前置配置 - _config.yml

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# 运行 hexo generate 命令时，相关文件的输出目录
public_dir: build

# 运行 hexo deploy 命令时，文件部署的目标地址
deploy:
  type: git
  repo: git@github.com:fangqk1991/fangqk1991.github.io.git
  branch: master

SSH Key 准备

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# 生成用于 hexo 发布的密钥对
ssh-keygen -t rsa -f ~/.ssh/hexo

cat ~/.ssh/hexo
# https://github.com/fangqk1991/github-blog
# 网页访问 GitHub 相关项目 - Settings - Secrets - Actions - New repository secret
# 创建 Name 为 HEXO_DEPLOY_PRI 的私钥
# 将 cat ~/.ssh/hexo 返回的内容作为私钥的 Value 

cat ~/.ssh/hexo.pub
# https://github.com/fangqk1991/fangqk1991.github.io
# 网页访问 GitHub 相关项目 - Settings - Deploy keys - Add deploy key
# 创建 Name 为 HEXO_DEPLOY_PUB 的公钥
# 将 cat ~/.ssh/hexo.pub 返回的内容作为私钥的 Value

##### 如需将博客文件发布到私有服务器
# 将 hexo.pub 公钥信息添加到目标服务器 ~/.ssh/authorized_keys 中
cat ~/.ssh/hexo.pub | ssh some_user@example.com "cat >> ~/.ssh/authorized_keys"

添加 .github/workflows/deploy.yml

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name: CI

on:
  push:
    branches:
      - master

env:
  GIT_USER: fangqk1991
  GIT_EMAIL: me@fangqk.com
  THEME_REPO: fangqk1991/maupassant-hexo
  THEME_BRANCH: master
  DEPLOY_REPO: fangqk1991/fangqk1991.github.io
  DEPLOY_BRANCH: master
  # Using for "Deploy to a server"
  SERVER_USER: some_user
  SERVER_HOST: example.com
  SERVER_PATH: /some/path

jobs:
  build:
    name: Build on node ${{ matrix.node_version }} and ${{ matrix.os }}
    runs-on: ubuntu-latest
    strategy:
      matrix:
        os: [ubuntu-latest]
        node_version: [12.x]

    steps:
      - name: Checkout
        uses: actions/checkout@v3

      # Download Hexo theme
      - name: Checkout theme repo
        uses: actions/checkout@v3
        with:
          repository: ${{ env.THEME_REPO }}
          ref: ${{ env.THEME_BRANCH }}
          path: themes/maupassant-hexo

      - name: Checkout deploy repo
        uses: actions/checkout@v3
        with:
          repository: ${{ env.DEPLOY_REPO }}
          ref: ${{ env.DEPLOY_BRANCH }}
          path: .deploy_git
          ssh-key: ${{secrets.HEXO_DEPLOY_PRI}}

      - name: Use Node.js ${{ matrix.node_version }}
        uses: actions/setup-node@v1
        with:
          node-version: ${{ matrix.node_version }}

      # Prepare SSH Key and target hosts
      - name: Configuration environment
        env:
          HEXO_DEPLOY_PRI: ${{secrets.HEXO_DEPLOY_PRI}}
        run: |
          sudo timedatectl set-timezone "Asia/Shanghai"
          mkdir -p ~/.ssh/
          echo "$HEXO_DEPLOY_PRI" > ~/.ssh/id_rsa
          chmod 600 ~/.ssh/id_rsa
          ssh-keyscan github.com >> ~/.ssh/known_hosts
          git config --global user.name $GIT_USER
          git config --global user.email $GIT_EMAIL

      - name: Build Hexo
        run: |
          yarn install
          npx hexo generate
          echo fangqk.com > build/CNAME

      - name: Deploy to GitHub
        run: |
          npx hexo deploy

      - name: Deploy to a server
        run: |
          ssh-keyscan ${SERVER_HOST} >> ~/.ssh/known_hosts
          rsync -avz --delete --progress ./build/ ${SERVER_USER}@${SERVER_HOST}:${SERVER_PATH}