Following this tutorial (Rails Port, OpenStreetMap website) https://github.com/openstreetmap/openstreetmap-website/blob/master/INSTALL.md , I successfully installed my local server and it is working. When I go to my server adress, the website just looks like OpenStreetMap's website.
Now I want to use in JOSM my local server instead of api.openstreetmap.org/api alt text But I have this error : Failed to retrieve a list of changesets from the OSM API server at 'http: //localhost'. The server responded with the return code 404 instead of 200. Please check the spelling and validate again