charter troubleshooting

Just into a company, suddenly a direct throw to the public network development test machine, there is output traffic explosion 300m+, directly lead to server load high, IDC cacti monitoring reported traffic anomaly problem, the following is the troubleshooting process:1, vim/root/.bash_history # View root user operation command log file, any information is not, be clear2, vim/var/log/Secure # Check the log, found a lot of login failed to try to record

in a real-world production environment, you will often encounter servers CPU full problem, this time, the correct method of troubleshooting, help to quickly locate the problem. 1, find the most CPU -consuming process executes top , displays a list of process run information, and then type p ( uppercase p), the process follows the CPU The usage rate is sorted. 2. Find the thread that consumes the most CPUexecutes top-hp 8880, displays a list of thread

=INNODB;Disadvantage: If the single table is increased too large, such as more than 100G, performance will be affected. In this case, if you use shared tablespace, you can separate files, but there is also a problem, if the scope of access is too large to access multiple files, it will be slower. If you use a stand-alone table space, consider using partitioned tables to mitigate the problem to some extent. In addition, when you enable standalone tablespace mode, you need to adjust the settings o

#=====================Import Database:# TAR-XVF employees_db-full-1.0.6.tar.bz2# CD employees_db# msyql-h Localhost-u Root Employees.sql=============================================Precautions:1, [ ]# rpm-qa|grep MySQLIf both Mysql-libs and Mysql-server are present, unload both.2, []# whereis cmake3. []# CD mysql-5.6.21[]# Vim Install-sourceError occurred:Troubleshooting:[]# yum Install ncurses* error still occurs. As follows:Error Downloading Packages:ncurses-static-5.7-3.20090208.el6.x86_64:

Tags: Linux system troubleshooting Linux system Boot process boot directory recovery partition table information recovery for main sectorsLinux Boot SequenceThis diagram is a complete introduction to the Linux boot sequenceBelow I will tell you in detail a boot processThe first step is to load the BIOSWhen you turn on the computer, the computer will first load the BIOS information, which is called the power-on self test. This shows that the BIOS infor

The superior performance and price of vswitches are greatly reduced, promoting the rapid popularization of vswitches. Network administrators often encounter a variety of switch faults at work. How can they quickly and accurately find and eliminate faults? This article briefly introduces common fault types and troubleshooting steps. As vswitches are widely used in the company's network, from the low end to the middle end, from the middle end to the hig

The superior performance and price of vswitches are greatly reduced, promoting the rapid popularization of vswitches. Network administrators often encounter a variety of switch faults at work. How can they quickly and accurately find and eliminate faults? This article briefly introduces common fault types and troubleshooting steps. As vswitches are widely used in the company's network, from the low end to the middle end, from the middle end to the hig

A new multi-step troubleshooting solution for vro troubleshooting, as the name suggests, is to solve common router faults. This article also describes the most popular diagnostic procedures for wireless routers on the market. Network diagnosis is an important technical task that manages and makes good use of the network to maximize its role. This article briefly describes the hierarchical diagnosis technolo

1. Troubleshooting)Here we will introduce the hardware and software problems that may occur when using vrouters. During the networking process, such as X.25, FR, DDN, DDR, TCP/IP, problems encountered in different network environments such as interconnection with IBM large hosts and solutions .? Troubleshooting tool? What is the Troubleshooting of TCP/IP connecti

As we all know, during the installation and use of computers, we must inevitably encounter some system faults, such as the failure to start or print the system due to software reasons ), how to quickly and efficiently troubleshoot these faults has become one of the topics of interest to the majority of users. In the past, the operating system did not provide the function of eliminating system faults. When encountering problems, the majority of users can only find a solution by themselves, or see

Add controls manually add or drag in the layout add, add EditText after the layout is not good, the other controls easy to use, and then said the following paragraphException raised during rendering:java.lang.System.arraycopy ([Ci[cii) VException details is logged in Window > Show View > Error LogCheck the "Android version to use when rendering layouts" and make sure your ' re not using a version of ' ends in "W Droid Wear (e.g. API 20:android 4.4W). I don ' t believe Wear supports EditText.Modi

1, through the log troubleshooting issues:Location:/usr/local/nagios/var/nagios.log2. Common errors:A, It appears as though you don't have permission to view information for any of the servies you requestedReason: Open IE login for nagios users without just asking permissionSolution: VI cgi.cfg +119Authorized_for_system_information=admin#把建立的用户添加到后边, pay attention to separating them with commas. B, Return Code of 127 is out of bounds-plugs may be miss

Windows software installation errors and troubleshooting-Linux general technology-Linux technology and application information. The following is a detailed description. When using linux, users will always encounter problems of sharing and communicating documents with others, while most users use windows systems. This leads to the need to install windows software in linux. 1. Install rtx Software 1) during installation, some errors will be reported in

follows: Ran out of trampolines of typeAfter viewing this information, you can search for the corresponding solution directly.So refer to:Http://answers.unity3d.com/questions/64909/ran-out-of-trampolines-of-type-2-ios.htmlIn unity made a change, this thought all should be able to return to normal,, will not appear yang too called the Little Dragon Woman back is a sad and heartbreaking,,, but build finished, found,, or crash, view the stack or,,, jit,~~~ and still the problem here, , I feel a li

Article Title: Linux software package troubleshooting. 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. 　　 Rpm database corruption Fault Cause: Rpm database faults are rare. The cause of the failure is usually forced shutdown, deleting running files by mistake, and forcibly replacing some rpm package files. Fault sy

(mylock.lockb) {System.out.println (Thread.CurrentThread (). GetName () + "... If lockb ....}}} Else{while (True) synchronized (mylock.lockb) {System.out.println (Thread.CurrentThread (). GetName () + "... else lockb); synchronized (Mylock.locka) {System.out.println (Thread.CurrentThread (). GetName () + "... else locka ... ");}}}} Class Mylock{public static Final Object Locka = new Object ();p ublic static Final Object lockb = new Object ();} Class Deadlocktest {public static void main (s

meet the IE One GPO template update (this kind of method is also applicable to client operating system refresh), we recommend the first method of operation. For more information about how to set up GPO bulk enable client operations please Baidu, thank you for your cooperation.Note: When you open the local Group Policy, you will also be able to address the problem with the method described above can also be resolved, you can use the normal computer template replacement or directly edit the file

Download the jar package yourself to the local repository, but you cannot manually add folders and Pom.xml files so that Maven will not be able to find them.In principle, MAVEN does not need to do this, because the pom.xml in the dependent jar package will be automatically downloaded from the central warehouse to the local repository, in the setting will be set, if the local warehouse does not, will go to setting download jar package, if not then will error. So you need to download the jar packa

connection can be transmitted multiple times, so that more than one HTTP request can be delivered in a single connectionMaxkeepaliverequests 50 Sets the number of requests that can be made within a single connectionKeepAliveTimeout 15 If the server has completed a request, how long does not accept the next request will be disconnectedSave reboot ApacheAfter you have finished setting up the operation:Netstat-n |awk '/^tcp/{++s[$NF]}end{for (i in S) print I,s[i]} 'You will find it very successful

Node. js favicon. ico request troubleshooting, node. jsfavicon. ico Copy codeThe Code is as follows:Var http = require ("http ");Var server = http. createServer ();Server. on ("request", function (req, res) {5 console. log (req. url );Res. end ();});Server. listen (1337, "127.0.0.1 "); Such code will have two requests during the request: In the first example, the URL address is the target URL of the client request entered by the user. "/" indicat