# k6壓力測試工具介紹 ###### tags: `共用` ## 一、安裝 * Ubuntu ``` sudo gpg --no-default-keyring --keyring /usr/share/keyrings/k6-archive-keyring.gpg --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys C5AD17C747E3415A3642D57D77C6C491D6AC1D69 echo "deb [signed-by=/usr/share/keyrings/k6-archive-keyring.gpg] https://dl.k6.io/deb stable main" | sudo tee /etc/apt/sources.list.d/k6.list sudo apt-get update sudo apt-get install k6 ``` * MacOS ``` brew install k6 ``` * Windows 安裝檔連結 https://dl.k6.io/msi/k6-latest-amd64.msi * 確認是否安裝成功 ``` k6 version ``` ## 二、建立腳本並啟動 1. 在專案中建立一個`script.js`檔案 2. 在檔案中加入以下程式 ``` // script.js import http from 'k6/http'; import { sleep } from 'k6'; export default function () { http.get('https://test.k6.io'); sleep(1); } ``` 3. 執行測試腳本 `k6 run script.js`  結果會直接呈現在terminal中 ## 三、 使用k6 Cloud產生可視化數據 1. 官網連結 https://k6.io/cloud/ `k6 run -o cloud script.js` 2. 使用Google、Github等方式創建帳號並登入k6 Cloud  3. 透過CLI登入 `k6 login cloud` 輸入創建k6 Cloud時的帳號/密碼即可登入 4. 開始測試,並將結果上傳k6 Cloud `k6 run -o cloud script.js`  5. 複製output欄位url,即可進入k6 Cloud觀看即時的測試數據  ## 四、 測試參數調整 ### Options 透過 Options 可以修改與測試執行過程有關的參數, 例如:每秒最大的請求數(RPS)、測試要執行幾次(Iterations)、執行多久(Duration)等等… 官方文件 https://k6.io/docs/using-k6/k6-options/reference/ ### Threshold Threshold 可以為測試程式加上門檻值,例如:平均回應時間 < 300 ms、請求失敗比率 < 1%等等…
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