Before installing tomcat must first install and configure Java JDK corresponding environment

A. Environmental preparation

JDK version: 12.0.1
Second, check the JDK version of the system

1. Enter the command: java -version

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Linux Tomcat installation and configuration services

2. Check the installation package JDK

    输入命令：rpm -qa | grep java

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Linux Tomcat installation and configuration services

3. Uninstall openjdk

Linux Tomcat installation and configuration services

  或者使用命令：yum remove *openjdk*

III. Install the new JDK

1. Create a directory java jdk installation directory under / usr / directory

mkdir  /usr/local/java

2. Use wget to download the installation package

 wget  https://download.oracle.com/otn-pub/java/jdk/12.0.1
    +12/69cfe15208a647278a19ef0990eea691/jdk-12.0.1_
    linux-x64_bin.tar.gz

 会发现报错，是因为在Oracle官网上下载jdk，需要点击
     accept licence的才能下载，所以要输下面的命令：

     wget --no-check-certificate --no-cookies --header 
     "Cookie:oraclelicense=accept-securebackup-cookie" 
     https://download.oracle.com/otn-pub/java/jdk/12.0.1+
     12/69cfe15208a647278a19ef0990eea691/jdk-12.0.1_
     linux-x64_bin.tar.gz

      注意 : 记住需要加上：--no-check-certificate --no-cookies
        --header "Cookie: oraclelicense=accept-securebackup
        -cookie"    这段是为了避开用户验证用的

3. Extract the installation package

 tar -zxvf jdk-12.0.1_linux-x64_bin.tar.gz

4. Configure Environment Variables

vim /etc/profle

Linux Tomcat installation and configuration services

5. Execute the Profile file

Source / etc / Profile
6. The check the newly installed JDK

java -version

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installation and configuration of Linux Tomcat services

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Tomcat installation

A. Download the Tomcat installation package

Into the official website
http://tomcat.apache.org
2. Download

Linux Tomcat installation and configuration services
to install and configure Linux Tomcat services
after the download is good, uploaded to a virtual machine / usr / local

3. Extract Tomcat

Apache Tomcat---zxvf the tar 9.0.21.tar.gz
4. modify the file name tomcat9

mv apache-tomcat-9.0.21 tomcat9
5.启动Tomcat

tomcat9 CD / bin
./startup.sh
6. The firewall settings

Firewall open port 8080, added to the firewall configuration
/ sbin / iptables -I -p TCP --dport the INPUT 8080 -j ACCEPT
7. The reboot

./startup.sh
8.IP + 8080 port

Linux Tomcat installation and configuration services