启用manager
1.打开conf目录下的文件 tomcat-users.xml，在尾部添加一下内容:
<role rolename="tomcat"/>
<role rolename="role1"/>
<role rolename="manager-script"/>
<role rolename="manager-gui"/>
<role rolename="manager-status"/>
<role rolename="admin-gui"/>
<role rolename="admin-script"/>
<user username="tomcat" password="tomcat" roles="manager-gui,manager-script,tomcat,admin-gui,admin-script"/>2.修改webapps文件夹manager和host-mananger两个项目下META-INF中的context.xml文件：
vim /usr/local/tomcat/apache-tomcat-9.0.27/webapps/host-manager/META-INF
vim /usr/local/tomcat/apache-tomcat-9.0.27/webapps/manager/META-INF/context.xml修改为（或者注释掉）：
<Valve className="org.apache.catalina.valves.RemoteAddrValve" allow="^.*$" />无须重启tomcat即可生效
配置日志打印
打开conf目录下的文件 logging.properties；修改以下内容
1catalina.org.apache.juli.AsyncFileHandler.level = FINE
1catalina.org.apache.juli.AsyncFileHandler.directory = ${catalina.base}/logs
1catalina.org.apache.juli.AsyncFileHandler.prefix = catalina.
1catalina.org.apache.juli.AsyncFileHandler.maxDays = 7
1catalina.org.apache.juli.AsyncFileHandler.formatter = java.util.logging.SimpleFormatter
2localhost.org.apache.juli.AsyncFileHandler.level = FINE
2localhost.org.apache.juli.AsyncFileHandler.directory = ${catalina.base}/logs
2localhost.org.apache.juli.AsyncFileHandler.prefix = localhost.
2localhost.org.apache.juli.AsyncFileHandler.maxDays = 7
2localhost.org.apache.juli.AsyncFileHandler.formatter = java.util.logging.SimpleFormatter
3manager.org.apache.juli.AsyncFileHandler.level = FINE
3manager.org.apache.juli.AsyncFileHandler.directory = ${catalina.base}/logs
3manager.org.apache.juli.AsyncFileHandler.prefix = manager.
3manager.org.apache.juli.AsyncFileHandler.maxDays = 7
3manager.org.apache.juli.AsyncFileHandler.formatter = java.util.logging.SimpleFormatter
4host-manager.org.apache.juli.AsyncFileHandler.level = FINE
4host-manager.org.apache.juli.AsyncFileHandler.directory = ${catalina.base}/logs
4host-manager.org.apache.juli.AsyncFileHandler.prefix = host-manager.
4host-manager.org.apache.juli.AsyncFileHandler.maxDays = 7
4host-manager.org.apache.juli.AsyncFileHandler.formatter = java.util.logging.SimpleFormatter
java.util.logging.ConsoleHandler.level = FINE
java.util.logging.ConsoleHandler.formatter = org.apache.juli.OneLineFormatter
java.util.logging.SimpleFormatter.format = %1$tY-%1$tm-%1$td %1$tH:%1$tM:%1$tS.%1$tL [%4$s] [%3$s] %2$s %5$s %6$s%n配置日志存储
<Host name="localhost" appBase="webapps" unpackWARs="true" autoDeploy="true">
<Valve className="org.apache.catalina.authenticator.SingleSignOn" />
<Valve className="org.apache.catalina.valves.AccessLogValve"
directory="logs/localhost_access_log" prefix="localhost_access_log" suffix=".txt"
pattern="%h %l %u %t "%r" %s %b" />
</Host>