监控tomcat状态

创建存储文件

mkdir /usr/local/tomcat/webapps/memtest/

vim /usr/local/tomcat/webapps/memtest/meminfo.jsp

添加脚本内容

<%

Runtime rtm = Runtime.getRuntime();

long mm = rtm.maxMemory()/1024/1024;

long tm = rtm.totaMemory()/1024/1024;

long fm = rtm.freeMemory()/1024/1024;

out.println("JVM memory detail info :<br>");

out.println("Max memory:"+mm+"MB"+"<br>");

out.println("Total memory:"+tm+"MB"+"<br>");

out.println("Free memory:"+fm+"MB"+"<br>");

out.println("Available memory can be used is :"+(mm+fm-tm)+"MB"+"<br>");

%>