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cluster_checker.go
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/
cluster_checker.go
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// Copyright © 2021 cuisongliu@qq.com.
//
// 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 checker
// nosemgrep: go.lang.security.audit.xss.import-text-template.import-text-template
import (
"context"
"errors"
"os"
"time"
v1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"github.com/labring/sealos/pkg/client-go/kubernetes"
"github.com/labring/sealos/pkg/constants"
"github.com/labring/sealos/pkg/template"
v2 "github.com/labring/sealos/pkg/types/v1beta1"
"github.com/labring/sealos/pkg/utils/logger"
)
type ClusterChecker struct {
}
type ClusterStatus struct {
IP string
Node string
KubeAPIServer string
KubeControllerManager string
KubeScheduler string
KubeletErr string
}
func (n *ClusterChecker) Check(cluster *v2.Cluster, phase string) error {
if phase != PhasePost {
return nil
}
// checker if all the node is ready
data := constants.NewPathResolver(cluster.Name)
c, err := kubernetes.NewKubernetesClient(data.AdminFile(), "")
if err != nil {
return err
}
ke := kubernetes.NewKubeExpansion(c.Kubernetes())
nodes, err := c.Kubernetes().CoreV1().Nodes().List(context.Background(), v1.ListOptions{})
if err != nil {
return err
}
healthyClient := kubernetes.NewKubeHealthy(c.Kubernetes(), 30*time.Second)
var NodeList []ClusterStatus
ctx := context.Background()
for _, node := range nodes.Items {
ip, _ := getNodeStatus(node)
cStatus := ClusterStatus{
IP: ip,
Node: node.Name,
}
apiPod, err := ke.FetchStaticPod(ctx, node.Name, kubernetes.KubeAPIServer)
if err != nil {
return err
}
cStatus.KubeAPIServer = healthyClient.ForHealthyPod(apiPod)
controllerPod, err := ke.FetchStaticPod(ctx, node.Name, kubernetes.KubeControllerManager)
if err != nil {
return err
}
cStatus.KubeControllerManager = healthyClient.ForHealthyPod(controllerPod)
schedulerPod, err := ke.FetchStaticPod(ctx, node.Name, kubernetes.KubeScheduler)
if err != nil {
return err
}
cStatus.KubeScheduler = healthyClient.ForHealthyPod(schedulerPod)
if err = healthyClient.ForHealthyKubelet(5*time.Second, ip); err != nil {
cStatus.KubeletErr = err.Error()
} else {
cStatus.KubeletErr = Nil
}
NodeList = append(NodeList, cStatus)
}
return n.Output(NodeList)
}
func (n *ClusterChecker) Output(clusterStatus []ClusterStatus) error {
tpl, isOk, err := template.TryParse(`
Cluster Status
Node List:
{{- range .ClusterStatusList }}
NodeName: {{ .Node }}
NodeIP: {{ .IP }}
KubeAPIServer: {{ .KubeAPIServer }}
KubeControllerManager: {{ .KubeControllerManager }}
KubeScheduler: {{ .KubeScheduler }}
KubeletErr: {{.KubeletErr}}
{{- end }}
`)
if err != nil || !isOk {
if err != nil {
logger.Error("failed to render cluster checkers template. error: %s", err.Error())
return err
}
return errors.New("convert cluster template failed")
}
return tpl.Execute(os.Stdout, map[string][]ClusterStatus{"ClusterStatusList": clusterStatus})
}
func NewClusterChecker() Interface {
return &ClusterChecker{}
}