LVS负载均衡器(nat模式)+nginx(七层反向代理)+tomcat(多实例),实现负载均衡和动静分离
以下是一个基于LVS NAT模式的负载均衡器配置示例,它使用Nginx作为反向代理,并且配置了动静分离,静态内容将通过Nginx直接提供,而动态内容则被代理到后端的Tomcat服务器。
LVS NAT模式配置(loadbalancer.conf):
# 配置虚拟IP(VIP)指向LVS的本地IP
ipvsadm -A -t 192.168.0.100:80 -s rr
# 添加真实服务器(Real Server)
ipvsadm -a -t 192.168.0.100:80 -r 192.168.0.2:80 -m
ipvsadm -a -t 192.168.0.100:80 -r 192.168.0.3:80 -m
Nginx配置(nginx.conf):
user nginx;
worker_processes auto;
events {
worker_connections 1024;
}
http {
include mime.types;
default_type application/octet-stream;
# 日志文件位置
access_log /var/log/nginx/access.log;
error_log /var/log/nginx/error.log;
# 静态文件目录
server {
listen 80;
server_name localhost;
location / {
root /usr/share/nginx/html;
index index.html index.htm;
}
# 静态内容的缓存设置
location ~* \.(jpg|jpeg|gif|png|css|js|ico|html)$ {
access_log off;
log_not_found off;
expires 30d;
}
}
# 反向代理设置
upstream backend {
server 192.168.0.2:80;
server 192.168.0.3:80;
}
server {
listen 80;
server_name localhost;
location / {
proxy_pass http://backend;
proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
}
}
}
Tomcat服务器配置(tomcat\_instance1.conf, tomcat\_instance2.conf):
<Host name="localhost" appBase="webapps"
unpackWARs="true" autoDeploy="true">
<!-- 其他配置 ... -->
<Context path="" docBase="/path/to/your/webapp" />
</Host>
确保Nginx和Tomcat的配置正确,并且所有实例都正常运行。LVS和Nginx的配置应该根据实际的网络环境和负载需求进行相应的调整。
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