doc/Install.md: troubleshooting: Diaspora support, DB migration timeout

diff --git a/doc/Install.md b/doc/Install.md
index de4ef1b652307c4eaa95b67e1cf44df77270a191..51cddf4536d1592e8eb71f773eee7103afe00f1e 100644 (file)
--- a/doc/Install.md
+++ b/doc/Install.md
@@ -535,3 +535,21 @@ In your ModSecurity WAF config:
 
 In the end, you will need to restart all services that you have changed configuration for.
 If you don't know which ones these are, just reboot.
 
 In the end, you will need to restart all services that you have changed configuration for.
 If you don't know which ones these are, just reboot.

+
+### Diaspora support is not activated
+
+You get this error when you try to add a Diaspora contact.
+
+You can enable it from the web interface in `Admin -> Site -> Policies -> Enable diaspora* support`.
+You may also set it manually in the config file or in the database within the `diaspora_enabled` key of the `system` category.
+
+### Upgrade failed due to DB migration timeout
+
+Altering of a table may fail if it contains a large number of rows.
+First verify the existing timeout (50s by default):
+
+`show global variables like "innodb_lock_wait_timeout";`
+
+Then increase it:
+
+`set global innodb_lock_wait_timeout=600;`