Tomcat中CATALINA_HOME和CATALINA_BASE的区别

本说明针对Tomcat7。此处记录以作备查。

1、CATALINA_HOME和CATALINA_BASE的定义

官方说明：

• CATALINA_HOME:Represents the root of your Tomcat installation, for example /home/tomcat/apache-tomcat-9.0.10 or C:\Program Files\apache-tomcat-9.0.10.
• CATALINA_BASE:Represents the root of a runtime configuration of a specific Tomcat instance. If you want to have multiple Tomcat instances on one machine, use the CATALINA_BASE property.

If you set the properties to different locations, the CATALINA_HOME location contains static sources, such as .jar files, or binary files. The CATALINA_BASE location contains configuration files, log files, deployed applications, and other runtime requirements.

由此可知：

CATALINA_HOME：代表Tomcat安装的根路径。

CATALINA_BASE：代表特定的Tomcat实例在运行时配置的根路径。如果希望在一台计算机上有多个Tomcat实例，请使用CATALINA_BASE属性。

更进一步，如果你设置了CATALINA_HOME和CATALINA_BASE两个属性，并且两个属性代