在安装某些应用软件时需要关闭Transparent HugePages(THP)，如新版Apache Doris，关闭方法总结如下： 执行命令
echo never >> /sys/kernel/mm/transparent_hugepage/enabled
echo never >> /sys/kernel/mm/transparent_hugepage/defrag
上述命令执行后实时生效，不需要重启机器（重启后失效）。执行成功后再看状态
cat /sys/kernel/mm/transparent_hugepage/enabled
cat /sys/kernel/mm/transparent_hugepage/defrag
为做到开机自启动，把这两个命令加入开机执行，防止重启后失效
vi /etc/rc.d/rc.local
#!/bin/bash
echo never >> /sys/kernel/mm/transparent_hugepage/enabled
echo never >> /sys/kernel/mm/transparent_hugepage/defrag
添加可执行权限
chmod a+x /etc/rc.d/rc.local
上述rc.local后续可能不推荐，可以自定义一个可执行脚本+服务 启动脚本
vi /opt/local-env-set.sh
#!/bin/bash
echo never >> /sys/kernel/mm/transparent_hugepage/enabled
echo never >> /sys/kernel/mm/transparent_hugepage/defrag
chmod a+x /opt/local-env-set.sh
编写服务
vim /usr/lib/systemd/system/local-env-set.service
[Unit]
Description=Local Environment Setting
ConditionFileIsExecutable=/opt/local-env-set.sh
After=network.target
[Service]
Type=forking
ExecStart=/opt/local-env-set.sh start
TimeoutSec=0
RemainAfterExit=yes
GuessMainPID=no
[Install]
WantedBy=multi-user.target
配置自启动
sudo systemctl daemon-reload
sudo systemctl enable local-env-set.service