/
update.go
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/
update.go
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/*
* Tencent is pleased to support the open source community by making TKEStack
* available.
*
* Copyright (C) 2012-2019 Tencent. All Rights Reserved.
*
* 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
*
* https://opensource.org/licenses/Apache-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an “AS IS” BASIS, WITHOUT
* WARRANTIES OF ANY KIND, either express or implied. See the License for the
* specific language governing permissions and limitations under the License.
*/
package cluster
import (
"context"
"encoding/json"
"fmt"
"reflect"
"strings"
"time"
"github.com/pkg/errors"
"github.com/thoas/go-funk"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/fields"
"k8s.io/apimachinery/pkg/labels"
"k8s.io/apimachinery/pkg/selection"
"k8s.io/apimachinery/pkg/util/yaml"
"k8s.io/client-go/kubernetes"
certutil "k8s.io/client-go/util/cert"
platformv1 "tkestack.io/tke/api/platform/v1"
kubeadmv1beta2 "tkestack.io/tke/pkg/platform/provider/baremetal/apis/kubeadm/v1beta2"
"tkestack.io/tke/pkg/platform/provider/baremetal/constants"
"tkestack.io/tke/pkg/platform/provider/baremetal/images"
"tkestack.io/tke/pkg/platform/provider/baremetal/phases/kubeadm"
"tkestack.io/tke/pkg/platform/provider/baremetal/util"
v1 "tkestack.io/tke/pkg/platform/types/v1"
"tkestack.io/tke/pkg/util/log"
)
func (p *Provider) EnsureRenewCerts(ctx context.Context, c *v1.Cluster) error {
for _, machine := range c.Spec.Machines {
logger := log.FromContext(ctx).WithValues("node", machine.IP)
s, err := machine.SSH()
if err != nil {
return err
}
data, err := s.ReadFile(constants.APIServerCertName)
if err != nil {
logger.Error(err, "read cert file error")
return nil
}
certs, err := certutil.ParseCertsPEM(data)
if err != nil {
logger.Error(err, "ParseCertsPEM error")
return nil
}
expirationDuration := time.Until(certs[0].NotAfter)
if expirationDuration > constants.RenewCertsTimeThreshold {
logger.Info("Skip EnsureRenewCerts because expiration duration > threshold",
"duration", expirationDuration.String(),
"threshold", constants.RenewCertsTimeThreshold.String(),
)
return nil
}
logger.Info("RenewCerts doing")
err = kubeadm.RenewCerts(c, s)
if err != nil {
return errors.Wrap(err, machine.IP)
}
logger.Info("RenewCerts done")
}
return nil
}
func (p *Provider) EnsureAPIServerCert(ctx context.Context, c *v1.Cluster) error {
kubeadmConfig := p.getKubeadmInitConfig(c)
exptectCertSANs := GetAPIServerCertSANs(c.Cluster)
needUpload := false
for _, machine := range c.Spec.Machines {
s, err := machine.SSH()
if err != nil {
return err
}
data, err := s.ReadFile(constants.APIServerCertName)
if err == nil {
certs, err := certutil.ParseCertsPEM(data)
if err != nil {
return err
}
actualCertSANs := certs[0].DNSNames
for _, ip := range certs[0].IPAddresses {
actualCertSANs = append(actualCertSANs, ip.String())
}
if reflect.DeepEqual(funk.IntersectString(actualCertSANs, exptectCertSANs), exptectCertSANs) {
continue
}
log.FromContext(ctx).Info("EnsureAPIServerCert",
"nodeName", s.Host,
"exptectCertSANs", exptectCertSANs,
"actualCertSANs", actualCertSANs,
)
}
var preActions []string
for _, file := range []string{constants.APIServerCertName, constants.APIServerKeyName} {
preActions = append(preActions, fmt.Sprintf("rm -f %s", file))
}
err = kubeadm.WriteInitConfig(s, kubeadmConfig)
if err != nil {
return errors.Wrap(err, machine.IP)
}
err = kubeadm.Init(s, "certs apiserver", preActions...)
if err != nil {
return errors.Wrap(err, machine.IP)
}
err = kubeadm.RestartContainerByLabel(c, s, kubeadm.ContainerLabelOfControlPlane(c, "kube-apiserver"))
if err != nil {
return err
}
needUpload = true
}
if needUpload {
err := p.EnsureKubeadmInitPhaseUploadConfig(ctx, c)
if err != nil {
return err
}
}
return nil
}
func (p *Provider) EnsurePreClusterUpgradeHook(ctx context.Context, c *v1.Cluster) error {
return util.ExcuteCustomizedHook(ctx, c, platformv1.HookPreClusterUpgrade, c.Spec.Machines[:1])
}
func (p *Provider) EnsureUpgradeCoreDNS(ctx context.Context, c *v1.Cluster) error {
logger := log.FromContext(ctx).WithName("Upgrade coreDNS")
if p.needSetCoreDNS(c.Spec.Version) {
client, err := c.Clientset()
if err != nil {
return errors.Wrap(err, "unable to update coreDNS version")
}
err = updateCoreDNSVersion(ctx, client, images.Get().CoreDNS.Tag)
if err != nil {
return errors.Wrap(err, "unable to update coreDNS version")
}
} else {
logger.Infof("Target k8s version is %s, skip upgrade coreDNS", c.Spec.Version)
}
return nil
}
func updateCoreDNSVersion(ctx context.Context, client kubernetes.Interface, version string) error {
cm, err := client.CoreV1().ConfigMaps(metav1.NamespaceSystem).Get(ctx, "kubeadm-config", metav1.GetOptions{})
if err != nil {
return err
}
clsConfigData, err := yaml.ToJSON([]byte(cm.Data["ClusterConfiguration"]))
if err != nil {
return err
}
clsConfig := kubeadmv1beta2.ClusterConfiguration{}
err = json.Unmarshal(clsConfigData, &clsConfig)
if err != nil {
return err
}
clsConfig.DNS.ImageTag = version
clsConfigData, err = kubeadm.MarshalToYAML(&clsConfig)
if err != nil {
return err
}
cm.Data["ClusterConfiguration"] = string(clsConfigData)
_, err = client.CoreV1().ConfigMaps(metav1.NamespaceSystem).Update(ctx, cm, metav1.UpdateOptions{})
return err
}
func (p *Provider) EnsureUpgradeControlPlaneNode(ctx context.Context, c *v1.Cluster) error {
// check all machines are upgraded before upgrade cluster
requirement, err := labels.NewRequirement(constants.LabelNodeNeedUpgrade, selection.Exists, []string{})
if err != nil {
return err
}
machines, err := p.PlatformClient.Machines().List(context.TODO(), metav1.ListOptions{
LabelSelector: requirement.String(),
FieldSelector: fields.OneTermEqualSelector(platformv1.MachineClusterField, c.Name).String(),
})
if err != nil {
return err
}
if len(machines.Items) != 0 {
var itemsName []string
for _, item := range machines.Items {
itemsName = append(itemsName, item.Name)
}
return fmt.Errorf("some machines, [%s], need to be upgraded", strings.Join(itemsName, ","))
}
client, err := c.Clientset()
if err != nil {
return err
}
option := kubeadm.UpgradeOption{
NodeRole: kubeadm.NodeRoleMaster,
Version: c.Spec.Version,
MaxUnready: c.Spec.Features.Upgrade.Strategy.MaxUnready,
DrainNodeBeforeUpgrade: c.Spec.Features.Upgrade.Strategy.DrainNodeBeforeUpgrade,
}
logger := log.FromContext(ctx).WithName("Cluster upgrade")
for i, machine := range c.Spec.Machines {
option.MachineName = machine.Username
option.MachineIP = machine.IP
option.BootstrapNode = i == 0
s, err := machine.SSH()
if err != nil {
return err
}
upgraded, err := kubeadm.UpgradeNode(s, client, p.PlatformClient, logger, c, option)
if err != nil {
return err
}
if i == len(c.Spec.Machines)-1 && upgraded {
var labelValue string
if c.Spec.Features.Upgrade.Mode == platformv1.UpgradeModeAuto {
// set willUpgrade value to all worker node when upgraded all master nodes and upgrade mode is auto.
labelValue = kubeadm.WillUpgrade
}
if err := kubeadm.AddNeedUpgradeLabel(p.PlatformClient, c.Name, labelValue); err != nil {
return err
}
err = kubeadm.MarkNextUpgradeWorkerNode(client, p.PlatformClient, option.Version, c.Name)
if err != nil {
return err
}
}
}
return nil
}
func (p *Provider) EnsurePostClusterUpgradeHook(ctx context.Context, c *v1.Cluster) error {
return util.ExcuteCustomizedHook(ctx, c, platformv1.HookPostClusterUpgrade, c.Spec.Machines[:1])
}