Good afternoon dear all.

I definitely need your help because I am new to Apache technologies and renderd and do not know how to overcome current problem.

Could you be so kind to inspect my code and assist me to find the solution. I will greatly appreciate that.

I am following stages written in a manual: switch2osm_16-04-2-lts

But on a stage of "Running renderd for the first time" I got problems. When I execute next command sudo -u taras renderd -f -c /usr/local/etc/renderd.conf I received next reply in my Terminal: renderd[24791]: Rendering daemon started renderd[24791]: Initiating reqyest_queue renderd[24791]: Parsing section renderd renderd[24791]: Parsing render section 0 renderd[24791]: Parsing section mapnik renderd[24791]: Parsing section ajt renderd[24791]: config renderd: unix socketname=/var/run/renderd/renderd.sock renderd[24791]: config renderd: num_threads=2 renderd[24791]: config renderd: num_slaves=0 renderd[24791]: config renderd: tile_dir=/var/lib/mod_tile renderd[24791]: config renderd: stats_file=/var/run/renderd/renderd.stats renderd[24791]: config mapnik: plugins_dir=/usr/lib/mapnik/3.0/input renderd[24791]: config mapnik: font_dir=/usr/share/fonts/truetype renderd[24791]: config mapnik: font_dir_recurse=1 renderd[24791]: config renderd(0): Active renderd[24791]: config renderd(0): unix socketname=/var/run/renderd/renderd.sock renderd[24791]: config renderd(0): num_threads=2 renderd[24791]: config renderd(0): tile_dir=/var/lib/mod_tile renderd[24791]: config renderd(0): stats_file=/var/run/renderd/renderd.stats renderd[24791]: config map 0: name(ajt) file(/home/taras/Documents/projects/luxembourg/src/openstreetmap-carto/mapnik.xml) uri(/hot/) htcp() host(localhost) renderd[24791]: Initialising unix server socket on /var/run/renderd/renderd.sock renderd[24791]: Created server socket 5 renderd[24791]: Renderd is using mapnik version 2.2.0 renderd[24791]: DEBUG: Loading font: /usr/share/fonts/truetype/lohit-punjabi/Lohit-Punjabi.ttf ... (some very similar code with no errors) renderd[24791]: DEBUG: Loading font: /usr/share/fonts/truetype/tlwg/TlwgTypewriter-Bold.ttf renderd[24791]: DEBUG: Loading font: /usr/share/fonts/truetype/tlwg/Purisa.ttf renderd[24791]: DEBUG: Loading font: /usr/share/fonts/truetype/olga/GFSOlga.otf Running in foreground mode... renderd[24791]: Starting stats thread debug: init_storage_backend: initialising file storage backend at: /var/lib/mod_tile debug: init_storage_backend: initialising file storage backend at: /var/lib/mod_tile renderd[24791]: Loading parameterization function for renderd[24791]: Loading parameterization function for **Segmentation fault**

What does it mean Segmentation fault and what should I do?

Also, when I open my browser http://myIP/mod_tile/0/0/0.png I got next reply on the black background: The image “http://myIP/mod_tile/0/0/0.png” cannot be displayed, because it contains errors. Thank you fellows.

After execution of the next code: sudo -u taras gdb -batch -ex run -ex bt --args renderd -f -c /usr/local/etc/renderd.conf I received a long reply from a system, where 12 issues are indicated: ``` [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1". renderd[15977]: Rendering daemon started renderd[15977]: Initiating reqyest_queue renderd[15977]: Parsing section renderd renderd[15977]: Parsing render section 0 renderd[15977]: Parsing section mapnik renderd[15977]: Parsing section ajt renderd[15977]: config renderd: unix socketname=/var/run/renderd/renderd.sock renderd[15977]: config renderd: num_threads=4 renderd[15977]: config renderd: num_slaves=0 renderd[15977]: config renderd: tile_dir=/var/lib/mod_tile renderd[15977]: config renderd: stats_file=/var/run/renderd/renderd.stats renderd[15977]: config mapnik: plugins_dir=/usr/lib/mapnik/3.0/input renderd[15977]: config mapnik: font_dir=/usr/share/fonts/truetype renderd[15977]: config mapnik: font_dir_recurse=1 renderd[15977]: config renderd(0): Active renderd[15977]: config renderd(0): unix socketname=/var/run/renderd/renderd.sock renderd[15977]: config renderd(0): num_threads=4 renderd[15977]: config renderd(0): tile_dir=/var/lib/mod_tile renderd[15977]: config renderd(0): stats_file=/var/run/renderd/renderd.stats renderd[15977]: config map 0: name(ajt) file(/home/taras/Documents/projects/luxembourg/src/openstreetmap-carto/mapnik.xml) uri(/hot/) htcp() host(localhost) renderd[15977]: Initialising unix server socket on /var/run/renderd/renderd.sock renderd[15977]: Created server socket 5 renderd[15977]: Renderd is using mapnik version 2.2.0 renderd[15977]: DEBUG: Loading font: /usr/share/fonts/truetype/lohit-punjabi/Lohit-Punjabi.ttf renderd[15977]: DEBUG: Loading font: /usr/share/fonts/truetype/didot-classic/GFSDidotClassic.otf renderd[15977]: DEBUG: Loading font: /usr/share/fonts/truetype/ebgaramond/EBGaramond12-Italic.ttf renderd[15977]: DEBUG: Loading font: /usr/share/fonts/truetype/ebgaramond/EBGaramond-InitialsF2.ttf renderd[15977]: DEBUG: Loading font: /usr/share/fonts/truetype/ebgaramond/EBGaramond-Initials.ttf renderd[15977]: DEBUG: Loading font: /usr/share/fonts/truetype/ebgaramond/EBGaramond08-Regular.ttf renderd[15977]: DEBUG: Loading font: /usr/share/fonts/truetype/ebgaramond/EBGaramond08-SC.ttf renderd[15977]: DEBUG: Loading font: /usr/share/fonts/truetype/ebgaramond/EBGaramond-InitialsF1.ttf renderd[15977]: DEBUG: Loading font: /usr/share/fonts/truetype/ebgaramond/EBGaramond08-Italic.ttf renderd[15977]: DEBUG: Loading font: /usr/share/fonts/truetype/ebgaramond/EBGaramond12-Regular.ttf renderd[15977]: DEBUG: Loading font: /usr/share/fonts/truetype/adf/GilliusADF-Regular.otf renderd[15977]: DEBUG: Loading font: /usr/share/fonts/truetype/adf/AccanthisADFStdNo3-Italic.otf renderd[15977]: DEBUG: Loading font: /usr/share/fonts/truetype/adf/GilliusADFNo2-Bold.otf renderd[15977]: DEBUG: Loading font: /usr/share/fonts/truetype/adf/AccanthisADFStdNo2-Bold.otf renderd[15977]: DEBUG: Loading font: /usr/share/fonts/truetype/adf/AccanthisADFStdNo3-BoldItalic.otf renderd[15977]: DEBUG: Loading font: /usr/share/fonts/truetype/adf/AccanthisADFStd-Regular.otf renderd[15977]: DEBUG: Loading font: /usr/share/fonts/truetype/adf/GilliusADFNo2Cd-Italic.otf renderd[15977]: DEBUG: Loading font: /usr/share/fonts/truetype/adf/UniversalisADFStd-BoldOblique.otf (...everything abount fonts..I skip this long part) Running in foreground mode... [New Thread 0x7fffdd164700 (LWP 15981)] renderd[15977]: Starting stats thread [New Thread 0x7fffdc963700 (LWP 15982)] debug: init_storage_backend: initialising file storage backend at: /var/lib/mod_tile renderd[15977]: Loading parameterization function for [New Thread 0x7fffd7fff700 (LWP 15983)] debug: init_storage_backend: initialising file storage backend at: /var/lib/mod_tile renderd[15977]: Loading parameterization function for [New Thread 0x7fffd77fe700 (LWP 15984)] debug: init_storage_backend: initialising file storage backend at: /var/lib/mod_tile renderd[15977]: Loading parameterization function for [New Thread 0x7fffd6ffd700 (LWP 15985)] debug: init_storage_backend: initialising file storage backend at: /var/lib/mod_tile renderd[15977]: Loading parameterization function for

Thread 3 "renderd" received signal SIGSEGV, Segmentation fault. [Switching to Thread 0x7fffdc963700 (LWP 15982)] 0x00007ffff7910700 in std::pair<boost::unordered::iterator_detail::iterator<boost::unordered::detail::ptr_node<std::pair<std::__cxx11::basic_string<char, std::char_traits<char="">, std::allocator<char> > const, boost::shared_ptr<boost::interprocess::mapped_region> > > >, bool> boost::unordered::detail::table_impl<boost::unordered::detail::map<std::allocator<std::pair<std::__cxx11::basic_string<char, std::char_traits<char="">, std::allocator<char> > const, boost::shared_ptr<boost::interprocess::mapped_region> > >, std::cxx11::basic_string<char, std::char_traits<char="">, std::allocator<char> >, boost::shared_ptr<boost::interprocess::mapped_region>, boost::hash<std::__cxx11::basic_string<char, std::char_traits<char="">, std::allocator<char> > >, std::equal_to<std::__cxx11::basic_string<char, std::char_traits<char="">, std::allocator<char> > > > >::emplace_impl<boost::unordered::detail::emplace_args1<std::pair<std::__cxx11::basic_string<char, std::char_traits<char="">, std::allocator<char> > const, boost::shared_ptr<boost::interprocess::mapped_region> > > >(std::cxx11::basic_string<char, std::char_traits<char="">, std::allocator<char> > const&, boost::unordered::detail::emplace_args1<std::pair<std::__cxx11::basic_string<char, std::char_traits<char="">, std::allocator<char> > const, boost::shared_ptr<boost::interprocess::mapped_region> > > const&) () from /usr/local/lib/libmapnik.so.2.2

0 0x00007ffff7910700 in std::pair<boost::unordered::iterator_detail::iterator<boost::unordered::detail::ptr_node<std::pair<std::__cxx11::basic_string<char, std::char_traits<char="">, std::allocator<char> > const, boost::shared_ptr<boost::interprocess::mapped_region> > > >, bool> boost::unordered::detail::table_impl<boost::unordered::detail::map<std::allocator<std::pair<std::__cxx11::basic_string<char, std::char_traits<char="">, std::allocator<char> > const, boost::shared_ptr<boost::interprocess::mapped_region> > >, std::cxx11::basic_string<char, std::char_traits<char="">, std::allocator<char> >, boost::shared_ptr<boost::interprocess::mapped_region>, boost::hash<std::__cxx11::basic_string<char, std::char_traits<char="">, std::allocator<char> > >, std::equal_to<std::__cxx11::basic_string<char, std::char_traits<char="">, std::allocator<char> > > > >::emplace_impl<boost::unordered::detail::emplace_args1<std::pair<std::__cxx11::basic_string<char, std::char_traits<char="">, std::allocator<char> > const, boost::shared_ptr<boost::interprocess::mapped_region> > > >(std::cxx11::basic_string<char, std::char_traits<char="">, std::allocator<char> > const&, boost::unordered::detail::emplace_args1<std::pair<std::__cxx11::basic_string<char, std::char_traits<char="">, std::allocator<char> > const, boost::shared_ptr<boost::interprocess::mapped_region> > > const&) () from /usr/local/lib/libmapnik.so.2.2

1 0x00007ffff790dd57 in mapnik::mapped_memory_cache::find(std::__cxx11::basic_string<char, std::char_traits<char="">, std::allocator<char> > const&, bool) () from /usr/local/lib/libmapnik.so.2.2

2 0x00007fffe983858b in shape_io::shape_io(std::__cxx11::basic_string<char, std::char_traits<char="">, std::allocator<char> > const&, bool) () from /usr/lib/mapnik/3.0/input/shape.input

3 0x00007fffe982bfce in shape_datasource::shape_datasource(mapnik::parameters const&) () from /usr/lib/mapnik/3.0/input/shape.input

4 0x00007fffe982d581 in create () from /usr/lib/mapnik/3.0/input/shape.input

5 0x00007ffff78327ce in mapnik::datasource_cache::create(mapnik::parameters const&) () from /usr/local/lib/libmapnik.so.2.2

6 0x00007ffff789caaf in mapnik::map_parser::parse_layer(mapnik::Map&, mapnik::xml_node const&) () from /usr/local/lib/libmapnik.so.2.2

7 0x00007ffff78a1864 in mapnik::map_parser::parse_map_include(mapnik::Map&, mapnik::xml_node const&) () from /usr/local/lib/libmapnik.so.2.2

8 0x00007ffff78a35f6 in mapnik::map_parser::parse_map(mapnik::Map&, mapnik::xml_node const&, std::__cxx11::basic_string<char, std::char_traits<char="">, std::allocator<char> > const&) () from /usr/local/lib/libmapnik.so.2.2

9 0x00007ffff78a44a1 in mapnik::load_map(mapnik::Map&, std::cxx11::basic_string<char, std::char_traits<char="">, std::allocator<char> > const&, bool, std::cxx11::basic_string<char, std::char_traits<char="">, std::allocator<char> >) () from /usr/local/lib/libmapnik.so.2.2

10 0x000000000040a334 in render_thread (arg=<optimised out="">) at src/gen_tile.cpp:361

11 0x00007ffff665e6ba in start_thread (arg=0x7fffdc963700) at pthread_create.c:333

12 0x00007ffff63943dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

```

asked 13 Jul, 10:23

svrv92's gravatar image

svrv92
1114
accept rate: 0%

edited 13 Jul, 12:41

Per https://github.com/openstreetmap/mod_tile/issues/165#issuecomment-315023234 (which I suspect overlapped with you asking here) - what OS and version are you using and are there any other variations from the switch2osm guide?

(13 Jul, 10:31) SomeoneElse ♦

Thank you for reply. Could you be so kind and specify what do you mean by "OS and version", please? I want to be as specific as possible for other people and write explicit question.

(13 Jul, 10:49) svrv92
1

I followed the switch2osm guide one in one. I succeeded with everything that was before in that guide.

(13 Jul, 10:52) svrv92
1

I am using Ubuntu 16.04 LTS, does it make any sense?

(13 Jul, 10:53) svrv92

(your second comment answers it, but just to clarify) I was wondering whether you were running a different version of Ubuntu, or a different version of Linux.

(13 Jul, 10:54) SomeoneElse ♦

Someone will need to try and reproduce the problem, I think.

(13 Jul, 10:55) SomeoneElse ♦

Does it mean that I need to go through steps from a guide for a lower version of OS, e.g. https://switch2osm.org/serving-tiles/manually-building-a-tile-server-14-04/ ?

(13 Jul, 11:27) svrv92

We don't know. Segmentation faults can be caused by various issues. You could try to run the following command and show us your output: sudo -u taras gdb -batch -ex run -ex bt --args renderd -f -c /usr/local/etc/renderd.conf. It requires the program gdb to be installed.

(13 Jul, 11:49) scai ♦

Thank you so much! I added results of debugging to the end of my initial question. As I can see there are 12 issues were found in my system.

(13 Jul, 12:32) svrv92

When you ran "make" after "Install mod_tile and renderd" what output did you get? I suspect that some dependancies might have changed (within Ubuntu - the version of mod_tile referenced has not changed).

(13 Jul, 13:09) SomeoneElse ♦
showing 5 of 10 show 5 more comments

I fixed my first issue with

plugins_dir=/usr/lib/mapnik/3.0/input switch into plugins_dir=/usr/local/lib/mapnik/input

but now new issues appeared...((

Running in foreground mode... renderd[22429]: Starting stats thread debug: init_storage_backend: initialising file storage backend at: /var/lib/mod_tile debug: init_storage_backend: initialising file storage backend at: /var/lib/mod_tile renderd[22429]: Loading parameterization function for renderd[22429]: Loading parameterization function for debug: init_storage_backend: initialising file storage backend at: /var/lib/mod_tile renderd[22429]: Loading parameterization function for debug: init_storage_backend: initialising file storage backend at: /var/lib/mod_tile renderd[22429]: Loading parameterization function for Mapnik LOG> 2017-07-13 14:12:38: Unable to process some data while parsing '/home/taras/Documents/projects/luxembourg/src/openstreetmap-carto/mapnik.xml': * attribute 'minimum-scale-denominator' with value '750000' at line 268

Is it okay if it unable to process some data ??

permanent link

answered 13 Jul, 13:13

svrv92's gravatar image

svrv92
1114
accept rate: 0%

edited 13 Jul, 13:19

I did wonder why you had libmapnik 2 in there :)

Bit confused about the error at line 268 in the xml stylesheet though - are you perhaps using a different stylesheet?

I've tried updating a server to the latest version of everything and it "just works" (with OSM's "standard" style and Azerbaijan data).

(13 Jul, 13:34) SomeoneElse ♦

I am using stylesheet provided by git clone git://github.com/gravitystorm/openstreetmap-carto.git and converted into xml format with a command carto project.mml > mapnik.xml

(13 Jul, 13:48) svrv92

@SomeoneElse, could you tell me, please if these issues are crucial? e.g. Mapnik LOG> 2017-07-13 14:12:39: Unable to process some data while parsing '/home/taras/Documents/projects/luxembourg/src/openstreetmap-carto/mapnik.xml': * attribute 'minimum-scale-denominator' with value '750000' at line 268 Thank you

(13 Jul, 13:56) svrv92

Well it works for me - I wonder if something's still trying to use old libraries? The "build from source" of some things will probably look around at what libraries are available.

Does it actually work? Do any map layers appear?

(13 Jul, 14:08) SomeoneElse ♦

@SomeoneElse, yes a general map of entire world appears, nevertheless the map of Luxembourg did not appeared yet...((

means some problems still exist... which I need to solve

Thank you so much

(13 Jul, 14:14) svrv92

I think a lot of issues still exist, because I am quite anxious about this messages in the Terminal:

Running in foreground mode... ... renderd[32745]: Loading parameterization function for renderd[32745]: An error occurred while loading the map layer 'ajt': Postgis Plugin: Bad connection Connection string: ' dbname=lux connect_timeout=4' encountered during parsing of layer 'landcover-low-zoom' in Layer at line 525 of '/home/taras/Documents/projects/luxembourg/src/openstreetmap-carto/mapnik.xml' ... renderd[32745]: An error occurred while loading the map layer 'ajt': Postgis Plugin: Bad connection Connection string: ' dbname=lux connect_timeout=4' encountered during parsing of layer 'landcover-low-zoom' in Layer at line 525 of '/home/taras/Documents/projects/luxembourg/src/openstreetmap-carto/mapnik.xml'

BUT the 525 string looks okay as for me srs="+proj=merc +a=6378137 +b=6378137 +lat_ts=0.0 +lon_0=0.0 +x_0=0.0 +y_0=0.0 +k=1.0 +units=m +nadgrids=@null +wktext +no_defs +over">

(13 Jul, 14:20) svrv92

The switch2osm instructions suggest a database name of "gis" (which used to be the default in many OSM programs). Perhaps you've imported data in there but renderd is trying to access one called "lux"?

(13 Jul, 14:38) SomeoneElse ♦

Could be...

But when I check my system I do have only this:

Name | Owner | Encoding | Collate | Ctype | Access privileges -----------+----------+----------+-------------+-------------+----------------------- lux | taras | UTF8 | en_US.UTF-8 | en_US.UTF-8 | postgres | postgres | UTF8 | en_US.UTF-8 | en_US.UTF-8 | template0 | postgres | UTF8 | en_US.UTF-8 | en_US.UTF-8 | =c/postgres + | | | | | postgres=CTc/postgres template1 | postgres | UTF8 | en_US.UTF-8 | en_US.UTF-8 | =c/postgres + | | | | | postgres=CTc/postgres (4 rows)

(13 Jul, 14:45) svrv92

Maybe I need to set PostgreSQL login method to "trust" in pg_hba.conf file. I just do not know how to perform that... I know the command sudo nano /etc/postgresql/9.5/main/pg_hba.conf, but what exactly I need to change I have no idea literally...

(13 Jul, 14:53) svrv92
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question asked: 13 Jul, 10:23

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last updated: 13 Jul, 14:59

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