kubernetes preflight 源码

2022-09-18
浏览 (566)

kubernetes preflight 代码

文件路径：/cmd/kubeadm/app/cmd/phases/upgrade/node/preflight.go

/*
Copyright 2017 The Kubernetes Authors.

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 node

import (
	"fmt"

	"github.com/pkg/errors"

	utilsexec "k8s.io/utils/exec"

	"k8s.io/kubernetes/cmd/kubeadm/app/cmd/options"
	"k8s.io/kubernetes/cmd/kubeadm/app/cmd/phases/workflow"
	"k8s.io/kubernetes/cmd/kubeadm/app/preflight"
)

// NewPreflightPhase creates a kubeadm workflow phase that implements preflight checks for a new node join
func NewPreflightPhase() workflow.Phase {
	return workflow.Phase{
		Name:  "preflight",
		Short: "Run upgrade node pre-flight checks",
		Long:  "Run pre-flight checks for kubeadm upgrade node.",
		Run:   runPreflight,
		InheritFlags: []string{
			options.IgnorePreflightErrors,
		},
	}
}

// runPreflight executes preflight checks logic.
func runPreflight(c workflow.RunData) error {
	data, ok := c.(Data)
	if !ok {
		return errors.New("preflight phase invoked with an invalid data struct")
	}
	fmt.Println("[preflight] Running pre-flight checks")

	// First, check if we're root separately from the other preflight checks and fail fast
	if err := preflight.RunRootCheckOnly(data.IgnorePreflightErrors()); err != nil {
		return err
	}

	// if this is a control-plane node, pull the basic images
	if data.IsControlPlaneNode() {
		if !data.DryRun() {
			fmt.Println("[preflight] Pulling images required for setting up a Kubernetes cluster")
			fmt.Println("[preflight] This might take a minute or two, depending on the speed of your internet connection")
			fmt.Println("[preflight] You can also perform this action in beforehand using 'kubeadm config images pull'")
			if err := preflight.RunPullImagesCheck(utilsexec.New(), data.Cfg(), data.IgnorePreflightErrors()); err != nil {
				return err
			}
		} else {
			fmt.Println("[preflight] Would pull the required images (like 'kubeadm config images pull')")
		}
	} else {
		fmt.Println("[preflight] Skipping prepull. Not a control plane node.")
		return nil
	}

	return nil
}

相关信息

kubernetes 源码目录

相关文章

kubernetes controlplane 源码

kubernetes data 源码

kubernetes data_test 源码

kubernetes kubeletconfig 源码

0 赞

所属分类： 后端技术
本文标签： golang docker
版权声明： 原创文章如转载，请注明本文链接: https://www.seaxiang.com/blog/34428a3959364ec6896428dec632fa62

热门推荐

1、直接访问google.com
2、 - 优质文章
3、 gate.io
4、 harmony 鸿蒙hdc使用指导
5、 harmony 鸿蒙初识ArkTS语言
6、 harmony 鸿蒙ArkUI组件（ArkTS）开发常见问题
7、 flink kafka connector scan.startup.mode 的几个选项
8、 golang
9、 openharmony
10、 Vue中input框自动聚焦

Loading...