docker+nginx+tomcat负载均衡

1.下载tomcat

docker pull hub.c.163.com/library/tomcat:8.0.46-jre8

2.启动tomcat，在浏览器输入地址访问。

# 启动tomcat1
docker run -d -p 8082:8080 --name tomcat1 tomcat

# 启动tomcat2
docker run -d -p 8083:8080 --name tomcat2 tomcat

3.创建index.jsp

vi index.jsp

#index.jsp content
This is tomcat1.

4.放到tomcat1的root中，然后修改index.jsp的内容（This is tomcat2.）放到tomcat2

docker cp index.jsp tomcat1:/usr/local/tomcat/webapps/ROOT/index.jsp

5.下载nginx

docker pull hub.c.163.com/library/nginx:latest

6.创建一个nginx.conf

vi nginx.conf

user  nginx;
worker_processes  1;
 
error_log  /var/log/nginx/error.log warn;
pid        /var/run/nginx.pid;
 
 
events {
    worker_connections  1024;
}
 
 
http {
 
    server {
                listen 80;
                location  / {
                        proxy_pass http://blance;
                }
        }
 
    upstream blance{
            server 192.168.1.1:8082;
            server 192.168.1.1:8083;
    }
 
    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;
 
    keepalive_timeout  65;
 
    #gzip  on;
 
    include /etc/nginx/conf.d/*.conf;
}

nginx重写url

#比如访问A：http://127.0.0.1:8080/cl/upload/users/2019-06-0715599128106935009229562019845111.png
#实际访问B：http://127.0.0.1:8080/2019-06-0715599128106935009229562019845111.png


#1、^： 匹配字符串的开始位置；
#2、$：匹配字符串的结束位置；
#3、.*:  .匹配任意字符，*匹配数量0到正无穷；
#4、\. 斜杠用来转义，\.匹配 .
#5、（值1|值2|值3|值4）：或匹配模式，例：（jpg|gif|png|bmp）匹配jpg或gif或png或bmp
#6、i不区分大小写

# $1表示匹配第二个正则表达式的内容
location ~ /upload/users/(.*) {
    proxy_pass   http://127.0.0.1:8088/$1;
}

7.启动nginx，去浏览器不断的访问8081端口的地址，看是不是会出现tomcat1和tomcat2

# -v表示挂载本地目录 -d表示在后台运行 -p表示映射端口
docker run -p 8081:80 --name nginx1 -v ~/hyp/nginx.conf:/etc/nginx/nginx.conf -d hub.c.163.com/library/nginx

#挂载一个文件访问目录/data/ftp/
docker run -p 8081:80 --name nginx1 -v ~/hyp/nginx.conf:/etc/nginx/nginx.conf -v /data/ftp/:/data/ftp/ -d hub.c.163.com/library/nginx

来源：oschina

链接：https://my.oschina.net/u/2489258/blog/3213200

标签

nginx

负载均衡

Docker