Upgrade Travis-CI from Ubuntu 18 to 20

[nominatim.git] / docs / admin / Faq.md

diff --git a/docs/admin/Faq.md b/docs/admin/Faq.md
index 126d79772459c1beb6209c9637c4a9fde7003305..bca6b49ddd6c6fae26da3df26ce6611c7e179c62 100644 (file)
--- a/docs/admin/Faq.md
+++ b/docs/admin/Faq.md
@@ -22,6 +22,21 @@ then you can resume with the following command:
 If the reported rank is 26 or higher, you can also safely add `--index-noanalyse`.
 
 
 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
+./utils/setup.php --create-search-indices --ignore-errors
+```
+
+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.
 ### PHP "open_basedir restriction in effect" warnings
 
     PHP Warning:  file_get_contents(): open_basedir restriction in effect.


@@ -38,7 +53,7 @@ by adding ";" at the beginning of the line. Don't forget to enable this setting
 again once you are done with the PHP command line operations.
 
 
 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.`
 
 The Apache log may contain lots of PHP warnings like this:
     `PHP Warning:  date_default_timezone_set() function.`


@@ -156,7 +171,8 @@ Example error message
 
 The PostgreSQL database, i.e. user `postgres`, needs to have access to that file.
 
 
 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
 
 ```
    -rwxr-xr-x 1 nominatim nominatim 297984 build/module/nominatim.so


@@ -167,6 +183,16 @@ 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).
 
 When running SELinux, make sure that the
 [context is set up correctly](../appendix/Install-on-Centos-7/#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"
 
 Make sure you have the PostgreSQL extensions "hstore" and "postgis" installed.
 ### Setup.php fails with "DB Error: extension not found"
 
 Make sure you have the PostgreSQL extensions "hstore" and "postgis" installed.