I. troubleshooting commands
1. show command:
1) Global commands:
Show version; displays the system hardware and software versions, DRAM, Flash
Show startup-config; displays the configuration content written into NVRAM
Show running-config; displays the currently running configuration content
Show buffers; Detailed output buffer name and size
Show stacks; provides the router process and processor utilization information, using stack decode
Show tech-sup
Sysdig: A Tool for Linux Server monitoring and troubleshooting (1)
When you need to track the system calls generated and received by a process, what come first in your mind? You may think of strace, so you are right. What command line tools will you use to monitor original network communication? If you think of tcpdump, you have made an excellent choice. If you need to track open files in Unix: Everything is a file), you may use lsof.
Strace, tcpdump
SQL Azure database is a cloud-based relational database service provided by Microsoft. Cloud-based data solutions provide many benefits, including fast provisioning, more economical scalability, high availability, and reduced management costs. This article describes the dynamic management views available in SQL Azure and how they are used for troubleshooting.
Performance Considerations
SQL Azure uses the data engine of SQL Server 2008 as the core. The
ArticleDirectory
Instance: a possible performancepoint service error
In this blog, we will share some useful tips on performancepoint services troubleshooting. Articles on technet and other blog posts on these topics. For example:
Install and deploy the performancepoint service step by step. Other technet articles are also included.
The system is familiar with the deployment of performancepoint 2010. This blog post is writte
Problem background
Working in Monday, I first learned about last week's Test with my colleagues, be told in a multi-instance scenario MySQL Server hang Live, unable to test, the original version does not exist this problem, and the new version of this problem, can not help but feel a shiver, the heart can not help feeling strange, fortunately, the scene environment is still in, Provides a good environment for troubleshooting problems and then puts th
Troubleshooting 80004005 and other error messages
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The information in this article applies to:
Microsoft Data Access Components versions 1.5, 2.0, 2.1, 2.5
Active Server Pages
Microsoft Visual InterDev, version 1.0
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Profile
This article details some common reasons why Microsoft data Access Comp
Troubleshooting tools for ISA Server
10.1.3 Exercise: Test port status
In this exercise, you need to use the Netstat and Telnet commands to determine the port status of the ISA Server computer. This technique can be used to verify security or to determine whether services running on the ISA Server computer are available to external sites.
Exercise: Test the ISA Server port
In this exercise, run the Netstat utility at the command prompt and note that
Sun.rmi.transport.tcp.tcptransport$connectionhandler.run0 (tcptransport.java:790)
At Sun.rmi.transport.tcp.tcptransport$connectionhandler.run (tcptransport.java:649)
At Java.util.concurrent.threadpoolexecutor$worker.runtask (threadpoolexecutor.java:895)
At Java.util.concurrent.threadpoolexecutor$worker.run (threadpoolexecutor.java:918)
At Java.lang.Thread.run (thread.java:662)
According to getconnectiontimeoutexception this anomaly, preliminary suspicion: (1) MySQL connection,
the GPM, you can copy and paste.In this editing window, we can enter the 3 modes of rescue,emergency and shell boot as needed. These 3 modes are useful for system startup troubleshooting, such as a service that is stuck and unable to load. We can debug these 3 modes.Rescue mode: Add S at the end of commandline configuration, like single user mode before RHEL6Press Ctrl+x to startNormal mode needs to load a lot of services, but this rescue mode load i
" is "Delusertype", "Cosid" corresponds to the service level in the User data table, "Cosvalue" is 1 to delete only Class A users, and 0 for a or b users to delete.We execute the SQL statement in the database "select cosid, cosvalue from tb_cosparamterwhere cosname = ' Delusertype '", the result is as follows:Cosid Cosvalue1 12 13 14 15 1As you can see, each service level corresponds to a COS value of 1, which means that only class A users are deleted. This is consistent with what we have obser
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
Troubleshooting vswitch faults: for power supply faults and port faults, in the Internet era, you will often encounter troubleshooting vswitch faults. The following describes how to resolve vswitch faults, including how to solve power supply faults.
No matter how good the performance of a switch device is, there will be potential faults. Just like people, no matter how healthy they are, there will always be
In the face of more and more complex network applications, many networks will encounter one or more faults. Now, let's analyze the DNS troubleshooting process. This section describes the precautions, troubleshooting procedures, and detailed troubleshooting steps for configuring DNS in a typical DNS networking environment.
DNS
I believe many people are familiar with tracing network faults with traceroute ip addresses. This is based on the IP address (Layer 3) route tracking, and is suspected to be used to eliminate most network faults. The layer-2 route tracing is very similar to the layer-3 route tracing. One essential difference is that Layer 2 routing tracking is based on MAC addresses and solves Layer 2 connection faults. In determining the data transmission path in the second-layer topology, this second-layer rou
This article is a computer Quality Pre-sale recommendation >>>> MySQL Troubleshooting guideMySQL Troubleshooting reference books every DBA and database support person should read the booksContent IntroductionThe MySQL Troubleshooting guide, written by Oracle's technical support engineers, explains in detail the knowledge of MySQL fault diagnosis and processing, a
Tags: set process proportional outage-o gen BSP Tput LookupOriginal: http://www.cnblogs.com/Security-Darren/p/4700387.htmlA network failure to troubleshoot a Linux system.Network troubleshooting is generally a certain way of thinking and order, in fact, the idea of troubleshooting is based on the specific problem-by-paragraph troubleshooting may occur, the final
Troubleshooting of SSH server logon failures-Linux Enterprise Application-Linux server application information. For details, refer to the following section. Analysis and troubleshooting: When the ssh client logs on to the server using the port and IP address, we should follow the steps below when we encounter the problem that such services cannot be linked.
1. First, determine whether the service is norm
[Nagios monitoring] NRPE: the reason for Unable to read output and troubleshooting the normal operation of the nrpe monitoring terminal definition command, monitor run #/usr/local/nagios/libexec/check_nrpe-H 117.121.9.200-c check_oracle_tablespace error prompt: NRPE: Unable to read output monitor run: #/usr/local/nagios/libexec/check_nrpe-H 117.121.9.200 can return the nrpe version information, indicating that the nrpe communication is normal. Definit
Gulp Troubleshooting Publishing online file (CSS and JS) caching issuesthe reason of this article: the current often online after the release of the document to constantly refresh the page and a long time, the page CSS and JS file to take effect, especially for the current time to do the mall, built-in browser cache is very serious, We used to fix the post-online caching problem by adding a timestamp to the file, but it doesn't work in the browser, so
My scheduled task will be 5 o'clock in the morning every day to adjust a transaction, trading logs with the logging module, today found that log has a problem, the following troubleshooting.
When viewing the log, I found that I should have logged 5, and the log time was displayed as2016-09-12 21:00:02,379-info-novel.py[line:82]-Select day
Checked the code, did not find the problem, and then found 21 points and 5 spreads 8 hours, that is, the
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