When deploying docker on a virtual machine, it is found that the disk memory is full:
open /var/lib/dpkg/info/libc6:amd64.templates: no space left on device
1. Enter the df -h command to view the disk usage of the virtual machine, as shown in the figure:
It can be seen that /dev/mapper/centos-root occupies 99%, which makes it impossible to write data
2. Enter cd / && du -hx--max-depth=1 to see which directory is too high, and adjust the contents of the too high directory
It can be seen that the ./cache file currently occupies the most memory. This is the occupation after I expanded and deleted the file. Before, the document occupied a lot. Find the document that takes up the most memory, enter the document, and then execute du -h -x --max-depth=1 to view the document that occupies the memory and delete unnecessary files.
3. Check whether there is still space occupied by the process after deleting the file.
Use the lsof |grep delete statement to view the corresponding process number;
If so, use the kill -9 process number command to kill the process
4. Virtual machine expansion
View the disk number command: ls /dev/sd*
Create pv command: pvcreate /dev/sda4
Adding pv to vg is equivalent to expanding vg: vgs extends vg, use gextend centos /dev/sda4 command
After expansion, use the lvs command to check
To extend lv, use the lvextend command: lvextend -L +20G /dev/mapper/centos-root
After the operation, re-read the system size: xfs_growfs /dev/mapper/centos-root
Enter df -h again to view the expansion
