[Website Building Tutorial] Alibaba Cloud data disk mounting and uninstalling, as well as deleting new partition information

• Use the management terminal or remote connection tool to log in to the instance by entering the username, root, and password.
• Run the fdisk -l command to view the data disk. Note: The disk cannot be seen using the df -h command until there is no partitioning and formatting the disk. In the example below, there is a 5 GB data disk that needs to be mounted.
  If /dev/xvdb is not found after executing the fdisk -l command, it means that your instance does not have a data disk and therefore does not need to be mounted. This chapter can be ignored.
  
• Run fdisk /dev/xvdb to partition the data disk. As prompted, enter n, p, 1, enter twice, wq, and partition to start.
  
• Run the fdisk -l command to see the new partition. The new partition xvdb1 has been created. /dev/xvdb1 in the example below.
  
• Run mkfs.ext3 /dev/xvdb1 to format the new partition. The time required for formatting depends on the disk size. You can also choose other file formats such as ext4.
  
• Run echo /dev/xvdb1 /mnt ext3 defaults 0 0 >> /etc/fstab to write the new partition information. Once done, you can use the cat /etc/fstab command to view it.
  
  Note: Ubuntu 12.04 does not support barrier, so the correct command for this system is: echo /dev/xvdb1 /mnt ext3 defaults 0 0 >> /etc/fstab
  If you need to mount the data disk separately to a folder, such as for storing web pages separately, you can modify the /mnt part of the above command.
• Run mount /dev/xvdb1 /mnt to mount the new partition, and then do df -h to view the partition. If the data disk information appears, it means that the mount is successful and the new partition can be used.
  
  • mount /dev/xvdb1 /mnt
  • df -h
  • Filesystem      Size  Used Avail Use% Mounted on
  • /dev/xvda1       40G  1.5G   36G   4% /
  • tmpfs           498M     0  498M   0% /dev/shm
  • /dev/xvdb1      5.0G  139M  4.6G   3% /mnt
    
  
  If you had a mounting error before, here is to help you solve it!

Solved the problem of modifying the default MYSQL database storage path method in the AMH system panel

First, copy the AMH panel database to the mount directory folder

Here you can see that the mounted data disk is in the HOME directory, which is generally like this, we can copy /usr/local/mysql/data to the /home/mysql folder.

cp -R /usr/local/mysql/data/ /home/mysql/

Execute SSH commands in one step.

Second, create a new database directory with soft links

Run the ln -s /home/mysql/data command in the /usr/local/mysql/ directory to create a soft link, and delete or change the name of the old DATA database folder, or change the name first.

Third, set the new MYSQL directory folder permissions

cd /home

chown -R mysql:mysql mysql/

Finally, restart the VPS to fix the problem