Tomcate主从服务器安装、nginx+Tomcate-简单负载

实验需求：需开启三台虚拟机

连接vm1网卡

地址

第一台192.168.0.2

第二台192.168.0.3

第三台192.168.0.4

---------------------------------------------------------------------------

第一、二台虚拟机配置

1、上传三个压缩包

2、进入/root目录下

tar xf
apache-tomcat-8.5.23.tar.gz

tar xf
jdk-8u241-linux-x64.tar.gz

cp -rv
jdk1.8.0_241/ /usr/local/java

编辑配置文件

vi /etc/profile //在文件末尾新增

export
JAVA_HOME=/usr/local/java

export
JRE_HOME=/usr/local/java/jre

export
PATH=$PATH:/usr/local/java/bin

export
CLASSPATH=./:/usr/local/java/lib:/usr/local/java/jre/lib

source /etc/profile

java
-version

java
version "1.8.0_241"

优化操作

cp -r  apache-tomcat-8.5.23 /usr/local/tomcat8

ln -s
/usr/local/tomcat8/bin/startup.sh /usr/bin/tomcatup

ln -s
/usr/local/tomcat8/bin/shutdown.sh /usr/bin/tomcatdown

tomcatup

netstat
-anpt | grep 8080

未修改之前

修改之后访问

vi /usr/local/tomcat8/webapps/ROOT/index.jsp //修改默认网页内容 
删除所有

添加内容

<h1>This is my first Server!</h1>

访问第一台

第二台同上操作

进入第二台里面进行配置

vi /usr/local/tomcat8/webapps/ROOT/index.jsp //修改默认网页内容 
删除所有

添加内容

<h1>This is my second Server!</h1>

访问第二台

--------------------------------------------------------------------------

第三台虚拟机配置

挂载光盘、安装yum仓库

同上操作

tar xf
apache-tomcat-8.5.23.tar.gz

tar xf
jdk-8u241-linux-x64.tar.gz

cp -rv
jdk1.8.0_241/ /usr/local/java

vi
/etc/profile //在文件末尾新增

export
JAVA_HOME=/usr/local/java

export
JRE_HOME=/usr/local/java/jre

export
PATH=$PATH:/usr/local/java/bin

export
CLASSPATH=./:/usr/local/java/lib:/usr/local/java/jre/lib

source
/etc/profile

java
-version

java
version "1.8.0_241"

……

……

--------------以上是搭建JAVA程序的运行环境---------

cp -r  apache-tomcat-8.5.23 /usr/local/tomcat8         

ln -s
/usr/local/tomcat8/bin/startup.sh /usr/bin/tomcatup

ln -s
/usr/local/tomcat8/bin/shutdown.sh /usr/bin/tomcatdown

tomcatup

netstat
-anpt | grep 8080

添加yum仓库

挂载光盘

安装c语言

yum install gcc gcc-c++ -y

yum
install -y \

pcre-devel
\

zlib-devel
\

openssl-devel

useradd -M -s /sbin/nologin nginx

tar xzvf
nginx-1.17.8.tar.gz

cd  nginx-1.17.8

./configure
\

--prefix=/usr/local/nginx
\

--user=nginx
\

--group=nginx
\

--with-file-aio
\

--with-http_stub_status_module
\

--with-http_gzip_static_module
\

--with-http_flv_module
\

--with-http_ssl_module

make && make install

ln -s /usr/local/nginx/sbin/nginx /usr/local/sbin/

制作管理脚本

vi /etc/init.d/nginx

#!/bin/bash

#
chkconfig: 35 99 20

#
description: Nginx Service Control Script

PROG="/usr/local/nginx/sbin/nginx"

PIDF="/usr/local/nginx/logs/nginx.pid"

case
"$1" in

  start)

    $PROG

    ;;

  stop)

    kill -s QUIT $(cat $PIDF)

    ;;

  restart)

    $0 stop

    $0 start

    ;;

  reload)

    kill -s HUP $(cat $PIDF)

    ;;

  *)

        echo "Usage: $0
{start|stop|restart|reload}"

        exit 1

esac

exit 0

添加权限

chmod +x
/etc/init.d/nginx

chkconfig
--add nginx

cp
/usr/local/nginx/conf/nginx.conf /usr/local/nginx/conf/nginx.conf.back

vi
/usr/local/nginx/conf/nginx.conf

---在下面增加一行proxy_pass--------

location /
{

            root   html;

            index  index.html index.htm;

            proxy_pass ​​http://tomcatserver​​;

        }

----在server模块上面新增如下--注意新版本的nginx
和 tomcat不可以有 _ 符号，否则会报错---

 upstream tomcatserver {

        server 192.168.0.2:8080 weight=1;

        server 192.168.0.3:8080 weight=1;

        }

cd /usr/local/tomcat8/conf/

vi server.xml //跳到行尾，在Host name下新增

搜索<Host
name="localhost" 
appBase="webapps"

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

            unpackWARs="true"
autoDeploy="true">

<Context
path="" docBase="SLSaleSystem" reloadable="true"
debug="0"></Context> //新增

service nginx start

访问

在刷新访问第二次