NamespaceIndex: cache.MetaNamespaceIndexFunc})
@@ -129,14 +134,23 @@ func (c *Controller) initController() {
 func (c *Controller) clusterAdd(obj interface{}) {
 	pg := obj.(*spec.Postgresql)
 
+	//TODO: why do we need to have this check
 	if pg.Spec == nil {
 		return
 	}
 
-	cluster := cluster.New(c.makeClusterConfig(), pg)
+	clusterName := (*pg).Metadata.Name
-	cluster.Create()
 
-	c.logger.Infof("Add: %+v", cluster)
+	cl := cluster.New(c.makeClusterConfig(), pg)
+	err := cl.Create()
+	if err != nil {
+		c.logger.Errorf("Can't create cluster: %s", err)
+		return
+	}
+	c.stopChMap[clusterName] = make(chan struct{})
+	c.clusters[clusterName] = cl
+
+	c.logger.Infof("Postgresql cluster %s.%s has been created", clusterName, (*pg).Metadata.Namespace)
 }
 
 func (c *Controller) clusterUpdate(prev, cur interface{}) {
@@ -146,8 +160,11 @@ func (c *Controller) clusterUpdate(prev, cur interface{}) {
 	if pgPrev.Spec == nil || pgCur.Spec == nil {
 		return
 	}
+	if pgPrev.Metadata.ResourceVersion == pgCur.Metadata.ResourceVersion {
+		return
+	}
 
-	c.logger.Infof("Update: %+v -> %+v", *pgPrev.Spec, *pgCur.Spec)
+	c.logger.Infof("Update: %+v -> %+v", *pgPrev, *pgCur)
 }
 
 func (c *Controller) clusterDelete(obj interface{}) {
@@ -155,9 +172,17 @@ func (c *Controller) clusterDelete(obj interface{}) {
 	if pg.Spec == nil {
 		return
 	}
+	clusterName := (*pg).Metadata.Name
 
 	cluster := cluster.New(c.makeClusterConfig(), pg)
-	cluster.Delete()
+	err := cluster.Delete()
-
+	if err != nil {
-	c.logger.Infof("Delete: %+v", *pg.Spec)
+		c.logger.Errorf("Can't delete cluster '%s.%s': %s", clusterName, (*pg).Metadata.Namespace, err)
+		return
+	}
+
+	close(c.stopChMap[clusterName])
+	delete(c.clusters, clusterName)
+
+	c.logger.Infof("Cluster delete: %s", (*pg).Metadata.Name)
 }

pkg/controller/etcd.go

@@ -0,0 +1,25 @@
+package controller
+
+import (
+	"fmt"
+	"github.bus.zalan.do/acid/postgres-operator/pkg/util/constants"
+	etcdclient "github.com/coreos/etcd/client"
+	"time"
+)
+
+func (c *Controller) initEtcdClient() error {
+	etcdUrl := fmt.Sprintf("http://%s", constants.EtcdHost)
+
+	cfg, err := etcdclient.New(etcdclient.Config{
+		Endpoints:               []string{etcdUrl},
+		Transport:               etcdclient.DefaultTransport,
+		HeaderTimeoutPerRequest: time.Second,
+	})
+	if err != nil {
+		return err
+	}
+
+	c.config.EtcdClient = etcdclient.NewKeysAPI(cfg)
+
+	return nil
+}

pkg/spec/postgresql.go

@@ -50,9 +50,12 @@ type PostgresSpec struct {
 	PostgresqlParam `json:"postgresql"`
 	Volume          `json:"volume,omitempty"`
 
+	TeamId              string               `json:"teamId"`
+	AllowedSourceRanges []string             `json:"allowedSourceRanges"`
 	NumberOfInstances   int32                `json:"numberOfInstances"`
 	Users               map[string]UserFlags `json:"users"`
 	MaintenanceWindows  []string             `json:"maintenanceWindows,omitempty"`
+	PamUsersSecret      string               `json:"pamUsersSecret",omitempty`
 
 	EtcdHost    string
 	DockerImage string

pkg/util/constants/constants.go

@@ -9,11 +9,15 @@ const (
 	TPRReadyWaitInterval  = 3 * time.Second
 	TPRReadyWaitTimeout   = 30 * time.Second
 	TPRApiVersion         = "v1"
+	ResourceCheckInterval = 3 * time.Second
+	ResourceCheckTimeout  = 10 * time.Minute
 
 	ResourceName = TPRName + "s"
 	ResyncPeriod = 5 * time.Minute
 
 	EtcdHost    = "etcd-client.default.svc.cluster.local:2379" //TODO: move to the operator spec
+	SpiloImage  = "registry.opensource.zalan.do/acid/spilo-9.6:1.2-p11"
+	PamRoleName = "zalandos"
 
 	PasswordLength = 64
 )

pkg/util/util.go

@@ -5,17 +5,17 @@ import (
 	"time"
 )
 
-var passwordChars = []byte("abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789!@#$^&*=")
+var passwordChars = []byte("abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789")
 
 func init() {
 	rand.Seed(int64(time.Now().Unix()))
 }
 
-func RandomPasswordBytes(n int) []byte {
+func RandomPassword(n int) string {
 	b := make([]byte, n)
 	for i := range b {
 		b[i] = passwordChars[rand.Intn(len(passwordChars))]
 	}
 
-	return b
+	return string(b)
 }