Linux配置Nginx+Tomcat负载均衡

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cd /usr/local/tomcat1/webapps/ROOT/

tar -zxvf nginx-1.14.2.tar.gz -C /usr/local

一、Linux配置Nginx

一、下载Nginx

  方式1:从http://nginx.org/en/download.html上下载稳定版,解压安装

 

  方式2:直接在Linux上用命令下载: wget http://nginx.org/download/nginx-1.10.2.tar.gz
  -bash: wget: command not found

  安装wget:
  yum -y install wget

  再执行下载nginx

二、解压安装包&重命名   

  tar -zxvf nginx-1.14.2.tar.gz -C /usr/local

  mv nginx-1.14.2 nginx

三、编译

  1、cd 到nginx目录下

  2、安装相关组件

  • yum install -y pcre pcre-devel
  • yum install -y zlib zlib-devel
  • yum install -y openssl openssl-devel

  这是提示缺少c++环境 ,用 yum install gcc-c++ 安装一下,再执行 ./configure,然后又报错了:

 

./configure: error: the HTTP rewrite module requires the PCRE library.
You can either disable the module by using –without-http_rewrite_module
option, or install the PCRE library into the system, or build the PCRE library
statically from the source with nginx by using –with-pcre= option.

没装伪静态模块需要pcre库
解决方法:
yum install -y pcre pcre-devel

还有可能出现:
错误提示:./configure: error: the HTTP cache module requires md5 functions
from OpenSSL library. You can either disable the module by using
–without-http-cache option, or install the OpenSSL library into the system,
or build the OpenSSL library statically from the source with nginx by using
–with-http_ssl_module –with-openssl= options.

解决办法:
yum -y install openssl openssl-devel

最后 ./configure

 

执行make 编译:

然后:make install  报错:

 

 问题原因: 直接把安装包重命名成nginx了,安装文件没有路径了。

解决办法如下:

删除nginx 文件夹
rm -rf nginx

重新解决源码
tar -zxvf nginx-1.10.2.tar.gz

cd /usr/local/nginx-1.10.2

生成Makefile文件

  ./configure --prefix=/usr/local/nginx

编译源码
make

安装
make install

这里不必要太纠结,只要 /usr/local/ 下出现了 /nagix文件就ok,进入 cd /usr/local/nginx/sbin 下,启动 ./nginx

问题1:出现端口占用,nginx一般是80端口,要么把其他的kill掉,要么更改nginx的端口

1、kill掉其他的之前,要知道哪个占用了:用 lsof -i:80可以查看,这里是之前的lamp占用了

 

2、我们可以修改nginx自身的监听端口,vi /usr/local/nginx/conf/nginx.conf  ,将listen 80,改为自己要的就行,我们这里改81

  

server {
        listen       80;
        server_name  localhost;

        #charset koi8-r;

        #access_log  logs/host.access.log  main;

        location / {
            root   html;
            index  index.html index.htm;
        }

之后进入我们的ip:81就可以访问:

 

 

 

 

二、Linux配置Tomcat

  1、下载

  下载地址:https://tomcat.apache.org/download-90.cgi

  这里我们用tomcat 9 吧,下载后,一样放到 /usr/local 下,解压两份,一份作为 tomcat1 , 一份为 tomcat 2 这两份,用来做负载均衡

  解压: tar -zxvf apache-tomcat-9.0.13.tar.gz -C /usr/local

  重命名: mv apache-tomcat-9.0.13 tomcat1

  

  2、配置:

  修改其中一个tomcat2 的端口信息,tomcat1则不需要修改

  cd /usr/local/tomcat2/conf

  vi server.xml

  改以下三个端口为:8006,8081,8099

<Server port="8005" shutdown="SHUTDOWN">
<Connector port="8080" protocol="HTTP/1.1"
<Connector port="8009" protocol="AJP/1.3" redirectPort="8443" />

  3、分别更改两个 tomcat下默认的jsp页面
  cd /usr/local/tomcat1/webapps/ROOT/

  vi index.jsp
  

  在body中添加一行html 代码,用于区分是哪个tomcat下的页面。

  4、启动两个tomcat

  

 

   cd /usr/local/tomcat1/bin

  ./startup.sh

  打开本地的ip:8080和ip:8081可以看到,两个页面都有提示信息:

但是8080 被占用,我们用8081和8082:8081

8082

 这样,就是安装成功啦!

三、Nginx配置Tomcat负载均衡

  1、安装好nginx的情况下

  2、修改配置文件
  cd /usr/local/nginx/conf
  vi nginx.conf
  添加ngnix分配策略(权重策略)

  

upstream   dangdang.com {
  server 192.168.66.129:8081  weight=1; //tomcat1 的ip和端口
  server 192.168.66.129:8082  weight=1; //tomcat2 的ip和端口
}

整个文件的信息如下:

#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 dangdang.com { 
    server 192.168.66.129:8081 weight=1; //tomcat1 的ip和端口
    server 192.168.66.129:8082 weight=1; //tomcat2 的ip和端口
  }
server { listen
81; server_name localhost; #charset koi8-r; #access_log logs/host.access.log main; location / { root html; index index.html index.htm;
       proxy_pass   http://dangdang.com; } #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; # } #} }

结果:一直刷新

结果1:

结果2:

 

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