1 # Troubleshooting Nominatim Installations
5 ### Can a stopped/killed import process be resumed?
7 "I accidentally killed the import process after it has been running for many hours. Can it be resumed?"
9 It is possible if the import already got to the indexing stage.
10 Check the last line of output that was logged before the process
11 was killed. If it looks like this:
14 Done 844 in 13 @ 64.923080 per second - Rank 26 ETA (seconds): 7.886255
16 then you can resume with the following command:
19 ./utils/setup.php --index --create-search-indices --create-country-names
22 If the reported rank is 26 or higher, you can also safely add `--index-noanalyse`.
25 ### PHP "open_basedir restriction in effect" warnings
27 PHP Warning: file_get_contents(): open_basedir restriction in effect.
29 You need to adjust the
30 [open_basedir](https://www.php.net/manual/en/ini.core.php#ini.open-basedir)
31 setting in your PHP configuration (`php.ini` file). By default this setting may
34 open_basedir = /srv/http/:/home/:/tmp/:/usr/share/pear/
36 Either add reported directories to the list or disable this setting temporarily
37 by adding ";" at the beginning of the line. Don't forget to enable this setting
38 again once you are done with the PHP command line operations.
41 ### PHP timzeone warnings
43 The Apache log may contain lots of PHP warnings like this:
44 `PHP Warning: date_default_timezone_set() function.`
46 You should set the default time zone as instructed in the warning in
47 your `php.ini` file. Find the entry about timezone and set it to
50 ; Defines the default timezone used by the date functions
51 ; https://php.net/date.timezone
52 date.timezone = 'America/Denver'
57 echo "date.timezone = 'America/Denver'" > /etc/php.d/timezone.ini
60 ### nominatim.so version mismatch
62 When running the import you may get a version mismatch:
63 `COPY_END for place failed: ERROR: incompatible library "/srv/Nominatim/nominatim/build/module/nominatim.so": version mismatch`
65 pg_config seems to use bad includes sometimes when multiple versions
66 of PostgreSQL are available in the system. Make sure you remove the
67 server development libraries (`postgresql-server-dev-9.5` on Ubuntu)
68 and recompile (`cmake .. && make`).
71 ## I see the error "ERROR: permission denied for language c"
73 `nominatim.so`, written in C, is required to be installed on the database
74 server. Some managed database (cloud) services like Amazon RDS do not allow
75 this. There is currently no work-around other than installing a database
76 on a non-managed machine.
79 ### I see the error: "function transliteration(text) does not exist"
81 Reinstall the nominatim functions with `setup.php --create--functions`
82 and check for any errors, e.g. a missing `nominatim.so` file.
84 ### I see the error: "ERROR: mmap (remap) failed"
86 This may be a simple out-of-memory error. Try reducing the memory used
87 for `--osm2pgsql-cache`. Also make sure that overcommitting memory is
88 allowed: `cat /proc/sys/vm/overcommit_memory` should print 0 or 1.
90 If you are using a flatnode file, then it may also be that the underlying
91 filesystem does not fully support 'mmap'. A notable candidate is virtualbox's
94 ### nominatim UPDATE failed: ERROR: buffer 179261 is not owned by resource owner Portal
96 Several users [reported this](https://github.com/openstreetmap/Nominatim/issues/1168) during the initial import of the database. It's
97 something PostgreSQL internal Nominatim doesn't control. And PostgreSQL forums
98 suggest it's threading related but definitely some kind of crash of a process.
99 Users reported either rebooting the server, different hardware or just trying
100 the import again worked.
102 ### The website shows: "Could not get word tokens"
104 The server cannot access your database. Add `&debug=1` to your URL
105 to get the full error message.
108 ### On CentOS the website shows "Could not connect to server"
110 `could not connect to server: No such file or directory`
112 On CentOS v7 the PostgreSQL server is started with `systemd`. Check if
113 `/usr/lib/systemd/system/httpd.service` contains a line `PrivateTmp=true`. If
114 so then Apache cannot see the `/tmp/.s.PGSQL.5432` file. It's a good security
116 [preferred solution](../appendix/Install-on-Centos-7/#adding-selinux-security-settings).
118 However, you can solve this the quick and dirty way by commenting out that line and then run
120 sudo systemctl daemon-reload
121 sudo systemctl restart httpd
124 ### Website reports "DB Error: insufficient permissions"
126 The user the webserver, e.g. Apache, runs under needs to have access to the
127 Nominatim database. You can find the user like
128 [this](https://serverfault.com/questions/125865/finding-out-what-user-apache-is-running-as),
129 for default Ubuntu operating system for example it's `www-data`.
131 1. Repeat the `createuser` step of the installation instructions.
133 2. Give the user permission to existing tables
136 GRANT usage ON SCHEMA public TO "www-data";
137 GRANT SELECT ON ALL TABLES IN SCHEMA public TO "www-data";
140 ### Website reports "Could not load library "nominatim.so"
142 Example error message
145 SELECT make_standard_name('3039 E MEADOWLARK LN') [nativecode=ERROR: could not
146 load library "/srv/nominatim/Nominatim-3.1.0/build/module/nominatim.so":
147 /srv/nominatim/Nominatim-3.1.0/build/module/nominatim.so: cannot open shared
148 object file: Permission denied
149 CONTEXT: PL/pgSQL function make_standard_name(text) line 5 at assignment]
152 The PostgreSQL database, i.e. user `postgres`, needs to have access to that file.
154 The permission need to be read & executable by everybody, e.g.
157 -rwxr-xr-x 1 nominatim nominatim 297984 build/module/nominatim.so
160 Try `chmod a+r nominatim.so; chmod a+x nominatim.so`.
162 When running SELinux, make sure that the
163 [context is set up correctly](../appendix/Install-on-Centos-7/#adding-selinux-security-settings).
165 ### Setup.php fails with "DB Error: extension not found"
167 Make sure you have the PostgreSQL extensions "hstore" and "postgis" installed.
168 See the installation instructions for a full list of required packages.
171 ### I forgot to delete the flatnodes file before starting an import.
173 That's fine. For each import the flatnodes file get overwritten.
174 See [https://help.openstreetmap.org/questions/52419/nominatim-flatnode-storage]()
175 for more information.
178 ## Running your own instance
180 ### Can I import multiple countries and keep them up to date?
182 You should use the extracts and updates from https://download.geofabrik.de.
183 For the initial import, download the countries you need and merge them.
184 See [OSM Help](https://help.openstreetmap.org/questions/48843/merging-two-or-more-geographical-areas-to-import-two-or-more-osm-files-in-nominatim)
185 for examples how to do that. Use the resulting single osm file when
188 For updates you need to download the change files for each country
189 once per day and apply them **separately** using
191 ./utils/update.php --import-diff <filename> --index
193 See [this issue](https://github.com/openstreetmap/Nominatim/issues/60#issuecomment-18679446)
194 for a script that runs the updates using osmosis.
196 ### Can I import negative OSM ids into Nominatim?
198 See [this question of Stackoverflow](https://help.openstreetmap.org/questions/64662/nominatim-flatnode-with-negative-id).
200 ### Missing XML or text declaration
202 The website might show: `XML Parsing Error: XML or text declaration not at start of entity Location.`
204 Make sure there are no spaces at the beginning of your `settings/local.php` file.