Tomcat 多实例部署alanpo的博客-

安装 Tomcat & JDK

• 安装时候选择 tomcat 软件版本要与程序开发使用的版本一致。jdk 版本要进行与 tomcat 保持一致。
  1、系统环境说明

[root@test.com ~]# cat /etc/redhat-release  CentOS Linux release 7.4.1708 (Core) [root@test.com ~]# uname -a  Linux test.com 3.10.0-693.el7.x86_64 #1 SMP Tue Aug 22 21:09:27 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux [root@test.com ~]# getenforce  Disabled [root@test.com ~]# systemctl status firewalld.service ● firewalld.service - firewalld - dynamic firewall daemon    Loaded: loaded (/usr/lib/systemd/system/firewalld.service; disabled; vendor preset: enabled)    Active: inactive (dead)      Docs: man:firewalld(1) 

2 、安装 JDK

1、命令集

[root@test.com ~]# tar xf jdk-8u201-linux-x64.tar.gz -C /usr/local/ [root@test.com ~]# cd /usr/local/ [root@test.com local]# ln -s jdk1.8.0_201/ java # 设置环境变量 [root@test.com ~]# vim /etc/profile export JAVA_HOME=/usr/local/java export JRE_HOME=/usr/local/java/jre export PATH=$JAVA_HOME/bin:$JRE_HOME/bin:$PATH [root@test.com ~]# source /etc/profile 

2、测试jdk是否安装成功

[root@test.com ~]# java -version java version "jdk1.8.0_201" Java(TM) SE Runtime Environment (build 1.8.0_60-b27) Java HotSpot(TM) 64-Bit Server VM (build 25.60-b23, mixed mode) 

3、安装Tomcat

[root@test.com ~]# tar xf apache-tomcat-8.0.27.tar.gz -C /usr/local/ [root@test.com ~]# cd /usr/local/ [root@test.com ~]# ln -s /usr/laocal/apache-tomcat-8.0.27 /usr/local/tomcat # 设置环境变量 [root@test.com ~]# vim /etc/profile export JAVA_HOME=/usr/local/java export TOMCAT_HOME=/usr/local/tomcat export JRE_HOME=/usr/local/java/jre export PATH=$TOMCAT_HOME/bin:$JAVA_HOME/bin:$JRE_HOME/bin:$PATH # 注意授权，统一权限 [root@test.com ~]# chown -R root.root /usr/local/jdk/ /usr/local/tomcat/ 

4、检查tomcat是否安装成功

[root@test.com ~]# /usr/local/tomcat/bin/version.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/jdk Using CLASSPATH: /usr/local/tomcat/bin/bootstrap.jar:/usr/local/tomcat/bin/tomcat-juli.jar Server version: Apache Tomcat/8.0.27 Server built:   Sep 28 2015 08:17:25 UTC Server number: 8.0.27.0 OS Name:        Linux OS Version: 3.10.0-693.el7.x86_64 Architecture:   amd64 JVM Version: 1.8.0_60-b27 JVM Vendor:     Oracle Corporation 

3、Tomcat 的管理

# 启动程序/usr/local/tomcat/bin/startup.sh # 关闭程序/usr/local/tomcat/bin/shutdown.sh 

4、检查tomcat是否启动正常

[root@test.com ~]# netstat -lntup  |grep java tcp6       0 0 :::8080 :::*                   LISTEN      30560/java           tcp6       0 0 127.0.0.1:8005 :::*          LISTEN      30560/java           tcp6       0 0 :::8009 :::*           LISTEN      30560/java 

5、Tomcat 日志说明

[root@test.com ~]# tailf /usr/local/tomcat/logs/catalina.out 24-Nov-2017 15:09:51.654 INFO [main] org.apache.coyote.AbstractProtocol.start Starting ProtocolHandler ["http-nio-8080"] 24-Nov-2017 15:09:51.665 INFO [main] org.apache.coyote.AbstractProtocol.start Starting ProtocolHandler ["ajp-nio-8009"] 24-Nov-2017 15:09:51.670 INFO [main] org.apache.catalina.startup.Catalina.start Server startup in 60037 ms 

6、WEB站点部署

• 上线的代码有两种方式：

  • 第一种方式是直接将程序目录放在 webapps 目录下面。
  • 第二种方式是使用开发工具将程序打包成 war 包，然后上传到 webapps 目录下面。

  1、直接部署 web 站点

[root@test.com webapps]# pwd /usr/local/tomcat/webapps [root@test.com webapps]#  [root@test.com webapps]# cat /usr/local/tomcat/webapps/memtest/meminfo.jsp  <% Runtime rtm = Runtime.getRuntime(); long mm = rtm.maxMemory()/1024/1024; long tm = rtm.totalMemory()/1024/1024; long fm = rtm.freeMemory()/1024/1024;  out.println("JVM memory detail info :<br>"); out.println("Max memory:"+mm+"MB"+"<br>"); out.println("Total memory:"+tm+"MB"+"<br>"); out.println("Free memory:"+fm+"MB"+"<br>"); out.println("Available memory can be used is :"+(mm+fm-tm)+"MB"+"<br>"); %> 

站点部署

[root@test.com webapps]# ls docs  examples  host-manager  logs  manager  memtest  memtest.war  ROOT 

2、自定义默认网站目录
方法一

• 将 meminfo.jsp 或其他程序放在 tomcat/webapps/ROOT目录下即可。因为默认网站根目录为 tomcat/webapps/ROOT

方法二

[root@test.com ~]# vim /usr/local/tomcat/conf/server.xml +125 …… #添加上这两行         <Context path="" docBase="/usr/local/tomcat/webapps/memtest" debug="0" reloadable="false" crossContext="true"/> <Context path="/40team" docBase="/usr/local/tomcat/webapps/memtest" debug="0" reloadable="false" crossContext="true"/> …… 

修改配置文件后，要重启服务

[root@test.com ~]# /usr/local/tomcat/bin/shutdown.sh  [root@test.com ~]# /usr/local/tomcat/bin/startup.sh  

7、Tomcat 多实例配置
多虚拟主机：nginx 多个Server标签（域名，ip，端口） 进程数量固定 master+worker

多实例（多进程）：同一个程序启动多次，分为两种情况:

第一种：一台机器跑多个站点；

第二种：一个机器跑一个站点多个实例，配合负载均衡

1、复制程序文件

[root@test.com ~]# cd /usr/local/tools/ [root@test.com ~]# tar xf apache-tomcat-8.0.27.tar.gz [root@test.com ~]# cp -a apache-tomcat-8.0.27 tomcat8_1 [root@test.com ~]# cp -a apache-tomcat-8.0.27 tomcat8_2 

2、修改端口，以启动多实例。多实例之间端口不能一致

[root@test.com ~]# sed -i 's#8005#8011#;s#8080#8081#' tomcat8_1/conf/server.xml [root@test.com ~]# sed -i 's#8005#8012#;s#8080#8082#' tomcat8_2/conf/server.xml [root@test.com application]# diff tomcat8_1/conf/server.xml tomcat8_2/conf/server.xml 22c22 < <Server port="8011" shutdown="SHUTDOWN"> --- > <Server port="8012" shutdown="SHUTDOWN"> 67c67 <          Define a non-SSL/TLS HTTP/1.1 Connector on port 8081 --- >          Define a non-SSL/TLS HTTP/1.1 Connector on port 8082 69c69 < <Connector port="8081" protocol="HTTP/1.1" --- > <Connector port="8082" protocol="HTTP/1.1" 75c75 <                port="8081" protocol="HTTP/1.1" --- >                port="8082" protocol="HTTP/1.1" 

3、将配置好的tomcat程序打包，以备之后使用

[root@test.com ~]# tar zcf muti_tomcat8.tar.gz ./tomcat8_1 ./tomcat8_2 

4、启动tomcat多实例

[root@test.com ~]# /usr/local/tomcat8_1/bin/startup.sh  [root@test.com ~]# /usr/local/tomcat8_2/bin/startup.sh 

5、检查端口是否启动

[root@test.com tomcat8_1]# netstat -lntup |grep java tcp6   0 0 127.0.0.1:8011 :::*    LISTEN   31906/java tcp6   0 0 127.0.0.1:8012 :::*    LISTEN   31932/java tcp6   0 0 :::8080 :::*    LISTEN   31812/java tcp6   0 0 :::8081 :::*    LISTEN   31906/java tcp6   0 0 :::8082 :::*    LISTEN   31932/java tcp6   0 0 127.0.0.1:8005 :::*    LISTEN   31812/java tcp6   0 0 :::8009 :::*    LISTEN   31812/java 

6、将每个实例的网页进行区分

[root@test.com ~]# echo 8081 >>/usr/local/tomcat8_1/webapps/ROOT/index.jsp  [root@test.com ~]# echo 8082 >>/usr/local/tomcat8_2/webapps/ROOT/index.jsp 

7、在浏览器访问，进行测试
使用curl 命令进行测试，awk 进行关键字提取

[root@test.com ~]# curl -s 10.0.0.5|awk 'END{print}' 8082 [root@test.com ~]# curl -s 10.0.0.5|awk 'END{print}' 8081