系统优化脚本反对 Ubuntu 和 CentOS
装置零碎后常常有一些根底的系统优化装置，自己比拟懒，写了一个脚本，能够前期退出其余优化方面。
仓库地址：https://github.com/cby-chen/OS
后续可能会持续更新脚本
能够通过我的一键命令执行 bash -c "$(curl -L https://www.oiox.cn/os.sh)"
shell 脚本如下
#!/bin/bash
os=$(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 ["$selinux_status" -eq 0];then
sed -i "s#SELINUX=enforcing#SELINUX=disabled#g" /etc/sysconfig/selinux
setenforce 0
grep SELINUX=disabled /etc/sysconfig/selinux
getenforce
else
echo 'SELINUX 已处于敞开状态'
grep SELINUX=disabled /etc/sysconfig/selinux
getenforce
fi
action "实现禁用 SELINUX" /bin/true
echo "==========================================================="
sleep 3
}
function firewalldset(){
echo "======================== 敞开 firewalld======================="
echo '敞开防火墙'
systemctl disable --now firewalld
echo '验证如下'
systemctl list-unit-files | grep firewalld
echo '生产环境下倡议启用'
echo "==========================================================="
sleep 3
}
function ufwset(){
echo "======================== 敞开 ufw============================"
echo '敞开防火墙'
systemctl disable --now ufw
echo '验证如下'
systemctl list-unit-files | grep ufw
echo '生产环境下倡议启用'
echo "==========================================================="
sleep 3
}
function limitsset(){
echo "====================== 批改文件描述符 ========================"
echo '加大系统文件描述符最大值'
{
echo '* soft nofile 65536'
echo '* hard nofile 65536'
echo '* soft nproc 65536'
echo '* hard nproc 65536'
} >> file
echo '查看配置内容'
cat /etc/security/limits.conf
echo '设置软硬资源限度'
ulimit -Sn ; ulimit -Hn
echo "==========================================================="
sleep 3
}
function yumset(){
echo "====================== 开始批改 YUM 源 ========================"
echo '开始批改 YUM 源'
sudo sed -e 's|^mirrorlist=|#mirrorlist=|g' -e 's|^#baseurl=http://mirror.centos.org|baseurl=https://mirrors.tuna.tsinghua.edu.cn|g' -i.bak /etc/yum.repos.d/CentOS-*.repo
echo '开始装置惯例软件'
yum update -y
yum install curl git wget ntpdate lsof net-tools telnet vim lrzsz tree nmap nc sysstat epel* -y
echo "==========================================================="
sleep 3
}
function aptset(){
echo "====================== 开始批改 APT 源 ========================"
echo '开始批改 APT 源'
apt_stat=$(cat /etc/apt/sources.list | grep -v ^\# | awk -F/ '{print $3}' | grep -v ^$ | awk 'NR==1{print}')
sudo sed -i "s/$apt_stat/mirrors.ustc.edu.cn/g" /etc/apt/sources.list
echo '开始装置惯例软件'
apt update -y
apt upgrade -y
apt install vim htop net-tools lrzsz nmap telnet ntpdate sysstat curl git wget -y
echo "==========================================================="
sleep 3
}
function restartset(){
echo "=================== 禁用 ctrl+alt+del 重启 ===================="
rm -rf /usr/lib/systemd/system/ctrl-alt-del.target
echo "实现禁用 ctrl+alt+del 重启"
echo "==========================================================="
sleep 3
}
function historyset(){
echo "========================history 优化 ========================"
chk_his=$(cat /etc/profile | grep HISTTIMEFORMAT |wc -l)
if [$chk_his -eq 0];then
cat >> /etc/profile <<'EOF'
#设置 history 格局
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 "实现 history 优化"
echo "==========================================================="
sleep 3
}
function helloset(){
echo "======================== 欢送界面优化 ========================"
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 "\033[0;32m
# # ###### # # ####
# # # # # # #
###### ##### # # # #
# # # # # # #
# # # # # # #
# # ###### ###### ###### #### by chenby\033[0m"
# os
upSeconds="\$(cut -d. -f1 /proc/uptime)"
secs=\$((\${upSeconds}%60))
mins=\$((\${upSeconds}/60%60))
hours=\$((\${upSeconds}/3600%24))
days=\$((\${upSeconds}/86400))
UPTIME_INFO=\$(printf "%d days, %02dh %02dm %02ds" "\$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="\033[0;33m\${diskused}\033[0m of \033[1;34m\${disktotal}\033[0m disk space used (\033[0;33m\${diskusedper}\033[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="\033[0;33m\${one}\033[0m / \${five} / \${fifteen} with \033[1;34m\$(( cpun*cpuc))\033[0m core(s) at \033[1;34m\$(grep'^cpu MHz'/proc/cpuinfo | tail -1 | awk'{print \$4}')\033 MHz"
# mem
MEM_INFO="\$(cat /proc/meminfo | awk'/MemTotal:/{total=\$2/1024/1024;next} /MemAvailable:/{use=total-\$2/1024/1024; printf("\033[0;33m%.2fGiB\033[0m of \033[1;34m%.2fGiB\033[0m RAM used (\033[0;33m%.2f%%\033[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: \033[1;34m\$(date +"%Y-%m-%d %T")\033[0m
\033[0;1;31mProduct\033[0m............: \${MODEL_INFO}
\033[0;1;31mOS\033[0m.................: \${PRETTY_NAME}
\033[0;1;31mKernel\033[0m.............: \${KERNEL}
\033[0;1;31mCPU\033[0m................: \${CPU_INFO}
\033[0;1;31mHostname\033[0m...........: \033[1;34m\$(hostname)\033[0m
\033[0;1;31mIP Addresses\033[0m.......: \033[1;34m\${IP_INFO}\033[0m
\033[0;1;31mUptime\033[0m.............: \033[0;33m\${UPTIME_INFO}\033[0m
\033[0;1;31mMemory\033[0m.............: \${MEM_INFO}
\033[0;1;31mLoad Averages\033[0m......: \${LOADAVG_INFO}
\033[0;1;31mDisk Usage\033[0m.........: \${DISK_INFO}
\033[0;1;31mUsers online\033[0m.......: \033[1;34m\${USER_NUM}\033[0m
\033[0;1;31mRunning Processes\033[0m..: \033[1;34m\${RUNNING}\033[0m
\033[0;1;31mContainer Info\033[0m.....: \${CONTAINER_INFO}
"
EOF
echo "==========================================================="
sleep 3
}
function sshset(){
echo "========================root 登录优化 ========================"
echo "生产环境不倡议开启 设置 root 明码"
read -p "输出 root 明码" rootpw
echo "root:$rootpw" |chpasswd
echo 'PermitRootLogin yes' >> /etc/ssh/sshd_config
systemctl restart sshd
echo "root 明码批改为 $rootpw"
echo "==========================================================="
sleep 3
}
function allin() {if [ "$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} 一键根底优化脚本 ${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} 阐明 ${PLAIN}: #"
echo -e "# #"
echo "####################################################################"
echo "-------------"
echo -e "${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 "请抉择操作 [0-2]：" chenby
case $chenby in
0)
exit 0
;;
1)
allin
;;
2)
setun
;;
*)
colorEcho $RED "请抉择正确的操作！"
exit 1
;;
esac
}
function setun() {
echo "-------------"
echo -e "${GREEN}1.${PLAIN} 禁用 SELINUX"
echo "-------------"
echo -e "${GREEN}2.${PLAIN} 敞开 firewalld"
echo "-------------"
echo -e "${GREEN}3.${PLAIN} 敞开 ufw"
echo "-------------"
echo -e "${GREEN}4.${PLAIN} 批改文件描述符"
echo "-------------"
echo -e "${GREEN}5.${PLAIN} 开始批改 YUM 源"
echo "-------------"
echo -e "${GREEN}6.${PLAIN} 开始批改 APT 源"
echo "-------------"
echo -e "${GREEN}7.${PLAIN} 禁用 ctrl+alt+del 重启"
echo "-------------"
echo -e "${GREEN}8.${PLAIN} history 优化"
echo "-------------"
echo -e "${GREEN}9.${PLAIN} 欢送界面优化"
echo "-------------"
echo -e "${GREEN}10.${PLAIN} 设置 root 明码"
echo "-------------"
echo -e "${GREEN}0.${PLAIN} 退出"
echo "-------------"
read -p "请抉择操作 [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 $RED "请抉择正确的操作！"
exit 1
;;
esac
}
if [$(id -u) -eq 0 ];then
menu
else
echo "非 root 用户! 请应用 root 用户！！！"
exit 1
fi
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