Java VisualVM对tomcat性能监控
[*] Java环境参考：http://visitor.blog.运维网.com/11247238/1956799
[*] Tomcat部署参考：http://visitor.blog.运维网.com/11247238/1956809
[*] 从官网下载Tomcat对应版本的catalina-jmx-remote.jar（这个使用Tomcat 7.0.81版本）
Tomcat下载地址：http://mirrors.tuna.tsinghua.edu.cn/apache/tomcat/tomcat-7/v7.0.81/bin/apache-tomcat-7.0.81.tar.gz
JMX下载地址：http://mirrors.tuna.tsinghua.edu.cn/apache/tomcat/tomcat-7/v7.0.81/bin/extras/catalina-jmx-remote.jar
catalina-jmx-remote.jar包下载完成后放到Tomcat的lib目录下
# pwd
/usr/local/tomcat/lib
# wget
[*] 在bin/catalina.sh添加如下内容（Windows环境catalina.bat文件）
# cd /usr/local/tomcat/bin/
# vim catalina.sh
CATALINA_OPTS="$CATALINA_OPTS -Dcom.sun.management.jmxremote
-Dcom.sun.management.jmxremote.port=7090
-Dcom.sun.management.jmxremote.ssl=false
-Djava.rmi.server.hostname=192.168.100.1
-Dcom.sun.management.jmxremote.authenticate=true
-Dcom.sun.management.jmxremote.password.file=/usr/local/softinstall/tomcat/conf/jmxremote.password
-Dcom.sun.management.jmxremote.access.file=/usr/local/softinstall/tomcat/conf/jmxremote.access"
[*] 编辑访问授权文件
# cd /usr/local/tomcat/conf/
# vim jmxremote.access
# cat jmxremote.access
monitorRole readonly
controlRole readwrite
[*] 编辑密码文件
# vim jmxremote.password
# cat jmxremote.password
monitorRole tomcat
controlRole tomcat 注意：密码文件应该是只读的，只能由Tomcat运行用户。
更改密码文件权限，否则汇报如下错误：
Error: Password file read access must be restricted: /usr/local/tomcat/conf/jmxremote.password
# chmod 0400 jmxremote.password
# ll jmxremote.password
-r-------- 1 root root 36 Aug 25 15:47 jmxremote.password
[*] 启动Tomcat
# ../bin/startup.sh
Using CATALINA_BASE: /usr/local/softinstall/tomcat
Using CATALINA_HOME: /usr/local/softinstall/tomcat
Using CATALINA_TMPDIR: /usr/local/softinstall/tomcat/temp
Using JRE_HOME: /usr/local/softinstall/jdk1.7.0_79
Using CLASSPATH: /usr/local/softinstall/tomcat/bin/bootstrap.jar:/usr/local/softinstall/tomcat/bin/tomcat-juli.jar
Tomcat started.
# netstat -nlput | grep java
tcp 0 0 :::7090 :::* LISTEN 7329/java
tcp 0 0 ::ffff:127.0.0.1:7005 :::* LISTEN 7329/java
tcp 0 0 :::7080 :::* LISTEN 7329/java
# curl -I localhost:7080
HTTP/1.1 200 OK
Server: Apache-Coyote/1.1
Content-Type: text/html;charset=ISO-8859-1
Transfer-Encoding: chunked
Date: Fri, 25 Aug 2017 08:58:54 GMT Tomcat启动成功、JMX7090端口启动成功
[*] 在一台windows服务器上部署Java环境
在Jdk的安装目录bin目录下找到jvisualvm.exe （另一个工具为jconsole.exe也在bin目录下，这里使用jvisualvm工具）
C:\Program Files\Java\jdk1.8.0_131\bin
https://s3.运维网.com/wyfs02/M00/A2/78/wKioL1mf6Z2ytYrJAADC2ohbj4s480.jpg-wh_500x0-wm_3-wmp_4-s_1314896248.jpg
双击运行jvisualvm.exe
https://s4.运维网.com/wyfs02/M02/03/C7/wKiom1mf6jKDPtdAAAAbGcLCins603.jpg-wh_500x0-wm_3-wmp_4-s_706599865.jpg
https://s1.运维网.com/wyfs02/M00/A2/78/wKioL1mf6nDjKr-WAACnbAiX7lY771.jpg-wh_500x0-wm_3-wmp_4-s_2145157048.jpg
点击——远程——添加远程主机——在弹出的窗口中填写要远程主机的名——点击确定
https://s2.运维网.com/wyfs02/M00/03/C7/wKiom1mf6v-Qqv09AACgpNLyihM519.jpg-wh_500x0-wm_3-wmp_4-s_1983075860.jpg
https://s1.运维网.com/wyfs02/M00/A2/78/wKioL1mf63GigLO6AAAiwF6i5Dk147.jpg-wh_500x0-wm_3-wmp_4-s_2837475768.jpg
应用程序——远程——选择之间添加的主机——右击——添加jmx连接——在弹出的窗口中填写连接信息——确定
https://s1.运维网.com/wyfs02/M00/A2/78/wKioL1mf7KLB99viAADIPT6-AkI267.jpg-wh_500x0-wm_3-wmp_4-s_1336561194.jpg
https://s4.运维网.com/wyfs02/M00/03/C8/wKiom1mf7czTo1dTAADn3he54T4836.jpg-wh_500x0-wm_3-wmp_4-s_1926640504.jpg
连接成功
https://s5.运维网.com/wyfs02/M02/A2/78/wKioL1mf7s7zlupPAAEFW0ySp_g323.jpg-wh_500x0-wm_3-wmp_4-s_1965713883.jpg
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