Shulou(Shulou.com)05/31 Report--

Today, I will talk to you about the reasons for server downtime and what the solution is. Many people may not know much about it. In order to make you understand better, the editor has summarized the following contents for you. I hope you can gain something according to this article.

It is believed that many webmasters have encountered the phenomenon of server downtime, which means that the server cannot operate due to some reasons, which leads to the normal use of the network. Server downtime has a great impact on the website, which not only causes visitors to visit the website, but may even affect the inclusion and ranking of the website on the search engine, so when renting a server, it is recommended that webmasters choose servers that have a low probability of downtime such as servers in the United States. In the process of using the server, the server downtime may occur. First of all, we have to find the reason why the server may be down before we can find the corresponding solution.

Server downtime can be divided into two types: fake crash and crash.

Fake crash (non-blue screen crash) is due to the temporary depletion of hardware resources, so it is unable to respond to external instructions, usually the website is in the peak period of access, bandwidth and other resources are full, at this time only need to wait a certain amount of time, wait for the server to free up more hardware resources to return to normal

On the other hand, if you pass the ping test server, the keyboard switches the numeric lock key (NumLock) or uppercase lock key (Caps Lock) function, the monitor has no screen output, or the mouse cursor does not respond, it indicates the hardware failure of the server.

Common reasons for server downtime

1. Among the problems with the running environment, the most common problem is running out of disk space.

2.. Among the performance problems, the most common cause of server downtime is the poorly running SQL, but it is not always the same. For example, there are many problems caused by server Bug or incorrect behavior.

3.。 Poor Schema and index design are the second biggest performance impact.

4.。 Replication problems are usually caused by inconsistencies between master and standby data.

5. Data loss problems are usually caused by misoperation of drop table and are always accompanied by a lack of available backups.

How to check the cause of server downtime

A, whether the application caused the memory overflow or leak, out of memory caused

B, whether it is caused by too many processes or continuous creation, resulting in running out of resources

C, whether it is a database program deadlock, too many connections lead to

D, whether the application exception caused

E. Whether it is caused by excessive traffic load

F, whether it is caused by a hacker attack

G, whether it is caused by misoperation

How to solve the problem of server downtime

a. The problem of server downtime should be found immediately. It is an immutable truth that time is money. We need to find the problem of downtime as soon as possible. If his server goes down, in order to avoid unnecessary losses, inform the service provider to solve the problem as soon as possible.

b. It is best to prepare two website spaces, they store the same content, but the ip is different, and the geographical location of the computer room is different. In this way, the possibility of two hosts being down at the same time is greatly reduced. After the downtime is found the first time, you can quickly modify the domain name record in dnspod.com to point to the current normal website space. Dnspod resolution takes effect in real time, while the average dns server takes a long time to refresh and claims to take effect within 24 hours. According to practical experience, it takes about 30 minutes to take effect, otherwise it is necessary to check whether the domain name binding is correct.

After reading the above, do you have any further understanding of the cause of the server outage and what the solution is? If you want to know more knowledge or related content, please follow the industry information channel, thank you for your support.

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