Chrony [1]是CentOS 7發行之後用來取代ntp的系統校時工具，安裝設定都很簡易，留個操作筆記~ 🤖🤓🤖
# 變更伺服器的時區設定
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sudo timedatectl set-timezone Asia/Taipei sudo timedatectl set-ntp yes |
# 安裝Chrony系統校時工具
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yum install -y epel-release sudo sudo yum install -y chrony |
# 更換伺服器並啟動該服務
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cp /etc/chrony.conf /etc/chrony.conf.bak sed -i '/pool.ntp.org/a\server time.cloudflare.com prefer\nserver time.google.com prefer\nserver clock.fmt.he.net iburst\nserver clock.nyc.he.net iburst\nserver time.nist.gov iburst\nserver 0.amazon.pool.ntp.org iburst\nserver time.stdtime.gov.tw' /etc/chrony.conf # cat /etc/chrony.conf | grep server systemctl enable chronyd && systemctl start chronyd |
# 防火牆設定
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systemctl iptables stop iptables -A INPUT -p tcp --dport 123 -j ACCEPT iptables-save | tee /etc/sysconfig/iptables systemctl restart iptables |
# firewalld切換成下列指令
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firewall-cmd --permanent --add-service=ntp firewall-cmd --reload |
# 對時
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sudo chronyc -a makestep && timedatectl |
# 查看與ntp server的同步狀態與ntp server的時間差
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sudo chronyc sources -v && timedatectl |
# 顯示有關系統時間的資訊
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sudo chronyc tracking |
# 顯示同步源頭的資訊
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sudo chronyc sourcestats -v |
ref.