以local模式使用Xshell+Xmanager远程监控jvisualvm     

使用jvisualvm的remote方式监控服务器端jvisualvm时,不是很方便,因此通过local方式,应该是正路。

一、服务器端(Linux,最小安装模式,没有图形界面)

1.安装xauth

如果在Xshell中配置了X11转发后,出现如下提示:

WARNING! The remote SSH server rejected X11 forwarding request.

则需要查看/etc/ssh/sshd_config中以下选项是否为yes,

X11Forwarding yes

如果设置没问题,连接时仍报上述提示,则需要安装xauth(使用微软Azure时,最小化安装Linux,默认没有xauth)

yum install xorg-x11-xauth

2.安装xhost

如果执行xhost +命令,提示xhost命令找不到,则还需要安装xhost,否则略过此步:

[teld@T-SHA1-FLK-01 ~]$ xhost +
-bash: xhost: command not found

查看谁提供了xhost:

teld@T-SHA1-FLK-01 ~]$ yum provides xhost
Loaded plugins: fastestmirror, langpacks
Determining fastest mirrors
xorg-x11-server-utils-7.7-20.el7.x86_64 : X.Org X11 X server utilities
Repo : base
Matched from:
Provides : xhost = 1.0.7

从列表中选择安装:

[teld@T-SHA1-FLK-01 ~]$ yum install xorg-x11-server-utils-7.7-20.el7.x86_64
[teld@T-SHA1-FLK-01 ~]$ xhost +
access control disabled, clients can connect from any host

3.检查$DISPLAY是否有值

[teld@T-SHA1-FLK-01 ~]$ echo $DISPLAY
localhost:10.0

二、客户端(Windows)

1.安装Xshell

2.安装Xmanager

Xmanager会把X DISPLAY选项自动查找为Xshell

3.配置Xshell 猿天地博客图片

三、使用步骤

1.Xshell连接远程服务器

2.在Xshell中启动xhost +,以便在客户端开启xserver

[teld@T-SHA1-FLK-01 ~]$ xhost +
access control disabled, clients can connect from any host

如果客户端的xmanager没开的话,这时会发现客户端的xmanager会被拉起来了

3.在Xshell中启动jvisualvm

[teld@T-SHA1-FLK-01 ~]$ jvisualvm

这时会发现jvisualvm在xmanager里出现了:

四、遇到的坑

如果执行jvisualvm时,未能弹出性能监控画面,可以查看VisualVM的日志: 猿天地博客图片 切换到指定日志下,查看日志内容,发现是:

java.lang.UnsatisfiedLinkError: /usr/java/jdk1.8.0_131/jre/lib/amd64/libawt_xawt.so: 
libXtst.so.6: cannot open shared object file: No such file or directory
    at java.lang.ClassLoader$NativeLibrary.load(Native Method)
    at java.lang.ClassLoader.loadLibrary0(ClassLoader.java:1941)
    at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1824)
    at java.lang.Runtime.load0(Runtime.java:809)
    at java.lang.System.load(System.java:1086)
    at java.lang.ClassLoader$NativeLibrary.load(Native Method)
    at java.lang.ClassLoader.loadLibrary0(ClassLoader.java:1941)
    at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1845)
    at java.lang.Runtime.loadLibrary0(Runtime.java:870)
    at java.lang.System.loadLibrary(System.java:1122)
    at sun.awt.X11GraphicsEnvironment$1.run(X11GraphicsEnvironment.java:77)
    at java.security.AccessController.doPrivileged(Native Method)
    at sun.awt.X11GraphicsEnvironment.<clinit>(X11GraphicsEnvironment.java:74)
    at java.lang.Class.forName0(Native Method)
    at java.lang.Class.forName(Class.java:264)
    at java.awt.GraphicsEnvironment.createGE(GraphicsEnvironment.java:103)
    at java.awt.GraphicsEnvironment.getLocalGraphicsEnvironment(GraphicsEnvironment.java:82)
    at org.netbeans.core.startup.Main.start(Main.java:214)
    at org.netbeans.core.startup.TopThreadGroup.run(TopThreadGroup.java:84)
    at java.lang.Thread.run(Thread.java:748)

根据提示,发现需要安装libXtst

[teld@T-SHA1-FLK-02 ~]$ yum install libXtst

问题解决。

网上也有建议需要安装三个:

#yum install libXp
#yum install libXt
#yum install libXtst

转载自:https://www.cnblogs.com/liugh/p/7630081.html