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 nominatim import --continue indexing
22 If the reported rank is 26 or higher, you can also safely add `--index-noanalyse`.
25 ### PostgreSQL crashed "invalid page in block"
27 Usually serious problem, can be a hardware issue, not all data written to disc
28 for example. Check PostgreSQL log file and search PostgreSQL issues/mailing
31 If it happened during index creation you can try rerunning the step with
34 nominatim import --continue indexing
37 Otherwise it's best to start the full setup from the beginning.
40 ### PHP "open_basedir restriction in effect" warnings
42 PHP Warning: file_get_contents(): open_basedir restriction in effect.
44 You need to adjust the
45 [open_basedir](https://www.php.net/manual/en/ini.core.php#ini.open-basedir)
46 setting in your PHP configuration (`php.ini` file). By default this setting may
49 open_basedir = /srv/http/:/home/:/tmp/:/usr/share/pear/
51 Either add reported directories to the list or disable this setting temporarily
52 by adding ";" at the beginning of the line. Don't forget to enable this setting
53 again once you are done with the PHP command line operations.
56 ### PHP timezeone warnings
58 The Apache log may contain lots of PHP warnings like this:
59 `PHP Warning: date_default_timezone_set() function.`
61 You should set the default time zone as instructed in the warning in
62 your `php.ini` file. Find the entry about timezone and set it to
65 ; Defines the default timezone used by the date functions
66 ; https://php.net/date.timezone
67 date.timezone = 'America/Denver'
72 echo "date.timezone = 'America/Denver'" > /etc/php.d/timezone.ini
75 ### nominatim.so version mismatch
77 When running the import you may get a version mismatch:
78 `COPY_END for place failed: ERROR: incompatible library "/srv/Nominatim/nominatim/build/module/nominatim.so": version mismatch`
80 pg_config seems to use bad includes sometimes when multiple versions
81 of PostgreSQL are available in the system. Make sure you remove the
82 server development libraries (`postgresql-server-dev-9.5` on Ubuntu)
83 and recompile (`cmake .. && make`).
86 ### I see the error "ERROR: permission denied for language c"
88 `nominatim.so`, written in C, is required to be installed on the database
89 server. Some managed database (cloud) services like Amazon RDS do not allow
90 this. There is currently no work-around other than installing a database
91 on a non-managed machine.
94 ### I see the error: "function transliteration(text) does not exist"
96 Reinstall the nominatim functions with `nominatim refresh --functions`
97 and check for any errors, e.g. a missing `nominatim.so` file.
99 ### I see the error: "ERROR: mmap (remap) failed"
101 This may be a simple out-of-memory error. Try reducing the memory used
102 for `--osm2pgsql-cache`. Also make sure that overcommitting memory is
103 allowed: `cat /proc/sys/vm/overcommit_memory` should print 0 or 1.
105 If you are using a flatnode file, then it may also be that the underlying
106 filesystem does not fully support 'mmap'. A notable candidate is virtualbox's
109 ### I see the error: "clang: Command not found" on CentOS
111 On CentOS 7 users reported `/opt/rh/llvm-toolset-7/root/usr/bin/clang: Command not found`.
112 Double-check clang is installed. Instead of `make` try running `make CLANG=true`.
114 ### nominatim UPDATE failed: ERROR: buffer 179261 is not owned by resource owner Portal
116 Several users [reported this](https://github.com/openstreetmap/Nominatim/issues/1168)
117 during the initial import of the database. It's
118 something PostgreSQL internal Nominatim doesn't control. And PostgreSQL forums
119 suggest it's threading related but definitely some kind of crash of a process.
120 Users reported either rebooting the server, different hardware or just trying
121 the import again worked.
123 ### The website shows: "Could not get word tokens"
125 The server cannot access your database. Add `&debug=1` to your URL
126 to get the full error message.
129 ### On CentOS the website shows "Could not connect to server"
131 `could not connect to server: No such file or directory`
133 On CentOS v7 the PostgreSQL server is started with `systemd`. Check if
134 `/usr/lib/systemd/system/httpd.service` contains a line `PrivateTmp=true`. If
135 so then Apache cannot see the `/tmp/.s.PGSQL.5432` file. It's a good security
137 [preferred solution](../appendix/Install-on-Centos-7.md#adding-selinux-security-settings).
139 However, you can solve this the quick and dirty way by commenting out that line and then run
141 sudo systemctl daemon-reload
142 sudo systemctl restart httpd
145 ### Website reports "DB Error: insufficient permissions"
147 The user the webserver, e.g. Apache, runs under needs to have access to the
148 Nominatim database. You can find the user like
149 [this](https://serverfault.com/questions/125865/finding-out-what-user-apache-is-running-as),
150 for default Ubuntu operating system for example it's `www-data`.
152 1. Repeat the `createuser` step of the installation instructions.
154 2. Give the user permission to existing tables
157 GRANT usage ON SCHEMA public TO "www-data";
158 GRANT SELECT ON ALL TABLES IN SCHEMA public TO "www-data";
161 ### Website reports "Could not load library "nominatim.so"
163 Example error message
166 SELECT make_standard_name('3039 E MEADOWLARK LN') [nativecode=ERROR: could not
167 load library "/srv/nominatim/Nominatim-3.1.0/build/module/nominatim.so":
168 /srv/nominatim/Nominatim-3.1.0/build/module/nominatim.so: cannot open shared
169 object file: Permission denied
170 CONTEXT: PL/pgSQL function make_standard_name(text) line 5 at assignment]
173 The PostgreSQL database, i.e. user `postgres`, needs to have access to that file.
175 The permission need to be read & executable by everybody, but not writeable
179 -rwxr-xr-x 1 nominatim nominatim 297984 build/module/nominatim.so
182 Try `chmod a+r nominatim.so; chmod a+x nominatim.so`.
184 When running SELinux, make sure that the
185 [context is set up correctly](../appendix/Install-on-Centos-7.md#adding-selinux-security-settings).
187 When you recently updated your operating system, updated PostgreSQL to
188 a new version or moved files (e.g. the build directory) you should
189 recreate `nominatim.so`. Try
194 cmake $main_Nominatim_path && make
197 ### Setup.php fails with "DB Error: extension not found"
199 Make sure you have the PostgreSQL extensions "hstore" and "postgis" installed.
200 See the installation instructions for a full list of required packages.
203 ### I forgot to delete the flatnodes file before starting an import.
205 That's fine. For each import the flatnodes file get overwritten.
206 See [https://help.openstreetmap.org/questions/52419/nominatim-flatnode-storage](https://help.openstreetmap.org/questions/52419/nominatim-flatnode-storage)
207 for more information.
210 ## Running your own instance
212 ### Can I import negative OSM ids into Nominatim?
214 See [this question of Stackoverflow](https://help.openstreetmap.org/questions/64662/nominatim-flatnode-with-negative-id).