then you can resume with the following command:
```sh
-./utils/setup.php --index --create-search-indices --create-country-names
+nominatim import --continue indexing
```
If the reported rank is 26 or higher, you can also safely add `--index-noanalyse`.
+### PostgreSQL crashed "invalid page in block"
+
+Usually serious problem, can be a hardware issue, not all data written to disc
+for example. Check PostgreSQL log file and search PostgreSQL issues/mailing
+list for hints.
+
+If it happened during index creation you can try rerunning the step with
+
+```sh
+nominatim import --continue indexing
+```
+
+Otherwise it's best to start the full setup from the beginning.
+
+
### PHP "open_basedir restriction in effect" warnings
PHP Warning: file_get_contents(): open_basedir restriction in effect.
again once you are done with the PHP command line operations.
-### PHP timzeone warnings
+### PHP timezeone warnings
The Apache log may contain lots of PHP warnings like this:
`PHP Warning: date_default_timezone_set() function.`
and recompile (`cmake .. && make`).
-## I see the error "ERROR: permission denied for language c"
+### I see the error "ERROR: permission denied for language c"
`nominatim.so`, written in C, is required to be installed on the database
server. Some managed database (cloud) services like Amazon RDS do not allow
### I see the error: "function transliteration(text) does not exist"
-Reinstall the nominatim functions with `setup.php --create--functions`
+Reinstall the nominatim functions with `nominatim refresh --functions`
and check for any errors, e.g. a missing `nominatim.so` file.
### I see the error: "ERROR: mmap (remap) failed"
### nominatim UPDATE failed: ERROR: buffer 179261 is not owned by resource owner Portal
-Several users [reported this](https://github.com/openstreetmap/Nominatim/issues/1168) during the initial import of the database. It's
+Several users [reported this](https://github.com/openstreetmap/Nominatim/issues/1168)
+during the initial import of the database. It's
something PostgreSQL internal Nominatim doesn't control. And PostgreSQL forums
suggest it's threading related but definitely some kind of crash of a process.
Users reported either rebooting the server, different hardware or just trying
to get the full error message.
-### On CentOS the website shows "Could not connect to server"
-
-`could not connect to server: No such file or directory`
-
-On CentOS v7 the PostgreSQL server is started with `systemd`. Check if
-`/usr/lib/systemd/system/httpd.service` contains a line `PrivateTmp=true`. If
-so then Apache cannot see the `/tmp/.s.PGSQL.5432` file. It's a good security
-feature, so use the
-[preferred solution](../appendix/Install-on-Centos-7/#adding-selinux-security-settings).
-
-However, you can solve this the quick and dirty way by commenting out that line and then run
-
- sudo systemctl daemon-reload
- sudo systemctl restart httpd
-
-
### Website reports "DB Error: insufficient permissions"
The user the webserver, e.g. Apache, runs under needs to have access to the
The PostgreSQL database, i.e. user `postgres`, needs to have access to that file.
-The permission need to be read & executable by everybody, e.g.
+The permission need to be read & executable by everybody, but not writeable
+by everybody, e.g.
```
-rwxr-xr-x 1 nominatim nominatim 297984 build/module/nominatim.so
Try `chmod a+r nominatim.so; chmod a+x nominatim.so`.
When running SELinux, make sure that the
-[context is set up correctly](../appendix/Install-on-Centos-7/#adding-selinux-security-settings).
+[context is set up correctly](../appendix/Install-on-Centos-8.md#adding-selinux-security-settings).
+
+When you recently updated your operating system, updated PostgreSQL to
+a new version or moved files (e.g. the build directory) you should
+recreate `nominatim.so`. Try
+
+```
+ cd build
+ rm -r module/
+ cmake $main_Nominatim_path && make
+```
### Setup.php fails with "DB Error: extension not found"
### I forgot to delete the flatnodes file before starting an import.
That's fine. For each import the flatnodes file get overwritten.
-See [https://help.openstreetmap.org/questions/52419/nominatim-flatnode-storage]()
+See [https://help.openstreetmap.org/questions/52419/nominatim-flatnode-storage](https://help.openstreetmap.org/questions/52419/nominatim-flatnode-storage)
for more information.
## Running your own instance
-### Can I import multiple countries and keep them up to date?
-
-You should use the extracts and updates from https://download.geofabrik.de.
-For the initial import, download the countries you need and merge them.
-See [OSM Help](https://help.openstreetmap.org/questions/48843/merging-two-or-more-geographical-areas-to-import-two-or-more-osm-files-in-nominatim)
-for examples how to do that. Use the resulting single osm file when
-running `setup.php`.
-
-For updates you need to download the change files for each country
-once per day and apply them **separately** using
-
- ./utils/update.php --import-diff <filename> --index
-
-See [this issue](https://github.com/openstreetmap/Nominatim/issues/60#issuecomment-18679446)
-for a script that runs the updates using osmosis.
-
### Can I import negative OSM ids into Nominatim?
See [this question of Stackoverflow](https://help.openstreetmap.org/questions/64662/nominatim-flatnode-with-negative-id).
-
-### Missing XML or text declaration
-
-The website might show: `XML Parsing Error: XML or text declaration not at start of entity Location.`
-
-Make sure there are no spaces at the beginning of your `settings/local.php` file.
-
-