症状:Ubuntuでネットワークに接続できない
解決方法:時刻を合わせる
やり方:
・現状確認
mma@mma-B760-DS3H-DDR4:/etc$ timedatectl
- Local time: 木 2023-05-25 11:07:53 JST
- Universal time: 木 2023-05-25 02:07:53 UTC
- RTC time: 木 2023-05-25 02:07:53
- Time zone: Asia/Tokyo (JST, +0900)
System clock synchronized: no
- NTP service: active
- RTC in local TZ: no
mma@mma-B760-DS3H-DDR4:/etc$ sudo systemctl status systemd-timesyncd.service [sudo] password for mma: ● systemd-timesyncd.service - Network Time Synchronization
Loaded: loaded (/lib/systemd/system/systemd-timesyncd.service; enabled; ve> Active: active (running) since Thu 2023-05-25 11:00:24 JST; 8min ago
- Docs: man:systemd-timesyncd.service(8)
- Main PID: 603 (systemd-timesyn)
- Status: "Idle."
- Tasks: 2 (limit: 38237)
- CPU: 44ms
- └─603 /lib/systemd/systemd-timesyncd
- Status: "Idle."
5月 25 11:02:49 mma-B760-DS3H-DDR4 systemd-timesyncd[603]: Timed out waiting f> 5月 25 11:02:59 mma-B760-DS3H-DDR4 systemd-timesyncd[603]: Timed out waiting f> 5月 25 11:03:09 mma-B760-DS3H-DDR4 systemd-timesyncd[603]: Timed out waiting f> 5月 25 11:04:24 mma-B760-DS3H-DDR4 systemd-timesyncd[603]: Timed out waiting f> 5月 25 11:04:34 mma-B760-DS3H-DDR4 systemd-timesyncd[603]: Timed out waiting f> 5月 25 11:06:52 mma-B760-DS3H-DDR4 systemd-timesyncd[603]: Timed out waiting f> 5月 25 11:07:03 mma-B760-DS3H-DDR4 systemd-timesyncd[603]: Timed out waiting f> 5月 25 11:07:13 mma-B760-DS3H-DDR4 systemd-timesyncd[603]: Timed out waiting f> 5月 25 11:07:23 mma-B760-DS3H-DDR4 systemd-timesyncd[603]: Timed out waiting f> 5月 25 11:07:33 mma-B760-DS3H-DDR4 systemd-timesyncd[603]: Timed out waiting f>
lines 1-22/22 (END)...skipping...
・ntpの設定追加
mma@mma-B760-DS3H-DDR4:/etc$ sudo nano /etc/systemd/timesyncd.conf
-変更点
#NTP= → NTP=sunrise.mma.club.uec.ac.jp
・リスタート
mma@mma-B760-DS3H-DDR4:/etc$ sudo systemctl restart systemd-timesyncd.service
・最後に確認
mma@mma-B760-DS3H-DDR4:/etc$ sudo systemctl status systemd-timesyncd.service ● systemd-timesyncd.service - Network Time Synchronization
Loaded: loaded (/lib/systemd/system/systemd-timesyncd.service; enabled; ve> Active: active (running) since Thu 2023-05-25 11:15:33 JST; 17h left
- Docs: man:systemd-timesyncd.service(8)
- Main PID: 4698 (systemd-timesyn)
Status: "Initial synchronization to time server 192.168.1.254:123 (sunrise>
- Tasks: 2 (limit: 38237)
- CPU: 41ms
- └─4698 /lib/systemd/systemd-timesyncd
5月 25 11:15:33 mma-B760-DS3H-DDR4 systemd[1]: Starting Network Time Synchroni> 5月 25 11:15:33 mma-B760-DS3H-DDR4 systemd[1]: Started Network Time Synchroniz> 5月 24 17:15:38 mma-B760-DS3H-DDR4 systemd-timesyncd[4698]: Initial synchroniz>
終了