最近做的实验环境，在一台机器上部署两个tomcat目录，使用同一个war包的docBase，不同端口号，前面部署了一个nginx，做了负载均衡配置，将用户请求随机分配到两个跑着相同应用的tomcat，刚开始是静态图片等不能分流至tomcat，后来在server配置里使用local /{ ... }设置全部分流，现象就成了登录界面都解析不了了，图片也不能正常显示，而且速度明显没直连一个tomcat快，请教大神们该怎样修改配置达到负载均衡效果。
操作系统版本
[root@rhel68 ~]# uname -a
Linux rhel68 2.6.32-642.el6.x86_64 #1 SMP Wed Apr 13 00:51:26 EDT 2016 x86_64 x86_64 x86_64 GNU/Linux tomcat 版本
[tomcat@rhel68 bin]$ ./version.sh
Using CATALINA_BASE: /home/tomcat/tomcat-aos_1
Using CATALINA_HOME: /home/tomcat/tomcat-aos_1
Using CATALINA_TMPDIR: /home/tomcat/tomcat-aos_1/temp
Using JRE_HOME: /usr/java/default
Using CLASSPATH: /home/tomcat/tomcat-aos_1/bin/bootstrap.jar:/home/tomcat/tomcat-aos_1/bin/tomcat-juli.jar
Server version: Apache Tomcat/8.0.35
Server built: May 11 2016 21:57:08 UTC
Server number: 8.0.35.0
OS Name: Linux
OS Version: 2.6.32-642.el6.x86_64
Architecture: amd64
JVM Version: 1.7.0_101-b14
JVM Vendor: Oracle Corporation tomcat server 的Host配置片段
<Host name="localhost" appBase="webapps"
unpackWARs="true" autoDeploy="true">
<!-- SingleSignOn valve, share authentication between web applications
Documentation at: /docs/config/valve.html -->
<!--
<Valve className="org.apache.catalina.authenticator.SingleSignOn" />
-->
<!-- Access log processes all example.
Documentation at: /docs/config/valve.html
Note: The pattern used is equivalent to using pattern="common" -->
<Valve className="org.apache.catalina.valves.AccessLogValve" directory="logs"
prefix="localhost_access_log" suffix=".txt"
pattern="%h %l %u %t "%r" %s %b" />
<Context path="/aos" reloadable="true" docBase="/home/tomcat/war/aos.war" />
</Host> nginx版本
[nginx@rhel68 sbin]$ ./nginx -v
nginx version: nginx/1.11.1 nginx具体配置
[nginx@rhel68 conf]$ cat nginx.conf
#运行用户
#user nobody;
#开启进程数 <=CPU数
worker_processes 1;
#错误日志保存位置
error_log logs/error.log;
#error_log logs/error.log notice;
#error_log logs/error.log info;
#进程号保存文件
pid logs/nginx.pid;
#等待事件
events {
#Linux下打开提高性能
use epoll;
#每个进程最大连接数（最大连接=连接数x进程数）
worker_connections 1024;
}
http {
#文件扩展名与文件类型映射表
include mime.types;
#默认文件类型
default_type application/octet-stream;
#日志文件输出格式 这个位置相于全局设置
log_format main '$remote_addr - $remote_user [$time_local] "$request" '
'$status $body_bytes_sent "$http_referer" '
'"$http_user_agent" "$http_x_forwarded_for"';
#请求日志保存位置
#access_log logs/access.log main;
#设定请求缓冲
client_header_buffer_size 1k;
large_client_header_buffers 4 4k;
server_names_hash_bucket_size 128;
#打开发送文件
sendfile on;
#tcp_nopush on;
tcp_nodelay on;
#keepalive_timeout 0;
keepalive_timeout 65;
#客户端上传文件大小控制
client_max_body_size 8m;
#打开gzip压缩
#gzip on;
#设定负载均衡的服务器列表
upstream aos_server {
#weigth参数表示权值，权值越高被分配到的几率越大
#本机上的Squid开启3128端口
server 10.0.2.68:6060 weight=1;
server 10.0.2.68:7060 weight=1;
#server 192.168.8.3:80 weight=6;
}
#第一个虚拟主机
server {
#监听IP端口
listen 5060;
#主机名
server_name localhost;
#root
#设置字符集
#charset koi8-r;
#本虚拟server的访问日志 相当于局部变量
#access_log logs/host.access.log main;
#日志文件输出格式
#log_format main '$remote_addr - $remote_user [$time_local] "$request" '
# '$status $body_bytes_sent "$http_referer" '
# '"$http_user_agent" "$http_x_forwarded_for"';
#静态文件缓存时间设置
#location ~ .*\.(gif|jpg|jpeg|png|bmp|swf)$ {
# expires 30d;
#}
#静态文件缓存时间设置
#location ~ .*\.(js|css)?$ {
# expires 1h;
#}
#对本server"/"启用负载均衡
location / {
# root html;
# index index.html index.htm login.jhtml index.jhtml;
proxy_pass http://aos_server;
proxy_redirect off;
proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
client_max_body_size 10m;
client_body_buffer_size 128k;
proxy_connect_timeout 90;
proxy_send_timeout 90;
proxy_read_timeout 90;
#proxy_buffering off;
proxy_buffer_size 4k;
proxy_buffers 4 32k;
proxy_busy_buffers_size 64k;
proxy_temp_file_write_size 64k;
}
#设定查看Nginx状态的地址
#location /NginxStatus {
# stub_status on;
# access_log on;
# auth_basic “NginxStatus”;
# auth_basic_user_file conf/htpasswd;
#}
#error_page 404 /404.html;
# redirect server error pages to the static page /50x.html
#
error_page 500 502 503 504 /50x.html;
location = /50x.html {
root html;
}
# proxy the PHP scripts to Apache listening on 127.0.0.1:80
#
#location ~ \.php$ {
# proxy_pass http://127.0.0.1;
#}
# pass the PHP scripts to FastCGI server listening on 127.0.0.1:9000
#
#location ~ \.php$ {
# root html;
# fastcgi_pass 127.0.0.1:9000;
# fastcgi_index index.php;
# fastcgi_param SCRIPT_FILENAME /scripts$fastcgi_script_name;
# include fastcgi_params;
#}
# deny access to .htaccess files, if Apache's document root
# concurs with nginx's one
#
#location ~ /\.ht {
# deny all;
#}
}
# another virtual host using mix of IP-, name-, and port-based configuration
#server {
#多监听
# listen localhost:8666;
#主机名
# server_name xx;
#WEB文件路径
# root xx;
#默认首页
# index HomePage.html;
#location / {
# #这里相当于局部变量
# root xx;
# index HomePage.html;
#}
#}
# HTTPS server HTTPS SSL加密服务器
#
#server {
# listen 443;
# server_name localhost;
# ssl on;
# ssl_certificate cert.pem;
# ssl_certificate_key cert.key;
# ssl_session_timeout 5m;
# ssl_protocols SSLv2 SSLv3 TLSv1;
# ssl_ciphers ALL:!ADH:!EXPORT56:RC4+RSA:+HIGH:+MEDIUM:+LOW:+SSLv2:+EXP;
# ssl_prefer_server_ciphers on;
# location / {
# root html;
# index index.html index.htm;
# }
#}
} 补充一点，tomcat和nginx都是建立的独立用户，有自己的用户组，软件等全套都在/home目录下
[root@rhel68 ~]# cd /home
[root@rhel68 home]# la
total 28
drwxr-xr-x. 7 root root 4096 Jun 2 15:28 .
drwx------. 9 zabbix zabbix 4096 Jun 3 13:50 zabbix
drwx------. 4 oracle oinstall 4096 Jun 8 14:31 oracle
drwxrwxr-x. 7 redis net 4096 Jun 9 22:10 redis
dr-xr-xr-x. 26 root root 4096 Jun 11 09:39 ..
drwx------. 12 tomcat net 4096 Jun 11 09:52 tomcat
drwxrwxr-x. 5 nginx net 4096 Jun 11 10:00 nginx