8月12日上课内容综合配置详解四层+七层代理

news2024/12/23 11:03:45

后续内容概述：

Ivs集群:
keepalive:vip实现代理高可用 NAT VPN DR (DR最常用)

数据库:增制改查备份高可用主从复制读写分离

DBA 市场量小，从业者不多，工资一般般。

中间件: redis.*
分布式存储: ELK日志分析。kafka消息队列

监控zabbix

docker:容器化部罢服务微服务。
ansibles:自动化运维，比shell好用 playbook

kys：面试占60%，重要，了解工作原理，要能搭起来

上述这些的概念，都必须会，服务要重点掌握

还得会排错，看日志

控制:开关重启 /var/log/messages
nginx logs access.log 访问日志
error.log 访问报错日志。
tomcat logs catlina.out

回归正题：

配置

四层转发流量+七层后端代理
环境：
192.168.233.61 nginx四层代理
192.168.233.62 nginx七层代理
192.168.233.63 nginx七层代理
192.168.233.71 tomcat1多实例
192.168.233.72 tomcat2单实例

systemctl stop firewalld
setenforce 0

192.1682.233.61 nginx四层代理:
vim /usr/local/nginx/conf/nginx.conf

pid /usr/local/nginx/run/nginx.pid;

events {
worker_connections 1024;
}

stream {
upstream test {
server 192.168.233.62:80;
server 192.168.233.63:80;

}
server {

listen 8080;
proxy_pass test;
}

}

nginx七层代理62和63:
upstream ky30 {
server 192.168.233.71:8080 weight=1;
server 192.168.233.71:8081 weight=1;
server 192.168.233.72:8080 weight=1;
}
server {
listen 80;
server_name localhost;

#charset koi8-r;

#access_log logs/host.access.log main;
location ~ .*\.jsp$ {
proxy_pass http://ky30; #配置Nginx处理动态页面请求，将 .jsp文件请求转发到Tomcat 服务器处理

proxy_set_header HOST $host; #设定后端的Web服务器接收到的请求访问的主机名（域名或IP、端口），
       默认HOST的值为proxy_pass指令设置的主机名。

proxy_set_header X-Real-IP $remote_addr; #把$remote_addr赋值给X-Real-IP，来获取源IP

proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
       #在nginx 作为代理服务器时，设置的IP列表，会把经过的机器ip，代理机器ip都记录下来

}
       location ~ .*\.(gif|jpg|jpeg|png|bmp|swf|css)$ {
           root /usr/local/nginx/html;
           expires 10d;
       }
配置相同

192.168.233.71 tomcat1多实例：

cp -a /usr/local/tomcat/tomcat1 /usr/local/tomcat/tomcat2

#配置多实例tomcat
vim /etc/profile.d/tomcat.sh
#tomcat1的全局变量设置
export CATALINA_HOME1=/usr/local/tomcat/tomcat1
export CATALINA_BASE1=/usr/local/tomcat/tomcat1
export TOMCAT_HOME1=/usr/local/tomcat/tomcat1

#tomcat2的全局变量设置
export CATALINA_HOME2=/usr/local/tomcat/tomcat2
export CATALINA_BASE2=/usr/local/tomcat/tomcat2
export TOMCAT_HOME2=/usr/local/tomcat/tomcat2

#加载设置好的全局变量
source /etc/profile.d/tomcat.sh

修改 tomcat2 中的 server.xml 文件，要求各 tomcat 实例配置不能有重复的端口号
vim /usr/local/tomcat/tomcat2/conf/server.xml
<Server port="8006" shutdown="SHUTDOWN">       #22行，修改Server prot，默认为8005 -> 修改为8006
<Connector port="8081" protocol="HTTP/1.1"       #69行，修改Connector port，HTTP/1.1 默认为8080 -> 修改为8081
<Connector port="8010" protocol="AJP/1.3" redirectPort="8443" />   #116行，修改Connector port AJP/1.3，
默认为8009 -> 修改为8010

修改各 tomcat 实例中的 startup.sh 和 shutdown.sh 文件，添加 tomcat 环境变量
vim /usr/local/tomcat/tomcat1/bin/startup.sh
# -----------------------------------------------------------------------------
# Start Script for the CATALINA Server
# -----------------------------------------------------------------------------
##添加以下内容
export CATALINA_BASE=$CATALINA_BASE1
export CATALINA_HOME=$CATALINA_HOME1
export TOMCAT_HOME=$TOMCAT_HOME1

vim /usr/local/tomcat/tomcat1/bin/shutdown.sh
# -----------------------------------------------------------------------------
# Stop script for the CATALINA Server
# -----------------------------------------------------------------------------
export CATALINA_BASE=$CATALINA_BASE1
export CATALINA_HOME=$CATALINA_HOME1
export TOMCAT_HOME=$TOMCAT_HOME1

vim /usr/local/tomcat/tomcat2/bin/startup.sh
# -----------------------------------------------------------------------------
# Start Script for the CATALINA Server
# -----------------------------------------------------------------------------
export CATALINA_BASE=$CATALINA_BASE2
export CATALINA_HOME=$CATALINA_HOME2
export TOMCAT_HOME=$TOMCAT_HOME2

vim /usr/local/tomcat/tomcat2/bin/shutdown.sh
# -----------------------------------------------------------------------------
# Stop script for the CATALINA Server
# -----------------------------------------------------------------------------
export CATALINA_BASE=$CATALINA_BASE2
export CATALINA_HOME=$CATALINA_HOME2
export TOMCAT_HOME=$TOMCAT_HOME2

配置tomcat01的测试页面

mkdir /usr/local/tomcat/tomcat1/webapps/test

vim /usr/local/tomcat/tomcat1/webapps/test/index.jsp
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<html>
<head>
<title>tomcat01</title>
</head>
<body>
<% out.println("tomcat01 running");%>
</body>
</html>

步骤详解：

原理图：