fitech troubleshooting

Details of several common troubleshooting methods for routers, and details of several troubleshooting methods1. Serial Port troubleshooting When a connectivity problem occurs in the serial port, in order to eliminate the serial port fault, the show interface serial command is generally used to analyze its screen output report content and locate the problem. The s

Atitit. troubleshooting series ----- troubleshooting when apache cannot be started, atitit ----- apache Atitit. troubleshooting series ----- troubleshooting when apache cannot be started You can directly use cli to start httpd and print out detailed information .. C: \ Users \ ASIMO> "C: \ wamp \ apache2 \ bin

For a one-time troubleshooting page 502, page 502 troubleshooting First, Scene: System Deepin 15;php 5.5.33;nginx 1.9.9 Second, the situation: simple page output normal (such as phpinfo ();), run any of the company's projects, are 502 Third, the investigation 1, query various logs, including Nginx.error.log, Php_error.log, Php-fpm.error.log, find PHP-FPM error as follows [22-mar-2016 11:06:32] WARNING: [Po

Atitit. troubleshooting series ----- troubleshooting when apache cannot be started Atitit. troubleshooting series ----- troubleshooting when apache cannot be started You can directly use cli to start httpd and print out detailed information .. C: \ Users \ ASIMO> "C: \ wamp \ apache2 \ bin \ httpd.exe" Httpd.exe: S

Analysis of troubleshooting and troubleshooting Definition:N ordered elements should have n! . If an arrangement does not place all elements in the original position, it is called an incorrect arrangement. Let's give an n, and find the number of "D" for "1, 2, 3", "...", and give all the error troubleshooting solutions. Reasoning: Step 1: place the nth element i

High-load Mysql troubleshooting and mysql troubleshooting Troubleshooting of Mysql high load Problems Found The top command checks the server load and finds that mysql has 200% of the cpu, which causes the high load of Mysql. It is estimated that it is caused by index problems and some abnormal SQL statements.Troubleshooting 1. determine the type of high load. T

Linux system-network basic configuration and troubleshooting, and linux basic configuration troubleshooting In linux, there are three types of network configuration: one is to directly implement the configuration file using command lines on the terminal, and the other is to modify the configuration file, another method is setup text interface settings. The difference is that after the configuration file is

Although the Linux system is very powerful, stable, but we use the process, if the human operation is not appropriate, will still affect the system, and may even make the system does not boot, unable to run services and other problems. Then this blog post summarizes some common troubleshooting methods, but it is impossible to cover all, can only continue to supplement, update.first, the administrator forgot the password(1), restart the computer, enter

Troubleshooting of common mysql errors and troubleshooting of mysql errors 1. mysql service cannot be started and error 1067 is reported Solution:1). decompress the mysql Server Directory and add a new my. ini file. The content is as follows: [Mysqld] # set basedir to installation path, e.g ., c:/mysql # set it to the installation directory basedir = c:/tool/mysql5617win32 # set datadir to location of data

Linux troubleshooting case (1): linux troubleshooting Running Environment: CentOS6.7 Fault Cause: Yesterday, the command yum-y update was executed online. The command was forcibly interrupted and the poweroff command was run to shut down. If a fault occurs during reboot: According to the prompt information analysis, the system kernel information may be disordered due to the incomplete execution of the

Online troubleshooting commands-Shell, online troubleshooting-shell Creation: Liu Xinyu, latest modification: about 4 hours ago Go to metadata start 1. Track online logs and regularly refresh the latest content tail-fn 200 $log 2. Search for a specified string # Show only matching rowsgrep$String $file# Match up or down n rows of the row where the string is locatedgrep-C n $String $

BTrace: Java online troubleshooting tool, btrace troubleshooting What is BTrace? BTrace is a killer for checking and solving online problems. BTrace can obtain all information during program execution by writing scripts. Note that you do not need to restart the service. Yes, you do not need to restart the service. Write the script and run it directly without the code of the original program. Principle In ge

The local computer cannot start Apache troubleshooting and apache troubleshooting Recently, due to work needs, I have to learn the basic programming of PHP, so I learned how to set up the working environment of PHP. However, as described in the textbook, after WMAP is installed, it cannot run successfully. Then we found that Apache has never been running. Go to the Apache option in WMAP to select start but

Jvm memory growth troubleshooting examples and jvm troubleshooting examplesTroubleshoot jvm memory Growth Troubleshoot the problem that the jvm memory usage continues to increase. record it and take it as a warning. The O M team found that the jvm memory usage of the application fell back after the release and continued to increase. After dumping, it analyzed: Public The bean Generation Code must be mult

Java virtual machine performance monitoring and troubleshooting tools, virtual machine troubleshooting 1. jdk command line tool 1) jps: Virtual Machine Process status Tool Jps [option] [hostid] Main parameters: 2) jstat: Virtual Machine statistics monitoring tool Jstat- Main parameters: For example, if the gc information of process 8675 is queried twice every 8675 ms, jstat-gc 1000 2 3) jinfo: Java conf