系统优化脚本支持Ubuntu和CentOS
安装系统后经常有一些基础的系统优化安装，本人比较懒，写了一个脚本，可以后期加入其他优化方面。
仓库地址：https://github.com/cby-chen/OS
后续可能会继续更新脚本
可以通过我的一键命令执行 bash -c "$(curl -L https://www.oiox.cn/os.sh)"
shell脚本如下
代码语言：shell复制#!/bin/bash
os=$(cat /etc/os-release 2>/dev/null | grep ^ID= | awk -F= '{print $2}')
function selinuxset(){
selinux_status=$(grep -c "SELINUX=disabled" /etc/sysconfig/selinux)
echo "========================禁用SELINUX========================"
if [ "$selinux_status" -eq 0 ];then
sed -i "s#SELINUX=enforcing#SELINUX=disabled#g" /etc/sysconfig/selinux
setenforce 0
grep SELINUX=disabled /etc/sysconfig/selinux
getenforce
else
echo 'SELINUX已处于关闭状态'
grep SELINUX=disabled /etc/sysconfig/selinux
getenforce
fi
action "完成禁用SELINUX" /bin/true
echo "==========================================================="
sleep 3
}
function firewalldset(){
echo "========================关闭firewalld======================="
echo '关闭防火墙'
systemctl disable --now firewalld
echo '验证如下'
systemctl list-unit-files | grep firewalld
echo '生产环境下建议启用'
echo "==========================================================="
sleep 3
}
function ufwset(){
echo "========================关闭ufw============================"
echo '关闭防火墙'
systemctl disable --now ufw
echo '验证如下'
systemctl list-unit-files | grep ufw
echo '生产环境下建议启用'
echo "==========================================================="
sleep 3
}
function limitsset(){
echo "======================修改文件描述符========================"
echo '加大系统文件描述符最大值'
{
echo '* soft nofile 65536'
echo '* hard nofile 65536'
echo '* soft nproc 65536'
echo '* hard nproc 65536'
} >> file
echo '查看配置内容'
cat /etc/security/limits.conf
echo '设置软硬资源限制'
ulimit -Sn ; ulimit -Hn
echo "==========================================================="
sleep 3
}
function yumset(){
echo "======================开始修改YUM源========================"
echo '开始修改YUM源'
sudo sed -e 's|^mirrorlist=|#mirrorlist=|g' -e 's|^#baseurl=http://mirror.centos.org|baseurl=https://mirrors.tuna.tsinghua.edu.cn|g' -i.bak /etc/yum.repos.d/CentOS-*.repo
echo '开始安装常规软件'
yum update -y
yum install curl git wget ntpdate lsof net-tools telnet vim lrzsz tree nmap nc sysstat epel* -y
echo "==========================================================="
sleep 3
}
function aptset(){
echo "======================开始修改APT源========================"
echo '开始修改APT源'
apt_stat=$(cat /etc/apt/sources.list | grep -v ^# | awk -F/ '{print $3}' | grep -v ^$ | awk 'NR==1{print}')
sudo sed -i "s/$apt_stat/mirrors.ustc.edu.cn/g" /etc/apt/sources.list
echo '开始安装常规软件'
apt update -y
apt upgrade -y
apt install vim htop net-tools lrzsz nmap telnet ntpdate sysstat curl git wget -y
echo "==========================================================="
sleep 3
}
function restartset(){
echo "===================禁用ctrl alt del重启===================="
rm -rf /usr/lib/systemd/system/ctrl-alt-del.target
echo "完成禁用ctrl alt del重启"
echo "==========================================================="
sleep 3
}
function historyset(){
echo "========================history优化========================"
chk_his=$(cat /etc/profile | grep HISTTIMEFORMAT |wc -l)
if [ $chk_his -eq 0 ];then
cat >> /etc/profile <<'EOF'
#设置history格式
export HISTTIMEFORMAT="[%Y-%m-%d %H:%M:%S] [`whoami`] [`who am i|awk '{print $NF}'|sed -r 's#[()]##g'`]: "
#记录shell执行的每一条命令
export PROMPT_COMMAND='
if [ -z "$OLD_PWD" ];then
export OLD_PWD=$PWD;
fi;
if [ ! -z "$LAST_CMD" ] && [ "$(history 1)" != "$LAST_CMD" ]; then
logger -t `whoami`_shell_dir "[$OLD_PWD]$(history 1)";
fi;
export LAST_CMD="$(history 1)";
export OLD_PWD=$PWD;'
EOF
source /etc/profile
else
echo "优化项已存在。"
fi
echo "完成history优化"
echo "==========================================================="
sleep 3
}
function helloset(){
echo "========================欢迎界面优化========================"
cat << EOF > /etc/profile.d/login-info.sh
#!/bin/sh
#
# @Time : 2022-04-21
# @Author : chenby
# @Desc : ssh login banner
export PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
shopt -q login_shell && : || return 0
echo -e " 33[0;32m
# # ###### # # ####
# # # # # # #
###### ##### # # # #
# # # # # # #
# # # # # # #
# # ###### ###### ###### #### by chenby 33[0m"
# os
upSeconds="$(cut -d. -f1 /proc/uptime)"
secs=$((${upSeconds}`))
mins=$((${upSeconds}/60`))
hours=$((${upSeconds}/3600$))
days=$((${upSeconds}/86400))
UPTIME_INFO=$(printf "%d days, dh dm ds" "$days" "$hours" "$mins" "$secs")
if [ -f /etc/redhat-release ] ; then
PRETTY_NAME=$(< /etc/redhat-release)
elif [ -f /etc/debian_version ]; then
DIST_VER=$(</etc/debian_version)
PRETTY_NAME="$(grep PRETTY_NAME /etc/os-release | sed -e 's/PRETTY_NAME=//g' -e 's/"//g') ($DIST_VER)"
else
PRETTY_NAME=$(cat /etc/*-release | grep "PRETTY_NAME" | sed -e 's/PRETTY_NAME=//g' -e 's/"//g')
fi
if [[ -d "/system/app/" && -d "/system/priv-app" ]]; then
model="$(getprop ro.product.brand) $(getprop ro.product.model)"
elif [[ -f /sys/devices/virtual/dmi/id/product_name ||
-f /sys/devices/virtual/dmi/id/product_version ]]; then
model="$(< /sys/devices/virtual/dmi/id/product_name)"
model =" $(< /sys/devices/virtual/dmi/id/product_version)"
elif [[ -f /sys/firmware/devicetree/base/model ]]; then
model="$(< /sys/firmware/devicetree/base/model)"
elif [[ -f /tmp/sysinfo/model ]]; then
model="$(< /tmp/sysinfo/model)"
fi
MODEL_INFO=${model}
KERNEL=$(uname -srmo)
USER_NUM=$(who -u | wc -l)
RUNNING=$(ps ax | wc -l | tr -d " ")
# disk
totaldisk=$(df -h -x devtmpfs -x tmpfs -x debugfs -x aufs -x overlay --total 2>/dev/null | tail -1)
disktotal=$(awk '{print $2}' <<< "${totaldisk}")
diskused=$(awk '{print $3}' <<< "${totaldisk}")
diskusedper=$(awk '{print $5}' <<< "${totaldisk}")
DISK_INFO=" 33[0;33m${diskused} 33[0m of 33[1;34m${disktotal} 33[0m disk space used ( 33[0;33m${diskusedper} 33[0m)"
# cpu
cpu=$(awk -F':' '/^model name/ {print $2}' /proc/cpuinfo | uniq | sed -e 's/^[ t]*//')
cpun=$(grep -c '^processor' /proc/cpuinfo)
cpuc=$(grep '^cpu cores' /proc/cpuinfo | tail -1 | awk '{print $4}')
cpup=$(grep '^physical id' /proc/cpuinfo | wc -l)
CPU_INFO="${cpu} ${cpup}P ${cpuc}C ${cpun}L"
# get the load averages
read one five fifteen rest < /proc/loadavg
LOADAVG_INFO=" 33[0;33m${one} 33[0m / ${five} / ${fifteen} with 33[1;34m$(( cpun*cpuc )) 33[0m core(s) at 33[1;34m$(grep '^cpu MHz' /proc/cpuinfo | tail -1 | awk '{print $4}') 33 MHz"
# mem
MEM_INFO="$(cat /proc/meminfo | awk '/MemTotal:/{total=$2/1024/1024;next} /MemAvailable:/{use=total-$2/1024/1024; printf(" 33[0;33m%.2fGiB 33[0m of 33[1;34m%.2fGiB 33[0m RAM used ( 33[0;33m%.2f%% 33[0m)",use,total,(use/total)*100);}')"
# network
# extranet_ip=" and $(curl -s ip.cip.cc)"
IP_INFO="$(ip a | grep glo | awk '{print $2}' | head -1 | cut -f1 -d/)${extranet_ip:-}"
# Container info
CONTAINER_INFO="$(sudo /usr/bin/crictl ps -a -o yaml 2> /dev/null | awk '/^ state: /{gsub("CONTAINER_", "", $NF) S[$NF]}END{for(m in S) printf "%s%s:%s ",substr(m,1,1),tolower(substr(m,2)),S[m]}')Images:$(sudo /usr/bin/crictl images -q 2> /dev/null | wc -l)"
# info
echo -e "
Information as of: 33[1;34m$(date "%Y-%m-%d %T") 33[0m
33[0;1;31mProduct 33[0m............: ${MODEL_INFO}
33[0;1;31mOS 33[0m.................: ${PRETTY_NAME}
33[0;1;31mKernel 33[0m.............: ${KERNEL}
33[0;1;31mCPU 33[0m................: ${CPU_INFO}
33[0;1;31mHostname 33[0m...........: 33[1;34m$(hostname) 33[0m
33[0;1;31mIP Addresses 33[0m.......: 33[1;34m${IP_INFO} 33[0m
33[0;1;31mUptime 33[0m.............: 33[0;33m${UPTIME_INFO} 33[0m
33[0;1;31mMemory 33[0m.............: ${MEM_INFO}
33[0;1;31mLoad Averages 33[0m......: ${LOADAVG_INFO}
33[0;1;31mDisk Usage 33[0m.........: ${DISK_INFO}
33[0;1;31mUsers online 33[0m.......: 33[1;34m${USER_NUM} 33[0m
33[0;1;31mRunning Processes 33[0m..: 33[1;34m${RUNNING} 33[0m
33[0;1;31mContainer Info 33[0m.....: ${CONTAINER_INFO}
"
EOF
echo "==========================================================="
sleep 3
}
function sshset(){
echo "========================root登录优化========================"
echo "生产环境不建议开启 设置root密码"
read -p "输入root密码" rootpw
echo "root:$rootpw" |chpasswd
echo 'PermitRootLogin yes' >> /etc/ssh/sshd_config
systemctl restart sshd
echo "root密码修改为$rootpw"
echo "==========================================================="
sleep 3
}
function allin() {
if [ "$os" = ""centos"" ]; then
selinuxset
firewalldset
limitsset
yumset
restartset
historyset
helloset
fi
if [ "$os" = "ubuntu" ]; then
sshset
ufwset
limitsset
aptset
restartset
historyset
helloset
fi
}
function menu() {
clear
echo "#####################################################################"
echo -e "# ${RED}一键基础优化脚本${PLAIN} #"
echo -e "# ${GREEN}作者${PLAIN}: chenby #"
echo -e "# ${GREEN}网址${PLAIN}: https://www.oiox.cn #"
echo -e "# ${GREEN}版本${PLAIN}: V1.0 #"
echo -e "# ${GREEN}说明${PLAIN}: #"
echo -e "# #"
echo "####################################################################"
echo " -------------"
echo -e " ${GREEN}1.${PLAIN} 一键优化"
echo " -------------"
echo -e " ${GREEN}2.${PLAIN} 自定义优化"
echo " -------------"
echo -e " ${GREEN}0.${PLAIN} 退出"
echo " -------------"
read -p " 请选择操作[0-2]：" chenby
case $chenby in
0)
exit 0
;;
1)
allin
;;
2)
setun
;;
*)
colorEcho $RED " 请选择正确的操作！"
exit 1
;;
esac
}
function setun() {
echo " -------------"
echo -e " ${GREEN}1.${PLAIN} 禁用SELINUX"
echo " -------------"
echo -e " ${GREEN}2.${PLAIN} 关闭firewalld"
echo " -------------"
echo -e " ${GREEN}3.${PLAIN} 关闭ufw"
echo " -------------"
echo -e " ${GREEN}4.${PLAIN} 修改文件描述符"
echo " -------------"
echo -e " ${GREEN}5.${PLAIN} 开始修改YUM源"
echo " -------------"
echo -e " ${GREEN}6.${PLAIN} 开始修改APT源"
echo " -------------"
echo -e " ${GREEN}7.${PLAIN} 禁用ctrl alt del重启"
echo " -------------"
echo -e " ${GREEN}8.${PLAIN} history优化"
echo " -------------"
echo -e " ${GREEN}9.${PLAIN} 欢迎界面优化"
echo " -------------"
echo -e " ${GREEN}10.${PLAIN} 设置root密码"
echo " -------------"
echo -e " ${GREEN}0.${PLAIN} 退出"
echo " -------------"
read -p " 请选择操作[0-2]：" cby
case $cby in
0)
exit 0
;;
1)
if [ "$os" = ""centos"" ]; then
selinuxset
fi
if [ "$os" = "ubuntu" ]; then
echo 'Ubuntu无需设置'
fi
;;
2)
if [ "$os" = ""centos"" ]; then
firewalldset
fi
if [ "$os" = "ubuntu" ]; then
echo 'Ubuntu无需设置'
fi
;;
3)
if [ "$os" = ""centos"" ]; then
echo 'CentOS无需设置'
fi
if [ "$os" = "ubuntu" ]; then
ufwset
fi
;;
4)
limitsset
;;
5)
if [ "$os" = ""centos"" ]; then
yumset
fi
if [ "$os" = "ubuntu" ]; then
echo 'Ubuntu无需设置'
fi
;;
6)
if [ "$os" = ""centos"" ]; then
echo 'CentOS无需设置'
fi
if [ "$os" = "ubuntu" ]; then
aptset
fi
;;
7)
restartset
;;
8)
historyset
;;
9)
helloset
;;
10)
if [ "$os" = ""centos"" ]; then
echo 'CentOS无需设置'
fi
if [ "$os" = "ubuntu" ]; then
sshset
fi
;;
*)
colorEcho $RED " 请选择正确的操作！"
exit 1
;;
esac
}
if [ $(id -u) -eq 0 ];then
menu
else
echo "非root用户!请使用root用户！！！"
exit 1
fi关于
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