0
我已经安装在Ubuntu 15.10 tomcat8经理桂和我平时的欢迎画面，当我去：无法访问tomcat8
http://myhost:8082/
（我重新配置的端口8082在server.xml中）。
但我不能在访问管理器GUI：
http://myhost:8082/manager/html
我试图在/etc/tomcat8/tomcat-users.xml文件，然后tomcat8与重新启动以下：
sudo /etc/init.d/tomcat8 restart
下面是我曾尝试编辑：
1）
<role rolename="manager-gui"/>
<user username="admin" password="12345" roles="manager-gui"/>
2）
<user username="user" password="password" roles="admin-gui,manager-gui" />
我发现了其他SO帖子和博客描述每一个新的方式，使配置的用户/角色，但他们没有工作。相反，我不断收到：
cat catalina.out
INFO: Starting service Catalina
Apr 27, 2016 10:36:32 PM org.apache.catalina.core.StandardEngine startInternal
INFO: Starting Servlet Engine: Apache Tomcat/8.0.26 (Ubuntu)
Apr 27, 2016 10:36:32 PM org.apache.catalina.startup.HostConfig deployDirectory
INFO: Deploying web application directory /var/lib/tomcat8/webapps/ROOT
Apr 27, 2016 10:36:32 PM org.apache.catalina.core.StandardContext setPath
WARNING: A context path must either be an empty string or start with a '/' and do not end with a '/'. The path [/] does not meet these criteria and has been changed to []
Apr 27, 2016 10:36:34 PM org.apache.jasper.servlet.TldScanner scanJars
INFO: At least one JAR was scanned for TLDs yet contained no TLDs. Enable debug logging for this logger for a complete list of JARs that were scanned but no TLDs were found in them. Skipping unneeded JARs during scanning can improve startup time and JSP compilation time.
Apr 27, 2016 10:37:36 PM org.apache.catalina.util.SessionIdGeneratorBase createSecureRandom
INFO: Creation of SecureRandom instance for session ID generation using [SHA1PRNG] took [61,847] milliseconds.
Apr 27, 2016 10:37:36 PM org.apache.catalina.startup.HostConfig deployDirectory
INFO: Deployment of web application directory /var/lib/tomcat8/webapps/ROOT has finished in 63,602 ms
Apr 27, 2016 10:37:36 PM org.apache.coyote.AbstractProtocol start
INFO: Starting ProtocolHandler ["http-nio-8082"]
Apr 27, 2016 10:37:36 PM org.apache.catalina.startup.Catalina start
INFO: Server startup in 63722 ms