Re: [OSM-dev] Tile server and Nominatim setup @ Openstreetmap.org

[Andy Allan]

On 21 October 2015 at 15:39, Stadin, Benjamin
 wrote:

> Do you have some details how to accomplish installing the complete stack,
> close to how it works at openstreetmap.org?

The production servers are configured using Chef, and all the chef
cookbooks used are available at

https://github.com/openstreetmap/chef

So this will let you find out the actual configurations used! Of
course, the cookbooks are customised for the OSM production
environment so they aren't designed for easy re-use in other
situations, and in many cases it's tricky to figure out what they are
actually doing. But I just wanted to make sure everyone is aware that
the information is available if you are curious!

Thanks,
Andy

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Re: [OSM-dev] Tile server and Nominatim setup @ Openstreetmap.org

[Paul Norman]

On 10/21/2015 7:39 AM, Stadin, Benjamin wrote:

Hi list,

I’ve installed the rails port and imported a small map via osmosis. 
Next thing is to install a tile server, and change the default 
settings of the rails port to use it.


I’m interested in production configurations. There are several 
tutorials for installing Mapnik, but so far I found none that covers 
in detail the dependencies and configuration for installing a complete 
and scalable Openstreetmap stack on your own (rails port + tile 
service + minutely updates + Nominatim).


Do you have some details how to accomplish installing the complete 
stack, close to how it works at openstreetmap.org?


Your best bet might be to look at presentations by OpenHistoricalMap. 
They've done something similar, though I'm not sure exactly how much of 
the stack they have set up.


The two least documented parts of the stack may be the most difficult. 
These are:


- Planet dumps from https://github.com/zerebubuth/planet-dump-ng
- A replication feed from osmosis


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Re: [OSM-dev] Tile server

[malcolm stanley]

Hey Paul

Thanks for the response.
I've been reading a bunch of different tutorials and they all indicate what
you have mentioned, which is that Amazon is not an ideal environment for
running tile server- like workloads.

The challenge I've run into is that I have a requirement to set up a server
like that;
I don't have access to lots of capex to build a purpose-built server with,
and I don't have a data center to run it in.

Later, if I can get through a proof of concept stage, that may all come,
but for now I need a lower cost and immediately available prototyping
environment,
and my options seem limited to public clouds like AMZ, Azure, Heroku, and
similiar offerings.
I understand the performance will be problematic, but I see that
essentially as getting what I am able to pay for at this stage of my
project.

I'd be interested in your thoughts on two things:

a) given the constraints I have, is there a better 'pay as you go'
prototyping environment you are aware of that I could leverage?
b) either for that environment, or for AMZ if that is no better or worse
than any other available option, how would you set up a prototyping
environment capable of delivering query results against a world database
and serving tiles accordingly?

I'm sure there are a lot of people like me that need low cost prototyping
environments;
rather than saying 'Amazon is inappropriate', perhaps we need to
collectively develop a guide that says 'here is how you configure one'.
I'm happy to help with that by documenting my own experience if that is
useful.
The alternative seems to be a future filled with admonishment and that
seems like it would be less fun for all concerned.

interested in your thoughts...



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On Fri, Jun 21, 2013 at 7:31 PM, Paul Norman penor...@mac.com wrote:

 Amazon EBS is extremely slow. Adding more space won’t help. An EBS volume
 is about 100 iops, which is about the same as a single 7200 RPM drive.
 Within EBS your options for better performance are multiple EBS in RAID
 (complicated), provisioned iops EBS (expensive), ephemeral storage
 (reasonable speed, but lost on instance termination).

 ** **

 EC2 is designed for intermittent load compute-heavy tasks, and is not well
 suited for always on services which require disk speed like tileservers.**
 **

 ** **

 *From:* malcolm stanley [mailto:a.malcolm.stan...@gmail.com]
 *Sent:* Friday, June 21, 2013 7:24 AM
 *To:* Lynn W. Deffenbaugh (Mr)
 *Cc:* dev@openstreetmap.org
 *Subject:* Re: [OSM-dev] Tile server

 ** **

 I'm doing this on Amazon, so unsure of the physical architecture
 underneath it.

 but can easily add more space if I need to.

 ** **

 which it sounds like I might once I start rendering tiles. 

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Re: [OSM-dev] Tile server

[Jeffrey Ollie]

On Sat, Jun 22, 2013 at 11:58 AM, malcolm stanley
a.malcolm.stan...@gmail.com wrote:

 I'm sure there are a lot of people like me that need low cost prototyping
 environments;
 rather than saying 'Amazon is inappropriate', perhaps we need to
 collectively develop a guide that says 'here is how you configure one'.
 I'm happy to help with that by documenting my own experience if that is
 useful.

Rackspace and Digital Ocean offer SSD-based storage options.  Not sure
if it qualifies as low cost but it's available.

--
Jeff Ollie

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Re: [OSM-dev] Tile server

[malcolm stanley]

If you look here http://www.rackspace.com/cloud/block-storage/pricing/ you
will see pricing for Rackspace SSD is $0.70 cents per GB per month.
Its hard to compare apples to apples as they include IO in the price.
Having said that, it looks like at that price a 500G volume for a world
database would run about $350 per month.
a comparable Amazon volume would be far less @12.5 cents as opposed to
$0.70, but then you have to pay IO AND you can only use them on larger
instances, so you are going to cost up on that side.

Its almost like you need a case study comparing the offerings based on
specific usage profiles.

for instance, a dev instance on amazon is going to cost less (I **think**)
because you would have low IO and low disk costs.
as you ramp the IO up and start to add performance to AMZ, that would
probably change pretty quickly




_
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google.voice:  215.821.6252
Cell: 267.251.9479   - new
email: a.malcolm.stan...@gmail.com
twitter / linkedin: amstanley
Read my blog at http://soaringhorse.blogspot.com
_


On Sat, Jun 22, 2013 at 1:20 PM, Jeffrey Ollie j...@ocjtech.us wrote:

 On Sat, Jun 22, 2013 at 11:58 AM, malcolm stanley
 a.malcolm.stan...@gmail.com wrote:
 
  I'm sure there are a lot of people like me that need low cost prototyping
  environments;
  rather than saying 'Amazon is inappropriate', perhaps we need to
  collectively develop a guide that says 'here is how you configure one'.
  I'm happy to help with that by documenting my own experience if that is
  useful.

 Rackspace and Digital Ocean offer SSD-based storage options.  Not sure
 if it qualifies as low cost but it's available.

 --
 Jeff Ollie

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Re: [OSM-dev] Tile server

[malcolm stanley]

to get a ~500Gb volume on Digital Ocean you need to sign up for a $480 per
month server.
doesn't look like you can resize the volumes independently of processor and
other resources.

_
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google.voice:  215.821.6252
Cell: 267.251.9479   - new
email: a.malcolm.stan...@gmail.com
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On Sat, Jun 22, 2013 at 1:20 PM, Jeffrey Ollie j...@ocjtech.us wrote:

 On Sat, Jun 22, 2013 at 11:58 AM, malcolm stanley
 a.malcolm.stan...@gmail.com wrote:
 
  I'm sure there are a lot of people like me that need low cost prototyping
  environments;
  rather than saying 'Amazon is inappropriate', perhaps we need to
  collectively develop a guide that says 'here is how you configure one'.
  I'm happy to help with that by documenting my own experience if that is
  useful.

 Rackspace and Digital Ocean offer SSD-based storage options.  Not sure
 if it qualifies as low cost but it's available.

 --
 Jeff Ollie

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Re: [OSM-dev] Tile server

[Cartinus]

For testing/proof of concept most people start with something smaller
than a world database. E.g. a country or a state extract.

http://blog.geofabrik.de/?p=241

On 06/22/2013 11:19 PM, malcolm stanley wrote:
 If you look here http://www.rackspace.com/cloud/block-storage/pricing/ you
 will see pricing for Rackspace SSD is $0.70 cents per GB per month.
 Its hard to compare apples to apples as they include IO in the price.
 Having said that, it looks like at that price a 500G volume for a world
 database would run about $350 per month.
 a comparable Amazon volume would be far less @12.5 cents as opposed to
 $0.70, but then you have to pay IO AND you can only use them on larger
 instances, so you are going to cost up on that side.
 
 Its almost like you need a case study comparing the offerings based on
 specific usage profiles.
 
 for instance, a dev instance on amazon is going to cost less (I **think**)
 because you would have low IO and low disk costs.
 as you ramp the IO up and start to add performance to AMZ, that would
 probably change pretty quickly
 
 
 
 
 _
 malcolm stanley
 
 google.voice:  215.821.6252
 Cell: 267.251.9479   - new
 email: a.malcolm.stan...@gmail.com
 twitter / linkedin: amstanley
 Read my blog at http://soaringhorse.blogspot.com
 _
 
 
 On Sat, Jun 22, 2013 at 1:20 PM, Jeffrey Ollie j...@ocjtech.us wrote:
 
 On Sat, Jun 22, 2013 at 11:58 AM, malcolm stanley
 a.malcolm.stan...@gmail.com wrote:

 I'm sure there are a lot of people like me that need low cost prototyping
 environments;
 rather than saying 'Amazon is inappropriate', perhaps we need to
 collectively develop a guide that says 'here is how you configure one'.
 I'm happy to help with that by documenting my own experience if that is
 useful.

 Rackspace and Digital Ocean offer SSD-based storage options.  Not sure
 if it qualifies as low cost but it's available.

 --
 Jeff Ollie

 
 
 
 ___
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 dev@openstreetmap.org
 http://lists.openstreetmap.org/listinfo/dev
 

-- 
---
m.v.g.,
Cartinus

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Re: [OSM-dev] Tile server

[Paul Norman]

If you’re going to compare the SSD volumes to EBS, you need to compare it to 
provisioned iops volumes, which would be $400 a month for 4000 iops, and a 
minimum size of 400GB, for a total of $450/month. EC2 is more expensive for an 
osm2pgsql DB, which you’d want about 300GB currently and more in the future.



 

Just for comparison, Hetzner will rent you a 64GB RAM 6-core server with a 
600GB SSD for 210 €/month, 100 € setup, or 32GB RAM, 4-core server with 2x 
240GB SSD for 140 €/month, 150 € setup. OVH has a 64GB 4-core server with 2x 
300GB SSD for 170€/month with no setup. Of course, all of these options should 
have far faster IO than a 4k iops volume.

 

If you’re doing dev work the OVH option is cheaper than EC2 if you’d need more 
than about a week of instance time in a month.

 

The conclusion you can draw from all of this is that if you’re doing 
prototyping or dev work, use an extract, have enough RAM and tune your 
postgresql for your use case. 

 

If you’re doing benchmarking this does not apply, but that’s a special case 
where you really need to give careful consideration to the workload and 
specifications of the machineyou’re using.

 

From: malcolm stanley [mailto:a.malcolm.stan...@gmail.com] 
Sent: Saturday, June 22, 2013 2:20 PM
To: Jeffrey Ollie
Cc: Paul Norman; OSM-Dev Openstreetmap
Subject: Re: [OSM-dev] Tile server

 

If you look here http://www.rackspace.com/cloud/block-storage/pricing/ you will 
see pricing for Rackspace SSD is $0.70 cents per GB per month.

Its hard to compare apples to apples as they include IO in the price.

Having said that, it looks like at that price a 500G volume for a world 
database would run about $350 per month.

a comparable Amazon volume would be far less @12.5 cents as opposed to $0.70, 
but then you have to pay IO AND you can only use them on larger instances, so 
you are going to cost up on that side.

 

Its almost like you need a case study comparing the offerings based on specific 
usage profiles. 

 

for instance, a dev instance on amazon is going to cost less (I **think**) 
because you would have low IO and low disk costs.

as you ramp the IO up and start to add performance to AMZ, that would probably 
change pretty quickly

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Re: [OSM-dev] Tile server

[malcolm stanley]

Paul, thats really helpful data.
are there other examples like those for server rental that you can think of?

This is exactly the sort of thing that needs to be wiki'd somewhere so its
discoverable when you are looking for bootstrapping information.



_
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google.voice:  215.821.6252
Cell: 267.251.9479   - new
email: a.malcolm.stan...@gmail.com
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Read my blog at http://soaringhorse.blogspot.com
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On Sat, Jun 22, 2013 at 8:02 PM, Paul Norman penor...@mac.com wrote:

 If you’re going to compare the SSD volumes to EBS, you need to compare it
 to provisioned iops volumes, which would be $400 a month for 4000 iops, and
 a minimum size of 400GB, for a total of $450/month. EC2 is more expensive
 for an osm2pgsql DB, which you’d want about 300GB currently and more in the
 future.


 

 Just for comparison, Hetzner will rent you a 64GB RAM 6-core server with a
 600GB SSD for 210 €/month, 100 € setup, or 32GB RAM, 4-core server with
 2x 240GB SSD for 140 €/month, 150 € setup. OVH has a 64GB 4-core server
 with 2x 300GB SSD for 170€/month with no setup. Of course, all of these
 options should have far faster IO than a 4k iops volume.

 ** **

 If you’re doing dev work the OVH option is cheaper than EC2 if you’d need
 more than about a week of instance time in a month.

 ** **

 The conclusion you can draw from all of this is that if you’re doing
 prototyping or dev work, use an extract, have enough RAM and tune your
 postgresql for your use case. 

 ** **

 If you’re doing benchmarking this does not apply, but that’s a special
 case where you really need to give careful consideration to the workload
 and specifications of the machineyou’re using.

 ** **

 *From:* malcolm stanley [mailto:a.malcolm.stan...@gmail.com]
 *Sent:* Saturday, June 22, 2013 2:20 PM
 *To:* Jeffrey Ollie
 *Cc:* Paul Norman; OSM-Dev Openstreetmap

 *Subject:* Re: [OSM-dev] Tile server

 ** **

 If you look here http://www.rackspace.com/cloud/block-storage/pricing/you 
 will see pricing for Rackspace SSD is $0.70 cents per GB per month.
 

 Its hard to compare apples to apples as they include IO in the price.

 Having said that, it looks like at that price a 500G volume for a world
 database would run about $350 per month.

 a comparable Amazon volume would be far less @12.5 cents as opposed to
 $0.70, but then you have to pay IO AND you can only use them on larger
 instances, so you are going to cost up on that side.

 ** **

 Its almost like you need a case study comparing the offerings based on
 specific usage profiles. 

 ** **

 for instance, a dev instance on amazon is going to cost less (I **think**)
 because you would have low IO and low disk costs.

 as you ramp the IO up and start to add performance to AMZ, that would
 probably change pretty quickly

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Re: [OSM-dev] Tile server

[Peter Wendorff]

Am 21.06.2013 06:13, schrieb Kaur gill:
 Thank you for your help.
 
 Yesterday I was able to set the exact path for accessing the tiles.
 With that I got very small image of my map. When I tried to zoom it
 out, it disappears and again shows the pink square boxes.
 Is it the problem of tiles or something else?
Did you try again later (at least some minutes) to view the same area?
Is it still not showing tiles then?

Depending on your systems specs it may take really long to render a
tile, and if you didn't prerender anything, especially low-zoom tiles
may take longer than a HTTP Request will wait, so your browser get's a
timeout error and shows these pink squares therefore.

But:
1) you should see the corresponding render request be enqueued to the
mod_tiles render queue, and
2) if you come back later the tiles should be shown, as now the
corresponding meta tiles should be cashed on your disk.

regards
Peter

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Re: [OSM-dev] Tile server

[sly (sylvain letuffe)]

On vendredi 21 juin 2013, Lynn W. Deffenbaugh (Mr) wrote:
 18GB for the planet and my postgresql database is about 260GB after 
 importing the planet into it.  Add space for rendered tiles, and it's 
 pretty demanding.
 
 If you've only got a single magnetic spindle for the 500GB, you might 
 find it hard to keep up with the updates.  I ended up migrating from a 3 
 spindle magnetic RAID to a pair of SSDs, one for the rendering tables 
 and the other for the import tables.  I'm looking into which tables to 
 put on which to try to make both busy instead of just one when rendering.

You should consider a RAID0 array at OS level, that should help improve speed 
while still beeing simple software side.


-- 
sly, DWG member since 11/2012
Coordinateur du groupe [ga]
http://wiki.openstreetmap.org/wiki/User:Sletuffe

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Re: [OSM-dev] Tile server

[malcolm stanley]

I'm doing this on Amazon, so unsure of the physical architecture underneath
it.
but can easily add more space if I need to.

which it sounds like I might once I start rendering tiles.

Thanks for your help Lynn.

_
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google.voice:  215.821.6252
Cell: 267.251.9479   - new
email: a.malcolm.stan...@gmail.com
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Read my blog at http://soaringhorse.blogspot.com
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On Fri, Jun 21, 2013 at 12:33 AM, Lynn W. Deffenbaugh (Mr) 
ldeff...@homeside.to wrote:

 18GB for the planet and my postgresql database is about 260GB after
 importing the planet into it.  Add space for rendered tiles, and it's
 pretty demanding.

 If you've only got a single magnetic spindle for the 500GB, you might find
 it hard to keep up with the updates.  I ended up migrating from a 3 spindle
 magnetic RAID to a pair of SSDs, one for the rendering tables and the other
 for the import tables.  I'm looking into which tables to put on which to
 try to make both busy instead of just one when rendering.

 Lynn (D) - KJ4ERJ


 On 6/21/2013 12:19 AM, Kaur gill wrote:

 On Thu, Jun 20, 2013 at 8:42 PM, malcolm stanley
 a.malcolm.stan...@gmail.com wrote:

 out of curiosity, how much disk space are you consuming?
 I am setting up a tile server right now and about to ingest the planet
 file.
 I have 500 Gb of storage connected to the server: will that be enough, or
 will I run out of space during ingest?
 Any metrics on the size of a fully ingested system would be
 appreciated...


 The whole planet is at least 18GB when compressed. I think its enough.
 You can refer this link:
 http://switch2osm.org/serving-**tiles/manually-building-a-**
 tile-server-12-04/http://switch2osm.org/serving-tiles/manually-building-a-tile-server-12-04/
 .

 --
 Kamaljot Kaur
 Blog: http://kamal125130.wordpress.**com/http://kamal125130.wordpress.com/

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Re: [OSM-dev] Tile server

[Paul Norman]

Amazon EBS is extremely slow. Adding more space won't help. An EBS volume is
about 100 iops, which is about the same as a single 7200 RPM drive. Within
EBS your options for better performance are multiple EBS in RAID
(complicated), provisioned iops EBS (expensive), ephemeral storage
(reasonable speed, but lost on instance termination).

 

EC2 is designed for intermittent load compute-heavy tasks, and is not well
suited for always on services which require disk speed like tileservers.

 

From: malcolm stanley [mailto:a.malcolm.stan...@gmail.com] 
Sent: Friday, June 21, 2013 7:24 AM
To: Lynn W. Deffenbaugh (Mr)
Cc: dev@openstreetmap.org
Subject: Re: [OSM-dev] Tile server

 

I'm doing this on Amazon, so unsure of the physical architecture underneath
it.

but can easily add more space if I need to.

 

which it sounds like I might once I start rendering tiles. 

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Re: [OSM-dev] Tile server

[Stephan Knauss]

On 20.06.2013 07:03, Kaur gill wrote:

I have /var/lib/mod_tile/default/0/0/0/0/0.meta.
But I don't know how to access it, through which file I should try to access it.


Usually you'll use the apache module mod_tile.
It will handle path requests like /1/1/0.png and serve the matching tile 
from the metatile you already have.


more details here and in the wiki, read mod_tile.
http://switch2osm.org/serving-tiles/manually-building-a-tile-server/

Stephan


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Re: [OSM-dev] Tile server

[malcolm stanley]

out of curiosity, how much disk space are you consuming?
I am setting up a tile server right now and about to ingest the planet file.
I have 500 Gb of storage connected to the server: will that be enough, or
will I run out of space during ingest?
Any metrics on the size of a fully ingested system would be appreciated...

_
malcolm stanley

google.voice:  215.821.6252
Cell: 267.251.9479   - new
email: a.malcolm.stan...@gmail.com
twitter / linkedin: amstanley
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On Wed, Jun 19, 2013 at 12:49 PM, Kaur gill jasra...@gmail.com wrote:

  Hi all

 I am Kamaljot Kaur. I am from khanna.
 I am currently pursuing my Bachelors Degree in Computer Science and
 Engineering.
 My schooling is from Sacred Heart Convent School, Khanna.
 I am working on OpenStreetMap.

 I need a small help from you all. I manually built my own tile server
 by following the steps mentioned on:
 http://switch2osm.org/serving-tiles/manually-building-a-tile-server-12-04/
 .
 I followed it step by step and was successful in building Tile server.
 After doing so when I tried to access my locally stored tiles I came
 to know that I don't know the exact location of the locally stored
 tiles.
 I tried a lot to find that but nothing worked. Please suggest me
 something what to do? How I can find the location?
 Without knowing the location I will not be able to view my map.
 I will be very thankful to you all.

 --
 Kamaljot Kaur
 Blog: http://kamal125130.wordpress.com/

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Re: [OSM-dev] Tile server

[Kaur gill]

On Thu, Jun 20, 2013 at 12:22 PM, Stephan Knauss o...@stephans-server.de 
wrote:
 On 20.06.2013 07:03, Kaur gill wrote:


 Usually you'll use the apache module mod_tile.
 It will handle path requests like /1/1/0.png and serve the matching tile
 from the metatile you already have.

 more details here and in the wiki, read mod_tile.
 http://switch2osm.org/serving-tiles/manually-building-a-tile-server/

Thank you for your help.

Yesterday I was able to set the exact path for accessing the tiles.
With that I got very small image of my map. When I tried to zoom it
out, it disappears and again shows the pink square boxes.
Is it the problem of tiles or something else?


--
Kamaljot Kaur
Blog: http://kamal125130.wordpress.com/

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Re: [OSM-dev] Tile server

[Kaur gill]

On Thu, Jun 20, 2013 at 8:42 PM, malcolm stanley
a.malcolm.stan...@gmail.com wrote:
 out of curiosity, how much disk space are you consuming?
 I am setting up a tile server right now and about to ingest the planet file.
 I have 500 Gb of storage connected to the server: will that be enough, or
 will I run out of space during ingest?
 Any metrics on the size of a fully ingested system would be appreciated...


The whole planet is at least 18GB when compressed. I think its enough.
You can refer this link:
http://switch2osm.org/serving-tiles/manually-building-a-tile-server-12-04/.

--
Kamaljot Kaur
Blog: http://kamal125130.wordpress.com/

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Re: [OSM-dev] Tile server

[Lynn W. Deffenbaugh (Mr)]

18GB for the planet and my postgresql database is about 260GB after 
importing the planet into it.  Add space for rendered tiles, and it's 
pretty demanding.


If you've only got a single magnetic spindle for the 500GB, you might 
find it hard to keep up with the updates.  I ended up migrating from a 3 
spindle magnetic RAID to a pair of SSDs, one for the rendering tables 
and the other for the import tables.  I'm looking into which tables to 
put on which to try to make both busy instead of just one when rendering.


Lynn (D) - KJ4ERJ

On 6/21/2013 12:19 AM, Kaur gill wrote:

On Thu, Jun 20, 2013 at 8:42 PM, malcolm stanley
a.malcolm.stan...@gmail.com wrote:

out of curiosity, how much disk space are you consuming?
I am setting up a tile server right now and about to ingest the planet file.
I have 500 Gb of storage connected to the server: will that be enough, or
will I run out of space during ingest?
Any metrics on the size of a fully ingested system would be appreciated...


The whole planet is at least 18GB when compressed. I think its enough.
You can refer this link:
http://switch2osm.org/serving-tiles/manually-building-a-tile-server-12-04/.

--
Kamaljot Kaur
Blog: http://kamal125130.wordpress.com/

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Re: [OSM-dev] Tile server

[Kaur gill]

On Wed, Jun 19, 2013 at 10:32 PM, SomeoneElse
li...@mail.atownsend.org.uk wrote:
 Kaur gill wrote:
 You should see metatiles being generated below /var/lib/mod_tile/ , like for
 example:

 /var/lib/mod_tile/default/15/0/50/249/122/8.meta

 If you want to generate static tiles, you can do so by editing the settings
 in ~/src/mapnik-style/generate_tiles.py and running that.


I have /var/lib/mod_tile/default/0/0/0/0/0.meta.
But I don't know how to access it, through which file I should try to access it.
I don't have any file in /var/www/
I have slippymap.html file in /home/kamal/src/mod_tile. I think there
I need to set the path for accessing the tiles but don't know how to
do so. I tried a lot but didn't got anything.
When I run slippymap.html file on browser it shows pink square boxes.

Please help me.

And thank you very much for replying.

--
Kamaljot Kaur
Blog: http://kamal125130.wordpress.com/

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Re: [OSM-dev] Tile Server

[Thomas Davie]

On 31 May 2012, at 11:47, Anton Nel wrote:

 Hi Guys,
  
 There use to be a nice guide on how to install everything on Ubuntu 
 somewhere, but I can’t find it right now, does someone have the link for me?
 It’s the one for Python/Postgres/PostGis/Mapnik takes you through everything.

http://switch2osm.org/

Thanks

Tom Davie


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