What should I do about common server failures? Cause troubleshooting and handling guide

In the process of enterprise digital operation, the server as the core computing power carrier supports the key links such as website operation, data storage, and business system scheduling. Once a failure occurs, it will affect the user experience, and it will lead to business shutdown and data loss, causing immeasurable losses. Many operation and maintenance personnel are often in a hurry due to the lack of systematic troubleshooting ideas when facing server failures. This article will sort out a set of practical server failure response guidelines from the dimensions of fault troubleshooting logic, typical fault handling, and daily maintenance prevention to help solve problems quickly.

First, how to quickly troubleshoot the server failure in the early stage?

server failure occurs, avoid blind operation, first check according to the standard process, in order to quickly lock the root cause of the problem and save time for subsequent processing.

1, first check the physical level fault

first check the hardware connection status of the server, check whether the power cord is plugged in tightly, whether the network cable interface is loose, and observe the indicator light status of the server panel. If the power light is not on, it may be a power supply failure. If the network light is abnormal, it is necessary to troubleshoot the network cable or switch problem. At the same time pay attention to whether the server has abnormal noise, the fan abnormal sound may be a cooling system failure, and it is necessary to shut down and check in time.

2, re-examination system and network level

try to log in to the server through the remote management tool, if you can't log in, you can first check whether the local network is normal, and then directly operate the server with the help of the computer room KVM device, view the system start-up log, the error information in the event manager, and locate the system crash.

2. Targeted treatment of typical server failures?

different types of server failures have corresponding solutions, mastering the solutions to these typical failures can greatly improve the efficiency of fault handling.

1, the server can not start failure

If there is no response after the server presses the power supply, prioritize the power supply system, replace the power cord or test whether the socket is powered on; if there is a startup sound but it cannot enter the system, you can try to enter the BIOS to view the hardware identification status, troubleshoot whether the hard disk, memory and other hardware are loose, and if necessary, detect the health status of the hard disk through the PE system. If the system file is damaged, you can use the system repair tool or reinstall the system.

2, server network connection abnormal failure

when the server network card or can not connect the situation, first use the ping command to test the gateway and public network connectivity, if the gateway does not need to check whether the server IP configuration is correct, if the public network is not connected, contact the operator to check the line. At the same time check the server firewall rules, confirm whether there is a policy to intercept normal traffic, or check whether the network interface card driver needs to be updated.

Data recovery and stop loss after server failure?

server failure is often accompanied by the risk of data loss, timely data recovery and stop loss measures can minimize business losses.

1, priority to ensure the core business operation

If the server hosts multiple business systems, the core business can be switched to the standby server first, and the core business services can be quickly restored through cluster switching, DNS resolution jump, etc., and then the faulty server can be deeply investigated and repaired to avoid greater losses due to long-term shutdown.

2, standardize data recovery operations

If the logical failure of the server hard disk causes data loss, stop the write operation of the failed hard disk, and use professional data recovery software to scan and recover; if it is a hardware failure, do not disassemble the hard disk by yourself, and contact a professional data recovery agency for processing. At the same time, with the help of regular backup data recovery, to ensure data integrity.

How to prevent frequent server failures?

instead of passively dealing with server failures, it is better to take the initiative to do daily maintenance, reduce the probability of failure from the root cause, and improve the stability of server operation.

1, establish a regular inspection mechanism

formulate a server inspection schedule, daily check system logs and resource occupancy, weekly check hardware operation status and network connectivity, monthly system patch updates, hard disk health inspections, quarterly dust removal and maintenance of servers, timely discovery of potential hidden dangers and processing.

2, improve the backup and disaster recovery system

build a multi-dimensional server data backup system, and use the combination of local backup and off-site backup to regularly test the recoverability of backup data. At the same time, build a server cluster or disaster recovery system. When the main server fails, the backup system can automatically take over the business and realize no-perception switching.

To sum up, server failure response needs to follow the logic of "first troubleshooting, then processing, re-recovery, and diligent prevention", from the initial rapid troubleshooting of locked problems, to the targeted treatment of typical failures, and then to the data recovery and daily maintenance, to form a complete server failure management system. Paying attention to details in daily operation and maintenance, regular maintenance and drills can effectively reduce the incidence of server failures and ensure the continuous and stable operation of business systems.