# 每台服务器都一样

[root@nginx ~]# cat /etc/hosts

127.0.0.1   localhost localhost.localdomain localhost4 localhost4.localdomain4

::         localhost localhost.localdomain localhost6 localhost6.localdomain6

192.168.94.66   nginx

192.168.94.22   tomcat1

192.168.94.33   tomcat2

[root@nginx ~]# scp /etc/hosts 192.168.94.22:/etc/hosts

The authenticity of host '192.168.94.22 (192.168.94.22)' can't be established.

ECDSA key fingerprint is SHA256:LztMUHktwCLql3Iw5/phDFbJoKLLO/BBNUVNV7DcAcU.

ECDSA key fingerprint is MD5:f7:4e:9a:f2::bc:c5::d2:a9::b0:bf:4b:bb:7c.

Are you sure you want to continue connecting (yes/no)? yes

Warning: Permanently added '192.168.94.22' (ECDSA) to the list of known hosts.

root@192.168.94.22's password:

hosts                                                     %     .3KB/s   :

[root@nginx ~]# scp /etc/hosts 192.168.94.33:/etc/hosts

The authenticity of host '192.168.94.33 (192.168.94.33)' can't be established.

ECDSA key fingerprint is SHA256:LztMUHktwCLql3Iw5/phDFbJoKLLO/BBNUVNV7DcAcU.

ECDSA key fingerprint is MD5:f7:4e:9a:f2::bc:c5::d2:a9::b0:bf:4b:bb:7c.

Are you sure you want to continue connecting (yes/no)? yes

Warning: Permanently added '192.168.94.33' (ECDSA) to the list of known hosts.

root@192.168.94.33's password:

hosts                                                     %     .0KB/s   :    

[root@nginx ~]# wget http://nginx.org/packages/centos/7/x86_64/RPMS/nginx-1.14.0-1.el7_4.ngx.x86_64.rpm

[root@nginx ~]# yum -y install pcre-devel zlib-devel openssl-devel

[root@nginx ~]# rpm -i nginx-1.14.-.el7_4.ngx.x86_64.rpm

[root@nginx ~]# vim /etc/nginx/nginx.conf    # 修改配置文件 添加以下内容

    upstream tomcat {

        server 192.168.94.22:;

        server 192.168.94.33:;

    }   

    server {

        listen ;

            server_name 192.168.94.11:;

                location / {

                   proxy_pass http://tomcat;

                   proxy_set_header X-Real-IP $remote_addr;

                }   

[root@tomcat1 ~]# cp /usr/local/tomcat/conf/server.xml{,.bak}

[root@tomcat1 ~]# vim /usr/local/tomcat/conf/server.xml

将<Engine name="Catalina" defaultHost="localhost">修改为

<Engine name="Catalina" defaultHost="localhost" jvmRoute="tomcat1">   #tomcat2的配置修改成 jvmRoute="tomcat2"

将<Cluster className="org.apache.catalina.ha.tcp.SimpleTcpCluster"/>的注释去掉

[root@tomcat1 ~]# vim /usr/local/tomcat/webapps/ROOT/WEB-INF/web.xml

在</web-app>的上面添加<distributable/>

[root@tomcat1 ~]# vim /usr/local/tomcat/webapps/ROOT/s.jsp

Session ID:<%= session.getId() %><BR>          # 显示session ID

SessionPort:<%= request.getServerPort() %>　　　# 显示端口

<% out.println("This tomcat server 192.168.94.22");%>　　　　# IP自己修改

[root@tomcat2 ~]# vim /usr/local/tomcat/webapps/ROOT/s.jsp

Session ID:<%= session.getId() %><BR>

SessionPort:<%= request.getServerPort() %>

<% out.println("This tomcat server 192.168.94.33");%>

[root@nginx ~]# systemctl start nginx

[root@tomcat1 ~]# /usr/local/tomcat/bin/startup.sh

Using CATALINA_BASE:   /usr/local/tomcat

Using CATALINA_HOME:   /usr/local/tomcat

Using CATALINA_TMPDIR: /usr/local/tomcat/temp

Using JRE_HOME:        /usr/local/jdk10

Using CLASSPATH:       /usr/local/tomcat/bin/bootstrap.jar:/usr/local/tomcat/bin/tomcat-juli.jar

Tomcat started.

[root@tomcat2 ~]# /usr/local/tomcat/bin/startup.sh

Using CATALINA_BASE:   /usr/local/tomcat

Using CATALINA_HOME:   /usr/local/tomcat

Using CATALINA_TMPDIR: /usr/local/tomcat/temp

Using JRE_HOME:        /usr/local/jdk10

Using CLASSPATH:       /usr/local/tomcat/bin/bootstrap.jar:/usr/local/tomcat/bin/tomcat-juli.jar

Tomcat started.