• Nginx+Tomcat负载均衡

    Nginx是一款轻量级的Web 服务器／反向代理服务器及电子邮件（IMAP/POP3）代理服务器，并在一个BSD-like 协议下发行。 其特点是占有内存少，并发能力强，事实上nginx的并发能力确实在同类型的网页伺服器中表现较好。

    准备
    nginx：nginx/Windows-1.10.1 http://nginx.org/en/download.html
    tomcat：apache-tomcat-6.0.45

    准备2个tomcat服务器分别命名为：

    1
    2
    apache-tomcat-6.0.45-8090
    apache-tomcat-6.0.45-8091

    同时修改server.xml文件中的端口号，有三个端口号需要修改，防止端口冲突:

    1
    2
    3
    1.<Server port="8005" shutdown="SHUTDOWN">
    2.<Connector port="8090" protocol="HTTP/1.1" ...
    3.<Connector port="8009" protocol="AJP/1.3" redirectPort="8443" />

    修改tomcat默认首页：webapps/ROOT/index.html，用于识别当前进入的是哪个tomcat:

    1
    2
    <td align="left" valign="top"><b>Apache Tomcat------8090</b></td>
    <td align="left" valign="top"><b>Apache Tomcat------8091</b></td>

    nginx.conf配置
    修改conf/nginx.conf文件

    1
    2
    3
    4
    5
    6
    7
    8
    9
    10
    11
    12
    13
    14
    15
    16
    17
    18
    19
    20
    21
    22
    23
    24
    25
    26
    27
    28
    29
    30
    31
    32
    33
    34
    35
    36
    37
    38
    39
    40
    41
    42
    43
    44
    45
    46
    47
    48
    49
    50
    51
    52
    53
    54
    55
    56
    57
    58
    59
    60
    61
    62
    63
    64
    65
    66
    67
    68
    69
    70
    71
    72
    73
    74
    75
    76
    77
    78
    79
    80
    81
    82
    83
    84
    85
    86
    87
    88
    89
    90
    91
    92
    93
    94
    95
    96
    97
    98
    99
    100
    101
    102
    103
    104
    105
    106
    107
    108
    109
    110
    111
    112
    113
    114
    115
    116
    117
    118
    119
    120
    121
    122
    123
    124
    125
    126
    127
    128
    129
    130
    131
    132
    133
    134
    135
    136
    #user  nobody;
    worker_processes  1;
     
    #error_log  logs/error.log;
    #error_log  logs/error.log  notice;
    #error_log  logs/error.log  info;
     
    #pid        logs/nginx.pid;
     
     
    events {
        worker_connections  1024;
    }
     
     
    http {
        include       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  logs/access.log  main;
     
        sendfile        on;
        #tcp_nopush     on;
     
        #keepalive_timeout  0;
        keepalive_timeout  65;
     
        #gzip  on;
         
        upstream suroot{
            server 127.0.0.1:8090 max_fails=2 fail_timeout=30s;
            server 127.0.0.1:8091 max_fails=2 fail_timeout=30s;
        }
     
        server {
            listen       80;
            server_name  localhost;
     
            #charset koi8-r;
     
            #access_log  logs/host.access.log  main;
     
            location / {
                root   html;
                index  index.html index.htm;
            proxy_pass http://suroot/;   #请求转向suroot定义的服务器列表
            #以下是一些反向代理的配置可删除.
                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;#允许客户端请求的最大单文件字节数
                client_body_buffer_size   128k;#缓冲区代理缓冲用户端请求的最大字节数，
                proxy_connect_timeout   600;#nginx跟后端服务器连接超时时间(代理连接超时)
                proxy_send_timeout   600; #后端服务器数据回传时间(代理发送超时)
                proxy_read_timeout   600; #连接成功后，后端服务器响应时间(代理接收超时)
                proxy_buffer_size   8k; #设置代理服务器（nginx）保存用户头信息的缓冲区大小
                proxy_buffers   4 64k;#proxy_buffers缓冲区，网页平均在32k以下的话，这样设置
                proxy_busy_buffers_size   128k;#高负荷下缓冲大小（proxy_buffers*2）
                proxy_temp_file_write_size  128k;#设定缓存文件夹大小，大于这个值，将从upstream服务器传
            }
     
            #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 {
        #    listen       8000;
        #    listen       somename:8080;
        #    server_name  somename  alias  another.alias;
     
        #    location / {
        #        root   html;
        #        index  index.html index.htm;
        #    }
        #}
     
     
        # HTTPS server
        #
        #server {
        #    listen       443 ssl;
        #    server_name  localhost;
     
        #    ssl_certificate      cert.pem;
        #    ssl_certificate_key  cert.key;
     
        #    ssl_session_cache    shared:SSL:1m;
        #    ssl_session_timeout  5m;
     
        #    ssl_ciphers  HIGH:!aNULL:!MD5;
        #    ssl_prefer_server_ciphers  on;
     
        #    location / {
        #        root   html;
        #        index  index.html index.htm;
        #    }
        #}
     
    }

    测试
    1.tomcat/bin/startup.bat分别启动2个tomcat
    2.启动nginx
    执行nginx.exe或者使用命令：start nginx

    常用命令：

    1
    2
    3
    4
    start nginx           启动
    nginx -s stop         停止服务
    nginx -t              验证nginx.conf是否正确
    nginx -s reload       改变了nginx配置信息并需要重新载入

    因为nginx启动的端口是80，所以我们直接访问：http://localhost/

    不停刷新页面，经测试Apache Tomcat——8090和Apache Tomcat——8091交替出现
  • 相关阅读:
    CS224n, lec 10, NMT & Seq2Seq Attn
    CS231n笔记 Lecture 11, Detection and Segmentation
    CS231n笔记 Lecture 10, Recurrent Neural Networks
    CS231n笔记 Lecture 9, CNN Architectures
    CS231n笔记 Lecture 8, Deep Learning Software
    CS231n笔记 Lecture 7, Training Neural Networks, Part 2
    pytorch坑点排雷
    Sorry, Ubuntu 17.10 has experienced an internal error
    VSCode配置python插件
    tmux配置与使用
  • 原文地址：https://www.cnblogs.com/zhangboyu/p/7448918.html
Copyright © 2020-2023  润新知