# 安装Nginx
apt update
apt install nginx -y

# 配置Nginx负载均衡
cat > /etc/nginx/conf.d/tomcat_loadbalance.conf << EOF upstream tomcat_servers { # 轮询算法 # server 192.168.1.10:8080; # server 192.168.1.11:8080; # server 192.168.1.12:8080; # 加权轮询算法 server 192.168.1.10:8080 weight=3; server 192.168.1.11:8080 weight=2; server 192.168.1.12:8080 weight=1; # IP哈希算法 # ip_hash; # 最少连接算法 # least_conn; } server { listen 80; server_name fgedu.net.cn; location / { proxy_pass http://tomcat_servers; 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; # 会话保持 proxy_cookie_path / " /; path=/; HttpOnly; Secure"; # 健康检查 proxy_connect_timeout 3s; proxy_read_timeout 5s; proxy_send_timeout 3s; } } EOF # 检查Nginx配置 nginx -t # 重启Nginx服务 systemctl restart nginx # 配置Tomcat节点 # 确保所有Tomcat节点的应用部署相同 # 测试负载均衡 for i in {1..10}; do curl -s http://fgedu.net.cn | grep "Server" done # 输出示例： Server: Apache-Coyote/1.1 Server: Apache-Coyote/1.1 Server: Apache-Coyote/1.1 Server: Apache-Coyote/1.1 Server: Apache-Coyote/1.1 Server: Apache-Coyote/1.1 Server: Apache-Coyote/1.1 Server: Apache-Coyote/1.1 Server: Apache-Coyote/1.1 Server: Apache-Coyote/1.1 # 检查Tomcat日志，确认请求分发 # tail -f /Tomcat/app/logs/access_log.*

# 安装Apache
apt update
apt install apache2 -y

# 启用必要的模块
a2enmod proxy proxy_http proxy_balancer lbmethod_byrequests

# 配置Apache负载均衡
cat > /etc/apache2/sites-available/tomcat_loadbalance.conf << EOF
ServerName fgedu.net.cn

BalancerMember http://192.168.1.10:8080 loadfactor=3
BalancerMember http://192.168.1.11:8080 loadfactor=2
BalancerMember http://192.168.1.12:8080 loadfactor=1

# 负载均衡算法
# lbmethod=byrequests (默认)
# lbmethod=bytraffic
# lbmethod=bybusyness

# 会话保持
# ProxySet stickysession=JSESSIONID

ProxyPass “balancer://tomcat_servers/”
ProxyPassReverse “balancer://tomcat_servers/”
RequestHeader set X-Forwarded-Proto “http”
RequestHeader set X-Forwarded-For “%{REMOTE_ADDR}s”

# 负载均衡状态页面

SetHandler balancer-manager
Require ip 192.168.1.0/24

ErrorLog ${APACHE_LOG_DIR}/tomcat_loadbalance_error.log
CustomLog ${APACHE_LOG_DIR}/tomcat_loadbalance_access.log combined

EOF

# 启用站点
a2ensite tomcat_loadbalance.conf
a2dissite 000-default.conf

# 检查Apache配置
a apache2ctl configtest

# 重启Apache服务
systemctl restart apache2

# 测试负载均衡
for i in {1..10}; do
curl -s http://fgedu.net.cn | grep “Server”
done

# 访问负载均衡状态页面
# http://fgedu.net.cn/balancer-manager

# 使用Ansible自动部署新节点
# 创建Ansible playbook
cat > deploy_tomcat_node.yml << EOF --- - hosts: new_nodes become: yes tasks: - name: Install Java apt: name: openjdk-11-jdk state: present - name: Create Tomcat directory file: path: /Tomcat/app state: directory - name: Download Tomcat get_url: url: https://archive.apache.org/dist/tomcat/tomcat-11/v11.0.8/bin/apache-tomcat-11.0.8.tar.gz dest: /tmp/apache-tomcat-11.0.8.tar.gz - name: Extract Tomcat unarchive: src: /tmp/apache-tomcat-11.0.8.tar.gz dest: /Tomcat/app remote_src: yes - name: Create symlink file: src: /Tomcat/app/apache-tomcat-11.0.8 dest: /Tomcat/app/latest state: link - name: Deploy application copy: src: /path/to/application.war dest: /Tomcat/app/latest/webapps/ - name: Start Tomcat shell: /Tomcat/app/latest/bin/startup.sh EOF # 执行Ansible playbook ansible-playbook -i inventory.ini deploy_tomcat_node.yml # 自动更新Nginx配置 cat > update_nginx_config.sh << EOF #!/bin/bash # update_nginx_config.sh # from:www.itpux.com.qq113257174.wx:itpux-com # web: `http://www.fgedu.net.cn` # 新节点IP NEW_NODE_IP=$1 # 备份原配置 cp /etc/nginx/conf.d/tomcat_loadbalance.conf /etc/nginx/conf.d/tomcat_loadbalance.conf.bak # 更新配置 sed -i "/upstream tomcat_servers {/a \ server $NEW_NODE_IP:8080 weight=1;" /etc/nginx/conf.d/tomcat_loadbalance.conf # 检查配置 nginx -t # 重载配置 nginx -s reload # 输出结果 echo "Added new node $NEW_NODE_IP to Nginx load balance configuration" EOF # 运行更新脚本 chmod +x update_nginx_config.sh ./update_nginx_config.sh 192.168.1.13 # 测试新节点 curl http://fgedu.net.cn # 检查Nginx配置 cat /etc/nginx/conf.d/tomcat_loadbalance.conf # 输出示例： upstream tomcat_servers { # 加权轮询算法 server 192.168.1.10:8080 weight=3; server 192.168.1.11:8080 weight=2; server 192.168.1.12:8080 weight=1; server 192.168.1.13:8080 weight=1; } server { listen 80; server_name fgedu.net.cn; location / { proxy_pass http://tomcat_servers; 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; # 会话保持 proxy_cookie_path / " /; path=/; HttpOnly; Secure"; # 健康检查 proxy_connect_timeout 3s; proxy_read_timeout 5s; proxy_send_timeout 3s; } }

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