NTP time sync

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ListAttBBC  |  v6.18  |  2026-10-20  |  Andrew.human & Claude.ai  |  live 07:00:40

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00	chatlog_NTP_Dev_Clone.md	1.1 KB	2	ℹ️	⬇️
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01	NTP time sync and chatlog export.pdf  [native]  [pdf in chunks]	221.6 KB	0	ℹ️	⬇️
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NTP time sync

📝 Inline Markdownv4.6.0 · 2026-10-19Theme: Deep IndigoNo Theme (Plain)Pink & PurpleSlate TechDark CyanEmerald FreshWarm AmberCrimson RedMidnight BlueSolarized LightCyberpunk NeonCoffee BeanNord FrostDracula DarkAntique SepiaPine ForestMatrix Terminal

Chat log: setting the time on Dev and Clone via NTP

Date: October 19, 2026

Andrew:

i need to set the right time on DEv and Clone via NTP

Claude:

Run this as root on each of Dev and Clone:

service ntpd stop
ntpdate -u au.pool.ntp.org
hwclock --systohc
service ntpd start
chkconfig ntpd on

ntpdate steps the clock immediately, which ntpd alone won't do if the offset is large. hwclock --systohc writes the corrected time to the hardware clock, so it survives a reboot.

If ntpdate isn't found, install it with yum install ntp. On CentOS 6 that may need the vault repo, since the mirrors are gone. The same package provides ntpd.

Check afterwards with ntpq -p. A * in the first column means it has locked onto a server.

If the clocks are right but the timezone is wrong, fix that with ln -sf /usr/share/zoneinfo/Australia/Sydney /etc/localtime.

On VMs, a clock that keeps drifting often comes from the hypervisor's time sync fighting ntpd. If the time goes wrong again after a few hours, check the VM's time-sync setting on the host.

Andrew:

copy the chatlog to markdown