阿里云centos7.x安装jdk+tomcat

阿里云centos7.x安装jdk+tomcat

安装过程需要root权限登陆

1.安装java

在安装tomcat之前需要安装java se，这里使用yum工具安装jdk运行时环境

yum install java-1.8.0-openjdk.x86_64

查看java是否安装成功

java -version

此时应该输出

openjdk version "1.8.0_161"
OpenJDK Runtime Environment (build 1.8.0_161-b14)
OpenJDK 64-Bit Server VM (build 25.161-b14, mixed mode)

2.为tomcat创建一个专用用户

groupadd tomcat
useradd -s /bin/nologin -g tomcat -d /opt/tomcat tomcat

3.下载和安装Apcahe Tomcat

cd ~
wget http://www-us.apache.org/dist/tomcat/tomcat-8/v8.0.50/bin/apache-tomcat-8.0.50.tar.gz
tar -zxvf apache-tomcat-8.0.50.tar.gz -C /opt/tomcat --strip-components=1

4.设置权限

cd /opt/tomcat
chgrp -R tomcat conf
chmod g+rwx conf
chmod g+r conf/*
chown -R tomcat logs/ temp/ webapps/ work/
chgrp -R tomcat bin
chgrp -R tomcat lib
chmod g+rwx bin
chmod g+r bin/*

5.为tomcat创建一个System unit文件

vim /etc/systemd/system/tomcat.service

将下列代码复制进去

[Unit]
Description=Apache Tomcat Web Application Container
After=syslog.target network.target

[Service]
Type=forking

Environment=JAVA_HOME=/usr/lib/jvm/jre
Environment=CATALINA_PID=/opt/tomcat/temp/tomcat.pid
Environment=CATALINA_HOME=/opt/tomcat
Environment=CATALINA_BASE=/opt/tomcat
Environment='CATALINA_OPTS=-Xms512M -Xmx1024M -server -XX:+UseParallelGC'
Environment='JAVA_OPTS=-Djava.awt.headless=true -Djava.security.egd=file:/dev/./urandom'

ExecStart=/opt/tomcat/bin/startup.sh
ExecStop=/bin/kill -15 $MAINPID

User=tomcat
Group=tomcat

[Install]
WantedBy=multi-user.target

输入 :wq保存退出

6.安装haveged（出于安全的考虑）

yum install haveged
systemctl start haveged.service
systemctl enable haveged.service

7.开始测试apche tomcat

systemctl start tomcat.service
systemctl enable tomcat.service

为了在浏览器中测试tomcat，需要修改firewall规则

firewall-cmd --zone=public --permanent --add-port=8080/tcp
firewall-cmd --reload

在浏览器输入http://your-server-ip:8080测试

（如果是阿里云，需要打开安全组策略的8080端口）

如下图：

测试页面成功页面：