1.Guacamole一基于HTML5的远程桌面控制框架，性能较高，官方说接近于原生的VNC。具体介绍及安装方法，见http://guac-dev.org/
2.本文使用Guacamole远程访问KVM虚拟机，这需要对/etc/guacamole/user-mapping.xml配置，指定运行的各KVM虚拟机的端口。
3.在一个云计算项目中，需要整合该框架，达到访问虚拟机的时候不要再次验证。如：http://192.168.32.107:8080/guacamole/?port=5901，其中port为要访问的kvm虚拟机的端口。
a. 修改tomcat/webapps/guacamole的index.xhtml
function loginAuto(){
var port=window.location.search;
if(port=="")return;
port=port.substring(6);
var username = port;
var password = port;
var data =
"username=" + encodeURIComponent(port)
+ "&password=" + encodeURIComponent(port)
try {
// Log in
var xhr = new XMLHttpRequest();
xhr.open("POST", "login", false);
xhr.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
xhr.send(data);
// Handle failures
if (xhr.status != 200)
throw new Error("Invalid login");
resetUI();
}
catch (e) {
var loginError = document.getElementById("login-error");
// Display error, reset and refocus password field
loginError.textContent = e.message;
password.value = "";
password.focus();
return false;
}
// On success, hide loginUI, get and show connection list.
return false;
}
<body onload="loginAuto()">...</body>
b.修改user-mapping.xml，授权
<authorize password="5901" username="5901"> <protocol>vnc</protocol> <param name="hostname">localhost</param> <param name="port">5901</param> <param name="password">VNCPASS</param> </authorize> <authorize password="5910" username="5910"> <protocol>vnc</protocol> <param name="hostname">localhost</param> <param name="port">5910</param> <param name="password">VNCPASS</param> </authorize>