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[[File:Maps_@_PI@2x.png|thumb|Kartotherian internals focus]]
[[File:Maps_@_PI@2x.png|thumb|Kartotherian internals focus]]


The maps service consists of [https://github.com/kartotherian/kartotherian/blob/master/README.md Kartotherian] - a nodejs service to serve map tiles, [https://github.com/kartotherian/tilerator/blob/master/README.md Tilerator] - a non-public service to prepare vector tiles (data blobs) from OSM database into Cassandra storage, and TileratorUI - an interface to manage Tilerator jobs. There are four servers in the <code>maps</code> group: <code>maps-test200{1,2,3,4}.codfw.wmnet</code> that run Kartotherian (port 6533, NCPU instances), Tilerator (port 6534, half of NCPU instance), TileratorUI (port 6535, 1 instance). Also, there are four Varnish servers per datacenter in the <code>cache_maps</code> group.
The maps service consists of [https://github.com/kartotherian/kartotherian/blob/master/README.md Kartotherian] - a nodejs service to serve map tiles, [https://github.com/kartotherian/tilerator/blob/master/README.md Tilerator] - a non-public service to prepare vector tiles (data blobs) from OSM database into Cassandra storage, and TileratorUI - an interface to manage Tilerator jobs. There are 20 servers in the <code>maps</code> group: <code>maps20[01-10].codfw.wmnet</code> and <code>maps10[01-10].eqiad.wmnet</code> that run Kartotherian (port 6533, NCPU instances), Tilerator (port 6534, half of NCPU instance), TileratorUI (port 6535, 1 instance). Also, there are four Varnish servers per datacenter in the <code>cache_maps</code> group.


== The infrastructure ==
== The infrastructure ==

Revision as of 16:24, 16 December 2020

This page describes the technical aspects of deploying Maps service on Wikimedia Foundation infrastructure.

Intro

Maps service component diagram
Maps service deployment diagram
File:Maps @ PI@2x.png
Kartotherian internals focus

The maps service consists of Kartotherian - a nodejs service to serve map tiles, Tilerator - a non-public service to prepare vector tiles (data blobs) from OSM database into Cassandra storage, and TileratorUI - an interface to manage Tilerator jobs. There are 20 servers in the maps group: maps20[01-10].codfw.wmnet and maps10[01-10].eqiad.wmnet that run Kartotherian (port 6533, NCPU instances), Tilerator (port 6534, half of NCPU instance), TileratorUI (port 6535, 1 instance). Also, there are four Varnish servers per datacenter in the cache_maps group.

The infrastructure

Miscellaneous

Development processes

Puppetization and Automation

Prerequisites

  • passwords and postgres replication configuration is set in Ops private repo (root@palladium:~/private/hieradata/role/(codfw|eqiad)/maps/server.yaml)
  • other configuration in puppet/hieradata/role/(codfw|common|eqiad)/maps/*.yaml
  • cassandra::rack is defined in puppet/hieradata/hosts/maps*.yaml
  • the role::maps::master / role::maps::slave roles are associated to the maps nodes (site.pp)

Monitoring

Subpages