In Swift's Combine framework, operators are used to process and transform the values emitted by publishers. Here are some of the key operators you can use with publishers in Combine:

Ice Breaking Topics

• What would you do if you woke up with the ability to teleport anywhere in the world?
• Are wars inevitable as long as humans exist?
• How often do you cook?
• What's your favorite type of cuisine or dish from another country?
• Do you expect others to respond to your messages promptly?
• In your opinion does modern life causes stress?
• Do you ever think about having kids?
• How do you handle feelings of envy or jealousy when comparing your achievements to those of others?

电线规格中的“平方”指的是导体的横截面积，通常以平方毫米 (mm²) 为单位。

横截面积是电线芯部横截面的面积。电线的横截面积越大，它可以承载的电流越多。

电线规格中使用“平方”的原因如下：

• 电流容量： 电线的横截面积直接影响其电流容量。导体横截面积越大，其电阻越低，可以承载的电流越多。
• 电压降： 较大的横截面积可以降低电线中的电压降。当电流流过电线时，会产生电压降。横截面积越大，电压降越小。
• 发热： 由于电阻较低，较大横截面积的电线产生的热量较少。
• 安全： 较大的横截面积可以提供更好的绝缘，并降低电线过热或引起火灾的风险。

常见的电线规格中，“平方”的含义示例：

• AWG 12（美国线规）：横截面积为 3.31 mm²
• AWG 14：横截面积为 2.08 mm²
• AWG 16：横截面积为 1.31 mm²

选择正确的电线规格很重要，因为它会影响电气系统的安全性和性能。电线规格应根据电气负荷、电路长度和环境条件选择。

Method 1: Edit Deployment

1. Find the deployment you want to update:

   kubectl get deployments
   

2. Edit the deployment with the updated image:

   kubectl edit deployment <deployment-name>
   

3. In the YAML file, update the image field under the spec.template.spec.containers section with the new image. For example:

   containers:
     - name: my-app
       image: my-app:latest
   

4. Save and exit the YAML file.

Ice Breaking Topics

• What's the bravest thing you have ever done?
• How important is dancing in your culture?
• How does your culture influence your understanding of the world?
• Which is better? A big party or a small gathering?
• If you had to rate your current happiness on a scale of 1-10, what would it be?
• What is the worst advice you have ever heard?
• When do you usually take your breakfast?
• What was the happiest time in your life? Why was it so happy?

Meaning:

1. Absolutely necessary or indispensable.
2. Fundamental or basic.
3. Of the utmost importance.

Hey there, tech enthusiasts! In this blog post, we'll embark on a journey to create a robust website monitoring system using the Bash shell. We'll dive into the intricacies of checking website availability, handling timeouts, and sending notifications via curl when things go awry.

1. Laying the Foundation:

   Begin by opening your favorite terminal emulator and creating a new Bash script file. We'll call it "website_monitor.sh." This script will serve as the brain of our monitoring system.

Kubernetes中Service Account的作用是什么

Kubernetes中的Service Account是一个用于访问集群API服务器的虚拟帐户，它允许应用程序和服务在没有访问集群证书或令牌的情况下进行认证和授权。Service Account的作用主要包括：

1. 身份验证（Authentication）

Service Account在创建时会自动生成一个私钥和公钥对，私钥存储在Service Account的Secret中，公钥则存储在Service Account的YAML文件中。当一个Pod或服务尝试访问集群API服务器时，它使用Service Account的私钥来生成一个签名（signature），该签名与Service Account的公钥一起发送给集群API服务器。集群API服务器验证签名后，如果签名有效，则允许Pod或服务访问集群API服务器。

Ice Breaking Topics

• What games do children play in your country?
• What's the best concert or live performance you've ever attended?
• What is your favorite type of sandwich, and what would you name it if it were on a menu?
• What are the two things you'd like to ask your pet?
• How important is appearance of a person?
• What would you do if you could read other people's minds?
• Who normally does the cooking in your home?
• Which would you rather have: $1,000,000 today or 1 cent doubled every day for 30 days?

适用于 MicroK8s 版本 1.23 或更高版本

MicroK8s 1.23 及更高版本为每个镜像注册表使用单独的 hosts.toml 文件。对于 docker.io，可以在 /var/snap/microk8s/current/args/certs.d/docker.io/hosts.toml 中找到它。

编辑该文件，使其内容看起来像这样：

# /var/snap/microk8s/current/args/certs.d/docker.io/hosts.toml
server = "https://my.registry.internal:5000"

[host."my.registry.internal:5000"]
capabilities = ["pull", "resolve"]

然后，重新启动 MicroK8s：

microk8s stop
microk8s start