DOC-12163 thp-disable steps are not applicable to Rocky linux

modules/install/pages/thp-disable.adoc

@@ -14,6 +14,11 @@ However, THP is detrimental to Couchbase's performance (as it is for nearly all
 
 You must disable THP on Linux systems to ensure the optimal performance of Couchbase Server.
 
+NOTE: If you are using Rocky Linux, then <<using-thp-service, use the instructions to install the THP disabler as a system service.>>
+
+
+
+
 [#init-script]
 == Using Init Script
 
@@ -237,3 +242,66 @@ If THP is properly disabled, the output of both commands should be the following
 ----
 always madvise [never]
 ----
+
+[#using-thp-service]
+== Using a THP Service
+
+. Create a service file.
++
+[source, console]
+----
+vi /etc/systemd/system/disable-thp.service
+----
+
+. Add the service configuration details to the file and then save it.
++
+[source, console]
+----
+[Unit]
+Description=Disable Transparent Huge Pages (THP)
+DefaultDependencies=no
+After=sysinit.target local-fs.target
+Before=couchbase-server.service
+
+[Service]
+Type=oneshot
+ExecStart=/bin/sh -c 'echo never | tee /sys/kernel/mm/transparent_hugepage/enabled > /dev/null'
+ExecStart=/bin/sh -c 'echo never | tee /sys/kernel/mm/transparent_hugepage/defrag > /dev/null'
+
+[Install]
+WantedBy=basic.target
+----
+
+. Reload the `systemctl` files.
++
+[source, console]
+----
+sudo systemctl daemon-reload
+----
+
+. Start the service.
++
+[source, console]
+----
+sudo systemctl start disable-thp
+----
+
+. Ensure that the service will start whenever the system is rebooted.
++
+[source, console]
+----
+sudo systemctl enable disable-thp
+----
+
+[#verify-thp-service]
+== Verify THP  is Disabled
+
+Execute the following commands to ensure the service has disabled the THP.
+
+[source, console]
+----
+cat /sys/kernel/mm/transparent_hugepage/enabled
+cat /sys/kernel/mm/transparent_hugepage/defrag
+----
+
+