使用华为云API创建相应的云服务

2022-05-20

一、华为云IAM认证鉴权及服务API调用在《定时开关华为公有云虚拟机方法总结》篇幅中有提过，通过apiexplorer可以很方便的进行应用创建调用。不过有些云服务还没有上线apiexplorer，这时候就需要通过原始的API进行调用了。比如在香港站点Functiongraph开通……

Kubernetes Secrets deploy MySQL

2022-05-20

| Docker/k8s/etcd

Secrets Use Case: Assume we are planning to deploy a MySQL Pod in the Kubernetes cluster. MySQL requires much sensitive information such as host IP address, database name, username, and password. We can create a Pod for MySQL using the mentioned information as a Kubernetes Deployment definition file. In this scenario, the configuration information such as username, password, database name is tightly coupled with the Pod definition. And they are easily visible to all developers who had access to the Pod definition file. In this approach, we are facing two problems. 1. The sensitive information is tightly coupled with Pod and we can not re-use them( means each time we have to type the credentials separately). And updating the credentials is also a tedious task. Why because we need to change the information in each definition file. This approach is……

企业应用容器化改造方式

2022-05-17

| Docker/k8s/etcd

应公司要求，我把企业容器化的方式在medium上进行了发布。这里列下最初的原始中文版。应用容器化改造，一般有以下三种方式：方式一：单体应用整体容器化，应用代码和架构不做任何改动。方式二：将应用中升级频繁，或对弹性伸缩要求高的组件拆分出来，将这部分组件容器化。方式三：将应用做全面的……

定时开关华为公有云虚拟机方法总结

2022-05-14

| 虚拟化云和自动化

一些应用会有明显的波峰波谷，这可以通过使用弹性伸缩（Auto Scaling）云服务或者使用CCE里的as插件来实现服务的弹性伸缩，不过在实际进行项目支持的时候，会遇到有些企业只想定时开关机（关机后，在按需付费模式下只收取硬盘费用，内存和计算资源得到释放，不计费），而不是通过AS服……

主流云厂商用户认证服务对比

2022-05-13

| 虚拟化云和自动化

一、云用户认证概述一个常识性的问题是，你要买云服务，得先开通一个云平台的帐号，如果是一个企业，会涉及很多员工登录，这时候就出现了主帐号和IAM（主流叫法）、RAM（阿里云叫法）帐号，这个逻辑很容易理解，不过如果你还单纯的以为云厂商只在云平台上建几个云帐号就完了，那你有out了，云……

数据仓库和数据湖的区别

2022-05-01

| 大数据/AI/ML

一、数仓和数据湖的区别 1. 数据内容区别数据仓库：处理结构化数据；数据湖：处理结构化、半结构化、非结构化和原始二进制数据。 2. 成本数据仓库利用数据库来存储结构化数据层，这可能很昂贵。数据湖将数据存储在低成本设备中。 3. 数据处理过程数据仓库对数据执行提取-转换-加载 (ETL Extract-Tra……

Simple WordPress Auto-deployment using GitLab CI/CD

2022-04-20

| 协同敏捷自动化

While researching WordPress auto-deployment techniques, I found plenty of guides written for particular hosting platforms, or involving Docker containers and Kubernetes. As a result, I put together this guide as a light-weight and simple approach for configuring WordPress auto-deployment with GitLab CI/CD. Summary GitLab is configured to open an SSH connection into the destination server, and install WordPress Core and plugins using WP CLI. Custom code is then copied to the destination server and build commands are executed (e.g. npm install) to compile any frontend assets. GitLab will SSH into the destination server, install WordPress, and copy in any custom code/themes. Existing Posts and settings in the WordPress database are not modified, and neither are files within wp-content/uploads. This process deploys code only. Requirements Aside from frontend build tools (e.g. npm and composer), the only backend dependency required on the……