RHEL7 network adapter link aggregation and grub troubleshooting tutorial, rhel7grub
1. Nic link Aggregation
NIC teaming, simply put, is to bind multiple physical ports together as one logical port for higher bandwidth and load balancing or high availability.
In RHEL7, runner (which can be regarded as a piece of code) is used to achieve different purposes.
The basic process of configuration is to configure a logical port connection as a master, and the
From: http://www.pcdog.com
The cause of an error on the IIS server is complex. Errors such as service startup failure, IIS process interruption, or site failure will be recorded in system logs. No matter what errors occur in IIS, you should use the Event Viewer to view related events recorded in system logs before determining the troubleshooting solution. Some errors are apparently caused by hardware damage to the server, while others are often imperc
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 technology, discusses the diagnosis of various router interfaces, and reviews the troubleshooting of the connectivity fault of the interconnected network.
Network Fault Diagnosis Overview
Network Fault Diagnosis: based on the fault phenomenon, the Network diagnosis tool is used
We all know that each computer needs an address to access the Internet normally. This address is what we often call an IP address. How can we effectively manage these IP addresses as network administrators? You can set the corresponding IP address, subnet mask, gateway address, DNS address, and other network parameters for each computer, but it is very cumbersome and heavy workload, conflicts often occur in practical applications.
How can we effectively allocate these network parameters? The DHC
Faults are inevitable during network management and O M. If an administrator attempts to build a zero-fault network, it will be futile. There are too many randomness and contingency factors in network faults, not to mention human factors. Therefore, what administrators need to do is to master the network troubleshooting skills, accumulate experience to cultivate a keen sense of smell, and be able to quickly locate and eliminate faults without detours
Commercial password theft is pervasive! Recently, I helped my friends with lan troubleshooting, but no one thought of a commercial hacker. For the sake of identification, the author will restore this extraordinary network troubleshooting process.
A friend is responsible for the company's HR and finance, and is also responsible for IT management. This is a well-known architectural design company in China. Th
After learning about DHCP, how can we apply it to actual operations? Many people are also unable to cope with many network errors. Next we will share our experience on Troubleshooting DHCP servers. An administrator suddenly finds that the IP address cannot be automatically obtained through the DHCP server, so he can remotely log on to the DHCP server to troubleshoot the problem. First, open the console, add the DHCP component, look at the server, and
Source: blog China
Today, computers are moving towards multimedia and intelligent development, while speakers are an important part of multimedia devices. It can be said that speakers are the most direct computer peripherals in addition to displays, its quality directly affects the effect of multimedia computers. The following describes some common troubleshooting methods for multimedia speakers:
When the speaker does not sound or only one sound, firs
Demonstration: Analysis and troubleshooting of RIP route updates
Fault Background: In the network environment shown in 14.6, engineers configured the interface address on the corresponding interface and started the RIP route protocol throughout the network, for some special reasons, the vros2 S2/0 interface does not have a specific IP address configured. The Unnumbered IP address (ipunnumbered e1/0) is used ), in fact, the IP address on the S2/0 int
, the single-pickup module B) was also deployed on the scene, but the amount of the order generated was not reduced.second, on-site deployment diagramAfter receiving the email, we quickly began to troubleshoot the problem. Before troubleshooting the problem, we learned about the deployment of each module in the field, as shown in 1.Figure 1 Field deployment diagramthree, the cause of the initial analysisWe asked the field support staff to return to th
Linux Troubleshooting IdeasThe basic idea of troubleshooting: the computer itself will not make mistakes, it is a tool and a carrier, only according to the people entered the command or program execution. The error is due to people in the operation of the problem, or the design of the time when there are bugs, or even hardware defects and so on. 1. View failure Information location Failure1) First check the
The previous article introduced the online application of one of the troubleshooting: High CPU occupancy, this article mainly analyzes the high memory footprint troubleshooting.
Java developers often encounter the following two kinds of exceptions:
1, Java.lang.OutOfMemoryError:PermGen Space
2, Java.lang.OutOfMemoryError:Java heap space
To explain these two exceptions in detail, you need to simply revisit t
MySQL replication exception big literacy: Quick traceability and troubleshooting full solutionHttps://mp.weixin.qq.com/s/0Ic8BnUokyOj7m1YOrk1tAAuthor IntroductionWang Songlei, currently working in Ucloud, is engaged in the MySQL database core research and development work, mainly responsible for the Ucloud cloud database UDB kernel troubleshooting work and the new database features of the research and devel
It is very useful to know some troubleshooting methods for access networks, and it also gives us more convenience in actual use. So I have studied the specific implementation methods of access network troubleshooting, And I will share with you here, hoping it will be useful to you. As a comprehensive technology, network fault diagnosis involves many aspects of network technology. Before learning the concept
DHCP protocol troubleshooting problem. This time, we mainly aim at the failure of clients to obtain IP addresses through the DHCP server. In this regard, what problems should we pay attention to, as well as its analysis and specific handling steps? Next we will look at it in detail.
DHCP protocol troubleshooting ◆ Network Environment
As shown in. In this networking environment, you can configure a global ad
1. 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 start of the serial port report provides the interface status and line protocol status. Possible Combinations of interfaces and line protocols are as follows:
1) serial port running and line protocol
[-]
Memory troubleshooting tools and related documents introduction focus
1 procsysvmmin_free_kbytes
2 procsysvmdrop_caches
3 Procsysrq-trigger
31 interpretation of the echo m Procsysrq-trigger output
4 Cat Procslabinfo
5 Cat Procmeminfo
51 Important Information
6 Top Information
7 Free Command
8 other files in the PROCSYSVM directory
5. Memory
method in the maintenance of the computer. Replacement refers to using normal switch components to replace faulty parts, so as to find the fault point. It is mainly used for the diagnosis of hardware faults, but it should be noted that the replaced parts must be the same type of switches of the same brand and model.
Of course, in order to make the troubleshooting work follow the rules, you can analyze the faults according to the following principles.
Wireless troubleshooting is what we will explain the content of this article. To cut into our theme from four aspects. Includes whether it is a hardware issue, how the access point is connected, whether the device is configured incorrectly, and whether multiple access points are not in the customer list.
Wireless troubleshooting One, is a hardware problem
When there is a problem with the wireless network,
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