Tidb 主机系统参数优化shell

#!/bin/bash
#
echo "vm.swappiness = 0">> /etc/sysctl.conf
swapoff -a && swapon -a
sysctl -p
systemctl stop firewalld.service
systemctl disable firewalld.service

yum install -y ntp ntpdate
/usr/sbin/ntpdate ntp.aliyun.com

echo never > /sys/kernel/mm/transparent_hugepage/enabled
echo never > /sys/kernel/mm/transparent_hugepage/defrag

echo "noop" > /sys/block/sda/queue/scheduler

cat /sys/kernel/mm/transparent_hugepage/enabled
cat /sys/block/sda/queue/scheduler

mkdir /etc/tuned/balanced-tidb-optimal/
touch /etc/tuned/balanced-tidb-optimal/tuned.conf
cat << EOF >> touch /etc/tuned/balanced-tidb-optimal/tuned.conf
[main]
include=balanced

[cpu]
governor=performance

[vm]
transparent_hugepages=never

[disk]
devices_udev_regex=(ID_SERIAL=36d0946606d79f90025f3e09a0c1fc035)|(ID_SERIAL=36d0946606d79f90025f3e09a0c1f9e81)
elevator=noop
EOF

tuned-adm profile balanced-tidb-optimal

echo "fs.file-max = 1000000">> /etc/sysctl.conf
echo "net.core.somaxconn = 32768">> /etc/sysctl.conf
echo "net.ipv4.tcp_tw_recycle = 0">> /etc/sysctl.conf
echo "net.ipv4.tcp_syncookies = 0">> /etc/sysctl.conf
echo "vm.overcommit_memory = 1">> /etc/sysctl.conf
echo "vm.swappiness = 0">> /etc/sysctl.conf
sysctl -p

cat << EOF >>/etc/security/limits.conf
tidb soft nofile 1000000
tidb hard nofile 1000000
tidb soft stack 32768
tidb hard stack 32768
EOF

useradd tidb &&
passwd tidb <<EOF
123
123
EOF

cat << EOF >> /etc/sudoers
tidb ALL=(ALL) NOPASSWD: ALL
EOF

yum -y install numactl

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ssh-keygen -t rsa
ssh-copy-id -i ~/.ssh/id_rsa.pub 192.168.1.xxx

ssh-copy-id -i ~/.ssh/id_rsa.pub 192.168.1.yyy