Nginx+Tomcat集群与负载均衡

blovekyo

Nginx+Tomcat集群与负载均衡
架构描述
前端一台nginx服务器做负载均衡器,后端放N台tomcat组成集群处理服务,通过nginx转发到后面(注:没做动静分离,静态动态全部都转给tomcat)
优点:实现了可弹性化的架构,在压力增大的时候可以临时添加tomcat服务器添加到这个架构里面去.

先修改nginx.conf配置
如想了解Nginx负载均衡策略,请查阅Nginx负载均衡策略.
user nginx;
worker_processes 10;
worker_rlimit_nofile 100000;
error_log
/var/log/nginx/error.log;
#error_log /var/log/nginx/error.log notice;#error_log /var/log/nginx/error.log info;
pid /var/run/nginx.pid;
events {
worker_connections 1024;
use epoll;
}
http {
include /etc/nginx/mime.types;
default_type application/octet-stream;
log_format main '$remote_addr - $remote_user [$time_local]"$request" '
'$status $body_bytes_sent "$http_referer" '
'"$http_user_agent""$http_x_forwarded_for"';
access_log /var/log/nginx/access.log main;
sendfile on;
tcp_nopush on;
tcp_nodelay on;
server_tokens off;
gzip on;
gzip_static on;
gzip_comp_level 5;
gzip_min_length 1024;
keepalive_timeout 65;
limit_conn_zone $binary_remote_addr zone=addr:10m;
# Load config files from the /etc/nginx/conf.d directory
include /etc/nginx/conf.d/*.conf;
upstream www.wp.com {#此处为轮询策略 换成你自己的tomcat地址#可以根据自己的需求配置多个tomcat,当某个地址无效时,nginx会自动切换
server 192.168.5.206:8081;
server 192.168.5.206:8082;
}
server {#配置对应的端口与域名
listen 80;
server_name www.wp.com;
#charset koi8-r;#access_log logs/host.access.log main;
location / {
root html;
index index.html index.htm;
#配置上面的server name
proxy_pass http://www.wp.com;
proxy_set_header X-Real-IP $remote_addr;
}
location ~ ^/(WEB-INF)/ {
deny all;
}
error_page 404 /404.html;
location = /404.html {
root /usr/share/nginx/html;
}# redirect server error pages to the static page /50x.html
error_page 500502503504 /50x.html;
location = /50x.html {
root /usr/share/nginx/html;
}}}

修改tomcat配置
找到TOMCAT_HOME/conf/server.xml,在host标签处加入Context标签
注意:如果是单机启动多tomcat需要改变对应的port,否则会启动不了,多机tomcat无此情况


到此重启tomcat与nginx服务即可.