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Tested on Tomcat, theoretically tried on any Java process, and any program that implements the JMX specification.
Modify the $catalina_home/bin/catalina.sh file and add the following JVM parameters
-DCOM.SUN.MANAGEMENT.JMXREMOTE.PORT=18100//Specify JMX connection ports
-dcom.sun.management.jmxremote.authenticate=false//this configuration is insecure. Any remote user who knows (or guesses) your JMX port number and host name would be able to monitor an
most basic management tasks for Power servers.
Table 1. VMControl command line classification and some command lines:
For the command lines marked in the bold box, we will use instances later to help you understand their usage. For other command lines not involved in this article, refer to the VMControl information center below for its usage and usage. (Click to view details)
In general, we can also guess the usage of most commands through the objec
CACTI: Use a template to monitor mysql on a local server or another server
Mysql templates, online are using this address http://mysql-cacti-templates.googlecode.com has not been accessed
File currently downloaded: percona-cacti-templates-1.1.4-1.noarch.rpm
Local server monitoring local mysql:
Go to the cacti directory
cd /var/www/htmlMove the compressed file to the current directory (put it there ):
mv per
CACTI: Use templates to monitor mysql and cactimysql on local or other servers
Mysql templates, online are using this address http://mysql-cacti-templates.googlecode.com has not been accessed
Google found this URL:
Introduction: http://www.percona.com/doc/percona-monitoring-plugins/1.0/cacti/mysql-templates.html
Download Page: http://www.percona.com/downloads/percona-monitoring-plugins/
To facilitate the
denotes to, recipient address-S mail server domain name-U Theme-xu User name (before @)-XP User Password-M Plain Text information-O message-file=/root/. Send content from a file-A Send attachment (-m,-o,-a can be used simultaneously)For example:[Email protected] sendemail-v1.56]#/sendemail-f [email protected]-t [email protected]-s SMTP.163.COM-XU aaaa-xp PA Ssword-u test-m TesteamilAPR 10:09:16 Blog sendemail[8861]: Email was sent successfully!Problem:1 · If the following prompt appearsJan 10:0
]exceptexception,e: print "Usage:python%stype" %sys.argv[0] sys.exit (1) main (type)## test the script:[[email protected] python]# python check_mysql_custom.py processlist3[[email protected] python]# python check_mysql_ custom.py Connections55876## The test shows all the MySQL in Show Status can output information:## Write a template configuration file (custom Key value):[email protected] zabbix_agentd.d]# cat Mysql_custom.confuserparameter=mysql. custom[*],/usr/local/bin/python/home/python/chec
C # multi-thread Development 7: Use the Monitor class to synchronize multiple threads
In the article "Synchronize multiple threads with the lock statement", use the lock statement to synchronize multiple threads to access critical resources.
The code for using the lock statement is as follows.
Private static object o = new object (); lock (o) {if (account> = 100
environment in real time, and begin to drill down into different metrics to build service level alerts for things that might affect the customer. So, when the environment turns red, I get alerts to know that a service is in a state of emergency, such as the credit card and address endpoint in the sock shop.I can even drill into the dashboard to know what pods and containers are under the greatest pressure. In this example, the largest network pressure container is the flannel Pod. This allows u
Use shell script to monitor whether a process exists without a startup instance, first on the code dry:
#!/bin/sh
ps-fe|grep processstring |grep-v grep
if [$-ne 0]
then
echo "START process ..."
else
#####Processstring represents a process feature string that can be queried to a unique process's character string0 indicates the existence of$? -ne 0 does not exist, $? -eq 0 Exists
Timed execution
This article mainly introduces the use of session monitoring in Java with the account login limit, the number of login restrictions, the specific code is as follows:
Problem domain:
1, with the account login: If this account has been logged in, can not log in again (contrary to the QQ mode).
2, the number of login limit, over, reached the limit of the number of people prompted: The system is busy, try again later.
Solution:
Microsystems, its name is Sun Small programmable Object Technology (SPOT). This article describes the SPOT and shows how to build a build monitor for monitoring CruiseControl.
What is SPOT?
SPOT (see Figure 1) is a small wireless device that runs a Java™ program. The SPOT contains a number of sensors for monitoring its environment, as well as a set of color LEDs for communication with the outside, and two buttons for providing basic feedback. I
You can use bootchart to conveniently monitor linux Startup and RuntimeStatus, And the status information is Graphically displayed and output as an image.However, because of the special implementation of bootchart, it is not suitable for embedded systems.In an embedded system, you can use the simplified bootchart-lite to replace bootchart.1. Download bootchart-li
Use ntop to monitor linux host-Linux Enterprise Application-Linux server application information. The following is a detailed description. 1. installation:
# Rpm-ivh ntop-3.2-1.el4.rf.i386.rpm
2. Create a log file directory:
# Mkdir/var/log/ntop/
Create an account:
# Useradd-g ntop-s/bin/true-M ntop
3. Start for the first time (root)
/Usr/bin/ntop-P/usr/share/ntop-u ntop-
#-P [directory] specifies the. db f
Article Title: Practical Tips: Use LoadRunner to monitor Linux. Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source.
LoadRunner monitors the Linux installation, so share it out and forget it. You need to download three packages and google them online:
(1) rsh-0.17-14.i386.rpm
In combination with PHP to connect to the Oracle database, this time with the rrdtool drawing tool, to draw some custom monitoring charts, although Oracle EM is already perfect, but often according to the industry
In combination with PHP to connect to the Oracle database, this time with the rrdtool drawing tool, to draw some custom monitoring charts, although Oracle EM is already perfect, but often according to the industry
In conjunction with this article on connecting PHP to the Oracle
Network Packet capture tool-How to Use Network Monitor-Microsoft Internet Development Support-blog Park
Network Packet capture tool-How to Use Network MonitorBy Microsoft Internet development support, 2010 reading, 13 comments, favorites, editing
Http://www.microsoft.com/en-us/download/details.aspx? Id = 4865Main Purpose
Capture and parse network packets of va
session) {SYSTEM.OUT.PRINTLN ("Message from client:" + message);/*userName = message;for (websocketforjsp Item:websocketset) {try {Item.sendmessage (message);} catch (IOException e) {E.printstacktrace ();Continue}}*/}/*** Called when an error occurs* @param session* @param error*/@OnErrorpublic void OnError (session session, throwable error) {SYSTEM.OUT.PRINTLN ("error occurred");Error.printstacktrace ();}/*** This method is not the same as the above methods. Without annotations, it is based on
Java is an open, standard, general-purpose network program running platform, Java-written applications can be applied to a variety of different platforms and terminals without modifying the program, similarly, WAP based mobile phones can also use Java platform or with back-end server interaction to complete a variety of complex functions. Have you ever thought that sitting in a car or walking on the road can easily manage your complex Internet or loca
plug-in installation directory/var/lib/zabbix/percona/ Templates, copy it out and import it into the Zabbix web.After importing the template name "Percona MySQL Servertemplate", the template is grouped "Percona Templates".650) this.width=650; "src=" Https://s2.51cto.com/wyfs02/M02/9F/58/wKioL1mbvCDCGeCsAACKzhCW6gU819.png "title=" Template. png "alt=" Wkiol1mbvcdcgecsaackzhcw6gu819.png "/>Note: The templates in the official installation package are tested under the zabbix2.0.9 version and are te
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