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pd_member_manager.go
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pd_member_manager.go
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// Copyright 2018 PingCAP, Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// See the License for the specific language governing permissions and
// limitations under the License.
package member
import (
"context"
"fmt"
"path"
"regexp"
"strconv"
"strings"
"github.com/pingcap/tidb-operator/pkg/apis/label"
"github.com/pingcap/tidb-operator/pkg/apis/pingcap/v1alpha1"
"github.com/pingcap/tidb-operator/pkg/controller"
"github.com/pingcap/tidb-operator/pkg/manager"
"github.com/pingcap/tidb-operator/pkg/manager/member/constants"
"github.com/pingcap/tidb-operator/pkg/manager/member/startscript"
"github.com/pingcap/tidb-operator/pkg/manager/suspender"
mngerutils "github.com/pingcap/tidb-operator/pkg/manager/utils"
"github.com/pingcap/tidb-operator/pkg/manager/volumes"
"github.com/pingcap/tidb-operator/pkg/third_party/k8s"
"github.com/pingcap/tidb-operator/pkg/util"
"github.com/Masterminds/semver"
apps "k8s.io/api/apps/v1"
corev1 "k8s.io/api/core/v1"
"k8s.io/apimachinery/pkg/api/errors"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/types"
"k8s.io/apimachinery/pkg/util/intstr"
"k8s.io/apimachinery/pkg/util/uuid"
"k8s.io/klog/v2"
"k8s.io/utils/pointer"
)
const (
// pdClusterCertPath is where the cert for inter-cluster communication stored (if any)
pdClusterCertPath = "/var/lib/pd-tls"
tidbClientCertPath = "/var/lib/tidb-client-tls"
//find a better way to manage store only managed by pd in Operator
pdMemberLimitPattern = `%s-pd-\d+\.%s-pd-peer\.%s\.svc%s\:\d+`
)
type pdMemberManager struct {
deps *controller.Dependencies
scaler Scaler
upgrader Upgrader
failover Failover
suspender suspender.Suspender
podVolumeModifier volumes.PodVolumeModifier
}
// NewPDMemberManager returns a *pdMemberManager
func NewPDMemberManager(dependencies *controller.Dependencies, pdScaler Scaler, pdUpgrader Upgrader, pdFailover Failover, spder suspender.Suspender, pvm volumes.PodVolumeModifier) manager.Manager {
return &pdMemberManager{
deps: dependencies,
scaler: pdScaler,
upgrader: pdUpgrader,
failover: pdFailover,
suspender: spder,
podVolumeModifier: pvm,
}
}
func (m *pdMemberManager) Sync(tc *v1alpha1.TidbCluster) error {
// If pd is not specified return
if tc.Spec.PD == nil {
return nil
}
if (tc.Spec.PD.Mode == "ms" && tc.Spec.PDMS == nil) ||
(tc.Spec.PDMS != nil && tc.Spec.PD.Mode != "ms") {
klog.Infof("tidbcluster: [%s/%s]'s enable micro service failed, please check `PD.Mode` and `PDMS`", tc.GetNamespace(), tc.GetName())
}
// skip sync if pd is suspended
component := v1alpha1.PDMemberType
needSuspend, err := m.suspender.SuspendComponent(tc, component)
if err != nil {
return fmt.Errorf("suspend %s failed: %v", component, err)
}
if needSuspend {
klog.Infof("component %s for cluster %s/%s is suspended, skip syncing", component, tc.GetNamespace(), tc.GetName())
return nil
}
// Sync PD Service
if err := m.syncPDServiceForTidbCluster(tc); err != nil {
return err
}
// Sync PD Headless Service
if err := m.syncPDHeadlessServiceForTidbCluster(tc); err != nil {
return err
}
// Sync PD StatefulSet
return m.syncPDStatefulSetForTidbCluster(tc)
}
func (m *pdMemberManager) syncPDServiceForTidbCluster(tc *v1alpha1.TidbCluster) error {
if tc.Spec.Paused {
klog.V(4).Infof("tidb cluster %s/%s is paused, skip syncing for pd service", tc.GetNamespace(), tc.GetName())
return nil
}
ns := tc.GetNamespace()
tcName := tc.GetName()
newSvc := m.getNewPDServiceForTidbCluster(tc)
oldSvcTmp, err := m.deps.ServiceLister.Services(ns).Get(controller.PDMemberName(tcName))
if errors.IsNotFound(err) {
err = controller.SetServiceLastAppliedConfigAnnotation(newSvc)
if err != nil {
return err
}
return m.deps.ServiceControl.CreateService(tc, newSvc)
}
if err != nil {
return fmt.Errorf("syncPDServiceForTidbCluster: failed to get svc %s for cluster %s/%s, error: %s", controller.PDMemberName(tcName), ns, tcName, err)
}
oldSvc := oldSvcTmp.DeepCopy()
_, err = m.deps.ServiceControl.SyncComponentService(
tc,
newSvc,
oldSvc,
true)
if err != nil {
return err
}
return nil
}
func (m *pdMemberManager) syncPDHeadlessServiceForTidbCluster(tc *v1alpha1.TidbCluster) error {
if tc.Spec.Paused {
klog.V(4).Infof("tidb cluster %s/%s is paused, skip syncing for pd headless service", tc.GetNamespace(), tc.GetName())
return nil
}
ns := tc.GetNamespace()
tcName := tc.GetName()
newSvc := getNewPDHeadlessServiceForTidbCluster(tc)
oldSvcTmp, err := m.deps.ServiceLister.Services(ns).Get(controller.PDPeerMemberName(tcName))
if errors.IsNotFound(err) {
err = controller.SetServiceLastAppliedConfigAnnotation(newSvc)
if err != nil {
return err
}
return m.deps.ServiceControl.CreateService(tc, newSvc)
}
if err != nil {
return fmt.Errorf("syncPDHeadlessServiceForTidbCluster: failed to get svc %s for cluster %s/%s, error: %s", controller.PDPeerMemberName(tcName), ns, tcName, err)
}
oldSvc := oldSvcTmp.DeepCopy()
_, err = m.deps.ServiceControl.SyncComponentService(
tc,
newSvc,
oldSvc,
false)
if err != nil {
return err
}
return nil
}
func (m *pdMemberManager) syncPDStatefulSetForTidbCluster(tc *v1alpha1.TidbCluster) error {
ns := tc.GetNamespace()
tcName := tc.GetName()
oldPDSetTmp, err := m.deps.StatefulSetLister.StatefulSets(ns).Get(controller.PDMemberName(tcName))
if err != nil && !errors.IsNotFound(err) {
return fmt.Errorf("syncPDStatefulSetForTidbCluster: fail to get sts %s for cluster %s/%s, error: %s", controller.PDMemberName(tcName), ns, tcName, err)
}
setNotExist := errors.IsNotFound(err)
oldPDSet := oldPDSetTmp.DeepCopy()
if err := m.syncTidbClusterStatus(tc, oldPDSet); err != nil {
klog.Errorf("failed to sync TidbCluster: [%s/%s]'s status, error: %v", ns, tcName, err)
}
if tc.Spec.Paused {
klog.V(4).Infof("tidb cluster %s/%s is paused, skip syncing for pd statefulset", tc.GetNamespace(), tc.GetName())
return nil
}
cm, err := m.syncPDConfigMap(tc, oldPDSet)
if err != nil {
return err
}
newPDSet, err := getNewPDSetForTidbCluster(tc, cm)
if err != nil {
return err
}
if setNotExist {
err = mngerutils.SetStatefulSetLastAppliedConfigAnnotation(newPDSet)
if err != nil {
return err
}
if err := m.deps.StatefulSetControl.CreateStatefulSet(tc, newPDSet); err != nil {
return err
}
tc.Status.PD.StatefulSet = &apps.StatefulSetStatus{}
return controller.RequeueErrorf("TidbCluster: [%s/%s], waiting for PD cluster running", ns, tcName)
}
// Force update takes precedence over scaling because force upgrade won't take effect when cluster gets stuck at scaling
if !tc.Status.PD.Synced && !templateEqual(newPDSet, oldPDSet) {
// upgrade forced only when `Synced` is false, because unable to upgrade gracefully
forceUpgradeAnnoSet := NeedForceUpgrade(tc.Annotations)
onlyOnePD := *oldPDSet.Spec.Replicas < 2 && len(tc.Status.PD.PeerMembers) == 0 // it's acceptable to use old record about peer members
if forceUpgradeAnnoSet || onlyOnePD {
tc.Status.PD.Phase = v1alpha1.UpgradePhase
mngerutils.SetUpgradePartition(newPDSet, 0)
errSTS := mngerutils.UpdateStatefulSet(m.deps.StatefulSetControl, tc, newPDSet, oldPDSet)
return controller.RequeueErrorf("tidbcluster: [%s/%s]'s pd needs force upgrade, %v", ns, tcName, errSTS)
}
}
// Scaling takes precedence over upgrading because:
// - if a pd fails in the upgrading, users may want to delete it or add
// new replicas
// - it's ok to scale in the middle of upgrading (in statefulset controller
// scaling takes precedence over upgrading too)
if err := m.scaler.Scale(tc, oldPDSet, newPDSet); err != nil {
return err
}
if m.deps.CLIConfig.AutoFailover {
if m.shouldRecover(tc) {
m.failover.Recover(tc)
} else if tc.Spec.PD.MaxFailoverCount != nil && *tc.Spec.PD.MaxFailoverCount > 0 && (tc.PDAllPodsStarted() && !tc.PDAllMembersReady() || tc.PDAutoFailovering()) {
if err := m.failover.Failover(tc); err != nil {
return err
}
}
}
if tc.Status.PD.VolReplaceInProgress {
// Volume Replace in Progress, so do not make any changes to Sts spec, overwrite with old pod spec
// config as we are not ready to upgrade yet.
_, podSpec, err := GetLastAppliedConfig(oldPDSet)
if err != nil {
return err
}
newPDSet.Spec.Template.Spec = *podSpec
}
if !templateEqual(newPDSet, oldPDSet) || tc.Status.PD.Phase == v1alpha1.UpgradePhase {
if err := m.upgrader.Upgrade(tc, oldPDSet, newPDSet); err != nil {
return err
}
}
return mngerutils.UpdateStatefulSetWithPrecheck(m.deps, tc, "FailedUpdatePDSTS", newPDSet, oldPDSet)
}
// shouldRecover checks whether we should perform recovery operation.
func (m *pdMemberManager) shouldRecover(tc *v1alpha1.TidbCluster) bool {
if tc.Status.PD.FailureMembers == nil {
return false
}
// If all desired replicas (excluding failover pods) of tidb cluster are
// healthy, we can perform our failover recovery operation.
// Note that failover pods may fail (e.g. lack of resources) and we don't care
// about them because we're going to delete them.
for ordinal := range tc.PDStsDesiredOrdinals(true) {
name := fmt.Sprintf("%s-%d", controller.PDMemberName(tc.GetName()), ordinal)
pod, err := m.deps.PodLister.Pods(tc.Namespace).Get(name)
if err != nil {
klog.Errorf("pod %s/%s does not exist: %v", tc.Namespace, name, err)
return false
}
if !k8s.IsPodReady(pod) {
return false
}
ok := false
for pdName, pdMember := range tc.Status.PD.Members {
if strings.Split(pdName, ".")[0] == pod.Name {
if !pdMember.Health {
return false
}
ok = true
break
}
}
if !ok {
return false
}
}
return true
}
func (m *pdMemberManager) syncTidbClusterStatus(tc *v1alpha1.TidbCluster, set *apps.StatefulSet) error {
if set == nil {
// skip if not created yet
return nil
}
ns := tc.GetNamespace()
tcName := tc.GetName()
tc.Status.PD.StatefulSet = &set.Status
upgrading, err := m.pdStatefulSetIsUpgrading(set, tc)
if err != nil {
return err
}
// Scaling takes precedence over upgrading.
if tc.PDStsDesiredReplicas() != *set.Spec.Replicas {
tc.Status.PD.Phase = v1alpha1.ScalePhase
} else if upgrading {
tc.Status.PD.Phase = v1alpha1.UpgradePhase
} else {
tc.Status.PD.Phase = v1alpha1.NormalPhase
}
pdClient := controller.GetPDClient(m.deps.PDControl, tc)
healthInfo, err := pdClient.GetHealth()
if err != nil {
tc.Status.PD.Synced = false
// get endpoints info
eps, epErr := m.deps.EndpointLister.Endpoints(ns).Get(controller.PDMemberName(tcName))
if epErr != nil {
return fmt.Errorf("syncTidbClusterStatus: failed to get endpoints %s for cluster %s/%s, err: %s, epErr %s", controller.PDMemberName(tcName), ns, tcName, err, epErr)
}
// pd service has no endpoints
if eps != nil && len(eps.Subsets) == 0 {
return fmt.Errorf("%s, service %s/%s has no endpoints", err, ns, controller.PDMemberName(tcName))
}
return err
}
cluster, err := pdClient.GetCluster()
if err != nil {
tc.Status.PD.Synced = false
return err
}
tc.Status.ClusterID = strconv.FormatUint(cluster.Id, 10)
leader, err := pdClient.GetPDLeader()
if err != nil {
tc.Status.PD.Synced = false
return err
}
rePDMembers, err := regexp.Compile(fmt.Sprintf(pdMemberLimitPattern, tc.Name, tc.Name, tc.Namespace, controller.FormatClusterDomainForRegex(tc.Spec.ClusterDomain)))
if err != nil {
return err
}
pdStatus := map[string]v1alpha1.PDMember{}
peerPDStatus := map[string]v1alpha1.PDMember{}
for _, memberHealth := range healthInfo.Healths {
memberID := memberHealth.MemberID
var clientURL string
if len(memberHealth.ClientUrls) > 0 {
clientURL = memberHealth.ClientUrls[0]
}
name := memberHealth.Name
if len(name) == 0 {
klog.Warningf("PD member: [%d] doesn't have a name, and can't get it from clientUrls: [%s], memberHealth Info: [%v] in [%s/%s]",
memberID, memberHealth.ClientUrls, memberHealth, ns, tcName)
continue
}
status := v1alpha1.PDMember{
Name: name,
ID: fmt.Sprintf("%d", memberID),
ClientURL: clientURL,
Health: memberHealth.Health,
}
status.LastTransitionTime = metav1.Now()
// matching `rePDMembers` means `clientURL` is a PD in current tc
if rePDMembers.Match([]byte(clientURL)) {
oldPDMember, exist := tc.Status.PD.Members[name]
if exist && status.Health == oldPDMember.Health {
status.LastTransitionTime = oldPDMember.LastTransitionTime
}
pdStatus[name] = status
} else {
oldPDMember, exist := tc.Status.PD.PeerMembers[name]
if exist && status.Health == oldPDMember.Health {
status.LastTransitionTime = oldPDMember.LastTransitionTime
}
peerPDStatus[name] = status
}
if name == leader.GetName() {
tc.Status.PD.Leader = status
}
}
tc.Status.PD.Synced = true
tc.Status.PD.Members = pdStatus
tc.Status.PD.PeerMembers = peerPDStatus
tc.Status.PD.Image = ""
if c := findContainerByName(set, "pd"); c != nil {
tc.Status.PD.Image = c.Image
}
if err := m.collectUnjoinedMembers(tc, set, pdStatus); err != nil {
return err
}
err = volumes.SyncVolumeStatus(m.podVolumeModifier, m.deps.PodLister, tc, v1alpha1.PDMemberType)
if err != nil {
return fmt.Errorf("failed to sync volume status for pd: %v", err)
}
return nil
}
// syncPDConfigMap syncs the configmap of PD
func (m *pdMemberManager) syncPDConfigMap(tc *v1alpha1.TidbCluster, set *apps.StatefulSet) (*corev1.ConfigMap, error) {
// For backward compatibility, only sync tidb configmap when .pd.config is non-nil
if tc.Spec.PD.Config == nil {
return nil, nil
}
newCm, err := getPDConfigMap(tc)
if err != nil {
return nil, err
}
var inUseName string
if set != nil {
inUseName = mngerutils.FindConfigMapVolume(&set.Spec.Template.Spec, func(name string) bool {
return strings.HasPrefix(name, controller.PDMemberName(tc.Name))
})
} else {
inUseName, err = mngerutils.FindConfigMapNameFromTCAnno(context.Background(), m.deps.ConfigMapLister, tc, v1alpha1.PDMemberType, newCm)
if err != nil {
return nil, err
}
}
err = mngerutils.UpdateConfigMapIfNeed(m.deps.ConfigMapLister, tc.BasePDSpec().ConfigUpdateStrategy(), inUseName, newCm)
if err != nil {
return nil, err
}
return m.deps.TypedControl.CreateOrUpdateConfigMap(tc, newCm)
}
func (m *pdMemberManager) getNewPDServiceForTidbCluster(tc *v1alpha1.TidbCluster) *corev1.Service {
ns := tc.Namespace
tcName := tc.Name
svcName := controller.PDMemberName(tcName)
instanceName := tc.GetInstanceName()
pdSelector := label.New().Instance(instanceName).PD()
pdLabels := pdSelector.Copy().UsedByEndUser().Labels()
pdService := &corev1.Service{
ObjectMeta: metav1.ObjectMeta{
Name: svcName,
Namespace: ns,
Labels: pdLabels,
OwnerReferences: []metav1.OwnerReference{controller.GetOwnerRef(tc)},
},
Spec: corev1.ServiceSpec{
Type: controller.GetServiceType(tc.Spec.Services, v1alpha1.PDMemberType.String()),
Ports: []corev1.ServicePort{
{
Name: "client",
Port: v1alpha1.DefaultPDClientPort,
TargetPort: intstr.FromInt(int(v1alpha1.DefaultPDClientPort)),
Protocol: corev1.ProtocolTCP,
},
},
Selector: pdSelector.Labels(),
},
}
// override fields with user-defined ServiceSpec
svcSpec := tc.Spec.PD.Service
if svcSpec != nil {
if svcSpec.Type != "" {
pdService.Spec.Type = svcSpec.Type
}
pdService.ObjectMeta.Annotations = util.CopyStringMap(svcSpec.Annotations)
pdService.ObjectMeta.Labels = util.CombineStringMap(pdService.ObjectMeta.Labels, svcSpec.Labels)
if svcSpec.LoadBalancerIP != nil {
pdService.Spec.LoadBalancerIP = *svcSpec.LoadBalancerIP
}
if svcSpec.ClusterIP != nil {
pdService.Spec.ClusterIP = *svcSpec.ClusterIP
}
if svcSpec.PortName != nil {
pdService.Spec.Ports[0].Name = *svcSpec.PortName
}
}
if tc.Spec.PreferIPv6 {
SetServiceWhenPreferIPv6(pdService)
}
return pdService
}
func getNewPDHeadlessServiceForTidbCluster(tc *v1alpha1.TidbCluster) *corev1.Service {
ns := tc.Namespace
tcName := tc.Name
svcName := controller.PDPeerMemberName(tcName)
instanceName := tc.GetInstanceName()
pdSelector := label.New().Instance(instanceName).PD()
pdLabels := pdSelector.Copy().UsedByPeer().Labels()
svc := &corev1.Service{
ObjectMeta: metav1.ObjectMeta{
Name: svcName,
Namespace: ns,
Labels: pdLabels,
OwnerReferences: []metav1.OwnerReference{controller.GetOwnerRef(tc)},
},
Spec: corev1.ServiceSpec{
ClusterIP: "None",
Ports: []corev1.ServicePort{
{
Name: fmt.Sprintf("tcp-peer-%d", v1alpha1.DefaultPDPeerPort),
Port: v1alpha1.DefaultPDPeerPort,
TargetPort: intstr.FromInt(int(v1alpha1.DefaultPDPeerPort)),
Protocol: corev1.ProtocolTCP,
},
{
Name: fmt.Sprintf("tcp-peer-%d", v1alpha1.DefaultPDClientPort),
Port: v1alpha1.DefaultPDClientPort,
TargetPort: intstr.FromInt(int(v1alpha1.DefaultPDClientPort)),
Protocol: corev1.ProtocolTCP,
},
},
Selector: pdSelector.Labels(),
PublishNotReadyAddresses: true,
},
}
if tc.Spec.PreferIPv6 {
SetServiceWhenPreferIPv6(svc)
}
return svc
}
func (m *pdMemberManager) pdStatefulSetIsUpgrading(set *apps.StatefulSet, tc *v1alpha1.TidbCluster) (bool, error) {
if mngerutils.StatefulSetIsUpgrading(set) {
return true, nil
}
instanceName := tc.GetInstanceName()
selector, err := label.New().
Instance(instanceName).
PD().
Selector()
if err != nil {
return false, err
}
pdPods, err := m.deps.PodLister.Pods(tc.GetNamespace()).List(selector)
if err != nil {
return false, fmt.Errorf("pdStatefulSetIsUpgrading: failed to list pods for cluster %s/%s, selector %s, error: %v", tc.GetNamespace(), instanceName, selector, err)
}
for _, pod := range pdPods {
revisionHash, exist := pod.Labels[apps.ControllerRevisionHashLabelKey]
if !exist {
return false, nil
}
if revisionHash != tc.Status.PD.StatefulSet.UpdateRevision {
return true, nil
}
}
return false, nil
}
func getNewPDSetForTidbCluster(tc *v1alpha1.TidbCluster, cm *corev1.ConfigMap) (*apps.StatefulSet, error) {
ns := tc.Namespace
tcName := tc.Name
basePDSpec := tc.BasePDSpec()
instanceName := tc.GetInstanceName()
pdConfigMap := controller.MemberConfigMapName(tc, v1alpha1.PDMemberType)
if cm != nil {
pdConfigMap = cm.Name
}
clusterVersionGE4, err := clusterVersionGreaterThanOrEqualTo4(tc.PDVersion(), tc.Spec.PD.Mode)
if err != nil {
klog.V(4).Infof("cluster version: %s is not semantic versioning compatible", tc.PDVersion())
}
annMount, annVolume := annotationsMountVolume()
dataVolumeName := string(v1alpha1.GetStorageVolumeName("", v1alpha1.PDMemberType))
volMounts := []corev1.VolumeMount{
annMount,
{Name: "config", ReadOnly: true, MountPath: "/etc/pd"},
{Name: "startup-script", ReadOnly: true, MountPath: "/usr/local/bin"},
{Name: dataVolumeName, MountPath: constants.PDDataVolumeMountPath},
}
if tc.IsTLSClusterEnabled() {
volMounts = append(volMounts, corev1.VolumeMount{
Name: "pd-tls", ReadOnly: true, MountPath: "/var/lib/pd-tls",
})
if tc.Spec.PD.MountClusterClientSecret != nil && *tc.Spec.PD.MountClusterClientSecret {
volMounts = append(volMounts, corev1.VolumeMount{
Name: util.ClusterClientVolName, ReadOnly: true, MountPath: util.ClusterClientTLSPath,
})
}
}
if tc.Spec.TiDB != nil && tc.Spec.TiDB.IsTLSClientEnabled() && !tc.SkipTLSWhenConnectTiDB() && clusterVersionGE4 {
volMounts = append(volMounts, corev1.VolumeMount{
Name: "tidb-client-tls", ReadOnly: true, MountPath: tidbClientCertPath,
})
}
vols := []corev1.Volume{
annVolume,
{Name: "config",
VolumeSource: corev1.VolumeSource{
ConfigMap: &corev1.ConfigMapVolumeSource{
LocalObjectReference: corev1.LocalObjectReference{
Name: pdConfigMap,
},
Items: []corev1.KeyToPath{{Key: "config-file", Path: "pd.toml"}},
},
},
},
{Name: "startup-script",
VolumeSource: corev1.VolumeSource{
ConfigMap: &corev1.ConfigMapVolumeSource{
LocalObjectReference: corev1.LocalObjectReference{
Name: pdConfigMap,
},
Items: []corev1.KeyToPath{{Key: "startup-script", Path: "pd_start_script.sh"}},
},
},
},
}
if tc.IsTLSClusterEnabled() {
vols = append(vols, corev1.Volume{
Name: "pd-tls", VolumeSource: corev1.VolumeSource{
Secret: &corev1.SecretVolumeSource{
SecretName: util.ClusterTLSSecretName(tc.Name, label.PDLabelVal),
},
},
})
if tc.Spec.PD.MountClusterClientSecret != nil && *tc.Spec.PD.MountClusterClientSecret {
vols = append(vols, corev1.Volume{
Name: util.ClusterClientVolName, VolumeSource: corev1.VolumeSource{
Secret: &corev1.SecretVolumeSource{
SecretName: util.ClusterClientTLSSecretName(tc.Name),
},
},
})
}
}
if tc.Spec.TiDB != nil && tc.Spec.TiDB.IsTLSClientEnabled() && !tc.SkipTLSWhenConnectTiDB() && clusterVersionGE4 {
vols = append(vols, corev1.Volume{
Name: "tidb-client-tls", VolumeSource: corev1.VolumeSource{
Secret: &corev1.SecretVolumeSource{
SecretName: util.TiDBClientTLSSecretName(tc.Name, tc.Spec.PD.TLSClientSecretName),
},
},
})
}
// handle StorageVolumes and AdditionalVolumeMounts in ComponentSpec
storageVolMounts, additionalPVCs := util.BuildStorageVolumeAndVolumeMount(tc.Spec.PD.StorageVolumes, tc.Spec.PD.StorageClassName, v1alpha1.PDMemberType)
volMounts = append(volMounts, storageVolMounts...)
volMounts = append(volMounts, tc.Spec.PD.AdditionalVolumeMounts...)
sysctls := "sysctl -w"
var initContainers []corev1.Container
if basePDSpec.Annotations() != nil {
init, ok := basePDSpec.Annotations()[label.AnnSysctlInit]
if ok && (init == label.AnnSysctlInitVal) {
if basePDSpec.PodSecurityContext() != nil && len(basePDSpec.PodSecurityContext().Sysctls) > 0 {
for _, sysctl := range basePDSpec.PodSecurityContext().Sysctls {
sysctls = sysctls + fmt.Sprintf(" %s=%s", sysctl.Name, sysctl.Value)
}
privileged := true
initContainers = append(initContainers, corev1.Container{
Name: "init",
Image: tc.HelperImage(),
Command: []string{
"sh",
"-c",
sysctls,
},
SecurityContext: &corev1.SecurityContext{
Privileged: &privileged,
},
// Init container resourceRequirements should be equal to app container.
// Scheduling is done based on effective requests/limits,
// which means init containers can reserve resources for
// initialization that are not used during the life of the Pod.
// ref:https://kubernetes.io/docs/concepts/workloads/pods/init-containers/#resources
Resources: controller.ContainerResource(tc.Spec.PD.ResourceRequirements),
})
}
}
}
// Init container is only used for the case where allowed-unsafe-sysctls
// cannot be enabled for kubelet, so clean the sysctl in statefulset
// SecurityContext if init container is enabled
podSecurityContext := basePDSpec.PodSecurityContext().DeepCopy()
if len(initContainers) > 0 {
podSecurityContext.Sysctls = []corev1.Sysctl{}
}
storageRequest, err := controller.ParseStorageRequest(tc.Spec.PD.Requests)
if err != nil {
return nil, fmt.Errorf("cannot parse storage request for PD, tidbcluster %s/%s, error: %v", tc.Namespace, tc.Name, err)
}
setName := controller.PDMemberName(tcName)
stsLabels := label.New().Instance(instanceName).PD()
podLabels := util.CombineStringMap(stsLabels, basePDSpec.Labels())
podAnnotations := util.CombineStringMap(basePDSpec.Annotations(), controller.AnnProm(v1alpha1.DefaultPDClientPort, "/metrics"))
stsAnnotations := getStsAnnotations(tc.Annotations, label.PDLabelVal)
deleteSlotsNumber, err := util.GetDeleteSlotsNumber(stsAnnotations)
if err != nil {
return nil, fmt.Errorf("get delete slots number of statefulset %s/%s failed, err:%v", ns, setName, err)
}
pdContainer := corev1.Container{
Name: v1alpha1.PDMemberType.String(),
Image: tc.PDImage(),
ImagePullPolicy: basePDSpec.ImagePullPolicy(),
Command: []string{"/bin/sh", "/usr/local/bin/pd_start_script.sh"},
Ports: []corev1.ContainerPort{
{
Name: "server",
ContainerPort: v1alpha1.DefaultPDPeerPort,
Protocol: corev1.ProtocolTCP,
},
{
Name: "client",
ContainerPort: v1alpha1.DefaultPDClientPort,
Protocol: corev1.ProtocolTCP,
},
},
VolumeMounts: volMounts,
Resources: controller.ContainerResource(tc.Spec.PD.ResourceRequirements),
}
if tc.Spec.PD.ReadinessProbe != nil {
pdContainer.ReadinessProbe = &corev1.Probe{
ProbeHandler: buildPDReadinessProbHandler(tc),
InitialDelaySeconds: int32(10),
}
}
if tc.Spec.PD.ReadinessProbe != nil {
if tc.Spec.PD.ReadinessProbe.InitialDelaySeconds != nil {
pdContainer.ReadinessProbe.InitialDelaySeconds = *tc.Spec.PD.ReadinessProbe.InitialDelaySeconds
}
if tc.Spec.PD.ReadinessProbe.PeriodSeconds != nil {
pdContainer.ReadinessProbe.PeriodSeconds = *tc.Spec.PD.ReadinessProbe.PeriodSeconds
}
}
env := []corev1.EnvVar{
{
Name: "NAMESPACE",
ValueFrom: &corev1.EnvVarSource{
FieldRef: &corev1.ObjectFieldSelector{
FieldPath: "metadata.namespace",
},
},
},
{
Name: "PEER_SERVICE_NAME",
Value: controller.PDPeerMemberName(tcName),
},
{
Name: "SERVICE_NAME",
Value: controller.PDMemberName(tcName),
},
{
Name: "SET_NAME",
Value: setName,
},
{
Name: "TZ",
Value: tc.Spec.Timezone,
},
}
podSpec := basePDSpec.BuildPodSpec()
if basePDSpec.HostNetwork() {
env = append(env, corev1.EnvVar{
Name: "POD_NAME",
ValueFrom: &corev1.EnvVarSource{
FieldRef: &corev1.ObjectFieldSelector{
FieldPath: "metadata.name",
},
},
})
}
pdContainer.Env = util.AppendEnv(env, basePDSpec.Env())
pdContainer.EnvFrom = basePDSpec.EnvFrom()
podSpec.Volumes = append(vols, basePDSpec.AdditionalVolumes()...)
podSpec.Containers, err = MergePatchContainers([]corev1.Container{pdContainer}, basePDSpec.AdditionalContainers())
if err != nil {
return nil, fmt.Errorf("failed to merge containers spec for PD of [%s/%s], error: %v", tc.Namespace, tc.Name, err)
}
podSpec.ServiceAccountName = tc.Spec.PD.ServiceAccount
if podSpec.ServiceAccountName == "" {
podSpec.ServiceAccountName = tc.Spec.ServiceAccount
}
podSpec.SecurityContext = podSecurityContext
podSpec.InitContainers = append(initContainers, basePDSpec.InitContainers()...)
updateStrategy := apps.StatefulSetUpdateStrategy{}
if tc.Status.PD.VolReplaceInProgress {
updateStrategy.Type = apps.OnDeleteStatefulSetStrategyType
} else if basePDSpec.StatefulSetUpdateStrategy() == apps.OnDeleteStatefulSetStrategyType {
updateStrategy.Type = apps.OnDeleteStatefulSetStrategyType
} else {
updateStrategy.Type = apps.RollingUpdateStatefulSetStrategyType
updateStrategy.RollingUpdate = &apps.RollingUpdateStatefulSetStrategy{
Partition: pointer.Int32Ptr(tc.PDStsDesiredReplicas() + deleteSlotsNumber),
}
}
pdSet := &apps.StatefulSet{
ObjectMeta: metav1.ObjectMeta{
Name: setName,
Namespace: ns,
Labels: stsLabels.Labels(),
Annotations: stsAnnotations,
OwnerReferences: []metav1.OwnerReference{controller.GetOwnerRef(tc)},
},
Spec: apps.StatefulSetSpec{
Replicas: pointer.Int32Ptr(tc.PDStsDesiredReplicas()),
Selector: stsLabels.LabelSelector(),
Template: corev1.PodTemplateSpec{
ObjectMeta: metav1.ObjectMeta{
Labels: podLabels,
Annotations: podAnnotations,
},
Spec: podSpec,
},
VolumeClaimTemplates: []corev1.PersistentVolumeClaim{
util.VolumeClaimTemplate(storageRequest, dataVolumeName, tc.Spec.PD.StorageClassName),
},
ServiceName: controller.PDPeerMemberName(tcName),
PodManagementPolicy: basePDSpec.PodManagementPolicy(),
UpdateStrategy: updateStrategy,
},
}
pdSet.Spec.VolumeClaimTemplates = append(pdSet.Spec.VolumeClaimTemplates, additionalPVCs...)
return pdSet, nil
}
func getPDConfigMap(tc *v1alpha1.TidbCluster) (*corev1.ConfigMap, error) {
// For backward compatibility, only sync tidb configmap when .tidb.config is non-nil
if tc.Spec.PD.Config == nil {
return nil, nil
}
config := tc.Spec.PD.Config.DeepCopy() // use copy to not update tc spec
clusterVersionGE4, err := clusterVersionGreaterThanOrEqualTo4(tc.PDVersion(), tc.Spec.PD.Mode)
if err != nil {
klog.V(4).Infof("cluster version: %s is not semantic versioning compatible", tc.PDVersion())
}
// override CA if tls enabled
if tc.IsTLSClusterEnabled() {
config.Set("security.cacert-path", path.Join(pdClusterCertPath, tlsSecretRootCAKey))
config.Set("security.cert-path", path.Join(pdClusterCertPath, corev1.TLSCertKey))
config.Set("security.key-path", path.Join(pdClusterCertPath, corev1.TLSPrivateKeyKey))
}
// Versions below v4.0 do not support Dashboard
if tc.Spec.TiDB != nil && tc.Spec.TiDB.IsTLSClientEnabled() && !tc.SkipTLSWhenConnectTiDB() && clusterVersionGE4 {
if !tc.Spec.TiDB.TLSClient.SkipInternalClientCA {
config.Set("dashboard.tidb-cacert-path", path.Join(tidbClientCertPath, tlsSecretRootCAKey))
}
config.Set("dashboard.tidb-cert-path", path.Join(tidbClientCertPath, corev1.TLSCertKey))
config.Set("dashboard.tidb-key-path", path.Join(tidbClientCertPath, corev1.TLSPrivateKeyKey))
}
if tc.Spec.PD.EnableDashboardInternalProxy != nil {
config.Set("dashboard.internal-proxy", *tc.Spec.PD.EnableDashboardInternalProxy)
}
confText, err := config.MarshalTOML()
if err != nil {
return nil, err
}
startScript, err := startscript.RenderPDStartScript(tc)
if err != nil {
return nil, err
}
instanceName := tc.GetInstanceName()
pdLabel := label.New().Instance(instanceName).PD().Labels()
cm := &corev1.ConfigMap{
ObjectMeta: metav1.ObjectMeta{
Name: controller.PDMemberName(tc.Name),
Namespace: tc.Namespace,
Labels: pdLabel,
OwnerReferences: []metav1.OwnerReference{controller.GetOwnerRef(tc)},
},
Data: map[string]string{
"config-file": string(confText),
"startup-script": startScript,
},
}
return cm, nil
}
func clusterVersionGreaterThanOrEqualTo4(version, model string) (bool, error) {
// TODO: remove `model` and `nightly` when support pd microservice docker
if model == "ms" && version == "nightly" {
return true, nil
}
v, err := semver.NewVersion(version)
if err != nil {
return true, err
}
return v.Major() >= 4, nil
}
// find PD pods in set that have not joined the PD cluster yet.
// pdStatus contains the PD members in the PD cluster.
func (m *pdMemberManager) collectUnjoinedMembers(tc *v1alpha1.TidbCluster, set *apps.StatefulSet, pdStatus map[string]v1alpha1.PDMember) error {
ns := tc.GetNamespace()
podSelector, podSelectErr := metav1.LabelSelectorAsSelector(set.Spec.Selector)
if podSelectErr != nil {
return podSelectErr
}
pods, podErr := m.deps.PodLister.Pods(tc.Namespace).List(podSelector)
if podErr != nil {
return fmt.Errorf("collectUnjoinedMembers: failed to list pods for cluster %s/%s, selector %s, error %v", tc.GetNamespace(), tc.GetName(), set.Spec.Selector, podErr)
}
// check all pods in PD sts to see whether it has already joined the PD cluster
unjoined := map[string]v1alpha1.UnjoinedMember{}
for _, pod := range pods {
var joined = false
// if current PD pod name is in the keys of pdStatus, it has joined the PD cluster
for pdName := range pdStatus {
ordinal, err := util.GetOrdinalFromPodName(pod.Name)
if err != nil {
return fmt.Errorf("unexpected pod name %q: %v", pod.Name, err)
}
if strings.EqualFold(PdName(tc.Name, ordinal, tc.Namespace, tc.Spec.ClusterDomain, tc.Spec.AcrossK8s), pdName) {
joined = true
break
}
}
if !joined {
pvcs, err := util.ResolvePVCFromPod(pod, m.deps.PVCLister)
if err != nil {
return fmt.Errorf("collectUnjoinedMembers: failed to get pvcs for pod %s/%s, error: %s", ns, pod.Name, err)
}
pvcUIDSet := make(map[types.UID]v1alpha1.EmptyStruct)
for _, pvc := range pvcs {
pvcUIDSet[pvc.UID] = v1alpha1.EmptyStruct{}
}
unjoined[pod.Name] = v1alpha1.UnjoinedMember{
PodName: pod.Name,
PVCUIDSet: pvcUIDSet,
CreatedAt: metav1.Now(),
}
}
}
tc.Status.PD.UnjoinedMembers = unjoined
return nil
}
// TODO: Support check status http request in future.
func buildPDReadinessProbHandler(tc *v1alpha1.TidbCluster) corev1.ProbeHandler {
return corev1.ProbeHandler{
TCPSocket: &corev1.TCPSocketAction{
Port: intstr.FromInt(int(v1alpha1.DefaultPDClientPort)),