This topic describes how to resolve the issue of Linux instance inaccessibility caused by excessively large huge page memory settings by lowering the value of the vm.nr_hugepages parameter.

Prerequisites

To improve fault tolerance and ensure data security, we recommend that you create a snapshot for the instance.

Procedure

Execute the following command to back up the /etc/sysctl.conf file.

cp /etc/sysctl.conf /etc/sysctl.conf_bak

Execute the following command and edit the /etc/sysctl.conf file.

vim /etc/sysctl.conf

Press the "A" key to enter edit mode, locate the vm.nr_hugepages configuration item, and lower its value to a reasonable level based on your actual business needs.

Press "Shift + :" and then enter wq.

Press the "Enter" key to save and exit the file.

Execute the following command to make the configuration take effect.

sysctl -p

Last updated: 2026.04.13 16:50:02

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