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node_checker.go
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/
node_checker.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 checker
import (
"context"
"errors"
"os"
corev1 "k8s.io/api/core/v1"
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"
)
const (
ReadyNodeStatus = "Ready"
NotReadyNodeStatus = "NotReady"
)
type NodeChecker struct {
}
type NodeClusterStatus struct {
ReadyCount uint32
NotReadyCount uint32
NodeCount uint32
NotReadyNodeList []string
}
func (n *NodeChecker) 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
}
nodes, err := c.Kubernetes().CoreV1().Nodes().List(context.Background(), v1.ListOptions{})
if err != nil {
return err
}
var notReadyNodeList []string
var readyCount uint32
var nodeCount uint32
var notReadyCount uint32
for _, node := range nodes.Items {
nodeIP, nodePhase := getNodeStatus(node)
if nodePhase != ReadyNodeStatus {
notReadyCount++
notReadyNodeList = append(notReadyNodeList, nodeIP)
} else {
readyCount++
}
}
nodeCount = notReadyCount + readyCount
nodeClusterStatus := NodeClusterStatus{
ReadyCount: readyCount,
NotReadyCount: notReadyCount,
NodeCount: nodeCount,
NotReadyNodeList: notReadyNodeList,
}
return n.Output(nodeClusterStatus)
}
func (n *NodeChecker) Output(nodeCLusterStatus NodeClusterStatus) error {
tpl, isOk, err := template.TryParse(`
Cluster Node Status
ReadyNode: {{ .ReadyCount }}/{{ .NodeCount }}
{{ if (gt .NotReadyCount 0 ) -}}
Not Ready Node List:
{{- range .NotReadyNodeList }}
NodeIP: {{ . }}
{{- end }}
{{ end }}
`)
if err != nil || !isOk {
if err != nil {
logger.Error("failed to render node checkers template. error: %s", err.Error())
return err
}
return errors.New("convert node template failed")
}
return tpl.Execute(os.Stdout, nodeCLusterStatus)
}
func getNodeStatus(node corev1.Node) (IP string, Phase string) {
if len(node.Status.Addresses) < 1 {
return "", ""
}
for _, address := range node.Status.Addresses {
if address.Type == "InternalIP" {
IP = address.Address
}
}
if IP == "" {
IP = node.Status.Addresses[0].Address
}
Phase = NotReadyNodeStatus
for _, condition := range node.Status.Conditions {
if condition.Type == ReadyNodeStatus {
if condition.Status == "True" {
Phase = ReadyNodeStatus
} else {
Phase = NotReadyNodeStatus
}
}
}
return IP, Phase
}
func NewNodeChecker() Interface {
return &NodeChecker{}
}