support starting tidb-server with -advertise-address parameter (#1859…

…) (#1868) * start tidb-server with * add EnableAdvertiseAddress switch * fix indent * address comments Co-authored-by: Louis <liuzhi@pingcap.com>
pingcap · Mar 5, 2020 · be5c05b · be5c05b
1 parent bf883e2
commit be5c05b
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Showing 9 changed files with 88 additions and 15 deletions.
diff --git a/charts/tidb-cluster/templates/scripts/_start_tidb.sh.tpl b/charts/tidb-cluster/templates/scripts/_start_tidb.sh.tpl
@@ -26,7 +26,12 @@ then
     tail -f /dev/null
 fi
 
+# Use HOSTNAME if POD_NAME is unset for backward compatibility.
+POD_NAME=${POD_NAME:-$HOSTNAME}
 ARGS="--store=tikv \
+{{- if .Values.tidb.enableAdvertiseAddress | default false }}
+--advertise-address=${POD_NAME}.${HEADLESS_SERVICE_NAME}.${NAMESPACE}.svc \
+{{- end }}
 --host=0.0.0.0 \
 --path=${CLUSTER_NAME}-pd:2379 \
 --config=/etc/tidb/tidb.toml

diff --git a/charts/tidb-cluster/values.yaml b/charts/tidb-cluster/values.yaml
@@ -399,6 +399,10 @@ tidb:
     # annotations:
       # cloud.google.com/load-balancer-type: Internal
   separateSlowLog: true
+
+  # Add --advertise-address to TiDB's startup parameters
+  enableAdvertiseAddress: false
+
   slowLogTailer:
     image: busybox:1.26.2
     resources:

diff --git a/manifests/crd.yaml b/manifests/crd.yaml
@@ -3782,6 +3782,10 @@ spec:
                     cluster-level updateStrategy if present Optional: Defaults to
                     cluster-level setting'
                   type: string
+                enableAdvertiseAddress:
+                  description: 'Add --advertise-address to TiDB''s startup parameters
+                    Optional: Defaults to false'
+                  type: boolean
                 hostNetwork:
                   description: 'Whether Hostnetwork of the component is enabled. Override
                     the cluster-level setting if present Optional: Defaults to cluster-level

diff --git a/pkg/apis/pingcap/v1alpha1/openapi_generated.go b/pkg/apis/pingcap/v1alpha1/openapi_generated.go
diff --git a/pkg/apis/pingcap/v1alpha1/tidbcluster.go b/pkg/apis/pingcap/v1alpha1/tidbcluster.go
@@ -22,13 +22,14 @@ import (
 
 const (
 	// defaultHelperImage is default image of helper
-	defaultHelperImage      = "busybox:1.26.2"
-	defaultTimeZone         = "UTC"
-	defaultEnableTLSCluster = false
-	defaultEnableTLSClient  = false
-	defaultExposeStatus     = true
-	defaultSeparateSlowLog  = true
-	defaultEnablePVReclaim  = false
+	defaultHelperImage                = "busybox:1.26.2"
+	defaultTimeZone                   = "UTC"
+	defaultEnableTLSCluster           = false
+	defaultEnableTLSClient            = false
+	defaultExposeStatus               = true
+	defaultSeparateSlowLog            = true
+	defaultEnablePVReclaim            = false
+	defaultEnableTiDBAdvertiseAddress = false
 )
 
 var (
@@ -342,6 +343,13 @@ func (tidb *TiDBSpec) IsTLSClientEnabled() bool {
 	return tidb.TLSClient != nil && tidb.TLSClient.Enabled
 }
 
+func (tidb *TiDBSpec) IsAdvertiseAddressEnabled() bool {
+	if tidb.EnableAdvertiseAddress == nil {
+		return defaultEnableTiDBAdvertiseAddress
+	}
+	return *tidb.EnableAdvertiseAddress
+}
+
 func (tidb *TiDBSpec) IsUserGeneratedCertificate() bool {
 	return tidb.IsTLSClientEnabled() && tidb.TLSClient.SecretName != ""
 }

diff --git a/pkg/apis/pingcap/v1alpha1/types.go b/pkg/apis/pingcap/v1alpha1/types.go
@@ -296,6 +296,11 @@ type TiDBSpec struct {
 	// +optional
 	BinlogEnabled *bool `json:"binlogEnabled,omitempty"`
 
+	// Add --advertise-address to TiDB's startup parameters
+	// Optional: Defaults to false
+	// +optional
+	EnableAdvertiseAddress *bool `json:"enableAdvertiseAddress,omitempty"`
+
 	// MaxFailoverCount limit the max replicas could be added in failover, 0 means unlimited
 	// Optional: Defaults to 0
 	// +kubebuilder:validation:Minimum=0

diff --git a/pkg/apis/pingcap/v1alpha1/zz_generated.deepcopy.go b/pkg/apis/pingcap/v1alpha1/zz_generated.deepcopy.go
diff --git a/pkg/manager/member/template.go b/pkg/manager/member/template.go
@@ -47,7 +47,12 @@ then
     tail -f /dev/null
 fi
 
+# Use HOSTNAME if POD_NAME is unset for backward compatibility.
+POD_NAME=${POD_NAME:-$HOSTNAME}
 ARGS="--store=tikv \
+{{- if .EnableAdvertiseAddress }}
+--advertise-address=${POD_NAME}.${HEADLESS_SERVICE_NAME}.${NAMESPACE}.svc \
+{{- end }}
 --host=0.0.0.0 \
 --path=${CLUSTER_NAME}-pd:2379 \
 --config=/etc/tidb/tidb.toml
@@ -74,10 +79,11 @@ exec /tidb-server ${ARGS}
 `))
 
 type TidbStartScriptModel struct {
-	ClusterName     string
-	EnablePlugin    bool
-	PluginDirectory string
-	PluginList      string
+	ClusterName            string
+	EnableAdvertiseAddress bool
+	EnablePlugin           bool
+	PluginDirectory        string
+	PluginList             string
 }
 
 func RenderTiDBStartScript(model *TidbStartScriptModel) (string, error) {

diff --git a/pkg/manager/member/tidb_member_manager.go b/pkg/manager/member/tidb_member_manager.go
@@ -456,10 +456,11 @@ func getTiDBConfigMap(tc *v1alpha1.TidbCluster) (*corev1.ConfigMap, error) {
 
 	plugins := tc.Spec.TiDB.Plugins
 	startScript, err := RenderTiDBStartScript(&TidbStartScriptModel{
-		ClusterName:     tc.Name,
-		EnablePlugin:    len(plugins) > 0,
-		PluginDirectory: "/plugins",
-		PluginList:      strings.Join(plugins, ","),
+		ClusterName:            tc.Name,
+		EnableAdvertiseAddress: tc.Spec.TiDB.IsAdvertiseAddressEnabled(),
+		EnablePlugin:           len(plugins) > 0,
+		PluginDirectory:        "/plugins",
+		PluginList:             strings.Join(plugins, ","),
 	})
 	if err != nil {
 		return nil, err
@@ -580,6 +581,7 @@ func getNewTiDBHeadlessServiceForTidbCluster(tc *v1alpha1.TidbCluster) *corev1.S
 func getNewTiDBSetForTidbCluster(tc *v1alpha1.TidbCluster, cm *corev1.ConfigMap) *apps.StatefulSet {
 	ns := tc.GetNamespace()
 	tcName := tc.GetName()
+	headlessSvcName := controller.TiDBPeerMemberName(tcName)
 	baseTiDBSpec := tc.BaseTiDBSpec()
 	instanceName := tc.GetInstanceName()
 	tidbConfigMap := controller.MemberConfigMapName(tc, v1alpha1.TiDBMemberType)
@@ -730,10 +732,37 @@ func getNewTiDBSetForTidbCluster(tc *v1alpha1.TidbCluster, cm *corev1.ConfigMap)
 		},
 	}
 
+	if tc.Spec.TiDB.IsAdvertiseAddressEnabled() {
+		advertiseEnvs := []corev1.EnvVar{
+			{
+				Name: "POD_NAME",
+				ValueFrom: &corev1.EnvVarSource{
+					FieldRef: &corev1.ObjectFieldSelector{
+						FieldPath: "metadata.name",
+					},
+				},
+			},
+			{
+				Name: "NAMESPACE",
+				ValueFrom: &corev1.EnvVarSource{
+					FieldRef: &corev1.ObjectFieldSelector{
+						FieldPath: "metadata.namespace",
+					},
+				},
+			},
+			{
+				Name:  "HEADLESS_SERVICE_NAME",
+				Value: headlessSvcName,
+			},
+		}
+		envs = append(envs, advertiseEnvs...)
+	}
+
 	scheme := corev1.URISchemeHTTP
 	if tc.IsTLSClusterEnabled() {
 		scheme = corev1.URISchemeHTTPS
 	}
+
 	containers = append(containers, corev1.Container{
 		Name:            v1alpha1.TiDBMemberType.String(),
 		Image:           tc.TiDBImage(),