ESXi Host’s /var/spool Directory Experiencing Full Storage

Recently, I encountered a ticket where the customer faced difficulties writing to the var directory. In this article, we’ll explore how I resolved this issue:

  • Begin by logging into the ESXi host via SSH and executing the following command:
vdf -h
  • Next, examine the output of the command mentioned above to determine if the available space is full or not.
  • If the space appears to be full in the /var directory, navigate to /var using this command:
cd /var
  • Once within the /var directory, execute the following command. This will display the sizes of all folders and files within the /var directory:
du -shc *
  • Identifying that /var/spool is the directory causing the issue, I proceed to navigate to it:
cd /var/spool
  • Upon inspection, I found numerous trap files, which likely resulted from errors in the host.

Having identified the root of the problem, let’s delve into the solution:

  • To disable SNMP, enter the following command:
esxcli system snmp set -e false
  • Subsequently, delete all contents of the /var/spool directory using this command:
rm *.trap

With these steps completed, the space issue within the /var directory should be resolved, allowing normal write operations.

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In conclusion, resolving the full storage issue in the ESXi host’s /var/spool directory is essential for optimal performance. By investigating the root cause, disabling SNMP, and removing unnecessary files, we’ve successfully addressed the problem.

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