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Chapter 20. Managing Resource Usage
When Red Hat Gluster Storage is deployed on the same machine as other resource intensive software and services, it can be useful to limit the resources that glusterd attempts to use in order to avoid resource contention between processes.
On Red Hat Gluster Storage 3.2 and higher deployments based on Red Hat Enterprise Linux 7, this can be configured using gdeploy. For more information, see Section 5.1.11, “Limiting Gluster Resources”.
On earlier versions of Red Hat Gluster Storage, it is necessary to manually configure a control group slice for the glusterd service in order to manage glusterd's access to system resources.
Procedure 20.1. Limiting glusterd resources on RHEL7 based Red Hat Gluster Storage
Stop all gluster processes
# systemctl stop glusterd
Important
Ifglusterdcrashes, there is no functionality impact to this crash as it occurs during the shutdown. For more information, see Section 24.3, “ResolvingglusterdCrash”Create a service configuration directory for glusterd
# mkdir /etc/systemd/system/glusterd.service.d
Create a service configuration file
# echo "[Service] CPUAccounting=yes Slice=glusterfs.slice" >> /etc/systemd/system/glusterd.service.d/99-cpu.conf
Create a slice file
The following defines a slice that setsCPUQuotato the recommended value of400%(four cores).# echo "[Slice] CPUQuota=400%" >> /etc/systemd/system/glusterfs.slice
You can alter the percentage to suit your environment by editing the value in the slice file:# systemctl set-property glusterfs.slice CPUQuota=value
Restart the system daemon
# systemctl daemon-reload
Start gluster processes
# systemctl start glusterd
For more information about configuring resource management on Red Hat Enterprise Linux 7, see the Resource Management Guide: https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/7/html-single/Resource_Management_Guide/index.html#sec-What_are_Control_Groups
Resource management works differently on Red Hat Enterprise Linux 6. See the Red Hat Enterprise Linux 6 Resource Management Guide for details: https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/6/html/Resource_Management_Guide/ch-Using_Control_Groups.html
