Shulou(Shulou.com)06/02 Report--

In this issue, the editor will bring you about why the backup files of the cloud virtual host database should be deleted. The article is rich in content and analyzes and describes for you from a professional point of view. I hope you can get something after reading this article.

Sometimes we delete unimportant data in the database after backing up. After the data deletion is successfully executed, the space in the database is freed.

It is very important to back up the data of the cloud virtual host every day. Due to the characteristics of the virtual environment, the webmaster often makes some common mistakes that lead to abnormal backups. Let's introduce it next.

The wrong way of silence

Many times when we recover the data, the data will be incomplete, and choosing the wrong way of silence is one of the reasons. Because the backup of the virtual host is done in the virtual layer, not on the client, the two silences are different and need to be confirmed before the backup.

Install the agent incorrectly

Backup through other programs is a common misunderstanding, especially the installation of agent backup, which will not only cause a waste of host resources, but also inefficient. When multiple backups of web space take place at the same time, it is easy to stagnate.

Replace backup with snapshot error

Virtual machine snapshot can only play the role of backup for a short time, generally speaking, it is a snapshot record made before patching or upgrading the virtual host, and it can be restored to the last state if the upgrade or patch is incompatible.

Therefore, this method is only a record of a recovery point and can only restore the state of the last snapshot, but not individual files. If the data is lost, the snapshot will be useless. Second, because each snapshot is a separate file, a large number of writes can cause disk space to fill up quickly.

Virtual machine backup usually shares one storage with the host. If there are multiple virtual machine backups on this shared storage, it is easy to take up resources and even affect the operation of the host.

This is why the backup file of the CVM database should be deleted. If you happen to have similar doubts, please refer to the above analysis to understand. If you want to know more about it, you are welcome to follow the industry information channel.

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