AWS Ubuntu NTP設定方法 » 履歴 » バージョン 5
バージョン 4 (田中 克典, 2020/08/20 06:01) → バージョン 5/8 (田中 克典, 2020/08/20 06:02)
h1. [[https://redmine.ait-partner.co.jp/projects/pub/wiki/Sample#AWS]]h1. AWS Ubuntu NTP設定方法
サービスの開始
<pre>
sudo /etc/init.d/chrony start
[ ok ] Starting chrony (via systemctl): chrony.service.
</pre>
時刻を同期させていることの確認
<pre>
chronyc sources -v
Amazon Time Sync ServiceのIPアドレス:169.254.169.123を使用していることを確認
210 Number of sources = 1
.-- Source mode '^' = server, '=' = peer, '#' = local clock.
/ .- Source state '*' = current synced, '+' = combined , '-' = not combined,
| / '?' = unreachable, 'x' = time may be in error, '~' = time too variable.
|| .- xxxx [ yyyy ] +/- zzzz
|| Reachability register (octal) -. | xxxx = adjusted offset,
|| Log2(Polling interval) --. | | yyyy = measured offset,
|| \ | | zzzz = estimated error.
|| | | \
MS Name/IP address Stratum Poll Reach LastRx Last sample
===============================================================================
^* 169.254.169.123 3 6 17 27 +1967ns[+5612ns] +/- 364us
</pre>
<pre>
時刻同期のメトリクスを確認
chronyc tracking
（例）
Reference ID : A9FEA97B (169.254.169.123)
Stratum : 4
Ref time (UTC) : Thu Aug 20 04:33:27 2020
System time : 0.000000004 seconds slow of NTP time
Last offset : +0.000003645 seconds
RMS offset : 0.000003645 seconds
Frequency : 0.704 ppm fast
Residual freq : -0.549 ppm
Skew : 0.020 ppm
Root delay : 0.000232039 seconds
Root dispersion : 0.000348835 seconds
Update interval : 2.0 seconds
Leap status : Normal
</pre>
<pre>
サービスの自動起動を有効化する
systemctl enable chrony
Synchronizing state of chrony.service with SysV service script with /lib/systemd/systemd-sysv-install.
Executing: /lib/systemd/systemd-sysv-install enable chrony
Created symlink /etc/systemd/system/chronyd.service → /lib/systemd/system/chrony.service.
Created symlink /etc/systemd/system/multi-user.target.wants/chrony.service → /lib/systemd/system/chrony.service.
</pre>
<pre>
サービス自動起動の設定を確認する
systemctl is-enabled chrony
enabled
</pre>
サービスの開始
<pre>
sudo /etc/init.d/chrony start
[ ok ] Starting chrony (via systemctl): chrony.service.
</pre>
時刻を同期させていることの確認
<pre>
chronyc sources -v
Amazon Time Sync ServiceのIPアドレス:169.254.169.123を使用していることを確認
210 Number of sources = 1
.-- Source mode '^' = server, '=' = peer, '#' = local clock.
/ .- Source state '*' = current synced, '+' = combined , '-' = not combined,
| / '?' = unreachable, 'x' = time may be in error, '~' = time too variable.
|| .- xxxx [ yyyy ] +/- zzzz
|| Reachability register (octal) -. | xxxx = adjusted offset,
|| Log2(Polling interval) --. | | yyyy = measured offset,
|| \ | | zzzz = estimated error.
|| | | \
MS Name/IP address Stratum Poll Reach LastRx Last sample
===============================================================================
^* 169.254.169.123 3 6 17 27 +1967ns[+5612ns] +/- 364us
</pre>
<pre>
時刻同期のメトリクスを確認
chronyc tracking
（例）
Reference ID : A9FEA97B (169.254.169.123)
Stratum : 4
Ref time (UTC) : Thu Aug 20 04:33:27 2020
System time : 0.000000004 seconds slow of NTP time
Last offset : +0.000003645 seconds
RMS offset : 0.000003645 seconds
Frequency : 0.704 ppm fast
Residual freq : -0.549 ppm
Skew : 0.020 ppm
Root delay : 0.000232039 seconds
Root dispersion : 0.000348835 seconds
Update interval : 2.0 seconds
Leap status : Normal
</pre>
<pre>
サービスの自動起動を有効化する
systemctl enable chrony
Synchronizing state of chrony.service with SysV service script with /lib/systemd/systemd-sysv-install.
Executing: /lib/systemd/systemd-sysv-install enable chrony
Created symlink /etc/systemd/system/chronyd.service → /lib/systemd/system/chrony.service.
Created symlink /etc/systemd/system/multi-user.target.wants/chrony.service → /lib/systemd/system/chrony.service.
</pre>
<pre>
サービス自動起動の設定を確認する
systemctl is-enabled chrony
enabled
</pre>