1. 环境
(1) Rocky Linux 9.1
(2) Git 2.39.3
(3) Jenkins 2.401.2
2. 硬件要求
(1) 底线要求
内存：256 MB
硬盘：1 GB
(2) 推荐要求
内存：4 GB
硬盘：50 GB
1. 依赖
(1) OpenJDK
(2) Git
sudo dnf install git -y git --version
(3) Maven
https://www.cnblogs.com/eagle6688/p/17519572.html
(4) 仓库
sudo wget -O /etc/yum.repos.d/jenkins.repo https://pkg.jenkins.io/redhat-stable/jenkins.repo sudo rpm --import https://pkg.jenkins.io/redhat-stable/jenkins.io-2023.key sudo yum upgrade -y
2. 安装
sudo dnf install jenkins -y
3. 安装后
(1) 服务
sudo systemctl daemon-reload sudo systemctl enable jenkins sudo systemctl start jenkins systemctl status jenkins
(2) 防火墙
如果需要立即通过端口号访问Jenkins，则可以通过以下配置实现：
sudo firewall-cmd --permanent --add-port=8080/tcp sudo firewall-cmd --reload
4. HTTPS
(1) 生成证书和密钥
https://www.cnblogs.com/eagle6688/p/16974768.html
sudo mkdir -p /etc/ssl/private sudo mv jenkins.example.com.crt.pem /etc/ssl/certs sudo mv jenkins.example.com.key.pem /etc/ssl/private
(2) 创建日志目录
sudo mkdir -p /var/log/nginx/jenkins
(3) Nginx配置
a. 创建配置文件
sudo vi /etc/nginx/conf.d/jenkins.conf
b. 初始化
upstream jenkins { keepalive 32; # keepalive connections server 127.0.0.1:8080; # jenkins ip and port } # Required for Jenkins websocket agents map $http_upgrade $connection_upgrade { default upgrade; '' close; } server { listen 80; # Listen on port 80 for IPv4 requests server_name jenkins.example.com; rewrite ^(.*)$ https://${server_name}$1 permanent; } server { listen 443 ssl; listen [::]:443 ssl; server_name jenkins.example.com; root /var/run/jenkins/war/; access_log /var/log/nginx/jenkins.access.log; error_log /var/log/nginx/jenkins.error.log; ssl_certificate /etc/ssl/certs/jenkins.example.com.crt.pem; ssl_certificate_key /etc/ssl/private/jenkins.example.com.key.pem; ssl_session_timeout 1d; ssl_session_tickets on; ssl_protocols TLSv1.1 TLSv1.2 TLSv1.3; ssl_ciphers 'TLS13-AES-256-GCM-SHA384:TLS13-CHACHA20-POLY1305-SHA256:TLS13-AES-128-GCM-SHA256:TLS13-AES-128-CCM-8-SHA256:TLS13-AES-128-CCM-SHA256:EECDH+CHACHA20:EECDH+CHACHA20-draft:EECDH+ECDSA+AES128:EECDH+aRSA+AES128:RSA+AES128:EECDH+ECDSA+AES256:EECDH+aRSA+AES256:RSA+AES256:EECDH+ECDSA+3DES:EECDH+aRSA+3DES:RSA+3DES:!MD5'; ssl_prefer_server_ciphers on; # pass through headers from Jenkins that Nginx considers invalid ignore_invalid_headers off; location ~ "^/static/[0-9a-fA-F]{8}\/(.*)$" { rewrite "^/static/[0-9a-fA-F]{8}\/(.*)" /$1 last; } location /userContent { root /var/lib/jenkins/; if (!-f $request_filename) { rewrite (.*) /$1 last; break; } sendfile on; } location / { sendfile off; proxy_pass http://jenkins; proxy_redirect default; proxy_http_version 1.1; # Required for Jenkins websocket agents proxy_set_header Connection $connection_upgrade; proxy_set_header Upgrade $http_upgrade; proxy_set_header Host $host; proxy_set_header X-Real-IP $remote_addr; proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; proxy_set_header X-Forwarded-Proto $scheme; proxy_max_temp_file_size 0; #this is the maximum upload size client_max_body_size 10m; client_body_buffer_size 128k; proxy_connect_timeout 90; proxy_send_timeout 90; proxy_read_timeout 90; #该值控制Jenkins链接的超时时间，若Jenkins需要执行长时间的shell脚本，可适当增加该值。 proxy_buffering off; proxy_request_buffering off; # Required for HTTP CLI commands proxy_set_header Connection ""; # Clear for keepalive } }
c. 测试Nginx配置
d. 权限
sudo usermod -aG jenkins nginx #将用户nginx加入到jenkins组中
e. 重启Nginx
sudo systemctl restart nginx
5. 解锁Jenkins
(1) 获取管理员密码
sudo cat /var/lib/jenkins/secrets/initialAdminPassword
(2) 访问jenkins.example.com，填入初始密码
(3) 选择Install suggested plugins
(4) Suggested plugins列表：
(5) 创建第一个管理员账户
(6) 进入首页
1. config.xml
(1) Jenkins配置文件位于：
/var/lib/jenkins/config.xml
(2) 初始化Jenkins之后，备份配置文件，以便还原：
sudo cp /var/lib/jenkins/config.xml /var/lib/jenkins/config.xml.bak
2. LDAP
注意：配置完LDAP后，在初始化阶段创建的用户admin将无法登录。
(1) 登录Jenkins，Dashboard->Manage Jenkins->Security
(2) 在Security Realm处选择LDAP:
(3) 配置必要项目
a. Server: LDAP服务器地址；
b. root DN: dc=example,dc=com；
c. User search base: ou=people，这个与root DN合并起来就是Jenkins搜索账号的地址；
d. Manager DN: 管理员DN；
e. Manager Password: 管理员密码；
配置结束后点击右下角的Test LDAP Settings进行测试：
全部成功后点击"Save"。
3. Maven Configuration
(1) 登录后，进入Dashboard->Manage Jenkins->Tools页面：
(2) 在Maven Configuration配置节下，分别配置"Default settings provider"和"Default global settings provider"为Maven的settings.xml路径：
(3) 找到页面最下方的Maven配置节，配置Maven的安装路径
4. JDK
(1) 查询JDK安装目录
(2) 配置JDK的路径，注意此处的路径有两个要求：
a. 路径以/bin的父级目录结束；
b. bin目录中存在javac程序，这就要求安装devel版本的JDK；
5. Git
(1) 查询Git安装目录
(2) 配置Git目录
6. 构件清理
每次运行Pipeline都会产生应用包和其他一些临时文件，随着Build的次数增多，应用包和临时文件也会越积越多，这些文件很占用磁盘空间。
Jenkins提供了两个维度的自动清理功能来解决该问题，一是系统级别的配置，二是Pipeline级别的配置。
(1) 系统配置
a. 登录Jenkins，进入Dashboard->Manage Jenkins->System页面：
b. 找到"Global Build Discarders"，配置"Days to keep builds" 或 "Max # of builds to keep"
1. 官方
https://www.jenkins.io/doc/book/installing/linux/
https://www.jenkins.io/doc/book/installing/war-file/
https://www.jenkins.io/doc/book/managing/system-properties/
https://www.jenkins.io/doc/book/system-administration/reverse-proxy-configuration-nginx/
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