install script for tomcat 8.5 on centos 7

install_tomcat8.5-centos.sh

sudo yum -y install java-1.8.0-openjdk-devel
yum install -y wget unzip
sudo useradd -m -U -d /opt/tomcat -s /bin/false tomcat
cd /tmp
wget http://apache.panu.it/tomcat/tomcat-8/v8.5.31/bin/apache-tomcat-8.5.31.zip


unzip apache-tomcat-*.zip
sudo mv apache-tomcat-*/ /opt/tomcat/
sudo chown -R tomcat: /opt/tomcat
sudo chmod +x /opt/tomcat/bin/*.sh

echo "[Unit]
Description=Tomcat 8.5 servlet container
After=network.target

[Service]
Type=forking

User=tomcat
Group=tomcat

Environment="JAVA_HOME=/usr/lib/jvm/jre"
Environment="JAVA_OPTS=-Djava.security.egd=file:///dev/urandom"

Environment="CATALINA_BASE=/opt/tomcat/"
Environment="CATALINA_HOME=/opt/tomcat/"
Environment="CATALINA_PID=/opt/tomcat/temp/tomcat.pid"
Environment="CATALINA_OPTS=-Xms512M -Xmx1024M -server -XX:+UseParallelGC"

ExecStart=/opt/tomcat/bin/startup.sh
ExecStop=/opt/tomcat/bin/shutdown.sh

[Install]
WantedBy=multi-user.target" > /etc/systemd/system/tomcat.service

sudo systemctl daemon-reload