day11-tomcat service-one (installation, web deployment, optimization)

Note: knowledge comes from ob

One, install jdk and tomcat

#安装jdk

tar -xf jdk-8u45-linux-x64.tar.gz -C /application
ln -s /application/jdk1.8.0_281/ /application/jdk

#配置环境变量
cat >>/etc/profile<<'EOF'
export JAVA_HOME=/application/jdk
export CLASSPATH=.:${JAVA_HOME}/jre/lib/rt.jar:${JAVA_HOME}/lib/dt.jar:${JAVA_HOME}/lib/tools.jar
export PATH=$PATH:${JAVA_HOME}/bin

export TOMCAT_HOME=/application/tomcat
EOF

source /etc/profile
java -version

Explanation of'EOF':

1，你用-eof，真的测试了有效吗
2，确定eof要用单引号还是双引号，单引号，会让变量保留到远程主机上解析；双引号，会让变量在本机解析

#A little special jdk after decompression, their users and user groups are displayed as numbers, you can directly modify the permissions to chown -R root.root /application/jdk

#安装tomcat
tar xf apache-tomcat-8.5.63.tar.gz -C /application/
ln -s /application/apache-tomcat-8.5.63/ /application/tomcat
#查看版本信息
/application/tomcat/bin/version.sh

1.1 tomcat service management

#启动tomcat
/application/tomcat/bin/startup.sh
ss -lntup | grep java

1.2tomcat catalog description

1.3 tomcat management terminal

Modify conf/tomcat-users.xml

<?xml version="1.0" encoding="UTF-8"?>
<tomcat-users xmlns="http://tomcat.apache.org/xml"
              xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
              xsi:schemaLocation="http://tomcat.apache.org/xml tomcat-users.xsd"
              version="1.0">
  <role rolename="manager-gui"/>
  <role rolename="admin-gui"/>
  <user username="tomcat" password="tomcat" roles="manager-gui,admin-gui"/>
</tomcat-users>

#关闭 再启动tomcat
/application/tomcat/bin/shutdown.sh
ps -ef | grep java
/application/tomcat/bin/startup.sh

In tomcat 8.5, the management side is more stringent, and it will continue to be modified :
he currently only allows 127 segments to be accessed, using regular PCRE. Modify the file found below, change 127 to \d+ or specify the network segment number. After the change, find to check again. Restart tomcat

[root@lvs1-138 tomcat]# find -type f -name "*.xml" | xargs grep '127'
./webapps/host-manager/META-INF/context.xml:         allow="127\.\d+\.\d+\.\d+|::1|0:0:0:0:0:0:0:1" />
./webapps/host-manager/WEB-INF/manager.xml:         allow="127\.\d+\.\d+\.\d+|::1|0:0:0:0:0:0:0:1" />
./webapps/manager/META-INF/context.xml:         allow="127\.\d+\.\d+\.\d+|::1|0:0:0:0:0:0:0:1" />

Original:

Modified:

At this time, click the three buttons such as Status Server and enter the account password tomcat / tomcat to access

1.4 tomcat log (catalina.out)

catalina.out和catalina.日期.log
catalina.out在被切割后内容不会被清空|

1.5 tomcat deployment application and method

1. If the war package is developed for you , put the war package into the tomcat webapps for automatic decompression and automatic deployment.
2. If the development for you is a jar package , it is equivalent to putting tomcat into the jar.
Run the jar package instruction: java -jar xxxx.jar
3. The default web path is /application/tomcat/webapps/

Upload a jpress.war

cp /app/tools/jpress.war /application/tomcat/webapps/
#此时会自动解压

Install jpress

Install MariaDB "https://www.cnblogs.com/yhongji/p/9783065.html"

create database jpress charset utf8;
grant all on jpress.* to jpress@'localhost' identified by '123456';
grant all on jpress.* to jpress@'192.168.%.%' identified by '123456';

select user,host from mysql.user;

Windows webpage visit 192.168.26.138:8080/jpress to install



http://192.168.26.138:8080/jpress/admin/index (management side)
http://192.168.26.138:8080/jpress/ (website homepage)
database configuration file : Jboot.properties (generally called db.properties)

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Two, tomcat configuration file server.xml

/application/tomcat/conf/server.xml

一、
<Server port="8005" shutdown="SHUTDOWN">
tomcat关闭端口 ，当telnet 127.0.0.1 8005 ，输入SHUTDOWN后，tomcat就被关闭了（生产环境需改变端口，以及shutdown=""的值， 如shutdown="OBSHUTDOWN"）

二、
用户管理端 认证模式 用户名密码模式

 <GlobalNamingResources>
      <Resource name="UserDatabase" auth="Container"
              type="org.apache.catalina.UserDatabase"
              description="User database that can be updated and saved"
              factory="org.apache.catalina.users.MemoryUserDatabaseFactory"
              pathname="conf/tomcat-users.xml" />  用户管理配置文件
  </GlobalNamingResources>

三、
web端口
<Connector port="8080" protocol="HTTP/1.1"
               connectionTimeout="20000"
               redirectPort="8443" />

指定的web站点目录。
appBase：这个目录下面的子目录将自动被部署为应用，且war文件将被自动解压缩并部署为应用，默认为tomcat下webapps目录，如果不想访问默认ROOT目录，修改这里，同理如果想访问配置目录下应用为默认应用，在此目录下新增ROOT目录文件夹。
<Host name="localhost"  appBase="webapps"
            unpackWARs="true" autoDeploy="true">

Configure the <host> content of the tomcat virtual host (equivalent to the nginx server{} module).
When accessing 192.168.26.138:8080, the jsp page he will access is as follows:

https://www.cnblogs.com/wei-lai/p/6249595.html "The relationship between tomcat-ROOT and webapps, some questions about deployment"

Three, server.xml optimization parameters

original:

<Connector port="8080" protocol="HTTP/1.1"
               connectionTimeout="20000"
               redirectPort="8443" />

Modified:

 <Connector port="8080" protocol="HTTP/1.1"
               maxThreads="500"  #最大线程数量 200~400之间 ，但不是越大越好，比如有次设置了3000，但一般是2000出头，单次请求的响应时间会急剧增加。
               acceptCount="500"  #一般与maxThreads一直
               minSpareThreads="10" #空闲时候 最小的线程数量
               enableLookups="false" #禁止DNS逆向查询 route -n  , arp -n
               
               compression="on"  #开启压缩，静态资源html js css
               compressionMinSize="2048"  #压缩文件 最小2048字节
               #压缩哪些类型的文件
               compressableMimeType="text/html,text/plain,text/css,application/javascript,application/json,application/x-font-ttf,application/x-font-otf"
               disableUploadTimeout="true" #关闭上传时间超时
               
               acceptorThreadCount="2" #用于接收连接的线程的数量，默认值是1。如果是多核 CPU 一般配置为 2.
                                             
               connectionTimeout="20000"
               redirectPort="8443" />

About the explanation of compressionMinSize="2048" above

Four, JVM optimization parameters

4.1 java startup parameters (catalina.sh)

/application/tomcat/bin/catalina.sh, insert approximately at line 112

JAVA_OPTS='-Xms1024m -Xmx1024m -Xloggc:/var/log/tomcat_gc.log'

Optimized: There is also annotated AJP port 8009

4.2 Optimization for jar package startup

For the jar package:

java -jar xxx.jar -Xms1024m -Xmx1024, -Xloggc:/var/log/tomcat_gc.log

5. Security optimization (abbreviated)

split line

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