Ubuntu 20.04にChronyをインストールする

2021年9月13日

1.chronyのインストール
# apt -y install chrony

2.ファイルの設定

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EnlighterJS 3 Syntax Highlighter
# vim /etc/chrony/chrony.conf
修正前
pool ntp.ubuntu.com iburst maxsources 4
pool 0.ubuntu.pool.ntp.org iburst maxsources 1
pool 1.ubuntu.pool.ntp.org iburst maxsources 1
pool 2.ubuntu.pool.ntp.org iburst maxsources 2
修正後
#pool ntp.ubuntu.com iburst maxsources 4
#pool 0.ubuntu.pool.ntp.org iburst maxsources 1
#pool 1.ubuntu.pool.ntp.org iburst maxsources 1
#pool 2.ubuntu.pool.ntp.org iburst maxsources 2
pool ntp.nict.jp iburst
# vim /etc/chrony/chrony.conf 修正前 pool ntp.ubuntu.com iburst maxsources 4 pool 0.ubuntu.pool.ntp.org iburst maxsources 1 pool 1.ubuntu.pool.ntp.org iburst maxsources 1 pool 2.ubuntu.pool.ntp.org iburst maxsources 2 修正後 #pool ntp.ubuntu.com iburst maxsources 4 #pool 0.ubuntu.pool.ntp.org iburst maxsources 1 #pool 1.ubuntu.pool.ntp.org iburst maxsources 1 #pool 2.ubuntu.pool.ntp.org iburst maxsources 2 pool ntp.nict.jp iburst
# vim /etc/chrony/chrony.conf
修正前
pool ntp.ubuntu.com        iburst maxsources 4
pool 0.ubuntu.pool.ntp.org iburst maxsources 1
pool 1.ubuntu.pool.ntp.org iburst maxsources 1
pool 2.ubuntu.pool.ntp.org iburst maxsources 2

修正後
#pool ntp.ubuntu.com        iburst maxsources 4
#pool 0.ubuntu.pool.ntp.org iburst maxsources 1
#pool 1.ubuntu.pool.ntp.org iburst maxsources 1
#pool 2.ubuntu.pool.ntp.org iburst maxsources 2
pool ntp.nict.jp iburst

3.許可IPを追記
allow xxx.xx.xx.xx/24

4.動作確認
# chronyc sources

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210 Number of sources = 8
MS Name/IP address Stratum Poll Reach LastRx Last sample
===============================================================================
^- golem.canonical.com 2 9 377 382 +3939us[+3765us] +/- 133ms
^- pugot.canonical.com 2 9 377 450 -432us[ -600us] +/- 138ms
^- alphyn.canonical.com 2 8 377 62 -1620us[-1620us] +/- 136ms
^- chilipepper.canonical.com 2 9 377 447 +3842us[+3674us] +/- 144ms
^* tama.paina.net 2 9 377 65 +159us[ +56us] +/- 32ms
^- up2.com 2 9 377 253 -4555us[-4646us] +/- 168ms
^- fluffykins.positive-inte> 3 9 377 253 +5692us[+5601us] +/- 158ms
^- any.time.nl 2 8 377 327 -5220us[-5307us] +/- 67ms
210 Number of sources = 8 MS Name/IP address Stratum Poll Reach LastRx Last sample =============================================================================== ^- golem.canonical.com 2 9 377 382 +3939us[+3765us] +/- 133ms ^- pugot.canonical.com 2 9 377 450 -432us[ -600us] +/- 138ms ^- alphyn.canonical.com 2 8 377 62 -1620us[-1620us] +/- 136ms ^- chilipepper.canonical.com 2 9 377 447 +3842us[+3674us] +/- 144ms ^* tama.paina.net 2 9 377 65 +159us[ +56us] +/- 32ms ^- up2.com 2 9 377 253 -4555us[-4646us] +/- 168ms ^- fluffykins.positive-inte> 3 9 377 253 +5692us[+5601us] +/- 158ms ^- any.time.nl 2 8 377 327 -5220us[-5307us] +/- 67ms
210 Number of sources = 8
MS Name/IP address         Stratum Poll Reach LastRx Last sample
===============================================================================
^- golem.canonical.com           2   9   377   382  +3939us[+3765us] +/-  133ms
^- pugot.canonical.com           2   9   377   450   -432us[ -600us] +/-  138ms
^- alphyn.canonical.com          2   8   377    62  -1620us[-1620us] +/-  136ms
^- chilipepper.canonical.com     2   9   377   447  +3842us[+3674us] +/-  144ms
^* tama.paina.net                2   9   377    65   +159us[  +56us] +/-   32ms
^- up2.com                       2   9   377   253  -4555us[-4646us] +/-  168ms
^- fluffykins.positive-inte>     3   9   377   253  +5692us[+5601us] +/-  158ms
^- any.time.nl                   2   8   377   327  -5220us[-5307us] +/-   67ms

 

Ubuntu 20.04

Posted by arkgame