Thank you for replies.
@Warren Gill: yes, I was thinking about crontab but wanted to use built-in
solution. Of course crontab is good as backup solution.
@vince: you're right, I didn't think about it from this side. Just for
record for future seekers:
1. I logged as root ('sudo -i' from 'pi' account)
2. generated SSH keys ('ssh-keygen')
3. copied them to external server ('ssh-copy-id [email protected]
-p 222')
4. copied /home/pi/.ssh/config to /root/.ssh/config
5. changed owner of 'config' ('chown root:root /root/.ssh/config')
6. waited for next synchronization
7. smiled because everything worked as expected :)
czwartek, 20 lipca 2023 o 23:24:20 UTC+2 vince napisał(a):
> Unless you did something custom, weewx runs as root, not as user 'pi'.
>
> You need 'root' to be able to ssh into the remote system with the user+key
> you specified. Same procedure you did to get 'pi' to work, just do it
> after sudo(ing) to root so you set the 'root' account up similiarly. Two
> minute thing to do.
>
> On Thursday, July 20, 2023 at 1:06:54 PM UTC-7 Tomasz Lewicki wrote:
>
>> rsync: host key verification failed
>>
>> Dear Weewx users.
>>
>> I'm trying to send files generated by Weewx to external webserver (paid
>> hosting) with rsync. I'm familiar with rsync, ssh and Linux. Weewx is
>> running on Raspberry Pi as 'pi' user. Here are my configs:
>>
>> /home/pi/.ssh/config
>>
>> Host CF
>> # HostName external.domain.com <- here of course is real web address
>> HostName 10.20.30.40 <- here of course is real IP
>> Port 222
>> User acetone <- this is my username on remote webserver (hosting)
>>
>> /etc/weewx/weewx.conf
>>
>> (...)
>>
>> [[RSYNC]]
>> # rsync'ing to a webserver is treated as just another report
>> skin = Rsync
>>
>> # If you wish to use rsync, you must configure passwordless ssh
>> using
>> # public/private key authentication from the user account that
>> weewx
>> # runs to the user account on the remote machine where the files
>> # will be copied.
>> #
>> # If you wish to use rsync, set "enable" to "true", then
>> # fill out server, user, and path.
>> # The server should appear in your .ssh/config file.
>> # The user is the username used in the identity file.
>> # The path is the destination directory, such as
>> /var/www/html/weather.
>> # Be sure that the user has write permissions on the destination!
>> enable = true
>> server = external.domain.com
>> port = 222
>> user = acetone
>> path = domains/external.domain.com/private_html/meteo/
>>
>> # To upload files from something other than what HTML_ROOT is set
>> # to above, specify a different HTML_ROOT here.
>> #HTML_ROOT = /var/www/html/weewx
>>
>> # Rsync can be configured to remove files from the remote server
>> if
>> # they don't exist under HTML_ROOT locally. USE WITH CAUTION: if
>> you
>> # make a mistake in the remote path, you could could
>> unintentionally
>> # cause unrelated files to be deleted. Set to 1 to enable remote
>> file
>> # deletion, zero to allow files to accumulate remotely.
>> delete = 0
>>
>> (...)
>>
>> I can log in to external server with ssh (passwordless) with command:
>>
>> $ ssh -p 222 [email protected]
>>
>> or just
>>
>> $ ssh CF <- this is host from .ssh/config
>>
>> I got error message from weewx:
>>
>> Jul 20 21:36:04 WeewxFR24 weewx[28079] DEBUG weeutil.rsyncupload:
>> rsyncupload: cmd: [['rsync', '--archive', '--stats', '-e', 'ssh -p 222',
>> '/var/www/html/weewx/', '[email protected]:~/domains/
>> external.domain.com/private_html/meteo']]
>> Jul 20 21:36:04 WeewxFR24 weewx[28079] ERROR weeutil.rsyncupload: rsync
>> reported errors. Original command: ['rsync', '--archive', '--stats', '-e',
>> 'ssh -p 222', '/var/www/html/weewx/', '[email protected]:~/domains/
>> external.domain.com/private_html/meteo']
>> Jul 20 21:36:04 WeewxFR24 weewx[28079] ERROR weeutil.rsyncupload: ****
>> Host key verification failed.
>> Jul 20 21:36:04 WeewxFR24 weewx[28079] ERROR weeutil.rsyncupload: ****
>> rsync: connection unexpectedly closed (0 bytes received so far) [sender]
>> Jul 20 21:36:04 WeewxFR24 weewx[28079] ERROR weeutil.rsyncupload: ****
>> rsync error: unexplained error (code 255) at io.c(235) [sender=3.1.3]
>>
>> I can send single file or whole directory with this command applied
>> directly from CLI:
>>
>> $ rsync --archive --stats -e 'ssh external.domain.com -p 222 -l acetone'
>> /var/www/html/weewx/ CF:domains/external.domain.com/private_html/meteo/
>>
>> I can also send files with simpler command (no additional options for -e
>> ssh because they are in .ssh/config):
>>
>> $ rsync --archive --stats -e ssh /var/www/html/weewx/ CF:domains/
>> external.domain.com/private_html/meteo/
>>
>> But *not* with:
>>
>> rsync --archive --stats -e ssh /var/www/html/weewx/
>> [email protected]:domains/external.domain.com/private_html/meteo
>>
>> And *not* with:
>>
>> rsync --archive --stats -e ssh /var/www/html/weewx/
>> external.domain.com:domains/external.domain.com/private_html/meteo
>>
>> As you can see, if .ssh/config is properly filled with data, it is much
>> simpler to 'do' rsync. But why it works when executed manually but not from
>> inside Weewx? Keys are valid if I can log in without password from CLI.
>> Maybe you could do [[RSYNC]] option more flexible and use .ssh/config?
>>
>
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