执行kubectl apply --validate=false -f https://github.com/jetstack/cert-manager/releases/download/v1.0.4/cert-manager.crds.yaml时报错:Unable to connect to the server: x509: certificate signed by unknown authority应该怎么处理

这个错误是因为你的 Kubernetes 集群无法验证证书颁发机构（CA）签名的证书。解决此问题的方法是将证书添加到 Kubernetes 集群的信任证书列表中。

你可以通过以下步骤解决这个问题：

1. 下载证书：`curl -LO https://github.com/jetstack/cert-manager/releases/download/v1.0.4/cert-manager.crds.yaml`

2. 从 Kubernetes 集群中获取当前使用的 CA 证书：`kubectl config view --raw --minify --flatten -o jsonpath='{.clusters[].cluster.certificate-authority-data}'`

3. 将第 2 步中获取到的 CA 证书内容添加到第 1 步中下载的证书中：`cat cert-manager.crds.yaml | sed "s/caBundle:.*$/caBundle: $(cat ca.crt | base64 | tr -d '\n')/g" > cert-manager.crds-with-ca.yaml`

4. 应用更新后的证书：`kubectl apply --validate=false -f cert-manager.crds-with-ca.yaml`

这样，你就可以成功应用 cert-manager CRDs 了。

相关问题

github.com/go-playground/validator/v10 验证非结构体字段

`github.com/go-playground/validator/v10` 是 Go 语言的一个第三方库，主要用于结构体字段的验证。然而，有时候我们可能需要验证非结构体字段，例如，验证一个变量是否符合特定的规则。

要验证非结构体字段，可以使用 validator 库提供的 `Var` 函数，配合使用验证器的上下文（ValidatorCtx），你可以手动定义需要验证的变量和相应的规则。

下面是一个简单的例子：

package main

import (
	"fmt"
	"github.com/go-playground/validator/v10"
)

func main() {
	var validate = validator.New()

	// 假设我们要验证一个字符串是否满足特定的邮箱格式
	email := "example@example.com"

	// 使用ValidateVar函数进行验证，第一个参数是要验证的变量，第二个参数是验证规则
	// "email" 表示要使用email的验证规则
	err := validate.Var(email, "email")
	if err != nil {
		fmt.Println(err)
		return
	}

	fmt.Println("验证成功")
}

在上面的代码中，我们使用了 `Var` 函数来验证一个变量 `email` 是否符合邮箱的格式。通过传入 "email" 作为规则参数，`validator` 将检查该字符串是否是一个有效的邮箱地址。

unable to access 'https://github.com/Cancerhjh/tmall_springboot.git/': SSL certificate problem: unable to get local issuer certificate

This error message indicates that there is an issue with the SSL certificate for the GitHub repository you are trying to access. The SSL certificate is used to establish a secure connection between your computer and the GitHub server.

There are a few possible reasons why you might be encountering this error:

1. The SSL certificate may be expired or invalid.
2. Your computer's clock may be set incorrectly, causing the SSL certificate to appear as expired.
3. Your computer may not have the necessary root certificates installed to validate the GitHub SSL certificate.

To resolve this issue, you can try the following steps:

1. Ensure that your computer's clock is set correctly.
2. Install the latest updates for your operating system and web browser.
3. Try accessing the GitHub repository using a different web browser.
4. Install the latest version of Git on your computer.
5. Add the following line to your Git configuration file:

[http]
sslVerify = false

Note: This option disables SSL certificate validation, which can be a security risk.

If none of these steps resolve the issue, you may need to contact GitHub support for further assistance.