Make bind address of apiserver configurable

Signed-off-by: Szilard Vincze <szilard.vincze@est.tech>

charts/postgres-operator/crds/operatorconfigurations.yaml

@@ -616,6 +616,9 @@ spec:
               logging_rest_api:
                 type: object
                 properties:
+                  api_address:
+                    type: string
+                    default: ""
                   api_port:
                     type: integer
                     default: 8080

charts/postgres-operator/values.yaml

@@ -309,6 +309,8 @@ configDebug:
 
 # parameters affecting logging and REST API listener
 configLoggingRestApi:
+  # REST API listener binds to this address
+  # api_address: ""
   # REST API listener listens to this port
   api_port: 8080
   # number of entries in the cluster history ring buffer

docs/reference/operator_parameters.md

@@ -978,6 +978,9 @@ key.
 Parameters affecting logging and REST API listener. In the CRD-based
 configuration they are grouped under the `logging_rest_api` key.
 
+* **api_address**
+  REST API listener binds to this address. The default is empty.
+
 * **api_port**
   REST API listener listens to this port. The default is `8080`.
 

manifests/configmap.yaml

@@ -7,6 +7,7 @@ data:
   # additional_pod_capabilities: "SYS_NICE"
   # additional_secret_mount: "some-secret-name"
   # additional_secret_mount_path: "/some/dir"
+  # api_address: ""
   api_port: "8080"
   aws_region: eu-central-1
   cluster_domain: cluster.local

manifests/operatorconfiguration.crd.yaml

@@ -614,6 +614,9 @@ spec:
               logging_rest_api:
                 type: object
                 properties:
+                  api_address:
+                    type: string
+                    default: ""
                   api_port:
                     type: integer
                     default: 8080

manifests/postgresql-operator-default-configuration.yaml

@@ -205,6 +205,7 @@ configuration:
       log_statement: all
     # teams_api_url: ""
   logging_rest_api:
+    # api_address: ""
     api_port: 8080
     cluster_history_entries: 1000
     ring_log_lines: 100

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

@@ -1878,6 +1878,9 @@ var OperatorConfigCRDResourceValidation = apiextv1.CustomResourceValidation{
 					"logging_rest_api": {
 						Type: "object",
 						Properties: map[string]apiextv1.JSONSchemaProps{
+							"api_address": {
+								Type: "string",
+							},
 							"api_port": {
 								Type: "integer",
 							},

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

@@ -191,9 +191,10 @@ type TeamsAPIConfiguration struct {
 
 // LoggingRESTAPIConfiguration defines Logging API conf
 type LoggingRESTAPIConfiguration struct {
-	APIPort               int `json:"api_port,omitempty"`
-	RingLogLines          int `json:"ring_log_lines,omitempty"`
-	ClusterHistoryEntries int `json:"cluster_history_entries,omitempty"`
+	APIAddress            string `json:"api_address,omitempty"`
+	APIPort               int    `json:"api_port,omitempty"`
+	RingLogLines          int    `json:"ring_log_lines,omitempty"`
+	ClusterHistoryEntries int    `json:"cluster_history_entries,omitempty"`
 }
 
 // ScalyrConfiguration defines the configuration for ScalyrAPI

pkg/apiserver/apiserver.go

@@ -4,10 +4,12 @@ import (
 	"context"
 	"encoding/json"
 	"fmt"
+	"net"
 	"net/http"
 	"net/http/pprof"
 	"regexp"
 	"strconv"
+	"strings"
 	"sync"
 	"time"
 
@@ -72,7 +74,7 @@ var (
 )
 
 // New creates new HTTP API server
-func New(controller controllerInformer, port int, logger *logrus.Logger) *Server {
+func New(controller controllerInformer, address string, port int, logger *logrus.Logger) *Server {
 	s := &Server{
 		logger:     logger.WithField("pkg", "apiserver"),
 		controller: controller,
@@ -94,7 +96,7 @@ func New(controller controllerInformer, port int, logger *logrus.Logger) *Server
 	mux.HandleFunc("/databases/", s.databases)
 
 	s.http = http.Server{
-		Addr:        fmt.Sprintf(":%d", port),
+		Addr:        net.JoinHostPort(strings.Trim(address, "[]"), strconv.Itoa(port)),
 		Handler:     http.TimeoutHandler(mux, httpAPITimeout, ""),
 		ReadTimeout: httpReadTimeout,
 	}

pkg/controller/controller.go

@@ -366,7 +366,7 @@ func (c *Controller) initController() {
 		})
 	}
 
-	c.apiserver = apiserver.New(c, c.opConfig.APIPort, c.logger.Logger)
+	c.apiserver = apiserver.New(c, c.opConfig.APIAddress, c.opConfig.APIPort, c.logger.Logger)
 }
 
 func (c *Controller) initSharedInformers() {

pkg/controller/operator_config.go

@@ -222,6 +222,7 @@ func (c *Controller) importConfigurationFromCRD(fromCRD *acidv1.OperatorConfigur
 	result.RoleDeletionSuffix = util.Coalesce(fromCRD.TeamsAPI.RoleDeletionSuffix, "_deleted")
 
 	// logging REST API config
+	result.APIAddress = util.Coalesce(fromCRD.LoggingRESTAPI.APIAddress, "")
 	result.APIPort = util.CoalesceInt(fromCRD.LoggingRESTAPI.APIPort, 8080)
 	result.RingLogLines = util.CoalesceInt(fromCRD.LoggingRESTAPI.RingLogLines, 100)
 	result.ClusterHistoryEntries = util.CoalesceInt(fromCRD.LoggingRESTAPI.ClusterHistoryEntries, 1000)

pkg/util/config/config.go

@@ -228,6 +228,7 @@ type Config struct {
 	EnableSidecars                           *bool             `name:"enable_sidecars" default:"true"`
 	SharePgSocketWithSidecars                *bool             `name:"share_pgsocket_with_sidecars" default:"false"`
 	Workers                                  uint32            `name:"workers" default:"8"`
+	APIAddress                               string            `name:"api_address" default:""`
 	APIPort                                  int               `name:"api_port" default:"8080"`
 	RingLogLines                             int               `name:"ring_log_lines" default:"100"`
 	ClusterHistoryEntries                    int               `name:"cluster_history_entries" default:"1000"`