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Add FAQ entry about system clock synchronisation #278

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May 7, 2024
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Add FAQ entry about system clock synchronisation #278

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Add FAQ entry about system clock synchronisation
sydhds Jan 19, 2024
45a0bc4
Fix typo
sydhds May 7, 2024
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48 changes: 48 additions & 0 deletions docs/node/faq.mdx
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Expand Up @@ -187,3 +187,51 @@ To do this, edit (or create if absent) the file `massa-node/config/config.toml`
```

then restart your node.

### Bootstrapping and error message "client & server clocks differ too much"

The clock of your server is not synchronized.

On linux system using systemd, this can be checked using:

`timedatectl`

Check the line starting with 'System clock synchronized':

`
Local time: Wed 2018-06-13 12:38:51 UTC
Universal time: Wed 2018-06-13 12:38:51 UTC
RTC time: Wed 2018-06-13 12:38:51
Time zone: ETC/UTC (UTC, +0000)
System clock synchronized: no
systemd-timesyncd.service active: yes
RTC in local TZ: no
`

To fix this, edit the following file:

`
sudo nano /etc/systemd/timesyncd.conf
`

Edit the NTP Server detail (from https://www.ntppool.org/zone/@):

`
[Time]
NTP=0.ch.pool.ntp.org 1.ch.pool.ntp.org
FallbackNTP=0.north-america.pool.ntp.org 1.north-america.pool.ntp.org
`

Then:

`
sudo systemctl daemon-reload
sudo timedatectl set-ntp off
sudo timedatectl set-ntp on
`

and you can check it with:

`
timedatectl status
`
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