Azure Release Pipeline is CD
Release pipelines in Azure Pipelines help your team continuously deliver software to your customers at a faster pace and with lower risk - from MS
基本上我的認知是 CD 就是 Release 他可以做到:
- 全自動化
- 半自動化
- 中途可以有gates 去 query 某些status
- 可以有approval的機制去等待
How do release pipelines work?
Azure Pipelines runs the following steps as part of every deployment:
Pre-deployment approval: When a new deployment request is triggered, Azure Pipelines checks whether a pre-deployment approval is required before deploying a release to a stage. If it's required, it sends out email notifications to the appropriate approvers. (必須要有設定才會有這個機制)
Queue deployment job: Azure Pipelines schedules the deployment job on an available automation agent. An agent is a piece of software that can run tasks in the deployment.
- 這裡可以再切分成(後面會細談):
- serverless job (agentless job)
- agent job
- deployment group job
- 這裡可以再切分成(後面會細談):
Agent selection: An automation agent picks up the job. The agents for release pipelines are exactly the same as the agents that run your builds in Azure Pipelines. A release pipeline can contain settings to select an appropriate agent at runtime.
- 這裡可以再切分成(後面會細談):
- agent pool agent
- Self-host
- MS-host
- deployment group agent
- Self-host
- agent pool agent
- 這裡可以再切分成(後面會細談):
Download artifacts: The agent downloads all the artifacts specified in that release, provided you haven't opted to skip the download. 把所需要的東西塞進agent job or deployment group job的agent中
Run the deployment tasks: The agent then runs all the tasks in the deployment job to deploy the app to the target servers for a stage. 操作agent去run所定義的task
Generate progress logs: The agent creates detailed logs for each step while running the deployment, and pushes these logs back to Azure Pipelines.(在release pipeline 可以看到log output)
Post-deployment approval: When deployment to a stage is complete, Azure Pipelines checks if there's a post-deployment approval required for that stage. If no approval is required, or upon completion of a required approval, it proceeds to trigger deployment to the next stage.(必須要有設定才會有這個機制)
The unit in an release
Stage
1個stage可以有許多jobs
通常stage代表是一個階段
舉例來說可以是TEST/INT/STAG/PROD 或者是 RUN E2E TESTING/ DATA TRANFER / CLEAN ENV
每一個STAGE的切換都可以設定Gates OR approval 來判斷是否要繼續進行
Job
1個job可以有很多tasks
通常Job就是控制azure agent來幫你做一系列的task 可以分成
| serverless job (agentless job) | agent job | deployment group job |
|---|---|---|
| 通常會用來做 restful api的串接 或是 query某些azure workitem | 控制azure agent 做事情的job 通常會根據不同需求而選擇不同azure agent | 同樣也是控制azure agent 做事情的job 只是他是註冊成deployment group的形式 |
| -------- | 1. self-host azure agent 自己管的到且須要維護的azure agent (透過我們手動/自動安裝) | 是self-host agent的一種 |
| -------- | 2. ms-host azure agent 託管的azure agent (躺在天上讓我們去使用) | -------- |
延伸閱讀 :
1. 比較AGENT JOB 和 DEPLOYMENT JOB的差異
2. 何謂AZURE AGENT? 它可以是怎樣的形式? 他可以做到甚麼?
Task
1個task只能做一件事
task就是azure agent要做的待辦事項 可以是:
- az command
- shell script
- python
- arm task
- terraform
- 幾乎是都可以support
How do I use a release pipeline?
For example
如果喜歡這篇觀念文章 請幫我多多推推喔XD
之後希望可以在寫幾篇手把手教學XDDD
