Differences

This shows you the differences between two versions of the page.

--- owncloud [15.03.2015 09:47] – Pascal Suter
+++ owncloud [16.07.2021 00:30] (current) – [synchronize external caldav and carddav sources] Pascal Suter
@@ Line 18: / Line 18: @@
 ===== php-apcu ====
 there seem to be some issues with the version of php-apcu that ubuntu 14.04 is currently using. owncloud 8 makes heavy use of it and therefore crashes about every hour or so when copying files because of that. the only thing that helps is to restart apache. a fix for this will soon be in the offical owncloud installation as they have added a version check and will only use php-apcu in versions they consider stable. until then, the easiest fix is to simply remove it and when you install new stuff, make sure it's not installed again on your system. this is only a temporary workaround until the version check is in their debian package
 ===== davfs2 mounts =====
@@ Line 58: / Line 59: @@
 now i simply use ''https://owncloud.mydomain.com/owncloud/remote.php/webdav'' as my server's url and it all works :)
+===== Windows WebDAV Mounts =====
+The owncloud client for windows syncs your owncloud files to your local harddisk. however, you might not want to sync everything as your notebook might not have enough space on its harddisk to keep all your files and files that where shared with you. If you still want the comfort of accessing files as if they where stored locally, you need to mount them as a webdav network share.
+there is a webdav client in windows but it is totally messed up:
+- it "sometimes" does not support ssl
+- it does not support basic auth - can be fixed with a registry hack
+- it might still have connection issues despite the registry hack, in that case you need to install a hotfix
+- even after that i could not connect
+- according to severeal other users it also has issues with large files
+that's why i've decided to follow the suggestion in the owncloud documentation and not use the native client. instead i found a tool called [[http://www.netdrive.net/|Net Drive]] that connects to all kinds of file sharing protocols and services and maps it as a network drive. it comes with a 30 day trial and seems to even be free after that with limited functionality. however, if you only need it to mount your owncloud share, the free version should do, as one of the limitations is that you can only use one share. the second limitation is, that it won't auto connect.. that, for me, is a reason to spend the 40$ once i am conviced the tools works. testing it now.
 ===== Fix Gallery (Switch to Gallery Plus) =====
@@ Line 74: / Line 87: @@
 Now go to your ''owncloud/apps/'' directory and get the latest version from the git repo:
   git clone -b stable8 https://github.com/interfasys/galleryplus.git
+change file owner to www-data (so that the updater app will be happy)
+  chown -R www-data.www-data galleryplus
 To **update** later on, use:
   git pull --rebase origin stable8
+you might need to run the chown from above again.. if you don't the updater app will probably tell you nex time you run an update :)
+now to massively improve the performance, you need to apply those two patches at the description on the github page .. on my installation with OC 8.0.2 the second patch failed and i had to manually apply it.. now this really improves performance once you return to a previously loaded gallery page as it finally caches pictures!
+===== JavaScript and CSS Asset Management =====
+probably not so important if you don't have too much traffic on your server.. however i did it anyway :)
+[[https://doc.owncloud.org/server/8.0/admin_manual/configuration_server/js_css_asset_management_configuration.html|see the documentation]]
+===== OCR for PDF files using ABBYY Fine Reader Corporate =====
+**Note** you will need the corporate edition for this as this solution here is using hot folders which is only available in the corporate edition.
+**Note** this is a work in progress.. i am not done yet with this setup!
+I am seting up a [[windows vm in KVM on headless ubuntu server]] to run abby fine reader on my owncloud server.
+i created a user "ocr" on owncloud that i used on my server to mount this users folder through davfs and then share it to my windows machine through samba. i then shared a folder that i will use as hotfolder with the user "ocr" and configured ABBY Fine Reader Hot Folders to scan this folder. i then created a second folder called "Originals" and a third called "Done"
+The idea is: the scanner creates pdf's and saves them into the hot folder. on my HP MFP i can choose to scan to a samba share and i can set the basename for the pdf it generates.. like this i will have a way to later identify where to put the OCR'd file through a bash or php script running as a cron job on my owncloud server..
+**Note** if you want ownclouds serch_lucene app to be able to index the pdf afterwards, use **PDF/A** as output format. files will be larger then with their other PDF format (actually about twice the size) but unfortunately search_lucene can't read those other pdf's.
+one thing needs to be taken into account here: if finereader encounters any errors while saving the parsed file, it will just not save the output and move the input file to "originals"..
+here is a one-liner which i might need to use in order to figure out which files where skipped when parsing, so i can copy them back to the hot folder to try again..
+  diff <(cd /mnt/owncloud/OCR/Done; find *) <(cd /mnt/owncloud/OCR/Originals; find *)
+===== synchronize external caldav and carddav sources =====
+**UPDATE** I have moved away from python virtualenv as it broke vdirsyncer on almost every os update. I now run vdirsyncer in a docker container based on [[https://github.com/kaergel/docker-vdirsyncer]]. Basically copy the tempalte for the ''docker-compose.yml'' file and adjust to your needs. the ''config'' volume is a single file, so if you have multiple calendars to sync, put them all in one file and then pass this file as ''/config'' volume. I also added a directory which is mounted as volume to ''/status'' and used ''/status'' in the ''general'' section of my config file for the status directory. this seems to work fine.
+**caution** this has only been done one-way, so that an external calender which is only changed externally gets regularly synced to owncloud. i haven't tired this in a two way mode.
+prior to owncloud9 there was a sync script which did exactly that. unfortunately it no longer works with oc9 and the developer has posted that he won't fix it, so we need a new solution.
+currently i am using [[https://vdirsyncer.readthedocs.org|vdirsyncer]]. to install in ubuntu 16.04 i did this:
+  apt-get install libxml2 libxml2-dev libxslt libxslt-dev zlib1g python python-virtualenv python-pip
+  pip install pipsi
+  pipsi --home /opt/owncloud/ install --python python3 vdirsyncer
+  mkdir /opt/owncloud/vdirsyncer/status
+  chmod 777 /opt/owncloud/vdirsyncer/status
+now it's time to configure your vdirsyncer.. in my case i wanted to sync a html read-only source (ical format) to owncloud. here is my config file:
+<code>
+[pair photokiste]
+a = "photokiste_crm"
+b = "photokiste_owncloud"
+collections = null
+conflict_resolution = "a wins"
+[storage photokiste_crm]
+type = "http"
+url = "https://www.source-server.com/ical.ics"
+[storage photokiste_owncloud]
+type = "caldav"
+url = "https://my.owncloud.server/remote.php/dav/calendars/username/calenarname"
+username = "myuser"
+password = "mysecret"
+</code>
+the owncloud calendar name can be viewed by hovering over the calendar. it will appear as mouse pointer tooltip.
+one thing on the ical format.. i used a library called ''PHP iCalWriter'' which i generated the ical source file with. as it turns out, PHP iCalWriter writes an different DTSTART and DTEND field for whole-day-events than what owncloud accepts. i have no idea who's write and who's wrong, but since i PHP iCalWriter is open source and it is already quite an old version i am using i decided to simply modify it. make sure, that your ical file contians a DTSTART and DTEND that look like this for whole-day-events (that is, events where the start and end date does not contain a time):
+  DTSTART;VALUE=DATE:20160903
+and a line like this for date + time start and end dates:
+  DTSTART:19701025T030000
+(PHP iCalWriter never added the ;VALUE=DATE: portion).
+this might be an onwcloud problem, as owncloud exports the "wrongly" specified events but it does not show them on the web-interface.. so maybe the web ui is just messing this up..
+once the config file is written, vdirsyncer needs to be run to initialize the account. as the user who will run vdirsyncer later on run this command:
+  VDIRSYNCER_CONFIG=/opt/owncloud/photokiste.conf /opt/owncloud/vdirsyncer/bin/vdirsyncer discover photokiste
+now vdirsyncer can be run through cron or manually like this:
+  VDIRSYNCER_CONFIG=/opt/owncloud/photokiste.conf /opt/owncloud/vdirsyncer/bin/vdirsyncer sync
+that's it :) .. theoretically vdirsyncer should also support two way sync, but i haven't tried that..  however they seem confident in their solution so it might be worth a try even for two-way syncing :)
+==== Update Vdirsyncer ====
+you can run updates using pipsi as well:
+  pipsi --home /opt/owncloud/ upgrade
+==== fix vdirsyncer after OS upgrade ====
+you might just need to re-install vdirsyncer after a os upgrade because the python version behind the virtualenv changed and is no longer compatible with the environment. in that case just rename the ''/opt/owncloud/vdirsyncer'' directory and start from scratch as listed above. Make sure you keep your configs!