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 [open_basedir](https://www.php.net/manual/en/ini.core.php#ini.open-basedir) setting
30 in your PHP configuration (`php.ini file`). By default this setting may look like this:
32 open_basedir = /srv/http/:/home/:/tmp/:/usr/share/pear/
34 Either add reported directories to the list or disable this setting temporarily by
35 dding ";" at the beginning of the line. Don't forget to enable this setting again
36 once you are done with the PHP command line operations.
39 ### PHP timzeone warnings
41 The Apache log may contain lots of PHP warnings like this:
42 `PHP Warning: date_default_timezone_set() function.`
44 You should set the default time zone as instructed in the warning in
45 your `php.ini` file. Find the entry about timezone and set it to
48 ; Defines the default timezone used by the date functions
49 ; https://php.net/date.timezone
50 date.timezone = 'America/Denver'
55 echo "date.timezone = 'America/Denver'" > /etc/php.d/timezone.ini
58 ### nominatim.so version mismatch
60 When running the import you may get a version mismatch:
61 `COPY_END for place failed: ERROR: incompatible library "/srv/Nominatim/nominatim/build/module/nominatim.so": version mismatch`
63 pg_config seems to use bad includes sometimes when multiple versions
64 of PostgreSQL are available in the system. Make sure you remove the
65 server development libraries (`postgresql-server-dev-9.5` on Ubuntu)
66 and recompile (`cmake .. && make`).
69 ## I see the error "ERROR: permission denied for language c"
71 `nominatim.so`, written in C, is required to be installed on the database
72 server. Some managed database (cloud) services like Amazon RDS do not allow
73 this. There is currently no work-around other than installing a database
74 on a non-managed machine.
77 ### I see the error: "function transliteration(text) does not exist"
79 Reinstall the nominatim functions with `setup.php --create--functions`
80 and check for any errors, e.g. a missing `nominatim.so` file.
82 ### I see the error: "ERROR: mmap (remap) failed"
84 This may be a simple out-of-memory error. Try reducing the memory used
85 for `--osm2pgsql-cache`. Also make sure that overcommitting memory is
86 allowed: `cat /proc/sys/vm/overcommit_memory` should print 0 or 1.
88 If you are using a flatnode file, then it may also be that the underlying
89 filesystem does not fully support 'mmap'. A notable candidate is virtualbox's
92 ### nominatim UPDATE failed: ERROR: buffer 179261 is not owned by resource owner Portal
94 Several users [reported this](https://github.com/openstreetmap/Nominatim/issues/1168) during the initial import of the database. It's
95 something PostgreSQL internal Nominatim doesn't control. And PostgreSQL forums
96 suggest it's threading related but definitely some kind of crash of a process.
97 Users reported either rebooting the server, different hardware or just trying
98 the import again worked.
100 ### The website shows: "Could not get word tokens"
102 The server cannot access your database. Add `&debug=1` to your URL
103 to get the full error message.
106 ### On CentOS the website shows "Could not connect to server"
108 `could not connect to server: No such file or directory`
110 On CentOS v7 the PostgreSQL server is started with `systemd`.
111 Check if `/usr/lib/systemd/system/httpd.service` contains a line `PrivateTmp=true`.
112 If so then Apache cannot see the `/tmp/.s.PGSQL.5432` file. It's a good security feature,
113 so use the [preferred solution](../appendix/Install-on-Centos-7/#adding-selinux-security-settings).
115 However, you can solve this the quick and dirty way by commenting out that line and then run
117 sudo systemctl daemon-reload
118 sudo systemctl restart httpd
121 ### "must be an array or an object that implements Countable" warning in /usr/share/pear/DB.php
123 The warning started with PHP 7.2. Make sure you have at least [version 1.9.3 of PEAR DB](https://github.com/pear/DB/releases)
126 ### Website reports "DB Error: insufficient permissions"
128 The user the webserver, e.g. Apache, runs under needs to have access to the Nominatim database. You can find the user like [this](https://serverfault.com/questions/125865/finding-out-what-user-apache-is-running-as), for default Ubuntu operating system for example it's `www-data`.
130 1. Repeat the `createuser` step of the installation instructions.
132 2. Give the user permission to existing tables
135 GRANT usage ON SCHEMA public TO "www-data";
136 GRANT SELECT ON ALL TABLES IN SCHEMA public TO "www-data";
139 ### Website reports "Could not load library "nominatim.so"
141 Example error message
144 SELECT make_standard_name('3039 E MEADOWLARK LN') [nativecode=ERROR: could not
145 load library "/srv/nominatim/Nominatim-3.1.0/build/module/nominatim.so":
146 /srv/nominatim/Nominatim-3.1.0/build/module/nominatim.so: cannot open shared
147 object file: Permission denied
148 CONTEXT: PL/pgSQL function make_standard_name(text) line 5 at assignment]
151 The PostgreSQL database, i.e. user `postgres`, needs to have access to that file.
153 The permission need to be read & executable by everybody, e.g.
156 -rwxr-xr-x 1 nominatim nominatim 297984 build/module/nominatim.so
159 Try `chmod a+r nominatim.so; chmod a+x nominatim.so`.
161 When running SELinux, make sure that the
162 [context is set up correctly](../appendix/Install-on-Centos-7/#adding-selinux-security-settings).
164 ### Setup.php fails with "DB Error: extension not found"
166 Make sure you have the PostgreSQL extensions "hstore" and "postgis" installed.
167 See the installation instruction for a full list of required packages.
170 ### Setup.php reports "Cannot redeclare getDB()"
172 `Cannot redeclare getDB() (previously declared in /your/path/Nominatim/lib/db.php:4)`
174 The message is a bit misleading as PHP needs to load the file `DB.php` and
175 instead re-loads Nominatim's `db.php`. To solve this make sure you
176 have the [Pear module 'DB'](https://pear.php.net/package/DB/) installed.
180 ### I forgot to delete the flatnodes file before starting an import.
182 That's fine. For each import the flatnodes file get overwritten.
183 See [https://help.openstreetmap.org/questions/52419/nominatim-flatnode-storage]()
184 for more information.
187 ## Running your own instance
189 ### Can I import multiple countries and keep them up to date?
191 You should use the extracts and updates from https://download.geofabrik.de.
192 For the initial import, download the countries you need and merge them.
193 See [OSM Help](https://help.openstreetmap.org/questions/48843/merging-two-or-more-geographical-areas-to-import-two-or-more-osm-files-in-nominatim)
194 for examples how to do that. Use the resulting single osm file when
197 For updates you need to download the change files for each country
198 once per day and apply them **separately** using
200 ./utils/update.php --import-diff <filename> --index
202 See [this issue](https://github.com/openstreetmap/Nominatim/issues/60#issuecomment-18679446)
203 for a script that runs the updates using osmosis.
205 ### Can I import negative OSM ids into Nominatim?
207 See [this question of Stackoverflow](https://help.openstreetmap.org/questions/64662/nominatim-flatnode-with-negative-id).
209 ### Missing XML or text declaration
211 The website might show: `XML Parsing Error: XML or text declaration not at start of entity Location.`
213 Make sure there are no spaces at the beginning of your `settings/local.php` file.