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scale.go
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scale.go
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// Copyright © 2021 Alibaba Group Holding Ltd.
//
// 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,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package processor
import (
"context"
"fmt"
"golang.org/x/sync/errgroup"
"github.com/labring/sealos/pkg/bootstrap"
"github.com/labring/sealos/pkg/buildah"
"github.com/labring/sealos/pkg/checker"
"github.com/labring/sealos/pkg/clusterfile"
"github.com/labring/sealos/pkg/config"
"github.com/labring/sealos/pkg/constants"
"github.com/labring/sealos/pkg/filesystem/rootfs"
"github.com/labring/sealos/pkg/runtime"
v2 "github.com/labring/sealos/pkg/types/v1beta1"
fileutil "github.com/labring/sealos/pkg/utils/file"
"github.com/labring/sealos/pkg/utils/logger"
"github.com/labring/sealos/pkg/utils/yaml"
)
type ScaleProcessor struct {
ClusterFile clusterfile.Interface
Runtime runtime.Interface
Buildah buildah.Interface
pullImages []string
MastersToJoin []string
MastersToDelete []string
NodesToJoin []string
NodesToDelete []string
IsScaleUp bool
}
func (c *ScaleProcessor) Execute(cluster *v2.Cluster) error {
pipLine, err := c.GetPipeLine()
if err != nil {
return err
}
for _, f := range pipLine {
if err = f(cluster); err != nil {
return err
}
}
return nil
}
func (c *ScaleProcessor) GetPipeLine() ([]func(cluster *v2.Cluster) error, error) {
var todoList []func(cluster *v2.Cluster) error
if c.IsScaleUp {
todoList = append(todoList,
c.JoinCheck,
c.PreProcess,
c.PreProcessImage,
c.RunConfig,
c.MountRootfs,
c.Bootstrap,
//s.GetPhasePluginFunc(plugin.PhasePreJoin),
c.Join,
//s.GetPhasePluginFunc(plugin.PhasePostJoin),
)
return todoList, nil
}
todoList = append(todoList,
c.DeleteCheck,
c.PreProcess,
c.Delete,
c.UndoBootstrap,
//c.ApplyCleanPlugin,
c.UnMountRootfs,
)
return todoList, nil
}
func (c *ScaleProcessor) Delete(cluster *v2.Cluster) error {
logger.Info("Executing pipeline Delete in ScaleProcessor.")
err := c.Runtime.DeleteMasters(c.MastersToDelete)
if err != nil {
return err
}
if err = c.Runtime.DeleteNodes(c.NodesToDelete); err != nil {
return err
}
if len(c.MastersToDelete) > 0 {
return c.Runtime.SyncNodeIPVS(cluster.GetMasterIPAndPortList(), cluster.GetNodeIPAndPortList())
}
return nil
}
func (c *ScaleProcessor) Join(cluster *v2.Cluster) error {
logger.Info("Executing pipeline Join in ScaleProcessor.")
err := c.Runtime.JoinMasters(c.MastersToJoin)
if err != nil {
return err
}
err = c.Runtime.JoinNodes(c.NodesToJoin)
if err != nil {
return err
}
if len(c.MastersToJoin) > 0 {
return c.Runtime.SyncNodeIPVS(cluster.GetMasterIPAndPortList(), cluster.GetNodeIPAndPortList())
}
return c.Runtime.SyncNodeIPVS(cluster.GetMasterIPAndPortList(), c.NodesToJoin)
}
func (c ScaleProcessor) UnMountRootfs(cluster *v2.Cluster) error {
logger.Info("Executing pipeline UnMountRootfs in ScaleProcessor.")
hosts := append(c.MastersToDelete, c.NodesToDelete...)
if cluster.Status.Mounts == nil {
logger.Warn("delete process unmount rootfs skip is cluster not mount rootfs")
return nil
}
fs, err := rootfs.NewRootfsMounter(cluster.Status.Mounts)
if err != nil {
return err
}
return fs.UnMountRootfs(c.ClusterFile.GetCluster(), hosts)
}
func (c *ScaleProcessor) JoinCheck(cluster *v2.Cluster) error {
logger.Info("Executing pipeline JoinCheck in ScaleProcessor.")
var ips []string
ips = append(ips, cluster.GetMaster0IPAndPort())
ips = append(ips, c.MastersToJoin...)
ips = append(ips, c.NodesToJoin...)
return NewCheckError(checker.RunCheckList([]checker.Interface{checker.NewIPsHostChecker(ips)}, cluster, checker.PhasePre))
}
func (c *ScaleProcessor) DeleteCheck(cluster *v2.Cluster) error {
logger.Info("Executing pipeline DeleteCheck in ScaleProcessor.")
var ips []string
ips = append(ips, cluster.GetMaster0IPAndPort())
//ips = append(ips, c.MastersToDelete...)
//ips = append(ips, c.NodesToDelete...)
return NewCheckError(checker.RunCheckList([]checker.Interface{checker.NewIPsHostChecker(ips)}, cluster, checker.PhasePre))
}
func (c *ScaleProcessor) PreProcess(cluster *v2.Cluster) error {
return NewPreProcessError(c.preProcess(cluster))
}
func (c *ScaleProcessor) preProcess(cluster *v2.Cluster) error {
logger.Info("Executing pipeline PreProcess in ScaleProcessor.")
err := c.ClusterFile.Process()
if err != nil {
return err
}
if c.IsScaleUp {
// cluster status might be overwrite by inappropriate usage, add mounts if loss.
if err = MountClusterImages(c.Buildah, cluster, true); err != nil {
return err
}
if cluster.GetRootfsImage().KubeVersion() == "" {
return fmt.Errorf("rootfs image not found kube version")
}
clusterPath := constants.Clusterfile(cluster.Name)
obj := []interface{}{cluster}
if configs := c.ClusterFile.GetConfigs(); len(configs) > 0 {
for i := range configs {
obj = append(obj, configs[i])
}
}
if err = yaml.MarshalYamlToFile(clusterPath, obj...); err != nil {
return err
}
}
if err = SyncClusterStatus(cluster, c.Buildah, false); err != nil {
return err
}
var rt runtime.Interface
if c.IsScaleUp {
rt, err = runtime.NewDefaultRuntimeWithCurrentCluster(cluster, c.ClusterFile.GetKubeadmConfig())
} else {
rt, err = runtime.NewDefaultRuntimeWithCurrentCluster(c.ClusterFile.GetCluster(), c.ClusterFile.GetKubeadmConfig())
}
if err != nil {
return fmt.Errorf("failed to init runtime: %v", err)
}
c.Runtime = rt
return err
}
func (c *ScaleProcessor) PreProcessImage(cluster *v2.Cluster) error {
logger.Info("Executing pipeline PreProcessImage in ScaleProcessor.")
for i, mount := range cluster.Status.Mounts {
if mount.Type == v2.AppImage {
continue
}
dirs, _ := fileutil.GetAllSubDirs(mount.MountPoint)
if len(dirs) == 0 {
clusterManifest, err := c.Buildah.Create(mount.Name, mount.ImageName)
if err != nil {
return err
}
mount.Name = clusterManifest.Container
mount.MountPoint = clusterManifest.MountPoint
cluster.Status.Mounts[i] = mount
}
}
return nil
}
func (c *ScaleProcessor) RunConfig(cluster *v2.Cluster) error {
logger.Info("Executing pipeline RunConfig in ScaleProcessor.")
eg, _ := errgroup.WithContext(context.Background())
for _, cManifest := range cluster.Status.Mounts {
manifest := cManifest
eg.Go(func() error {
cfg := config.NewConfiguration(manifest.ImageName, manifest.MountPoint, c.ClusterFile.GetConfigs())
return cfg.Dump()
})
}
return eg.Wait()
}
func (c *ScaleProcessor) MountRootfs(cluster *v2.Cluster) error {
logger.Info("Executing pipeline MountRootfs in ScaleProcessor.")
hosts := append(c.MastersToJoin, c.NodesToJoin...)
// since app type images are only sent to the first master, in
// cluster scaling scenario we don't need to sent app images repeatedly.
// so filter out rootfs/patch type
fs, err := rootfs.NewRootfsMounter(filterNoneApplicationMounts(cluster.Status.Mounts))
if err != nil {
return err
}
return fs.MountRootfs(cluster, hosts)
}
func filterNoneApplicationMounts(images []v2.MountImage) []v2.MountImage {
ret := make([]v2.MountImage, 0)
for i := range images {
if images[i].Type != v2.AppImage {
ret = append(ret, images[i])
}
}
return ret
}
func (c *ScaleProcessor) Bootstrap(cluster *v2.Cluster) error {
logger.Info("Executing pipeline Bootstrap in ScaleProcessor")
hosts := append(c.MastersToJoin, c.NodesToJoin...)
bs := bootstrap.New(cluster)
return bs.Apply(hosts...)
}
func (c *ScaleProcessor) UndoBootstrap(_ *v2.Cluster) error {
logger.Info("Executing pipeline UndoBootstrap in ScaleProcessor")
hosts := append(c.MastersToDelete, c.NodesToDelete...)
bs := bootstrap.New(c.ClusterFile.GetCluster())
return bs.Delete(hosts...)
}
func NewScaleProcessor(clusterFile clusterfile.Interface, name string, images v2.ImageList, masterToJoin, masterToDelete, nodeToJoin, nodeToDelete []string) (Interface, error) {
bder, err := buildah.New(name)
if err != nil {
return nil, err
}
return &ScaleProcessor{
MastersToDelete: masterToDelete,
MastersToJoin: masterToJoin,
NodesToDelete: nodeToDelete,
NodesToJoin: nodeToJoin,
ClusterFile: clusterFile,
Buildah: bder,
pullImages: images,
IsScaleUp: len(masterToJoin) > 0 || len(nodeToJoin) > 0,
}, nil
}