Project setup [c3voc]

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== Project setup

  * Create tracker project (you can also clone a matching project to have prefilled properties)
  * Import schedule.xml
  * Set all master tickets from staging to staged via mass-edit
  * Adjust project properties, recommendations: (full reference at the bottom of the page)
  * Compare project properties with previous instalment of the same event


==== optimal properties from current project ====

Replace `camp2023` with your chosen tracker project slug.

  Meta.Acronym                    camp2023
  Meta.Album                      Chaos Communication Camp 2023
  Meta.License                    Licensed to the public under http://creativecommons.org/licenses/by/4.0
  Meta.Year                       2023
  
  Processing.Auphonic.Enable      no
  Processing.BasePath             /video/
  Processing.MasterMe.Enable      yes
  Processing.Path.Intros          /video/intros/camp2023
  Processing.Path.Outro           /video/intros/camp2023/outro.ts
  
  Publishing.Upload.SkipSlaves    speedy,tweety,blade1,blade2,blade3,blade4
  Publishing.UploadTarget         releasing.c3voc.de:/video/encoded/camp2023/
  Publishing.Tags                 <additional tags>
  Publishing.Voctoweb.Enable      yes
  Publishing.Voctoweb.Path        /cdn.media.ccc.de/events/camp2023
  Publishing.Voctoweb.Slug        camp2023
  Publishing.Voctoweb.Thumbpath   /static.media.ccc.de/conferences/camp2023
  Publishing.YouTube.Category     27
  Publishing.YouTube.Enable       yes
  Publishing.YouTube.Playlists    <meep>
  Publishing.YouTube.Privacy      <one of: public, unlisted, private>
  Publishing.YouTube.Token        <meep>
  
  Record.Container                TS
  Record.EndPadding               300
  Record.Slides                   yes
  Record.StartPadding             300 


=== Worker Filter Examples


  EncodingProfile.IsMaster=no
  EncodingProfile.IsMaster=yes
  EncodingProfile.IsMaster=
  Fahrplan.Room=Servus.at Lab


Please note that the conditions in the "project to worker group" filter are currently always evaluated with logical OR. 

Specifying a property with an empty value, which is often done for `EncodingProfile.IsMaster`, will match if this property does not exist at all on a ticket. So for `EncodingProfile.IsMaster`, specifying an empty filter will match on recording tickets which never have this property.
== Pipeline setup during event

During event setup of the pipeline, you have to decide if you want leave the MPEG TS snippets only on the [[hardware:encoder|recording cubes]] or also rsync them to a central storage:


=== Simple: single-room setup (Variant 2)

{{drawio>c3tracker:setup-simple.png}}


This variant is only practical if you have only one room, or at least one release encoder (aka [[hardware:Minion]]) for each recording cube. 
When using this variant with multiple rooms in one Tracker project (like at JEV22), you also have to set room filters in the tracker worker queues.

For every worker:
* set `EncodingProfile.IsMaster = yes` to avoid encoding all sub formats
* (set room filters in tracker e.g. `Fahrplan.Room = Foobar`, but this cannot be used at the same times as the above, see the warning below)

For every recoding cube:
* start tracker worker: `sudo systemctl start crs-worker.target`

For each minion:
* mount filesystems from encoder cube: `sudo crs-mount <storage location>`
* start tracker scripts for encoding: `sudo systemctl start crs-encoding.service`


<panel type="danger" title="Attention">Since tracker filters are joined via OR and not AND, this setup cannot be extended to multiple rooms without hacks if you want to e.g. limit on-site encoding to master formats. Use the  `CRS_ROOM` filter in bundlewrap if you need both tracker filters and room-specific encoding workers.</panel>

=== centralised storage (rsync) (Variant 1)

{{drawio>c3tracker:setup-central-storage.png}}


The first variant is typically used for events with more than one room. For bigger events we use the dedicated [[hardware:event-storage|storage]] server in the event server rack, for smaller events a USB connected hard drive to one of the minions might be sufficient. Each recording cube exposes the files via rsyncd, which are pulled by an rsync process running inside a screen on the storage pc.

For each encoderX start rsync on the central storage: `sudo systemctl start rsync-from-encoder@encoderX.lan.c3voc.de`

Then, start tracker workers on storage: `sudo systemctl start crs-worker.target` (only needed if you don't use `storage.lan.c3voc.de` - worker scripts get started automatically)

==== Minion setup

To allow the encoding workers to do their job, they need to mount the storage first: `sudo crs-mount <storage location>`

After mounting, you can start the tracker encoding workers: `sudo systemctl start crs-encoding.service`

The minion VMs running inside our event colo case automatically mount `storage.lan.c3voc.de` via cifs and start their worker scripts. You usually do not need to touch them.
  
==== Cube as worker setup

At small events, when the talks are finished for today, you can use the recording cubes to encode master MP4 files. 

First: Stop voctocore.

The rest is very similar to above, but with different mounts so `/video/capture` is not hidden:


  sudo mount -t cifs -o uid=voc,password= //storage.lan.c3voc.de/fuse /video/fuse
  sudo mount -t cifs -o uid=voc,password= //storage.lan.c3voc.de/video/intros /video/intros
  sudo mount -t cifs -o uid=voc,password= //storage.lan.c3voc.de/tmp /video/tmp
  sudo mount -t cifs -o uid=voc,password= //storage.lan.c3voc.de/encoded /video/encoded

  

=== decentralised pipeline aka "even more samba" (Variant 3)

<panel type="danger" title="Attention">The "decentralized pipeline (Variant 3)" should not be used by inexperienced users. Use the information above to find out how to get this variant working, then adjust/improve the documentation here.</panel>

Similar to variant 2, but extended to work with multiple rooms. Instead of using rsync, recorded snippets remain on the encoding cubes and ''/video/fuse/$event/$room'' are exposed via samba to the minions, while the encoded and tmp files live on one "central" minion; all other minions mount ''/video/encoded'' and ''/video/tmp'' from the primary minion [reasoning: the tracker cannot guarantee that the machine which encoded a talk also does the postprocessing (upload) step, so all minions have to see the same files].

Tracker filters have to be set only for the recording cubes, minions do not require any filters (but on smaller events without many minions, a ''EncodingProfile.IsMaster=yes'' filter can be a good idea, so sub formats won't crowd out the queues — they can always be encoded off-site later).

On recording cubes: start the followin systemd units:
 * ''crs-recording-scheduler''
 * ''crs-mount4cut''
 * ''crs-cut-postprocessor''

On all minions, including the one acting as storage, do

  mkdir -p /video/fuse/$event/{$room1, $room2, ..}
  mount.cifs -o uid=voc,password= {//$encoder1.lan.c3voc.de,}/video/fuse/$event/$room1
  mount.cifs -o uid=voc,password= {//$encoder2.lan.c3voc.de,}/video/fuse/$event/$room2
  ...

On all minions except the one acting as storage, also mount:

  mount.cifs -o uid=voc,password= //$storage.lan.c3voc.de/encoded /video/encoded
  mount.cifs -o uid=voc,password= //$storage.lan.c3voc.de/tmp /video/tmp
  mount.cifs -o uid=voc,password= {//$storage.lan.c3voc.de,}/video/intros

Finally on all minions, including the one acting as storage, start the following systemd units:
 * ''crs-encoding''
 * ''crs-postencoding''
 * ''crs-postprocessing''

==== Old example with systemd units and case 1 and 5, which was used during jev22 in Munich:

{{drawio>c3tracker:setup-variant-3.png}}

optional: configure `10.73.0.2` (aka `storage.lan.c3voc.de`) on the master minion as secondary ip

on recording cubes, mount or copy the intros from their source – here `storage.lan.c3voc.de`

  sudo mount -t cifs -o password= {//storage.lan.c3voc.de,}/video/intros
  sudo systemctl start crs-recording-scheduler  # A
  sudo systemctl start crs-mount4cut            # B
  sudo systemctl start crs-cut-postprocessor    # C
  
  # check if everything is running as expected – you might have to disable/stop the other CRS workers D-F
  sudo systemctl status -n 0 crs-* 

on master minion (in this example `storage.lan.c3voc.de`)


  mkdir -p /video/fuse/jev22/{Ahlam,Bhavani}
  mount -t cifs -o password= {//encoder1.lan.c3voc.de,}/video/fuse/jev22/Ahlam 
  mount -t cifs -o password= {//encoder5.lan.c3voc.de,}/video/fuse/jev22/Bhavani
  
  sudo systemctl start crs-encoding             # D-encoding
  sudo systemctl start crs-postencoding         # E-postencoding-auphonic
  sudo systemctl start crs-postprocessing       # F-postprocessing-upload
  
  # check if everything is running as expected – you might have to disable/stop the other CRS workers A-C
  sudo systemctl status -n 0 crs-* 


//(ensure that samba is installed on this master minion aka storage)//


on other minions

  mkdir -p /video/fuse/jev22/{Ahlam,Bhavani}
  mount -t cifs -o uid=voc,password= {//encoder1.lan.c3voc.de,}/video/fuse/jev22/Ahlam 
  mount -t cifs -o uid=voc,password= {//encoder5.lan.c3voc.de,}/video/fuse/jev22/Bhavani
  mount -t cifs //storage.lan.c3voc.de/encoded /video/encoded
  mount -t cifs -o password= //storage.lan.c3voc.de/encoded /video/encoded
  mount -t cifs -o password= //storage.lan.c3voc.de/tmp /video/tmp
  mount -t cifs -o password= {//storage.lan.c3voc.de,}/video/intros
   
   

==== Old example with custom screenrc and case 5 and 6:

on recording cube, without intros either copy or mount the intros from their source  

  sudo mount -t cifs -o password= {//storage.lan.c3voc.de,}/video/intros
  cd /opt/crs/tools/tracker3.0/
  sudo ./start screenrc-pipeline # with steps A, B and C
 

on master minion (in this example minion5)

  mount -t cifs -o password= //encoder5.lan.c3voc.de/video/fuse/podstock2019/Aussenbuehne /video/fuse/podstock2019/Aussenbuehne
  mount -t cifs -o password= //encoder6.lan.c3voc.de/video/fuse/podstock2019/Innenbuehne /video/fuse/podstock2019/Innenbuehne
  mount -t cifs -o password= //encoder6.lan.c3voc.de/video/intros /video/intros
  cd /opt/crs/tools/tracker3.0/
  sudo ./start screenrc-pipeline # with steps D, E, F

//(ensure that samba is installed on this master minion)//


on other minions

  mount -t cifs -o password= {//encoder5.lan.c3voc.de,}/video/fuse/podstock2019/Aussenbuehne 
  mount -t cifs -o password= {//encoder6.lan.c3voc.de,}/video/fuse/podstock2019/Innenbuehne
  mount -t cifs //storage.lan.c3voc.de/encoded /video/encoded
  mount -t cifs -o password= //storage.lan.c3voc.de/encoded /video/encoded
  mount -t cifs -o password= //storage.lan.c3voc.de/tmp /video/tmp
  mount -t cifs -o password= {//storage.lan.c3voc.de,}/video/intros
  cd /opt/crs/tools/tracker3.0/
  sudo ./start screenrc-encoding-only # only step E