[Tile-serving] Recommended OSM update method?

[Lynn W. Deffenbaugh (Mr)]

I'm really not looking to invent new tools, just wondering which of the 
two documented approaches is the current best practice.

I'm quite content with the tool pulling the daily changes together for 
application and running multiple times to catch up with the month.  
Especially if I can manage to streamline some other processes to get it 
down to weekly updates instead of monthly.

But thank for the response and suggestion.

Lynn (D)


On 4/15/2022 5:24 PM, Imre Samu wrote:
> > "update in batches approximately monthly"
>
> in theory:  you can generate an osm change file from 2 osm monthly 
> planet files [ https://planet.openstreetmap.org/pbf/ ]
>
> example:
> first import      : planet-220307.osm.pbf   ( in the database )
> next monthly batch: planet-220404.osm.pbf   ( planned import. )
>
> And using 
> https://docs.osmcode.org/osmium/latest/osmium-derive-changes.html
> you can create OSM change files from the two OSM monthly planet files.
>
> osmium derive-changes planet-220307.osm.pbf planet-220404.osm.pbf -o 
> *planet-diff-220307-220404.osc.bz2*
>
> in theory,  the "planet-diff_220307_220404.osc.bz2" change file is 
> smaller than the sum of ( daily changes files )
>
> disclaimer:  in theory == not tested in real life.
>
> regards,
>   Imre
>
>
>
> Lynn W. Deffenbaugh (Mr) <ldeffenb at homeside.to> ezt írta (időpont: 
> 2022. ápr. 14., Cs, 21:06):
>
>     Greetings fellow tile servers,
>
>     I've just about finished (re)setting up my planet-wide tile server
>     for
>     the umpteenth time and was wondering what is the current
>     recommendation
>     for keeping the OSM database current. There are two different
>     approaches
>     that I've found documented, and I've used both of them in the
>     past.  But
>     for this newest server, I'd like to follow the best practice
>     recommended
>     by the community.
>
>     Using mod_tile's openstreetmap-tiles-update-expire from
>
>     https://switch2osm.org/serving-tiles/updating-as-people-edit/
>
>     or use osm2pgsql's osm2pgsql-replication from
>
>     https://osm2pgsql.org/doc/manual.html#updating-an-existing-database
>
>     For a bit of background, I don't need minutely updates, but update in
>     batches approximately monthly using the daily planetary diffs. After
>     updating, I re-render all existing tiles that have been affected
>     by the
>     updates (expired) and then snapshot the end resulting individual PNGs
>     (extracted from the metatiles directly) to another storage platform.
>
>     Any/all comments are welcome.
>
>     Lynn (D)
>
>
>
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