diff --git a/check-before-deployment.md b/check-before-deployment.md
index 378e5f529d186..3a284577fceaa 100644
--- a/check-before-deployment.md
+++ b/check-before-deployment.md
@@ -23,8 +23,6 @@ Take the `/dev/nvme0n1` data disk as an example:
 
 1. View the data disk.
 
-    {{< copyable "shell-root" >}}
-
     ```bash
     fdisk -l
     ```
@@ -35,8 +33,6 @@ Take the `/dev/nvme0n1` data disk as an example:
 
 2. Create the partition.
 
-    {{< copyable "shell-root" >}}
-
     ```bash
     parted -s -a optimal /dev/nvme0n1 mklabel gpt -- mkpart primary ext4 1 -1
     ```
@@ -54,8 +50,6 @@ Take the `/dev/nvme0n1` data disk as an example:
 
 3. Format the data disk to the ext4 filesystem.
 
-    {{< copyable "shell-root" >}}
-
     ```bash
     mkfs.ext4 /dev/nvme0n1p1
     ```
@@ -64,8 +58,6 @@ Take the `/dev/nvme0n1` data disk as an example:
 
     In this example, the UUID of nvme0n1p1 is `c51eb23b-195c-4061-92a9-3fad812cc12f`.
 
-    {{< copyable "shell-root" >}}
-
     ```bash
     lsblk -f
     ```
@@ -83,8 +75,6 @@ Take the `/dev/nvme0n1` data disk as an example:
 
 5. Edit the `/etc/fstab` file and add the `nodelalloc` mount options.
 
-    {{< copyable "shell-root" >}}
-
     ```bash
     vi /etc/fstab
     ```
@@ -95,8 +85,6 @@ Take the `/dev/nvme0n1` data disk as an example:
 
 6. Mount the data disk.
 
-    {{< copyable "shell-root" >}}
-
     ```bash
     mkdir /data1 && \
     systemctl daemon-reload && \
@@ -105,8 +93,6 @@ Take the `/dev/nvme0n1` data disk as an example:
 
 7. Check using the following command.
 
-    {{< copyable "shell-root" >}}
-
     ```bash
     mount -t ext4
     ```
@@ -177,8 +163,6 @@ The rest of this section describes how to stop the firewall service of a target
 
 1. Check the firewall status. Take CentOS Linux release 7.7.1908 (Core) as an example.
 
-    {{< copyable "shell-regular" >}}
-
     ```shell
     sudo firewall-cmd --state
     sudo systemctl status firewalld.service
@@ -186,24 +170,18 @@ The rest of this section describes how to stop the firewall service of a target
 
 2. Stop the firewall service.
 
-    {{< copyable "shell-regular" >}}
-
     ```bash
     sudo systemctl stop firewalld.service
     ```
 
 3. Disable automatic start of the firewall service.
 
-    {{< copyable "shell-regular" >}}
-
     ```bash
     sudo systemctl disable firewalld.service
     ```
 
 4. Check the firewall status.
 
-    {{< copyable "shell-regular" >}}
-
     ```bash
     sudo systemctl status firewalld.service
     ```
@@ -218,8 +196,6 @@ To check whether the NTP service is installed and whether it synchronizes with t
 
 1. Run the following command. If it returns `running`, then the NTP service is running.
 
-    {{< copyable "shell-regular" >}}
-
     ```bash
     sudo systemctl status ntpd.service
     ```
@@ -232,8 +208,6 @@ To check whether the NTP service is installed and whether it synchronizes with t
 
     - If it returns `Unit ntpd.service could not be found.`, then try the following command to see whether your system is configured to use `chronyd` instead of `ntpd` to perform clock synchronization with NTP:
 
-        {{< copyable "shell-regular" >}}
-
         ```bash
         sudo systemctl status chronyd.service
         ```
@@ -254,8 +228,6 @@ To check whether the NTP service is installed and whether it synchronizes with t
     >
     > For the Ubuntu system, you need to install the `ntpstat` package.
 
-    {{< copyable "shell-regular" >}}
-
     ```bash
     ntpstat
     ```
@@ -286,8 +258,6 @@ To check whether the NTP service is installed and whether it synchronizes with t
     >
     > This only applies to systems that use Chrony instead of NTPd.
 
-    {{< copyable "shell-regular" >}}
-
     ```bash
     chronyc tracking
     ```
@@ -324,8 +294,6 @@ To check whether the NTP service is installed and whether it synchronizes with t
 
 To make the NTP service start synchronizing as soon as possible, run the following command. Replace `pool.ntp.org` with your NTP server.
 
-{{< copyable "shell-regular" >}}
-
 ```bash
 sudo systemctl stop ntpd.service && \
 sudo ntpdate pool.ntp.org && \
@@ -334,8 +302,6 @@ sudo systemctl start ntpd.service
 
 To install the NTP service manually on the CentOS 7 system, run the following command:
 
-{{< copyable "shell-regular" >}}
-
 ```bash
 sudo yum install ntp ntpdate && \
 sudo systemctl start ntpd.service && \
@@ -358,8 +324,6 @@ Take the following steps to check the current operating system configuration and
 
 1. Execute the following command to see whether THP is enabled or disabled:
 
-    {{< copyable "shell-regular" >}}
-
     ```bash
     cat /sys/kernel/mm/transparent_hugepage/enabled
     ```
@@ -406,8 +370,6 @@ Take the following steps to check the current operating system configuration and
 
 3. Execute the following command to see the `ID_SERIAL` of the disk:
 
-    {{< copyable "shell-regular" >}}
-
     ```bash
     udevadm info --name=/dev/sdb | grep ID_SERIAL
     ```
@@ -424,8 +386,6 @@ Take the following steps to check the current operating system configuration and
 
 4. Execute the following command to see the power policy of the cpufreq module:
 
-    {{< copyable "shell-regular" >}}
-
     ```bash
     cpupower frequency-info --policy
     ```
@@ -446,8 +406,6 @@ Take the following steps to check the current operating system configuration and
 
         1. Execute the `tuned-adm list` command to see the tuned profile of the current operating system:
 
-            {{< copyable "shell-regular" >}}
-
             ```bash
             tuned-adm list
             ```
@@ -471,8 +429,6 @@ Take the following steps to check the current operating system configuration and
 
         2. Create a new tuned profile:
 
-            {{< copyable "shell-regular" >}}
-
             ```bash
             mkdir /etc/tuned/balanced-tidb-optimal/
             vi /etc/tuned/balanced-tidb-optimal/tuned.conf
@@ -501,8 +457,6 @@ Take the following steps to check the current operating system configuration and
             >
             > If your device uses the `noop` or `none` I/O Scheduler, skip this step. No Scheduler configuration is needed in the tuned profile.
 
-            {{< copyable "shell-regular" >}}
-
             ```bash
             tuned-adm profile balanced-tidb-optimal
             ```
@@ -515,8 +469,6 @@ Take the following steps to check the current operating system configuration and
             >
             > Install the `grubby` package first before you execute `grubby`.
 
-            {{< copyable "shell-regular" >}}
-
             ```bash
             grubby --default-kernel
             ```
@@ -527,20 +479,16 @@ Take the following steps to check the current operating system configuration and
 
         2. Execute `grubby --update-kernel` to modify the kernel configuration:
 
-            {{< copyable "shell-regular" >}}
-
             ```bash
             grubby --args="transparent_hugepage=never" --update-kernel `grubby --default-kernel`
             ```
 
             > **Note:**
             >
-            > You can also specify the actual version number after `--update-kernel`, for example, `--update-kernel /boot/vmlinuz-3.10.0-957.el7.x86_64`.
+            > You can also specify the actual version number after `--update-kernel`, for example, `--update-kernel /boot/vmlinuz-3.10.0-957.el7.x86_64` or `ALL`.
 
         3. Execute `grubby --info` to see the modified default kernel configuration:
 
-            {{< copyable "shell-regular" >}}
-
             ```bash
             grubby --info /boot/vmlinuz-3.10.0-957.el7.x86_64
             ```
@@ -560,8 +508,6 @@ Take the following steps to check the current operating system configuration and
 
         4. Modify the current kernel configuration to immediately disable THP:
 
-            {{< copyable "shell-regular" >}}
-
             ```bash
             echo never > /sys/kernel/mm/transparent_hugepage/enabled
             echo never > /sys/kernel/mm/transparent_hugepage/defrag
@@ -569,8 +515,6 @@ Take the following steps to check the current operating system configuration and
 
         5. Configure the I/O Scheduler in the udev script:
 
-            {{< copyable "shell-regular" >}}
-
             ```bash
             vi /etc/udev/rules.d/60-tidb-schedulers.rules
             ```
@@ -587,8 +531,6 @@ Take the following steps to check the current operating system configuration and
             >
             > If your device uses the `noop` or `none` I/O Scheduler, skip this step. No udev rules configuration is needed.
 
-            {{< copyable "shell-regular" >}}
-
             ```bash
             udevadm control --reload-rules
             udevadm trigger --type=devices --action=change
@@ -596,8 +538,6 @@ Take the following steps to check the current operating system configuration and
 
         7. Create a service to configure the CPU power policy:
 
-            {{< copyable "shell-regular" >}}
-
             ```bash
             cat  >> /etc/systemd/system/cpupower.service << EOF
             [Unit]
@@ -612,8 +552,6 @@ Take the following steps to check the current operating system configuration and
 
         8. Apply the CPU power policy configuration service:
 
-            {{< copyable "shell-regular" >}}
-
             ```bash
             systemctl daemon-reload
             systemctl enable cpupower.service
@@ -622,8 +560,6 @@ Take the following steps to check the current operating system configuration and
 
 6. Execute the following command to verify the THP status:
 
-    {{< copyable "shell-regular" >}}
-
     ```bash
     cat /sys/kernel/mm/transparent_hugepage/enabled
     ```
@@ -634,8 +570,6 @@ Take the following steps to check the current operating system configuration and
 
 7. Execute the following command to verify the I/O Scheduler of the disk where the data directory is located:
 
-    {{< copyable "shell-regular" >}}
-
     ```bash
     cat /sys/block/sd[bc]/queue/scheduler
     ```
@@ -647,8 +581,6 @@ Take the following steps to check the current operating system configuration and
 
 8. Execute the following command to see the power policy of the cpufreq module:
 
-    {{< copyable "shell-regular" >}}
-
     ```bash
     cpupower frequency-info --policy
       ```
@@ -661,8 +593,6 @@ Take the following steps to check the current operating system configuration and
 
 9. Execute the following commands to modify the `sysctl` parameters:
 
-    {{< copyable "shell-regular" >}}
-
     ```bash
     echo "fs.file-max = 1000000">> /etc/sysctl.conf
     echo "net.core.somaxconn = 32768">> /etc/sysctl.conf
@@ -683,8 +613,6 @@ Take the following steps to check the current operating system configuration and
 
 10. Execute the following command to configure the user's `limits.conf` file:
 
-    {{< copyable "shell-regular" >}}
-
     ```bash
     cat << EOF >>/etc/security/limits.conf
     tidb           soft    nofile          1000000
@@ -700,8 +628,6 @@ This section describes how to manually configure the SSH mutual trust and sudo w
 
 1. Log in to the target machine respectively using the `root` user account, create the `tidb` user and set the login password.
 
-    {{< copyable "shell-root" >}}
-
     ```bash
     useradd tidb && \
     passwd tidb
@@ -709,8 +635,6 @@ This section describes how to manually configure the SSH mutual trust and sudo w
 
 2. To configure sudo without password, run the following command, and add `tidb ALL=(ALL) NOPASSWD: ALL` to the end of the file:
 
-    {{< copyable "shell-root" >}}
-
     ```bash
     visudo
     ```
@@ -721,8 +645,6 @@ This section describes how to manually configure the SSH mutual trust and sudo w
 
 3. Use the `tidb` user to log in to the control machine, and run the following command. Replace `10.0.1.1` with the IP of your target machine, and enter the `tidb` user password of the target machine as prompted. After the command is executed, SSH mutual trust is already created. This applies to other machines as well. Newly created `tidb` users do not have the `.ssh` directory. To create such a directory, execute the command that generates the RSA key. To deploy TiDB components on the control machine, configure mutual trust for the control machine and the control machine itself.
 
-    {{< copyable "shell-regular" >}}
-
     ```bash
     ssh-keygen -t rsa
     ssh-copy-id -i ~/.ssh/id_rsa.pub 10.0.1.1
@@ -730,8 +652,6 @@ This section describes how to manually configure the SSH mutual trust and sudo w
 
 4. Log in to the control machine using the `tidb` user account, and log in to the IP of the target machine using `ssh`. If you do not need to enter the password and can successfully log in, then the SSH mutual trust is successfully configured.
 
-    {{< copyable "shell-regular" >}}
-
     ```bash
     ssh 10.0.1.1
     ```
@@ -742,8 +662,6 @@ This section describes how to manually configure the SSH mutual trust and sudo w
 
 5. After you log in to the target machine using the `tidb` user, run the following command. If you do not need to enter the password and can switch to the `root` user, then sudo without password of the `tidb` user is successfully configured.
 
-    {{< copyable "shell-regular" >}}
-
     ```bash
     sudo -su root
     ```
diff --git a/tiup/tiup-component-cluster-check.md b/tiup/tiup-component-cluster-check.md
index 02f557ce0d1c1..1147901f9e0ce 100644
--- a/tiup/tiup-component-cluster-check.md
+++ b/tiup/tiup-component-cluster-check.md
@@ -52,6 +52,16 @@ Check the values of the following kernel parameters:
 
 Check whether THP is enabled on the target machine. It is recommended to disable THP.
 
+To check if THP is enabled you can run this:
+
+```
+cat /sys/kernel/mm/transparent_hugepage/enabled
+```
+
+If it is not set to `never`, you can change it with `grubby --update-kernel=ALL --args="transparent_hugepage=never"`.
+
+To change the running configuration, either reboot or run `echo never > /sys/kernel/mm/transparent_hugepage/enabled`.
+
 ### System limits
 
 Check the limit values in the `/etc/security/limits.conf` file:
diff --git a/tune-operating-system.md b/tune-operating-system.md
index 5ebe079bdf903..9d48fca75e5c7 100644
--- a/tune-operating-system.md
+++ b/tune-operating-system.md
@@ -69,6 +69,7 @@ It is **NOT** recommended to use THP for database applications, because database
 ```shell
 echo never > /sys/kernel/mm/transparent_hugepage/enabled
 echo never > /sys/kernel/mm/transparent_hugepage/defrag
+grubby --update-kernel="$KERNEL" --args='transparent_hugepage=never'
 ```
 
 ### Memory—virtual memory parameters