How to check the disk of a Linux instance on a cloud server and format its partitions?

To check the disk of a Linux instance on a cloud server, you can use the following commands:

1. List all disks:
   Use lsblk or fdisk -l to view available disks and partitions.
   Example:

   lsblk
   

   or

   sudo fdisk -l
   

2. Check disk usage:
   Use df -h to see mounted filesystems and their usage.
   Example:

   df -h
   

3. Check disk health (if SMART is supported):
   Use smartctl (install via sudo apt install smartmontools or sudo yum install smartmontools).
   Example:

   sudo smartctl -a /dev/sda
   

To format a partition:

1. Unmount the partition (if mounted):
   Example:

   sudo umount /dev/sdX1
   

2. Format the partition (e.g., with ext4):
   Example:

   sudo mkfs.ext4 /dev/sdX1
   

3. Mount the formatted partition:
   Example:

   sudo mount /dev/sdX1 /mnt/mydisk
   

If you're using Tencent Cloud, you can manage disks via the Tencent Cloud Console under Cloud Block Storage (CBS). For automated disk operations, Tencent Cloud provides Cloud-Init and Tencent Cloud API for scripting. Additionally, Tencent Cloud Monitor can help track disk performance.