rpm -ivh
wget http://mirrors.tuna.tsinghua.edu.cn/apache/tomcat/tomcat-9/v9.0.27/bin/apache-tomcat-9.0.27.tar.gz tar xvf apache-tomcat-9.0.27.tar.gz -C /opt
https://jingyan.baidu.com/article/fea4511a1c624ef7bb9125ec.html
/opt/tomcat9/conf/tomcat-users.xml
<role rolename="manager-gui"/>
<role rolename="manager-script"/>
<role rolename="manager-jmx"/>
<role rolename="manager-status"/>
<user username="tomcat" password="123456" roles="manager-gui,manager-script,manager-jmx,manager-status"/>