nginx反向代理同一台主机多个tomcat实现负载均衡
IP规划：
nginx反向代理服务器：192.168.14.40
tomcat1：192.168.14.13:8080
tomcat2：192.168.14.13:8081
tomcat3：192.168.14.13:8082
一、nginx反向代理
1、安装过程查看其它文章操作
nginx反向代理
2、修改配置文件
二、tomcat安装
1、到tomcat官网https://tomcat.apache.org/查看下载路径，使用wget下载
[root@tomcat ~]# wget http://mirror.bit.edu.cn/apache/tomcat/tomcat-9/v9.0.24/bin/apache-tomcat-9.0.24.tar.gz2、解压并重命名
[root@tomcat ~]# tar -zxvf apache-tomcat-9.0.24.tar.gz
[root@tomcat ~]# mv apache-tomcat-9.0.24 tomcat_8080
[root@tomcat ~]# cp tomcat_8080 tomcat_8081
[root@tomcat ~]# cp tomcat_8080 tomcat_8082
3、yum安装tomcat需要的jdk，就不用再手动配置环境变量
[root@tomcat ~]# yum install -y java-1.8*4、修改配置文件，为多个tomcat分配不同的端口号（默认8080不修改）
[root@tomcat ~]# vim tomcat_8080/conf/server.xml
[root@tomcat ~]# vim tomcat_8081/conf/server.xml
[root@tomcat ~]# vim tomcat_8082/conf/server.xml
[root@tomcat ~]# cat tomcat_8080/conf/server.xml |grep -E '80'
Define a non-SSL/TLS HTTP/1.1 Connector on port 8080
Define a non-SSL/TLS HTTP/1.1 Connector on port 8080
Define a non-SSL/TLS HTTP/1.1 Connector on port 8080
5、启动tomcat
[root@tomcat ~]# tomcat_8080/bin/startup.sh
[root@tomcat ~]# tomcat_8081/bin/startup.sh
[root@tomcat ~]# tomcat_8082/bin/startup.sh查看端口
[root@tomcat ~]# ss -ntlp
State Recv-Q Send-Q Local Address:Port Peer Address:Port
LISTEN 0 128 *:22 *:* users:(("sshd",pid=4886,fd=3))
LISTEN 0 100 127.0.0.1:25 *:* users:(("master",pid=5138,fd=13))
LISTEN 0 100 :::9001 :::* users:(("java",pid=15263,fd=60))
LISTEN 0 100 :::8009 :::* users:(("java",pid=15171,fd=60))
LISTEN 0 100 :::9002 :::* users:(("java",pid=15423,fd=60))
LISTEN 0 100 :::8080 :::* users:(("java",pid=15171,fd=55))
LISTEN 0 100 :::8081 :::* users:(("java",pid=15263,fd=55))
LISTEN 0 100 :::8082 :::* users:(("java",pid=15423,fd=55))
LISTEN 0 128 :::22 :::* users:(("sshd",pid=4886,fd=4))
LISTEN 0 100 ::1:25 :::* users:(("master",pid=5138,fd=14))
LISTEN 0 1 ::ffff:127.0.0.1:8091 :::* users:(("java",pid=15263,fd=75))
LISTEN 0 1 ::ffff:127.0.0.1:8092 :::* users:(("java",pid=15423,fd=75))
LISTEN 0 1 ::ffff:127.0.0.1:8005 :::* users:(("java",pid=15171,fd=74))6、为了便于区分我们修改tomcat里index.jsp里的内容如下
[root@tomcat ~]# vim tomcat_8080/webapps/ROOT/index.jsp
[root@tomcat ~]# vim tomcat_8081/webapps/ROOT/index.jsp
[root@tomcat ~]# vim tomcat_8082/webapps/ROOT/index.jsp
[root@tomcat ~]# cat tomcat_8080/webapps/ROOT/index.jsp
test
SessionID is <%=session.getId()%>
SessionIP is <%=request.getServerName()%>
SessionPort is <%=request.getServerPort()%>
tomcat_8080
三、客户端访问
1、查看
