{"action":"created","issue":{"url":"https://api.github.com/repos/openstreetmap/mod_tile/issues/77","repository_url":"https://api.github.com/repos/openstreetmap/mod_tile","labels_url":"https://api.github.com/repos/openstreetmap/mod_tile/issues/77/labels{/name}","comments_url":"https://api.github.com/repos/openstreetmap/mod_tile/issues/77/comments","events_url":"https://api.github.com/repos/openstreetmap/mod_tile/issues/77/events","html_url":"https://github.com/openstreetmap/mod_tile/issues/77","id":35277748,"number":77,"title":"\"Failed to read cmd on fd\" errors since mod_tile update on 2nd June","user":{"login":"SomeoneElseOSM","id":5311740,"avatar_url":"https://avatars.githubusercontent.com/u/5311740?v=3","gravatar_id":"","url":"https://api.github.com/users/SomeoneElseOSM","html_url":"https://github.com/SomeoneElseOSM","followers_url":"https://api.github.com/users/SomeoneElseOSM/followers","following_url":"https://api.github.com/users/SomeoneElseOSM/following{/other_user}","gists_url":"https://api.github.com/users/SomeoneElseOSM/gists{/gist_id}","starred_url":"https://api.github.com/users/SomeoneElseOSM/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/SomeoneElseOSM/subscriptions","organizations_url":"https://api.github.com/users/SomeoneElseOSM/orgs","repos_url":"https://api.github.com/users/SomeoneElseOSM/repos","events_url":"https://api.github.com/users/SomeoneElseOSM/events{/privacy}","received_events_url":"https://api.github.com/users/SomeoneElseOSM/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":6,"created_at":"2014-06-09T11:32:09Z","updated_at":"2016-04-27T12:54:59Z","closed_at":null,"body":"I have a fairly standard Ubuntu 14.04 based map server, set up as per http://wiki.openstreetmap.org/wiki/User:SomeoneElse/Ubuntu_1404_tileserver .\r\n\r\nI installed it on 26th April, and everything worked as expected.  On 2nd June I updated mod_tile from github and started seeing \"Failed to read cmd on fd\" errors in syslog:\r\n\r\nJun  9 12:20:52 ubuntuvm38 renderd[21354]: DEBUG: Got incoming request with protocol version 2\r\nJun  9 12:20:52 ubuntuvm38 renderd[21354]: DEBUG: Got command RenderPrio fd(14) xml(default), z(18), x(130734), y(85209), mime(image/png), options()\r\nJun  9 12:20:55 ubuntuvm38 renderd[21354]: DEBUG: DONE TILE default 18 130728-130735 85208-85215 in 2.407 seconds\r\nJun  9 12:20:55 ubuntuvm38 renderd[21354]: DEBUG: Sending render cmd(3 default 18/130735/85209) with protocol version 2 to fd 8\r\nJun  9 12:20:55 ubuntuvm38 renderd[21354]: DEBUG: Failed to read cmd on fd 8\r\nJun  9 12:20:55 ubuntuvm38 renderd[21354]: DEBUG: Connection 0, fd 8 closed, now 5 left\r\n\r\nThis doesn't stop it working (all tiles are still being rendered as expected) but it does seem odd.  Other server updates between 26th April and 2nd June include Ubuntu apt-get updates, a database reload from a new PBF file, but no changes to osm2pgsql style or (presumably) database columns etc.\r\n\r\nhttp://forum.openstreetmap.org/viewtopic.php?id=25587\r\n\r\n(from May 23rd) looks like it might be a similar issue.\r\n"},"comment":{"url":"https://api.github.com/repos/openstreetmap/mod_tile/issues/comments/215072944","html_url":"https://github.com/openstreetmap/mod_tile/issues/77#issuecomment-215072944","issue_url":"https://api.github.com/repos/openstreetmap/mod_tile/issues/77","id":215072944,"user":{"login":"SomeoneElseOSM","id":5311740,"avatar_url":"https://avatars.githubusercontent.com/u/5311740?v=3","gravatar_id":"","url":"https://api.github.com/users/SomeoneElseOSM","html_url":"https://github.com/SomeoneElseOSM","followers_url":"https://api.github.com/users/SomeoneElseOSM/followers","following_url":"https://api.github.com/users/SomeoneElseOSM/following{/other_user}","gists_url":"https://api.github.com/users/SomeoneElseOSM/gists{/gist_id}","starred_url":"https://api.github.com/users/SomeoneElseOSM/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/SomeoneElseOSM/subscriptions","organizations_url":"https://api.github.com/users/SomeoneElseOSM/orgs","repos_url":"https://api.github.com/users/SomeoneElseOSM/repos","events_url":"https://api.github.com/users/SomeoneElseOSM/events{/privacy}","received_events_url":"https://api.github.com/users/SomeoneElseOSM/received_events","type":"User","site_admin":false},"created_at":"2016-04-27T12:54:59Z","updated_at":"2016-04-27T12:54:59Z","body":"@liaomeng I replied to @avirupd-egnaroinc over on the tile-serving list.  That's a better place than here for queries such as \"I can't get this to work\" (which in any case are unrelated to the issue here, which is that \"Failed to read cmd on fd\" messages are printed in a debug log, even when nothing is wrong).\r\n\r\nI'd suggest that you post over there explaining what you've tried and what doesn't work.  If you're unsure what information to provide try asking in the #osm or #osm-dev IRC channels on OFTC."}}