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https://github.com/dunwu/linux-tutorial.git
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43 lines
1.4 KiB
Bash
43 lines
1.4 KiB
Bash
#!/usr/bin/env bash
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# ---------------------------------------------------------------------------------
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# 控制台颜色
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BLACK="\033[1;30m"
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RED="\033[1;31m"
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GREEN="\033[1;32m"
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YELLOW="\033[1;33m"
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BLUE="\033[1;34m"
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PURPLE="\033[1;35m"
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CYAN="\033[1;36m"
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RESET="$(tput sgr0)"
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# ---------------------------------------------------------------------------------
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###################################################################################
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# 使用 NTP 进行时间同步
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# 参考：https://www.cnblogs.com/quchunhui/p/7658853.html
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# @author: Zhang Peng
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###################################################################################
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printf "\n${GREEN}>>>>>>>>> 设置 NTP 开始${RESET}\n"
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printf "\n${CYAN}>>>> 安装 NTP 服务${RESET}\n"
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yum -y install ntp
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ip=$(ip addr | awk '/^[0-9]+: / {}; /inet.*global/ {print gensub(/(.*)\/(.*)/, "\\1", "g", $2)}')
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/sbin/iptables -A INPUT -p UDP -i eth0 -s ${ip}/24 --dport 123 -j ACCEPT
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printf "\n${CYAN}>>>> 启动 NTP 服务${RESET}\n"
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systemctl start ntpd.service
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printf "\n${CYAN}>>>> 立即执行时间同步${RESET}\n"
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/usr/sbin/ntpdate ntp.sjtu.edu.cn
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printf "\n${CYAN}>>>> 自动定时同步时间${RESET}\n"
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echo "* 3 * * * /usr/sbin/ntpdate ntp.sjtu.edu.cn" >> /etc/crontab
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systemctl restart crond.service
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printf "\n${CYAN}>>>> 同步结束，当前系统时间：${RESET}\n"
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date
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printf "\n${GREEN}<<<<<<<< 设置 NTP 结束${RESET}\n"
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