Merge master.

Makefile

@@ -83,7 +83,7 @@ scm-source.json: .git
 
 tools:
 	GO111MODULE=on go get -u honnef.co/go/tools/cmd/staticcheck
-	GO111MODULE=on go get k8s.io/client-go@kubernetes-1.18.8
+	GO111MODULE=on go get k8s.io/client-go@kubernetes-1.19.3
 	GO111MODULE=on go mod tidy
 
 fmt:

charts/postgres-operator/crds/postgresqls.yaml

@@ -57,6 +57,7 @@ spec:
       required:
         - kind
         - apiVersion
+        - metadata
         - spec
       properties:
         kind:
@@ -67,6 +68,14 @@ spec:
           type: string
           enum:
             - acid.zalan.do/v1
+        metadata:
+          type: object
+          required:
+            - name
+          properties:
+            name:
+              type: string
+              maxLength: 53
         spec:
           type: object
           required:

docs/user.md

@@ -49,7 +49,7 @@ Note, that the name of the cluster must start with the `teamId` and `-`. At
 Zalando we use team IDs (nicknames) to lower the chance of duplicate cluster
 names and colliding entities. The team ID would also be used to query an API to
 get all members of a team and create [database roles](#teams-api-roles) for
-them.
+them. Besides, the maximum cluster name length is 53 characters.
 
 ## Watch pods being created
 

e2e/exec.sh

@@ -1,2 +1,2 @@
 #!/usr/bin/env bash
-kubectl exec -it $1 -- sh -c "$2"
+kubectl exec -i $1 -- sh -c "$2"

e2e/tests/test_e2e.py

@@ -19,6 +19,14 @@ def to_selector(labels):
     return ",".join(["=".join(l) for l in labels.items()])
 
 
+def clean_list(values):
+    # value is not stripped bytes, strip and convert to a string
+    clean = lambda v: v.strip().decode()
+    notNone = lambda v: v
+
+    return list(filter(notNone, map(clean, values)))
+
+
 class EndToEndTestCase(unittest.TestCase):
     '''
     Test interaction of the operator with multiple K8s components.
@@ -198,6 +206,58 @@ class EndToEndTestCase(unittest.TestCase):
         self.eventuallyEqual(lambda: k8s.count_running_pods("connection-pooler=acid-minimal-cluster-pooler"), 0, "Pooler pods not scaled down")
         self.eventuallyEqual(lambda: k8s.count_services_with_label('application=db-connection-pooler,cluster-name=acid-minimal-cluster'), 0, "Pooler service not removed")
 
+        # Verify that all the databases have pooler schema installed.
+        # Do this via psql, since otherwise we need to deal with
+        # credentials.
+        dbList = []
+
+        leader = k8s.get_cluster_leader_pod('acid-minimal-cluster')
+        dbListQuery = "select datname from pg_database"
+        schemasQuery = """
+            select schema_name
+            from information_schema.schemata
+            where schema_name = 'pooler'
+        """
+        exec_query = r"psql -tAq -c \"{}\" -d {}"
+
+        if leader:
+            try:
+                q = exec_query.format(dbListQuery, "postgres")
+                q = "su postgres -c \"{}\"".format(q)
+                print('Get databases: {}'.format(q))
+                result = k8s.exec_with_kubectl(leader.metadata.name, q)
+                dbList = clean_list(result.stdout.split(b'\n'))
+                print('dbList: {}, stdout: {}, stderr {}'.format(
+                    dbList, result.stdout, result.stderr
+                ))
+            except Exception as ex:
+                print('Could not get databases: {}'.format(ex))
+                print('Stdout: {}'.format(result.stdout))
+                print('Stderr: {}'.format(result.stderr))
+
+            for db in dbList:
+                if db in ('template0', 'template1'):
+                    continue
+
+                schemas = []
+                try:
+                    q = exec_query.format(schemasQuery, db)
+                    q = "su postgres -c \"{}\"".format(q)
+                    print('Get schemas: {}'.format(q))
+                    result = k8s.exec_with_kubectl(leader.metadata.name, q)
+                    schemas = clean_list(result.stdout.split(b'\n'))
+                    print('schemas: {}, stdout: {}, stderr {}'.format(
+                        schemas, result.stdout, result.stderr
+                    ))
+                except Exception as ex:
+                    print('Could not get databases: {}'.format(ex))
+                    print('Stdout: {}'.format(result.stdout))
+                    print('Stderr: {}'.format(result.stderr))
+
+                self.assertNotEqual(len(schemas), 0)
+        else:
+            print('Could not find leader pod')
+
         # remove config section to make test work next time
         k8s.api.custom_objects_api.patch_namespaced_custom_object(
             'acid.zalan.do', 'v1', 'default',

go.mod

@@ -3,18 +3,18 @@ module github.com/zalando/postgres-operator
 go 1.14
 
 require (
-	github.com/aws/aws-sdk-go v1.34.10
+	github.com/aws/aws-sdk-go v1.35.15
 	github.com/lib/pq v1.8.0
 	github.com/motomux/pretty v0.0.0-20161209205251-b2aad2c9a95d
 	github.com/r3labs/diff v1.1.0
-	github.com/sirupsen/logrus v1.6.0
+	github.com/sirupsen/logrus v1.7.0
 	github.com/stretchr/testify v1.5.1
 	golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9
-	golang.org/x/tools v0.0.0-20200928201943-a0ef9b62deab // indirect
+	golang.org/x/tools v0.0.0-20201026223136-e84cfc6dd5ca // indirect
 	gopkg.in/yaml.v2 v2.2.8
-	k8s.io/api v0.18.8
+	k8s.io/api v0.19.3
-	k8s.io/apiextensions-apiserver v0.18.0
+	k8s.io/apiextensions-apiserver v0.19.3
-	k8s.io/apimachinery v0.18.8
+	k8s.io/apimachinery v0.19.3
-	k8s.io/client-go v0.18.8
+	k8s.io/client-go v0.19.3
-	k8s.io/code-generator v0.18.8
+	k8s.io/code-generator v0.19.3
 )

go.sum

@@ -1,17 +1,33 @@
 cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
 cloud.google.com/go v0.34.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
 cloud.google.com/go v0.38.0/go.mod h1:990N+gfupTy94rShfmMCWGDn0LpTmnzTp2qbd1dvSRU=
+cloud.google.com/go v0.44.1/go.mod h1:iSa0KzasP4Uvy3f1mN/7PiObzGgflwredwwASm/v6AU=
+cloud.google.com/go v0.44.2/go.mod h1:60680Gw3Yr4ikxnPRS/oxxkBccT6SA1yMk63TGekxKY=
+cloud.google.com/go v0.45.1/go.mod h1:RpBamKRgapWJb87xiFSdk4g1CME7QZg3uwTez+TSTjc=
+cloud.google.com/go v0.46.3/go.mod h1:a6bKKbmY7er1mI7TEI4lsAkts/mkhTSZK8w33B4RAg0=
+cloud.google.com/go v0.51.0/go.mod h1:hWtGJ6gnXH+KgDv+V0zFGDvpi07n3z8ZNj3T1RW0Gcw=
+cloud.google.com/go/bigquery v1.0.1/go.mod h1:i/xbL2UlR5RvWAURpBYZTtm/cXjCha9lbfbpx4poX+o=
+cloud.google.com/go/datastore v1.0.0/go.mod h1:LXYbyblFSglQ5pkeyhO+Qmw7ukd3C+pD7TKLgZqpHYE=
+cloud.google.com/go/pubsub v1.0.1/go.mod h1:R0Gpsv3s54REJCy4fxDixWD93lHJMoZTyQ2kNxGRt3I=
+cloud.google.com/go/storage v1.0.0/go.mod h1:IhtSnM/ZTZV8YYJWCY8RULGVqBDmpoyjwiyrjsg+URw=
+dmitri.shuralyov.com/gpu/mtl v0.0.0-20190408044501-666a987793e9/go.mod h1:H6x//7gZCb22OMCxBHrMx7a5I7Hp++hsVxbQ4BYO7hU=
 github.com/Azure/go-ansiterm v0.0.0-20170929234023-d6e3b3328b78/go.mod h1:LmzpDX56iTiv29bbRTIsUNlaFfuhWRQBWjQdVyAevI8=
 github.com/Azure/go-autorest/autorest v0.9.0/go.mod h1:xyHB1BMZT0cuDHU7I0+g046+BFDTQ8rEZB0s4Yfa6bI=
+github.com/Azure/go-autorest/autorest v0.9.6/go.mod h1:/FALq9T/kS7b5J5qsQ+RSTUdAmGFqi0vUdVNNx8q630=
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+github.com/Azure/go-autorest/autorest/adal v0.8.2/go.mod h1:ZjhuQClTqx435SRJ2iMlOxPYt3d2C/T/7TiQCVZSn3Q=
 github.com/Azure/go-autorest/autorest/date v0.1.0/go.mod h1:plvfp3oPSKwf2DNjlBjWF/7vwR+cUD/ELuzDCXwHUVA=
+github.com/Azure/go-autorest/autorest/date v0.2.0/go.mod h1:vcORJHLJEh643/Ioh9+vPmf1Ij9AEBM5FuBIXLmIy0g=
 github.com/Azure/go-autorest/autorest/mocks v0.1.0/go.mod h1:OTyCOPRA2IgIlWxVYxBee2F5Gr4kF2zd2J5cFRaIDN0=
 github.com/Azure/go-autorest/autorest/mocks v0.2.0/go.mod h1:OTyCOPRA2IgIlWxVYxBee2F5Gr4kF2zd2J5cFRaIDN0=
+github.com/Azure/go-autorest/autorest/mocks v0.3.0/go.mod h1:a8FDP3DYzQ4RYfVAxAN3SVSiiO77gL2j2ronKKP0syM=
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 github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
+github.com/BurntSushi/xgb v0.0.0-20160522181843-27f122750802/go.mod h1:IVnqGOEym/WlBOVXweHU+Q+/VP0lqqI8lqeDx9IjBqo=
 github.com/NYTimes/gziphandler v0.0.0-20170623195520-56545f4a5d46/go.mod h1:3wb06e3pkSAbeQ52E9H9iFoQsEEwGN64994WTCIhntQ=
+github.com/OneOfOne/xxhash v1.2.2/go.mod h1:HSdplMjZKSmBqAxg5vPj2TmRDmfkzw+cTzAElWljhcU=
 github.com/PuerkitoBio/purell v1.0.0/go.mod h1:c11w/QuzBsJSee3cPx9rAFu61PvFxuPbtSwDGJws/X0=
 github.com/PuerkitoBio/purell v1.1.0/go.mod h1:c11w/QuzBsJSee3cPx9rAFu61PvFxuPbtSwDGJws/X0=
 github.com/PuerkitoBio/purell v1.1.1 h1:WEQqlqaGbrPkxLJWfBwQmfEAE1Z7ONdDLqrN38tNFfI=
@@ -21,40 +37,49 @@ github.com/PuerkitoBio/urlesc v0.0.0-20170810143723-de5bf2ad4578 h1:d+Bc7a5rLufV
 github.com/PuerkitoBio/urlesc v0.0.0-20170810143723-de5bf2ad4578/go.mod h1:uGdkoq3SwY9Y+13GIhn11/XLaGBb4BfwItxLd5jeuXE=
 github.com/agnivade/levenshtein v1.0.1/go.mod h1:CURSv5d9Uaml+FovSIICkLbAUZ9S4RqaHDIsdSBg7lM=
 github.com/alecthomas/template v0.0.0-20160405071501-a0175ee3bccc/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc=
+github.com/alecthomas/template v0.0.0-20190718012654-fb15b899a751/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc=
 github.com/alecthomas/units v0.0.0-20151022065526-2efee857e7cf/go.mod h1:ybxpYRFXyAe+OPACYpWeL0wqObRcbAqCMya13uyzqw0=
+github.com/alecthomas/units v0.0.0-20190717042225-c3de453c63f4/go.mod h1:ybxpYRFXyAe+OPACYpWeL0wqObRcbAqCMya13uyzqw0=
 github.com/andreyvit/diff v0.0.0-20170406064948-c7f18ee00883/go.mod h1:rCTlJbsFo29Kk6CurOXKm700vrz8f0KW0JNfpkRJY/8=
 github.com/armon/consul-api v0.0.0-20180202201655-eb2c6b5be1b6/go.mod h1:grANhF5doyWs3UAsr3K4I6qtAmlQcZDesFNEHPZAzj8=
 github.com/asaskevich/govalidator v0.0.0-20180720115003-f9ffefc3facf/go.mod h1:lB+ZfQJz7igIIfQNfa7Ml4HSf2uFQQRzpGGRXenZAgY=
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-github.com/aws/aws-sdk-go v1.34.10 h1:VU78gcf/3wA4HNEDCHidK738l7K0Bals4SJnfnvXOtY=
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 github.com/docker/spdystream v0.0.0-20160310174837-449fdfce4d96 h1:cenwrSVm+Z7QLSV/BsnenAOcDXdX4cMv4wP0B/5QbPg=
 github.com/docker/spdystream v0.0.0-20160310174837-449fdfce4d96/go.mod h1:Qh8CwZgvJUkLughtfhJv5dyTYa91l1fOUCrgjqmcifM=
+github.com/docopt/docopt-go v0.0.0-20180111231733-ee0de3bc6815/go.mod h1:WwZ+bS3ebgob9U8Nd0kOddGdZWjyMGR8Wziv+TBNwSE=
 github.com/dustin/go-humanize v0.0.0-20171111073723-bb3d318650d4/go.mod h1:HtrtbFcZ19U5GC7JDqmcUSB87Iq5E25KnS6fMYU6eOk=
 github.com/dustin/go-humanize v1.0.0/go.mod h1:HtrtbFcZ19U5GC7JDqmcUSB87Iq5E25KnS6fMYU6eOk=
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@@ -64,19 +89,24 @@ github.com/emicklei/go-restful v2.9.5+incompatible h1:spTtZBk5DYEvbxMVutUuTyh1Ao
 github.com/emicklei/go-restful v2.9.5+incompatible/go.mod h1:otzb+WCGbkyDHkqmQmT5YD2WR4BBwUdeQoFo8l/7tVs=
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 github.com/envoyproxy/protoc-gen-validate v0.1.0/go.mod h1:iSmxcyjqTsJpI2R4NaDN7+kN2VEUnK/pcBlmesArF7c=
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-k8s.io/gengo v0.0.0-20200114144118-36b2048a9120 h1:RPscN6KhmG54S33L+lr3GS+oD1jmchIU0ll519K6FA4=
+k8s.io/gengo v0.0.0-20200428234225-8167cfdcfc14/go.mod h1:ezvh/TsK7cY6rbqRK0oQQ8IAqLxYwwyPxAX1Pzy0ii0=
-k8s.io/gengo v0.0.0-20200114144118-36b2048a9120/go.mod h1:ezvh/TsK7cY6rbqRK0oQQ8IAqLxYwwyPxAX1Pzy0ii0=
+k8s.io/klog/v2 v2.0.0/go.mod h1:PBfzABfn139FHAV07az/IF9Wp1bkk3vpT2XSJ76fSDE=
-k8s.io/klog v0.0.0-20181102134211-b9b56d5dfc92/go.mod h1:Gq+BEi5rUBO/HRz0bTSXDUcqjScdoY3a9IHpCEIOOfk=
+k8s.io/klog/v2 v2.2.0 h1:XRvcwJozkgZ1UQJmfMGpvRthQHOvihEhYtDfAaxMz/A=
-k8s.io/klog v0.3.0/go.mod h1:Gq+BEi5rUBO/HRz0bTSXDUcqjScdoY3a9IHpCEIOOfk=
+k8s.io/klog/v2 v2.2.0/go.mod h1:Od+F08eJP+W3HUb4pSrPpgp9DGU4GzlpG/TmITuYh/Y=
-k8s.io/klog v1.0.0 h1:Pt+yjF5aB1xDSVbau4VsWe+dQNzA0qv1LlXdC2dF6Q8=
+k8s.io/kube-openapi v0.0.0-20200805222855-6aeccd4b50c6 h1:+WnxoVtG8TMiudHBSEtrVL1egv36TkkJm+bA8AxicmQ=
-k8s.io/klog v1.0.0/go.mod h1:4Bi6QPql/J/LkTDqv7R/cd3hPo4k2DG6Ptcz060Ez5I=
+k8s.io/kube-openapi v0.0.0-20200805222855-6aeccd4b50c6/go.mod h1:UuqjUnNftUyPE5H64/qeyjQoUZhGpeFDVdxjTeEVN2o=
-k8s.io/kube-openapi v0.0.0-20200121204235-bf4fb3bd569c/go.mod h1:GRQhZsXIAJ1xR0C9bd8UpWHZ5plfAS9fzPjJuQ6JL3E=
+k8s.io/utils v0.0.0-20200729134348-d5654de09c73 h1:uJmqzgNWG7XyClnU/mLPBWwfKKF1K8Hf8whTseBgJcg=
-k8s.io/kube-openapi v0.0.0-20200410145947-61e04a5be9a6 h1:Oh3Mzx5pJ+yIumsAD0MOECPVeXsVot0UkiaCGVyfGQY=
+k8s.io/utils v0.0.0-20200729134348-d5654de09c73/go.mod h1:jPW/WVKK9YHAvNhRxK0md/EJ228hCsBRufyofKtW8HA=
-k8s.io/kube-openapi v0.0.0-20200410145947-61e04a5be9a6/go.mod h1:GRQhZsXIAJ1xR0C9bd8UpWHZ5plfAS9fzPjJuQ6JL3E=
+rsc.io/binaryregexp v0.2.0/go.mod h1:qTv7/COck+e2FymRvadv62gMdZztPaShugOCi3I+8D8=
-k8s.io/utils v0.0.0-20200324210504-a9aa75ae1b89 h1:d4vVOjXm687F1iLSP2q3lyPPuyvTUt3aVoBpi2DqRsU=
+sigs.k8s.io/apiserver-network-proxy/konnectivity-client v0.0.9/go.mod h1:dzAXnQbTRyDlZPJX2SUPEqvnB+j7AJjtlox7PEwigU0=
-k8s.io/utils v0.0.0-20200324210504-a9aa75ae1b89/go.mod h1:sZAwmy6armz5eXlNoLmJcl4F1QuKu7sr+mFQ0byX7Ew=
+sigs.k8s.io/structured-merge-diff/v4 v4.0.1 h1:YXTMot5Qz/X1iBRJhAt+vI+HVttY0WkSqqhKxQ0xVbA=
-sigs.k8s.io/apiserver-network-proxy/konnectivity-client v0.0.7/go.mod h1:PHgbrJT7lCHcxMU+mDHEm+nx46H4zuuHZkDP6icnhu0=
+sigs.k8s.io/structured-merge-diff/v4 v4.0.1/go.mod h1:bJZC9H9iH24zzfZ/41RGcq60oK1F7G282QMXDPYydCw=
-sigs.k8s.io/structured-merge-diff/v3 v3.0.0-20200116222232-67a7b8c61874/go.mod h1:PlARxl6Hbt/+BC80dRLi1qAmnMqwqDg62YvvVkZjemw=
-sigs.k8s.io/structured-merge-diff/v3 v3.0.0 h1:dOmIZBMfhcHS09XZkMyUgkq5trg3/jRyJYFZUiaOp8E=
-sigs.k8s.io/structured-merge-diff/v3 v3.0.0/go.mod h1:PlARxl6Hbt/+BC80dRLi1qAmnMqwqDg62YvvVkZjemw=
 sigs.k8s.io/yaml v1.1.0/go.mod h1:UJmg0vDUVViEyp3mgSv9WPwZCDxu4rQW1olrI1uml+o=
 sigs.k8s.io/yaml v1.2.0 h1:kr/MCeFWJWTwyaHoR9c8EjH9OumOmoF9YGiZd7lFm/Q=
 sigs.k8s.io/yaml v1.2.0/go.mod h1:yfXDCHCao9+ENCvLSE62v9VSji2MKu5jeNfTrofGhJc=

manifests/postgresql.crd.yaml

@@ -53,6 +53,7 @@ spec:
       required:
         - kind
         - apiVersion
+        - metadata
         - spec
       properties:
         kind:
@@ -63,6 +64,14 @@ spec:
           type: string
           enum:
             - acid.zalan.do/v1
+        metadata:
+          type: object
+          required:
+            - name
+          properties:
+            name:
+              type: string
+              maxLength: 53
         spec:
           type: object
           required:

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

@@ -107,12 +107,13 @@ var min0 = 0.0
 var min1 = 1.0
 var min2 = 2.0
 var minDisable = -1.0
+var maxLength = int64(53)
 
 // PostgresCRDResourceValidation to check applied manifest parameters
 var PostgresCRDResourceValidation = apiextv1beta1.CustomResourceValidation{
 	OpenAPIV3Schema: &apiextv1beta1.JSONSchemaProps{
 		Type:     "object",
-		Required: []string{"kind", "apiVersion", "spec"},
+		Required: []string{"kind", "apiVersion", "metadata", "spec"},
 		Properties: map[string]apiextv1beta1.JSONSchemaProps{
 			"kind": {
 				Type: "string",
@@ -130,6 +131,16 @@ var PostgresCRDResourceValidation = apiextv1beta1.CustomResourceValidation{
 					},
 				},
 			},
+			"metadata": {
+				Type:     "object",
+				Required: []string{"name"},
+				Properties: map[string]apiextv1beta1.JSONSchemaProps{
+					"name": {
+						Type:      "string",
+						MaxLength: &maxLength,
+					},
+				},
+			},
 			"spec": {
 				Type:     "object",
 				Required: []string{"numberOfInstances", "teamId", "postgresql", "volume"},

pkg/cluster/cluster.go

@@ -780,7 +780,13 @@ func (c *Cluster) Update(oldSpec, newSpec *acidv1.Postgresql) error {
 		}
 	}
 
-	// sync connection pooler
+	// Sync connection pooler. Before actually doing sync reset lookup
+	// installation flag, since manifest updates could add another db which we
+	// need to process. In the future we may want to do this more careful and
+	// check which databases we need to process, but even repeating the whole
+	// installation process should be good enough.
+	c.ConnectionPooler.LookupFunction = false
+
 	if _, err := c.syncConnectionPooler(oldSpec, newSpec,
 		c.installLookupFunction); err != nil {
 		c.logger.Errorf("could not sync connection pooler: %v", err)

pkg/cluster/database.go

@@ -101,15 +101,20 @@ func (c *Cluster) databaseAccessDisabled() bool {
 }
 
 func (c *Cluster) initDbConn() error {
-	return c.initDbConnWithName("")
-}
-
-func (c *Cluster) initDbConnWithName(dbname string) error {
-	c.setProcessName("initializing db connection")
 	if c.pgDb != nil {
 		return nil
 	}
 
+	return c.initDbConnWithName("")
+}
+
+// Worker function for connection initialization. This function does not check
+// if the connection is already open, if it is then it will be overwritten.
+// Callers need to make sure no connection is open, otherwise we could leak
+// connections
+func (c *Cluster) initDbConnWithName(dbname string) error {
+	c.setProcessName("initializing db connection")
+
 	var conn *sql.DB
 	connstring := c.pgConnectionString(dbname)
 
@@ -145,6 +150,12 @@ func (c *Cluster) initDbConnWithName(dbname string) error {
 	conn.SetMaxOpenConns(1)
 	conn.SetMaxIdleConns(-1)
 
+	if c.pgDb != nil {
+		msg := "Closing an existing connection before opening a new one to %s"
+		c.logger.Warningf(msg, dbname)
+		c.closeDbConn()
+	}
+
 	c.pgDb = conn
 
 	return nil
@@ -465,8 +476,11 @@ func (c *Cluster) execCreateOrAlterExtension(extName, schemaName, statement, doi
 // perform remote authentification.
 func (c *Cluster) installLookupFunction(poolerSchema, poolerUser string) error {
 	var stmtBytes bytes.Buffer
+
 	c.logger.Info("Installing lookup function")
 
+	// Open a new connection if not yet done. This connection will be used only
+	// to get the list of databases, not for the actuall installation.
 	if err := c.initDbConn(); err != nil {
 		return fmt.Errorf("could not init database connection")
 	}
@@ -480,37 +494,41 @@ func (c *Cluster) installLookupFunction(poolerSchema, poolerUser string) error {
 		}
 	}()
 
+	// List of databases we failed to process. At the moment it function just
+	// like a flag to retry on the next sync, but in the future we may want to
+	// retry only necessary parts, so let's keep the list.
+	failedDatabases := []string{}
 	currentDatabases, err := c.getDatabases()
 	if err != nil {
 		msg := "could not get databases to install pooler lookup function: %v"
 		return fmt.Errorf(msg, err)
 	}
 
+	// We've got the list of target databases, now close this connection to
+	// open a new one to every each of them.
+	if err := c.closeDbConn(); err != nil {
+		c.logger.Errorf("could not close database connection: %v", err)
+	}
+
 	templater := template.Must(template.New("sql").Parse(connectionPoolerLookup))
+	params := TemplateParams{
+		"pooler_schema": poolerSchema,
+		"pooler_user":   poolerUser,
+	}
+
+	if err := templater.Execute(&stmtBytes, params); err != nil {
+		msg := "could not prepare sql statement %+v: %v"
+		return fmt.Errorf(msg, params, err)
+	}
 
 	for dbname := range currentDatabases {
+
 		if dbname == "template0" || dbname == "template1" {
 			continue
 		}
 
-		if err := c.initDbConnWithName(dbname); err != nil {
-			return fmt.Errorf("could not init database connection to %s", dbname)
-		}
-
 		c.logger.Infof("Install pooler lookup function into %s", dbname)
 
-		params := TemplateParams{
-			"pooler_schema": poolerSchema,
-			"pooler_user":   poolerUser,
-		}
-
-		if err := templater.Execute(&stmtBytes, params); err != nil {
-			c.logger.Errorf("could not prepare sql statement %+v: %v",
-				params, err)
-			// process other databases
-			continue
-		}
-
 		// golang sql will do retries couple of times if pq driver reports
 		// connections issues (driver.ErrBadConn), but since our query is
 		// idempotent, we can retry in a view of other errors (e.g. due to
@@ -520,7 +538,20 @@ func (c *Cluster) installLookupFunction(poolerSchema, poolerUser string) error {
 			constants.PostgresConnectTimeout,
 			constants.PostgresConnectRetryTimeout,
 			func() (bool, error) {
-				if _, err := c.pgDb.Exec(stmtBytes.String()); err != nil {
+
+				// At this moment we are not connected to any database
+				if err := c.initDbConnWithName(dbname); err != nil {
+					msg := "could not init database connection to %s"
+					return false, fmt.Errorf(msg, dbname)
+				}
+				defer func() {
+					if err := c.closeDbConn(); err != nil {
+						msg := "could not close database connection: %v"
+						c.logger.Errorf(msg, err)
+					}
+				}()
+
+				if _, err = c.pgDb.Exec(stmtBytes.String()); err != nil {
 					msg := fmt.Errorf("could not execute sql statement %s: %v",
 						stmtBytes.String(), err)
 					return false, msg
@@ -533,15 +564,16 @@ func (c *Cluster) installLookupFunction(poolerSchema, poolerUser string) error {
 			c.logger.Errorf("could not execute after retries %s: %v",
 				stmtBytes.String(), err)
 			// process other databases
+			failedDatabases = append(failedDatabases, dbname)
 			continue
 		}
 
 		c.logger.Infof("pooler lookup function installed into %s", dbname)
-		if err := c.closeDbConn(); err != nil {
-			c.logger.Errorf("could not close database connection: %v", err)
-		}
 	}
 
-	c.ConnectionPooler.LookupFunction = true
+	if len(failedDatabases) == 0 {
+		c.ConnectionPooler.LookupFunction = true
+	}
+
 	return nil
 }

pkg/cluster/k8sres.go

@@ -841,7 +841,7 @@ func (c *Cluster) getPodEnvironmentSecretVariables() ([]v1.EnvVar, error) {
 		return secretPodEnvVarsList, nil
 	}
 
-	secret, err := c.KubeClient.Secrets(c.OpConfig.PodEnvironmentSecret).Get(
+	secret, err := c.KubeClient.Secrets(c.Namespace).Get(
 		context.TODO(),
 		c.OpConfig.PodEnvironmentSecret,
 		metav1.GetOptions{})

pkg/cluster/sync.go

@@ -847,7 +847,9 @@ func (c *Cluster) syncConnectionPooler(oldSpec,
 	var err error
 
 	if c.ConnectionPooler == nil {
-		c.ConnectionPooler = &ConnectionPoolerObjects{}
+		c.ConnectionPooler = &ConnectionPoolerObjects{
+			LookupFunction: false,
+		}
 	}
 
 	newNeedConnectionPooler := c.needConnectionPoolerWorker(&newSpec.Spec)
@@ -885,6 +887,11 @@ func (c *Cluster) syncConnectionPooler(oldSpec,
 			if err = lookup(schema, user); err != nil {
 				return NoSync, err
 			}
+		} else {
+			// Lookup function installation seems to be a fragile point, so
+			// let's log for debugging if we skip it
+			msg := "Skip lookup function installation, old: %d, already installed %d"
+			c.logger.Debug(msg, oldNeedConnectionPooler, c.ConnectionPooler.LookupFunction)
 		}
 
 		if reason, err = c.syncConnectionPoolerWorker(oldSpec, newSpec); err != nil {

pkg/controller/controller.go

@@ -324,7 +324,6 @@ func (c *Controller) initController() {
 		c.logger.Fatalf("could not register Postgres CustomResourceDefinition: %v", err)
 	}
 
-	c.initPodServiceAccount()
 	c.initSharedInformers()
 
 	if c.opConfig.DebugLogging {

pkg/generated/clientset/versioned/fake/register.go

@@ -35,7 +35,7 @@ import (
 
 var scheme = runtime.NewScheme()
 var codecs = serializer.NewCodecFactory(scheme)
-var parameterCodec = runtime.NewParameterCodec(scheme)
+
 var localSchemeBuilder = runtime.SchemeBuilder{
 	acidv1.AddToScheme,
 }

pkg/generated/listers/acid.zalan.do/v1/postgresql.go

@@ -32,8 +32,10 @@ import (
 )
 
 // PostgresqlLister helps list Postgresqls.
+// All objects returned here must be treated as read-only.
 type PostgresqlLister interface {
 	// List lists all Postgresqls in the indexer.
+	// Objects returned here must be treated as read-only.
 	List(selector labels.Selector) (ret []*v1.Postgresql, err error)
 	// Postgresqls returns an object that can list and get Postgresqls.
 	Postgresqls(namespace string) PostgresqlNamespaceLister
@@ -64,10 +66,13 @@ func (s *postgresqlLister) Postgresqls(namespace string) PostgresqlNamespaceList
 }
 
 // PostgresqlNamespaceLister helps list and get Postgresqls.
+// All objects returned here must be treated as read-only.
 type PostgresqlNamespaceLister interface {
 	// List lists all Postgresqls in the indexer for a given namespace.
+	// Objects returned here must be treated as read-only.
 	List(selector labels.Selector) (ret []*v1.Postgresql, err error)
 	// Get retrieves the Postgresql from the indexer for a given namespace and name.
+	// Objects returned here must be treated as read-only.
 	Get(name string) (*v1.Postgresql, error)
 	PostgresqlNamespaceListerExpansion
 }