don't be too hard to 9.5

charts/postgres-operator/crds/postgresqls.yaml

@@ -362,6 +362,7 @@ spec:
                   version:
                     type: string
                     enum:
+                      - "9.5"
                       - "9.6"
                       - "10"
                       - "11"

manifests/postgresql.crd.yaml

@@ -358,6 +358,7 @@ spec:
                   version:
                     type: string
                     enum:
+                      - "9.5"
                       - "9.6"
                       - "10"
                       - "11"

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

@@ -504,6 +504,9 @@ var PostgresCRDResourceValidation = apiextv1.CustomResourceValidation{
 							"version": {
 								Type: "string",
 								Enum: []apiextv1.JSON{
+									{
+										Raw: []byte(`"9.5"`),
+									},
 									{
 										Raw: []byte(`"9.6"`),
 									},

pkg/cluster/majorversionupgrade.go

@@ -9,6 +9,7 @@ import (
 
 // VersionMap Map of version numbers
 var VersionMap = map[string]int{
+	"9.5": 90500,
 	"9.6": 90600,
 	"10":  100000,
 	"11":  110000,
@@ -33,7 +34,7 @@ func (c *Cluster) GetDesiredMajorVersionAsInt() int {
 func (c *Cluster) GetDesiredMajorVersion() string {
 
 	if c.Config.OpConfig.MajorVersionUpgradeMode == "full" {
-		// current is 9.6, minimal is 11 allowing 11 to 14 clusters, everything below is upgraded
+		// e.g. current is 9.6, minimal is 11 allowing 11 to 14 clusters, everything below is upgraded
 		if IsBiggerPostgresVersion(c.Spec.PgVersion, c.Config.OpConfig.MinimalMajorVersion) {
 			c.logger.Infof("overwriting configured major version %s to %s", c.Spec.PgVersion, c.Config.OpConfig.TargetMajorVersion)
 			return c.Config.OpConfig.TargetMajorVersion

ui/operator_ui/spiloutils.py

@@ -308,7 +308,7 @@ def read_versions(
         if uid == 'wal' or defaulting(lambda: UUID(uid))
     ]
 
-BACKUP_VERSION_PREFIXES = ['', '9.6/', '10/', '11/', '12/', '13/', '14/']
+BACKUP_VERSION_PREFIXES = ['', '9.5/', '9.6/', '10/', '11/', '12/', '13/', '14/']
 
 def read_basebackups(
     pg_cluster,