Tomcat开启远程管理Manager App

1.修改/user/local/tomcat/conf/context.xml
将context的如下内容删除
<Context>
<!--
　　<!-- Default set of monitored resources. If one of these changes, the -->
　　<!-- web application will be reloaded. -->
　　<WatchedResource>WEB-INF/web.xml</WatchedResource>
　　<WatchedResource>${catalina.base}/conf/web.xml</WatchedResource>

　　<!-- Uncomment this to disable session persistence across Tomcat restarts -->
　　<!--
　　<Manager pathname="" />
　　-->
-->
</Context>

修改context的内容如下：
<Context antiResourceLocking="false" privileged="true" >
　　<Valve className="org.apache.catalina.valves.RemoteAddrValve"
　　　　　　allow="^.*$" />
</Context>

2.在/usr/local/tomcat/conf/tomcat-users.xml文件末尾增加如下角色及用户
<role rolename="manager"/>
<role rolename="manager-gui"/>
<role rolename="admin"/>
<role rolename="admin-gui"/>
<role rolename="manager-script"/>
<user username="tomcat" password="tomcat" roles="admin-gui,admin,manager-gui,manager,manager-script"/>

3.配置远程访问manager
在/usr/local/tomcat/conf 目录下的Catalina/localhost目录下新建一个manager.xml文件，写入如下内容：

<Context privileged="true" antiResourceLocking="false"
　　　　docBase="${catalina.home}/webapps/manager">
　　<Valve className="org.apache.catalina.valves.RemoteAddrValve" allow="^.*$" />
</Context>

4.然后重启tomcat，登录web管理页面

如果需要访问host-manager，则要修改如下的内容：

vi /usr/local/tomcat/webapps/host-manager/META-INF/context.xml
<Context antiResourceLocking="false" privileged="true" >
　　<CookieProcessor className="org.apache.tomcat.util.http.Rfc6265CookieProcessor"
　　　　　　sameSiteCookies="strict" />
　　<Valve className="org.apache.catalina.valves.RemoteAddrValve"
　　　　　　allow="\d+\.\d+\.\d+\.\d+|::1|0:0:0:0:0:0:0:1" />
　　<Manager sessionAttributeValueClassNameFilter="java\.lang\.(?:Boolean|Integer|Long|Number|String)|org\.apache\.catalina\.filters\.CsrfPreventionFilter\$LruCache(?:\$1)?|java\.util\.(?:Linked)?HashMap"/>

</Context>