CalDav Personal and Command Binding + Synology NAS

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Hello All,

i’ve tried now for many hours in the past few days to get a long with the CalDav Binding in combination with my Synology NAS. I was struggeling with the setup of the *.cfg files and especially with the url adresses of the calendars. But finally i made it working and thought i could share my findings:

Starting with the caldavio.cfg

caldavio:UserCalendar:url=https://ip:5001/caldav/<USERNAME>/home/
caldavio:UserCalendar:username=<USERNAME>
caldavio:UserCalendar:password=<PASSWORD>
caldavio:UserCalendar:reloadInterval=60
caldavio:UserCalendar:preloadTime=44640
caldavio:UserCalendar:disableCertificateVerification=true

caldavio:Work:url=https://ip:5001/caldav/<USERNAME>/qaqmt/
caldavio:Work:username=<USERNAME>
caldavio:Work:password=<PASSWORD>
caldavio:Work:reloadInterval=60
caldavio:Work:preloadTime=44640
caldavio:Work:disableCertificateVerification=true

caldavio:Hobby:url=https://ip:5001/caldav/<USERNAME>/zduly/
caldavio:Hobby:username=<USERNAME>
caldavio:Hobby:password=<PASSWORD>
caldavio:Hobby:reloadInterval=60
caldavio:Hobby:preloadTime=44640
caldavio:Hobby:disableCertificateVerification=true

First, the name of the calender has to be specified after “caldavio:”. Second, the url of the calendar has to be given with the “Thunderbird” setting, which can be taken from the web ui of Synology Calender by clicking on the desired calender and then selecting “CalDav-Account” (CalDav-Konto) (see link below to synology website). Important note. The initial user calender has the ending “home”, the next ones do have a number of random letters. Additionally, the port which i had to use in a default Synology environment was 5001 (also given in the “Thunderbird” path).

If you then have a second calender, you have to duplicate your entry, modifying the name of the calender + the suffix random letters.

Next the caldavPersonal.cfg

caldavPersonal:usedCalendars=UserCalendar,Work,Hobby

Very simple, just the “caldavPersonal:” appended at the front.

The same is with caldavCommand.cfg

caldavCommand:readCalendars=Hobby

Also here it is very simple with just appending “caldavCommand:” at the front.

During my trials i had often the problem that the binding was not loading proper anymore. Thus i found information to clear the cache of the config files, which i did with the following commands

cd /srv/openhab2-userdata/config/org/openhab
rm -f caldav.*config
sudo systemctl restart openhab2.service

It is very important to only delet the *.config files and not the *.cfg files. The files are automatically created again from the *.cfg files while booting up. Other sources also mentioned to

sudo openhab-cli clean-cache
sudo systemctl restart openhab2.service

but i did not use this, just the upper commands.

Concluding for me it was the url + the clear of the config files which made the trick.

Hopefully i could help somebody else
Have fun and good night :wink:

Sources:
https://openhabforum.de/viewtopic.php?t=2768
https://www.synology.com/de-de/knowledgebase/DSM/tutorial/Collaboration/How_to_Sync_Synology_Calendar_with_CalDAV_Clients#t2
https://community.openhab.org/t/oh2-caldav-not-working/27085/2
but finally mainly with this
https://knx-user-forum.de/forum/supportforen/openhab/1343980-caldav-binding-mehrere-kalender

1 Like

@paglatz

I’ve done it this way, but how do I know if it works?
Here’s my data:

caldavio.cfg

caldavPersonal.cfg

caldavCommand.cfg

Hey West,

looked at your caldavio and it seems that the url is wrong. It should have something like:

caldavio:Muellkalender:url=https://192.168.178.1:5001/caldav/username/abcdef/

The file caldav command is not needed at all, as it is only to control OH2 via the calendar items (for what i understand)… I cant read your caldavPersonal.cfg, seems as if this is not a file.

Sorry for replying so late, but due to business situation i was not able to.

Thanks
Patrick