forked from goodrain/rainbond
/
manager_statefulset.go
437 lines (424 loc) · 17.8 KB
/
manager_statefulset.go
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// Copyright (C) 2014-2018 Goodrain Co., Ltd.
// RAINBOND, Application Management Platform
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version. For any non-GPL usage of Rainbond,
// one or multiple Commercial Licenses authorized by Goodrain Co., Ltd.
// must be obtained first.
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
package appm
import (
"github.com/goodrain/rainbond/db/model"
"github.com/goodrain/rainbond/event"
"fmt"
"strings"
"time"
"github.com/Sirupsen/logrus"
"github.com/jinzhu/gorm"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/types"
"k8s.io/client-go/pkg/api/v1"
"k8s.io/client-go/pkg/apis/apps/v1beta1"
)
//StartStatefulSet 部署StartStatefulSet
//返回部署结果
func (m *manager) StartStatefulSet(serviceID string, logger event.Logger) (*v1beta1.StatefulSet, error) {
logger.Info("创建StatefulSet资源开始", map[string]string{"step": "worker-appm", "status": "starting"})
builder, err := StatefulSetBuilder(serviceID, logger, m.conf.NodeAPI)
if err != nil {
logrus.Error("create statefulset builder error.", err.Error())
logger.Error("创建StatefulSet Builder失败", map[string]string{"step": "worker-appm", "status": "error"})
return nil, err
}
//判断应用镜像名称是否合法,非法镜像名进制启动
deployVersion,err:=m.dbmanager.VersionInfoDao().GetVersionByDeployVersion(builder.service.DeployVersion,serviceID)
imageName:=builder.service.ImageName
if err != nil {
logrus.Warnf("error get version info by deployversion %s,details %s",builder.service.DeployVersion,err.Error())
}else{
if CheckVersionInfo(deployVersion) {
imageName=deployVersion.ImageName
}
}
if !strings.HasPrefix(imageName, "goodrain.me/") {
logger.Error("启动应用失败,镜像名(%s)非法,请重新构建应用", map[string]string{"step": "callback", "status": "error"})
return nil, fmt.Errorf("service image name invoid, it only can with prefix goodrain.me/")
}
statefull, err := builder.Build()
if err != nil {
logrus.Error("build statefulset error.", err.Error())
logger.Error("创建StatefulSet失败", map[string]string{"step": "worker-appm", "status": "error"})
return nil, err
}
//有状态服务先创建service
if statefull != nil {
err := m.StartService(serviceID, logger, statefull.Name, model.TypeStatefulSet)
if err != nil {
logger.Error("Service创建执行失败。"+err.Error(), map[string]string{"step": "callback", "status": "failure"})
return nil, err
}
}
result, err := m.kubeclient.AppsV1beta1().StatefulSets(builder.GetTenant()).Create(statefull)
if err != nil {
logrus.Error("deploy statefulset to apiserver error.", err.Error())
logger.Error("部署StatefulSet到集群失败", map[string]string{"step": "worker-appm", "status": "error"})
return nil, err
}
err = m.dbmanager.K8sDeployReplicationDao().AddModel(&model.K8sDeployReplication{
TenantID: builder.GetTenant(),
ServiceID: serviceID,
ReplicationID: statefull.Name,
ReplicationType: model.TypeStatefulSet,
DeployVersion: builder.service.DeployVersion,
})
if err != nil {
logrus.Error("save statefulset info to db error.", err.Error())
logger.Error("存储StatefulSet信息到数据库错误", map[string]string{"step": "worker-appm", "status": "error"})
}
err = m.waitStatefulReplicasReady(*statefull.Spec.Replicas, serviceID, logger, result)
if err != nil {
if err == ErrTimeOut {
return result, err
}
logrus.Error("deploy statefulset to apiserver then watch error.", err.Error())
logger.Error("StatefulSet实例启动情况检测失败", map[string]string{"step": "worker-appm", "status": "error"})
return result, err
}
return result, nil
}
//StopStatefulSet 停止
func (m *manager) StopStatefulSet(serviceID string, logger event.Logger) error {
logger.Info("停止删除StatefulSet资源开始", map[string]string{"step": "worker-appm", "status": "starting"})
service, err := m.dbmanager.TenantServiceDao().GetServiceByID(serviceID)
if err != nil {
logrus.Error("delete statefulset error. find service from db error", err.Error())
logger.Error("查询应用信息失败", map[string]string{"step": "worker-appm", "status": "error"})
return err
}
deploys, err := m.dbmanager.K8sDeployReplicationDao().GetK8sDeployReplicationByService(serviceID)
if err != nil {
if err == gorm.ErrRecordNotFound {
logger.Error("应用未部署", map[string]string{"step": "worker-appm", "status": "error"})
return ErrNotDeploy
}
logrus.Error("find service deploy info from db error", err.Error())
logger.Error("查询应用部署信息失败", map[string]string{"step": "worker-appm", "status": "error"})
return err
}
var deploy *model.K8sDeployReplication
if deploys != nil || len(deploys) > 0 {
for _, d := range deploys {
if !d.IsDelete {
deploy = d
}
}
}
if deploy == nil {
logger.Error("应用未部署", map[string]string{"step": "worker-appm", "status": "success"})
return ErrNotDeploy
}
for _, deploy := range deploys {
//更新stateful pod数量为0
stateful, err := m.kubeclient.AppsV1beta1().StatefulSets(service.TenantID).Patch(deploy.ReplicationID, types.StrategicMergePatchType, Replicas0)
if err != nil {
if err = checkNotFoundError(err); err != nil {
logrus.Error("patch statefulset info error.", err.Error())
logger.Error("更改StatefulSet Pod数量为0失败", map[string]string{"step": "worker-appm", "status": "error"})
return err
}
logger.Info("集群中StatefulSet已不存在", map[string]string{"step": "worker-appm", "status": "error"})
err = m.dbmanager.K8sDeployReplicationDao().DeleteK8sDeployReplicationByService(serviceID)
if err != nil {
if err != gorm.ErrRecordNotFound {
logrus.Error("delete deploy info from db error.", err.Error())
}
}
return nil
}
//判断pod数量为0
err = m.waitStatefulReplicas(0, logger, stateful)
if err != nil {
if err != ErrTimeOut {
logger.Error("更改StatefulSet Pod数量为0结果检测错误", map[string]string{"step": "worker-appm", "status": "error"})
logrus.Error("patch StatefulSet replicas to 0 and watch error.", err.Error())
return err
}
logger.Error("更改StatefulSet Pod数量为0结果检测超时,继续删除RC", map[string]string{"step": "worker-appm", "status": "error"})
}
//删除stateful
err = m.kubeclient.AppsV1beta1().StatefulSets(service.TenantID).Delete(service.ServiceAlias, &metav1.DeleteOptions{})
if err != nil {
if err = checkNotFoundError(err); err != nil {
logrus.Error("delete statefulset error.", err.Error())
logger.Error("从集群中删除StatefulSet失败", map[string]string{"step": "worker-appm", "status": "error"})
return err
}
}
err = m.dbmanager.K8sDeployReplicationDao().DeleteK8sDeployReplicationByService(serviceID)
if err != nil {
if err != gorm.ErrRecordNotFound {
logrus.Error("delete deploy info from db error.", err.Error())
}
}
}
//删除未移除成功的pod
logger.Info("开始移除残留的Pod实例", map[string]string{"step": "worker-appm", "status": "starting"})
pods, err := m.dbmanager.K8sPodDao().GetPodByService(serviceID)
if err != nil {
logrus.Error("get more than need by deleted pod from db error.", err.Error())
logger.Error("查询更过需要被移除的Pod失败", map[string]string{"step": "worker-appm", "status": "error"})
}
if pods != nil && len(pods) > 0 {
for i := range pods {
pod := pods[i]
err = m.kubeclient.CoreV1().Pods(service.TenantID).Delete(pod.PodName, &metav1.DeleteOptions{})
if err != nil {
if err = checkNotFoundError(err); err != nil {
logrus.Errorf("delete pod (%s) from k8s api error %s", pod.PodName, err.Error())
}
} else {
logger.Info(fmt.Sprintf("实例(%s)已停止并移除", pod.PodName), map[string]string{"step": "worker-appm"})
}
}
err = m.dbmanager.K8sPodDao().DeleteK8sPod(serviceID)
if err != nil {
if err != gorm.ErrRecordNotFound {
logrus.Error("delete pods by service id error.", err.Error())
}
}
}
return nil
}
func (m *manager) waitStateful(mode, serviceID string, n int32, logger event.Logger, stateful *v1beta1.StatefulSet) error {
if mode == "up" {
logger.Info("扩容结果监听开始", map[string]string{"step": "worker-appm", "status": "starting"})
return m.waitStatefulReplicasReady(n, serviceID, logger, stateful)
}
if mode == "down" {
logger.Info("缩容结果监听开始", map[string]string{"step": "worker-appm", "status": "starting"})
return m.waitStatefulReplicas(n, logger, stateful)
}
return nil
}
//移除实例检测
func (m *manager) waitStatefulReplicas(n int32, logger event.Logger, stateful *v1beta1.StatefulSet) error {
if stateful.Status.Replicas <= n {
return nil
}
second := int32(40)
var deleteCount int32
if stateful.Status.Replicas-n > 0 {
deleteCount = stateful.Status.Replicas - n
second = second * deleteCount
}
logger.Info(fmt.Sprintf("实例开始顺序关闭,需要关闭实例数 %d, 超时时间:%d秒 ", stateful.Status.Replicas-n, second), map[string]string{"step": "worker-appm"})
timeout := time.Tick(time.Duration(second) * time.Second)
watch, err := m.kubeclient.AppsV1beta1().StatefulSets(stateful.Namespace).Watch(metav1.ListOptions{
LabelSelector: fmt.Sprintf("name=%s,version=%s", stateful.Labels["name"], stateful.Labels["version"]),
ResourceVersion: stateful.ResourceVersion,
})
if err != nil {
return err
}
defer watch.Stop()
podWatch, err := m.kubeclient.CoreV1().Pods(stateful.Namespace).Watch(metav1.ListOptions{
LabelSelector: fmt.Sprintf("name=%s,version=%s", stateful.Labels["name"], stateful.Labels["version"]),
})
if err != nil {
return err
}
defer podWatch.Stop()
for {
select {
case <-timeout:
logger.Error("实例关闭超时,请重试!", map[string]string{"step": "worker-appm", "status": "error"})
return ErrTimeOut
case event := <-watch.ResultChan():
state := event.Object.(*v1beta1.StatefulSet)
logger.Info(fmt.Sprintf("实例正在顺序关闭,当前应用实例数 %d", state.Status.Replicas), map[string]string{"step": "worker-appm"})
case event := <-podWatch.ResultChan():
if event.Type == "DELETED" {
deleteCount--
pod := event.Object.(*v1.Pod)
m.statusCache.RemovePod(pod.Name)
logger.Info(fmt.Sprintf("实例(%s)已停止并移除", pod.Name), map[string]string{"step": "worker-appm"})
if deleteCount <= 0 {
return nil
}
}
}
}
}
//增加实例检测
func (m *manager) waitStatefulReplicasReady(n int32, serviceID string, logger event.Logger, stateful *v1beta1.StatefulSet) error {
if stateful.Status.Replicas >= n {
logger.Info(fmt.Sprintf("启动实例数 %d,已完成", stateful.Status.Replicas), map[string]string{"step": "worker-appm"})
return nil
}
second := int32(60)
if stateful != nil && len(stateful.Spec.Template.Spec.Containers) > 0 {
for _, c := range stateful.Spec.Template.Spec.Containers {
if c.ReadinessProbe != nil {
second += c.ReadinessProbe.InitialDelaySeconds + c.ReadinessProbe.SuccessThreshold*c.ReadinessProbe.PeriodSeconds
}
}
}
if n > 0 {
second = second * n
}
logger.Info(fmt.Sprintf("实例开始顺序启动,需要启动实例数 %d, 超时时间:%d秒 ", n, second), map[string]string{"step": "worker-appm"})
timeout := time.Tick(time.Duration(second) * time.Second)
watch, err := m.kubeclient.AppsV1beta1().StatefulSets(stateful.Namespace).Watch(metav1.ListOptions{
LabelSelector: fmt.Sprintf("name=%s,version=%s", stateful.Labels["name"], stateful.Labels["version"]),
ResourceVersion: stateful.ResourceVersion,
})
if err != nil {
return err
}
defer watch.Stop()
podWatch, err := m.kubeclient.CoreV1().Pods(stateful.Namespace).Watch(metav1.ListOptions{
LabelSelector: fmt.Sprintf("name=%s,version=%s", stateful.Labels["name"], stateful.Labels["version"]),
})
if err != nil {
return err
}
defer podWatch.Stop()
var readyPodCount int32
for {
select {
case <-timeout:
logger.Error("实例启动超时,置于后台启动,请留意应用状态", map[string]string{"step": "worker-appm", "status": "error"})
return ErrTimeOut
case event := <-watch.ResultChan():
state := event.Object.(*v1beta1.StatefulSet)
logger.Info(fmt.Sprintf("实例正在顺序启动,当前启动实例数 %d,未启动实例数 %d ", state.Status.Replicas, n-state.Status.Replicas), map[string]string{"step": "worker-appm"})
case event := <-podWatch.ResultChan():
if event.Type == "ADDED" || event.Type == "MODIFIED" {
pod := event.Object.(*v1.Pod)
status := m.statusCache.AddPod(pod.Name, logger)
if ok, err := status.AddStatus(pod.Status); ok {
readyPodCount++
if readyPodCount >= n {
return nil
}
} else if err != nil {
return err
}
}
}
}
}
//RollingUpgradeStatefulSet 临时实现有状态服务的升级,采用重启操作
func (m *manager) RollingUpgradeStatefulSet(serviceID string, logger event.Logger) (*v1beta1.StatefulSet, error) {
service, err := m.dbmanager.TenantServiceDao().GetServiceByID(serviceID)
if err != nil {
logrus.Error("delete statefulset error. find service from db error", err.Error())
logger.Error("查询应用信息失败", map[string]string{"step": "worker-appm", "status": "error"})
return nil, err
}
deploys, err := m.dbmanager.K8sDeployReplicationDao().GetK8sDeployReplicationByService(serviceID)
if err != nil {
if err == gorm.ErrRecordNotFound {
logger.Info("应用未部署,开始启动应用", map[string]string{"step": "worker-appm", "status": "success"})
return m.StartStatefulSet(serviceID, logger)
}
logrus.Error("get old deploy info error.", err.Error())
logger.Error("获取当前应用部署信息失败", map[string]string{"step": "worker-appm", "status": "error"})
return nil, err
}
var deploy *model.K8sDeployReplication
if deploys != nil || len(deploys) > 0 {
for _, d := range deploys {
if !d.IsDelete {
deploy = d
}
}
}
if deploy == nil {
logger.Info("应用未部署,开始启动应用", map[string]string{"step": "worker-appm", "status": "success"})
return m.StartStatefulSet(serviceID, logger)
}
logger.Info("有状态服务重启操作开始", map[string]string{"step": "worker-appm", "status": "success"})
for _, deploy := range deploys {
//更新stateful pod数量为0
stateful, err := m.kubeclient.AppsV1beta1().StatefulSets(service.TenantID).Patch(deploy.ReplicationID, types.StrategicMergePatchType, Replicas0)
if err != nil {
if err = checkNotFoundError(err); err != nil {
logrus.Error("patch statefulset info error.", err.Error())
logger.Error("更改StatefulSet Pod数量为0失败", map[string]string{"step": "worker-appm", "status": "error"})
return nil, err
}
logger.Info("集群中StatefulSet已不存在", map[string]string{"step": "worker-appm", "status": "error"})
err = m.dbmanager.K8sDeployReplicationDao().DeleteK8sDeployReplicationByService(serviceID)
if err != nil {
if err != gorm.ErrRecordNotFound {
logrus.Error("delete deploy info from db error.", err.Error())
}
}
return nil, nil
}
//判断pod数量为0
err = m.waitStatefulReplicas(0, logger, stateful)
if err != nil {
if err != ErrTimeOut {
logger.Error("更改StatefulSet Pod数量为0结果检测错误", map[string]string{"step": "worker-appm", "status": "error"})
logrus.Error("patch StatefulSet replicas to 0 and watch error.", err.Error())
return nil, err
}
logger.Error("更改StatefulSet Pod数量为0结果检测超时,继续删除RC", map[string]string{"step": "worker-appm", "status": "error"})
}
//删除stateful
err = m.kubeclient.AppsV1beta1().StatefulSets(service.TenantID).Delete(service.ServiceAlias, &metav1.DeleteOptions{})
if err != nil {
if err = checkNotFoundError(err); err != nil {
logrus.Error("delete statefulset error.", err.Error())
logger.Error("从集群中删除StatefulSet失败", map[string]string{"step": "worker-appm", "status": "error"})
return nil, err
}
}
err = m.dbmanager.K8sDeployReplicationDao().DeleteK8sDeployReplicationByService(serviceID)
if err != nil {
if err != gorm.ErrRecordNotFound {
logrus.Error("delete deploy info from db error.", err.Error())
}
}
}
//删除未移除成功的pod
logger.Info("开始移除残留的Pod实例", map[string]string{"step": "worker-appm", "status": "starting"})
pods, err := m.dbmanager.K8sPodDao().GetPodByService(serviceID)
if err != nil {
logrus.Error("get more than need by deleted pod from db error.", err.Error())
logger.Error("查询更过需要被移除的Pod失败", map[string]string{"step": "worker-appm", "status": "error"})
}
if pods != nil && len(pods) > 0 {
for i := range pods {
pod := pods[i]
err = m.kubeclient.CoreV1().Pods(service.TenantID).Delete(pod.PodName, &metav1.DeleteOptions{})
if err != nil {
if err = checkNotFoundError(err); err != nil {
logrus.Errorf("delete pod (%s) from k8s api error %s", pod.PodName, err.Error())
}
} else {
logger.Info(fmt.Sprintf("实例(%s)已停止并移除", pod.PodName), map[string]string{"step": "worker-appm"})
}
}
//如果滚动升级时,需要删除以下代码
err = m.dbmanager.K8sPodDao().DeleteK8sPod(serviceID)
if err != nil {
if err != gorm.ErrRecordNotFound {
logrus.Error("delete pods by service id error.", err.Error())
}
}
}
if err := m.StopService(serviceID, logger); err != nil {
return nil, err
}
logger.Info("开始启动有状态应用实例", map[string]string{"step": "worker-appm", "status": "starting"})
return m.StartStatefulSet(serviceID, logger)
}