Nginx+Tomcat多实例及负载均衡配置

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民工哥 2020-11-27 13:04:22 ©著作权

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Nginx+Tomcat多实例及负载均衡配置

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Nginx+Tomcat多实例及负载均衡配置

采用nginx的反向代理负载均衡功能，配合后端的tomcat多实例来实现tomcat WEB服务的负载均衡 01

安装nginx服务

安装所需的pcre库 tar zxf pcre-8.38.tar.gz cd pcre-8.38 ./configure make && make install cd ../ 编译安装Nginx服务 tar zxf nginx-1.11.3.tar.gz cd nginx-1.11.3 useradd nginx -s /sbin/nologin -M yum install openssl openssl-devel -y ./configure --user=nginx --group=nginx --prefix=/application/nginx-1.11.3 --with-http_ssl_module --with-http_stub_status_module make && make install nginx服务的相关介绍及编译参数介绍可参考公众号前面的文章，有关服务的详细配置说明都有涉及到 02

安装JDK环境

Tomcat需要JDK的环境，因此在安装之前需要先安装JDK环境，首先下载好相应的JDK软件包 tar xf jdk-8u60-linux-x64.tar.gz -C /application/ ##无需编译直接解压到指定目录 ln -s /application/jdk1.8.0_60 /application/jdk ##创建软链接 sed -i.ori '$a export JAVA_HOME=/application/jdk\nexport PATH=$JAVA_HOME/bin:$JAVA_HOME/jre/bin:$PATH\nexport CLASSPATH=.$CLASSPATH:$JAVA_HOME/lib:$JAVA_HOME/jre/lib:$JAVA_HOME/lib/tools.jar' /etc/profile
##配置环境变量 source /etc/profile
##生效配置的环境变量 java -version
##查看JDK环境安装是否成功 03

安装配置Tomcat多实例

Tomcat的多实例配置也相当的简单，下载相应版本的软件，解压即可使用 tar xf apache-tomcat-8.0.27.tar.gz -C /application/ ln -s /application/apache-tomcat-8.0.27 /application/tomcat echo 'export TOMCAT_HOME=/application/tomcat'>>/etc/profile 多实例安装配置如下 cp -a apache-tomcat-8.0.27 /application/tomcat8_1 cp -a apache-tomcat-8.0.27 /application/tomcat8_2 切换到相关目录修改相应的配置文件即可（两个实例的配置文件改动的地方相同，只需要修改端口与站点目录即可） cd /application/tomcat8_2/conf/ diff /application/tomcat/conf/server.xml ./server.xml 22c22 < <Server port="8005" shutdown="SHUTDOWN">

<Server port="8012" shutdown="SHUTDOWN"> 69c69 < <Connector port="8080" protocol="HTTP/1.1"

<Connector port="8082" protocol="HTTP/1.1"

123c123 < <Host name="localhost" appBase="webapps"

  <Host name="localhost"  appBase="/web/www/bbs"

创建站点目录 mkdir /web/www/{www,bbs}/ROOT -p echo "hello">/web/www/www/ROOT/index.jsp echo "world">/web/www/bbs/ROOT/index.html 启动多实例 /application/tomcat8_1/bin/startup.sh /application/tomcat8_2/bin/startup.sh 04

配置nginx

vim /application/nginx/conf/nginx.conf #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 web_pools { server 127.0.0.1:8081; server 127.0.0.1:8082; } server { listen 80; server_name localhost; location / { root html; index index.jsp index.html index.htm; proxy_pass http://web_pools; } } } 查检语法与启动nginx服务 /application/nginx/sbin/nginx -t /application/nginx/sbin/nginx 05