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INSTALL.md
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@ -1,347 +0,0 @@
# Friendica Installation
We've tried very hard to ensure that Friendica will run on commodity hosting
platforms - such as those used to host Wordpress blogs and Drupal websites.
But be aware that Friendica is more than a simple web application. It is a
complex communications system which more closely resembles an email server than
a web server. For reliability and performance, messages are delivered in the
background and are queued for later delivery when sites are down. This kind of
functionality requires a bit more of the host system than the typical blog.
Not every PHP/MySQL hosting provider will be able to support Friendica. Many will.
But please review the requirements and confirm these with your hosting provider
prior to installation.
Before you begin: Choose a domain name or subdomain name for your server.
Put some thought into this - because changing it is currently not-supported.
Things will break, and some of your friends may have difficulty communicating with you.
We plan to address this limitation in a future release. Also decide if you wish
to connect with members of the Diaspora network, as this will impact the
installation requirements.
Decide if you will use SSL and obtain an SSL cert. Communications with the
Diaspora network MAY require both SSL AND an SSL cert signed by a CA which is
recognized by major browsers. Friendica will work with self-signed certs but
Diaspora communication may not. For best results, install your cert PRIOR to
installing Friendica and when visiting your site for the initial installation in
step 5, please use the https: link. (Use the http: or non-SSL link if your cert
is self-signed).
## 1. Requirements
- Apache with mod-rewrite enabled and "Options All" so you can use a local .htaccess file
- PHP 7+ (PHP 7.1+ recommended for performance and official support).
- PHP *command line* with `register_argc_argv = true` in php.ini
- curl, gd (with at least jpeg support), mysql, mbstring, xml, zip and openssl extensions
- Some form of email server or email gateway such that PHP mail() works
- The POSIX module of PHP needs to be activated (e.g. RHEL, CentOS have disabled it)
- Composer for a Git install
- Mysql 5.6+ or an equivalent alternative for MySQL (MariaDB 10.0.5+, Percona Server etc.)
- Ability to schedule jobs with cron (Linux/Mac) or Scheduled Tasks (Windows)
- Installation into a top-level domain or sub-domain (without a directory/path
component in the URL) is preferred. This is REQUIRED if you wish to communicate
with the Diaspora network.
- For alternative server configurations (such as Nginx server and MariaDB database
engine), refer to the [Friendica wiki](https://github.com/friendica/friendica/wiki).
This guide will walk you through the manual installation process of Friendica.
If this is nothing for you, you might be interested in:
* the Friendica Docker image (https://github.com/friendica/docker) or
* how install Friendica with YunoHost (https://github.com/YunoHost-Apps/friendica_ynh).
## 2. Install Friendica sources
Unpack the Friendica files into the root of your web server document area.
If you copy the directory tree to your webserver, make sure that you also copy
`.htaccess-dist` - as "dot" files are often hidden and aren't normally copied.
OR
Clone the friendica/friendica GitHub repository and import dependencies
git clone https://github.com/friendica/friendica -b master [web server folder]
cd [web server folder]
bin/composer.phar install --no-dev
Make sure the folder view/smarty3 exists and is writable by the webserver user,
in this case `www-data`
mkdir view/smarty3
chown www-data:www-data view/smarty3
chmod 775 view/smarty3
Get the addons by going into your website folder.
cd mywebsite
Clone the addon repository (separately):
git clone https://github.com/friendica/friendica-addons.git -b master addon
If you want to use the development version of Friendica you can switch to the
develop branch in the repository by running
git checkout develop
bin/composer.phar install
cd addon
git checkout develop
Please be aware that the develop branch is unstable.
Exercise caution when pulling.
If you encounter a bug, please let us know.
Either way, if you use Apache, copy `.htaccess-dist` to `.htaccess` to enable
URL rewriting.
## 3. Database
Create an empty database and note the access details (hostname, username, password,
database name).
- Friendica needs the permission to create and delete fields and tables in its
own database.
- Please check the additional notes if running on MySQ 5.7.17 or newer
## 4. Config
If you know in advance that it will be impossible for the web server to write or
create files in the `config/` directory, please create an empty file called
`local.config.php` in it and make it writable by the web server.
## 5a. Install Wizard
Visit your website with a web browser and follow the instructions.
Please note any error messages and correct these before continuing.
If you are using SSL with a known signature authority (recommended), use the
https: link to your website. If you are using a self-signed cert or no cert,
use the http: link.
If you need to specify a port for the connection to the database, you can do so
in the host name setting for the database.
## 5b. Manual install
*If* the automated installation fails for any reason, please check the following:
- `config/local.config.php` exists
- If not, copy `config/local-sample.config.php` to `config/local.config.php`
and edit it with your settings.
- Database is populated.
- If not, import the contents of `database.sql` with phpMyAdmin or the mysql
command line tool.
## 6. Register the admin account
At this point visit your website again, and register your personal account with
the same email as in the `config.admin_email` config value.
Registration errors should all be recoverable automatically.
If you get any *critical* failure at this point, it generally indicates the
database was not installed correctly. You might wish to delete/rename
`config/local.config.php` to another name and drop all the database tables so
that you can start fresh.
## 7. Background tasks (IMPORTANT)
Set up a cron job or scheduled task to run the worker once every 5-10 minutes to
pick up the recent "public" postings of your friends. Example:
cd /base/directory; /path/to/php bin/worker.php
Change "/base/directory", and "/path/to/php" as appropriate for your situation.
If you are using a Linux server, run "crontab -e" and add a line like the one
shown, substituting for your unique paths and settings:
*/10 * * * * cd /home/myname/mywebsite; /usr/bin/php bin/worker.php
You can generally find the location of PHP by executing "which php".
If you have troubles with this section please contact your hosting provider for assistance.
Friendica will not work correctly if you cannot perform this step.
You should also be sure that `config.php_path` is set correctly, it should look
like this: (changing it to the correct PHP location)
'config' => [
'php_path' => '/usr/local/php56/bin/php',
]
Alternative: If you cannot use a cron job as described above, you can use the
frontend worker and an external cron service to trigger the execution of the worker script.
You can enable the frontend worker after the installation from the admin panel
of your node and call:
https://example.com/worker
with the service of your choice.
## 8. (Recommended) Set up a backup plan
Bad things will happen.
Let there be a hardware failure, a corrupted database or whatever you can think of.
So once the installation of your Friendica node is done, you should make yourself
a backup plan.
The most important file is the `config/local.config.php` file in the base directory.
As it stores all your data, you should also have a recent dump of your Friendica
database at hand, should you have to recover your node.
## 9. (Optional) Reverse-proxying and HTTPS
Friendica looks for some well-known HTTP headers indicating a reverse-proxy
terminating an HTTPS connection.
While the standard from RFC 7239 specifies the use of the `Forwaded` header.
Forwarded: for=192.0.2.1; proto=https; by=192.0.2.2
Friendica also supports a number on non-standard headers in common use.
X-Forwarded-Proto: https
Front-End-Https: on
X-Forwarded-Ssl: on
It is however preferable to use the standard approach if configuring a new server.
## Troubleshooting
### "System is currently unavailable. Please try again later"
Check your database settings.
It usually means your database could not be opened or accessed.
If the database resides on the same machine, check that the database server name
is "localhost".
### 500 Internal Error
This could be the result of one of our Apache directives not being supported by
your version of Apache. Examine your apache server logs.
You might remove the line "Options -Indexes" from the .htaccess file if you are
using a Windows server as this has been known to cause problems.
Also check your file permissions. Your website and all contents must generally
be world-readable.
It is likely that your web server reported the source of the problem in its error log files.
Please review these system error logs to determine what caused the problem.
Often this will need to be resolved with your hosting provider or (if self-hosted)
your web server configuration.
### 400 and 4xx "File not found" errors
First check your file permissions.
Your website and all contents must generally be world-readable.
Ensure that mod-rewite is installed and working, and that your `.htaccess` file
is being used. To verify the latter, create a file `test.out` containing the
word "test" in the top directory of Friendica, make it world readable and point
your web browser to
http://yoursitenamehere.com/test.out
This file should be blocked. You should get a permission denied message.
If you see the word "test" your Apache configuration is not allowing your
`.htaccess` file to be used (there are rules in this file to block access to any
file with .out at the end, as these are typically used for system logs).
Make certain the `.htaccess` file exists and is readable by everybody, then look
for the existence of "AllowOverride None" in the Apache server configuration for your site.
This will need to be changed to "AllowOverride All".
If you do not see the word "test", your `.htaccess` is working, but it is likely
that mod-rewrite is not installed in your web server or is not working.
On most Linux flavors:
% a2enmod rewrite
% /etc/init.d/apache2 restart
Consult your hosting provider, experts on your particular Linux distribution or
(if Windows) the provider of your Apache server software if you need to change
either of these and can not figure out how. There is a lot of help available on
the web. Search "mod-rewrite" along with the name of your operating system
distribution or Apache package (if using Windows).
### Unable to write the file config/local.config.php due to permissions issues
Create an empty `config/local.config.php`file with that name and give it
world-write permission.
On Linux:
% touch config/local.config.php
% chmod 664 config/local.config.php
Retry the installation. As soon as the database has been created,
******* this is important *********
% chmod 644 config/local.config.php
### Suhosin issues
Some configurations with "suhosin" security are configured without an ability to
run external processes. Friendica requires this ability. Following are some notes
provided by one of our members.
> On my server I use the php protection system Suhosin [http://www.hardened-php.net/suhosin/].
> One of the things it does is to block certain functions like proc_open, as
> configured in `/etc/php5/conf.d/suhosin.ini`:
>
> suhosin.executor.func.blacklist = proc_open, ...
>
> For those sites like Friendica that really need these functions they can be
> enabled, e.g. in `/etc/apache2/sites-available/friendica`:
>
> <Directory /var/www/friendica/>
> php_admin_value suhosin.executor.func.blacklist none
> php_admin_value suhosin.executor.eval.blacklist none
> </Directory>
>
> This enables every function for Friendica if accessed via browser, but not for
> the cronjob that is called via php command line. I attempted to enable it for
> cron by using something like:
>
> */10 * * * * cd /var/www/friendica/friendica/ && sudo -u www-data /usr/bin/php \
> -d suhosin.executor.func.blacklist=none \
> -d suhosin.executor.eval.blacklist=none -f bin/worker.php
>
> This worked well for simple test cases, but the friendica-cron still failed
> with a fatal error:
>
> suhosin[22962]: ALERT - function within blacklist called: proc_open()
> (attacker 'REMOTE_ADDR not set', file '/var/www/friendica/friendica/boot.php',
> line 1341)
>
> After a while I noticed, that `bin/worker.php` calls further PHP script via `proc_open`.
> These scripts themselves also use `proc_open` and fail, because they are NOT
> called with `-d suhosin.executor.func.blacklist=none`.
>
> So the simple solution is to put the correct parameters into `config/local.config.php`:
>
> 'config' => [
> //Location of PHP command line processor
> 'php_path' => '/usr/bin/php -d suhosin.executor.func.blacklist=none \
> -d suhosin.executor.eval.blacklist=none',
> ],
>
> This is obvious as soon as you notice that the friendica-cron uses `proc_open`
> to execute PHP scripts that also use `proc_open`, but it took me quite some time to find that out.
> I hope this saves some time for other people using suhosin with function blacklists.
### Unable to create all mysql tables on MySQL 5.7.17 or newer
If the setup fails to create all the database tables and/or manual creation from
the command line fails, with this error:
ERROR 1067 (42000) at line XX: Invalid default value for 'created'
You need to adjust your my.cnf and add the following setting under the [mysqld]
section:
sql_mode = '';
After that, restart mysql and try again.

1
README.md
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@ -13,6 +13,7 @@ With Friendica, you can also fully interact with anyone on Twitter, post on Face
Join today and [get your Friendica profile!](https://dir.friendica.social/servers 'Join Friendica today!') Join today and [get your Friendica profile!](https://dir.friendica.social/servers 'Join Friendica today!')
Have a look at the documents shipped in the [doc](doc) folder for further information about installing and using Friendica .
### Friendica Screenshots ### Friendica Screenshots

253
doc/Install.md
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@ -1,5 +1,5 @@
Friendica Installation # Friendica Installation
===============
We've tried very hard to ensure that Friendica will run on commodity hosting platforms - such as those used to host Wordpress blogs and Drupal websites. We've tried very hard to ensure that Friendica will run on commodity hosting platforms - such as those used to host Wordpress blogs and Drupal websites.
We offer a manual and an automatic installation. We offer a manual and an automatic installation.
@ -11,18 +11,21 @@ Not every PHP/MySQL hosting provider will be able to support Friendica.
Many will. Many will.
But **please** review the requirements and confirm these with your hosting provider prior to installation. But **please** review the requirements and confirm these with your hosting provider prior to installation.
Also if you encounter installation issues, please let us know via the [helper](http://forum.friendi.ca/profile/helpers) or the [developer](https://forum.friendi.ca/profile/developers) forum or [file an issue](https://github.com/friendica/friendica/issues). ## Support
If you encounter installation issues, please let us know via the [helper](http://forum.friendi.ca/profile/helpers) or the [developer](https://forum.friendi.ca/profile/developers) forum or [file an issue](https://github.com/friendica/friendica/issues).
Please be as clear as you can about your operating environment and provide as much detail as possible about any error messages you may see, so that we can prevent it from happening in the future. Please be as clear as you can about your operating environment and provide as much detail as possible about any error messages you may see, so that we can prevent it from happening in the future.
Due to the large variety of operating systems and PHP platforms in existence we may have only limited ability to debug your PHP installation or acquire any missing modules - but we will do our best to solve any general code issues. Due to the large variety of operating systems and PHP platforms in existence we may have only limited ability to debug your PHP installation or acquire any missing modules - but we will do our best to solve any general code issues.
If you do not have a Friendica account yet, you can register a temporary one at [tryfriendica.de](https://tryfriendica.de) and join the forums mentioned above from there. If you do not have a Friendica account yet, you can register a temporary one at [tryfriendica.de](https://tryfriendica.de) and join the forums mentioned above from there.
The account will expire after 7 days, but you can ask the server admin to keep your account longer, should the problem not be resolved after that. The account will expire after 7 days, but you can ask the server admin to keep your account longer, should the problem not be resolved after that.
Before you begin: Choose a domain name or subdomain name for your server. ## Prerequisites
Put some thought into this.
While changing it after installation is supported, things still might break.
Requirements * Choose a domain name or subdomain name for your server. Put some thought into this. While changing it after installation is supported, things still might break.
--- * Setup HTTPS on your host.
### Requirements
* Apache with mod-rewrite enabled and "Options All" so you can use a local .htaccess file * Apache with mod-rewrite enabled and "Options All" so you can use a local .htaccess file
* PHP 7+ (PHP 7.1+ is recommended for performance and official support) * PHP 7+ (PHP 7.1+ is recommended for performance and official support)
@ -30,18 +33,20 @@ Requirements
* Curl, GD, PDO, MySQLi, hash, xml, zip and OpenSSL extensions * Curl, GD, PDO, MySQLi, hash, xml, zip and OpenSSL extensions
* The POSIX module of PHP needs to be activated (e.g. [RHEL, CentOS](http://www.bigsoft.co.uk/blog/index.php/2014/12/08/posix-php-commands-not-working-under-centos-7) have disabled it) * The POSIX module of PHP needs to be activated (e.g. [RHEL, CentOS](http://www.bigsoft.co.uk/blog/index.php/2014/12/08/posix-php-commands-not-working-under-centos-7) have disabled it)
* some form of email server or email gateway such that PHP mail() works * some form of email server or email gateway such that PHP mail() works
* Mysql 5.6+ or an equivalent alternative for MySQL (MariaDB, Percona Server etc.) * MySQL 5.6+ or an equivalent alternative for MySQL (MariaDB, Percona Server etc.)
* the ability to schedule jobs with cron (Linux/Mac) or Scheduled Tasks (Windows) (Note: other options are presented in Section 7 of this document.) * ability to schedule jobs with cron (Linux/Mac) or Scheduled Tasks (Windows)
* Installation into a top-level domain or sub-domain (without a directory/path component in the URL) is preferred. Directory paths will not be as convenient to use and have not been thoroughly tested. * installation into a top-level domain or sub-domain (without a directory/path component in the URL) is RECOMMENDED. Directory paths will not be as convenient to use and have not been thoroughly tested. This is REQUIRED if you wish to communicate with the Diaspora network.
* If your hosting provider doesn't allow Unix shell access, you might have trouble getting everything to work.
Optional **If your hosting provider doesn't allow Unix shell access, you might have trouble getting everything to work.**
---
For alternative server configurations (such as Nginx server and MariaDB database engine), refer to the [Friendica wiki](https://github.com/friendica/friendica/wiki).
### Optional
* PHP ImageMagick extension (php-imagick) for animated GIF support. * PHP ImageMagick extension (php-imagick) for animated GIF support.
* [Composer](https://getcomposer.org/) for a git install
Installation procedure ## Installation procedure
---
### Alternative Installation Methods ### Alternative Installation Methods
@ -49,20 +54,27 @@ This guide will walk you through the manual installation process of Friendica.
If this is nothing for you, you might be interested in If this is nothing for you, you might be interested in
* the [Friendica Docker image](https://github.com/friendica/docker) or * the [Friendica Docker image](https://github.com/friendica/docker) or
* how [install Friendica with YunoHost](https://github.com/YunoHost-Apps/friendica_ynh). * how to [install Friendica with YunoHost](https://github.com/YunoHost-Apps/friendica_ynh).
### Get Friendica ### Get Friendica
Unpack the Friendica files into the root of your web server document area. Unpack the Friendica files into the root of your web server document area.
If you are able to do so, we recommend using git to clone the source repository rather than to use a packaged tar or zip file.
If you copy the directory tree to your webserver, make sure that you also copy
`.htaccess-dist` - as "dot" files are often hidden and aren't normally copied.
**OR**
Clone the [friendica/friendica GitHub repository](https://github.com/friendica/friendica) and import dependencies.
This makes the software much easier to update. This makes the software much easier to update.
The Linux commands to clone the repository into a directory "mywebsite" would be The Linux commands to clone the repository into a directory "mywebsite" would be
git clone https://github.com/friendica/friendica.git -b master mywebsite git clone https://github.com/friendica/friendica.git -b master mywebsite
cd mywebsite cd mywebsite
bin/composer.phar install --no-dev bin/composer.phar install --no-dev
Make sure the folder *view/smarty3* exists and is writable by the webserver user, in this case `www-data` Make sure the folder *view/smarty3* exists and is writable by the webserver user, in this case *www-data*
mkdir view/smarty3 mkdir view/smarty3
chown www-data:www-data view/smarty3 chown www-data:www-data view/smarty3
@ -76,8 +88,6 @@ Clone the addon repository (separately):
git clone https://github.com/friendica/friendica-addons.git -b master addon git clone https://github.com/friendica/friendica-addons.git -b master addon
If you copy the directory tree to your webserver, make sure that you also copy .htaccess - as "dot" files are often hidden and aren't normally copied.
If you want to use the development version of Friendica you can switch to the develop branch in the repository by running If you want to use the development version of Friendica you can switch to the develop branch in the repository by running
git checkout develop git checkout develop
@ -85,7 +95,8 @@ If you want to use the development version of Friendica you can switch to the de
cd addon cd addon
git checkout develop git checkout develop
please be aware that the develop branch may break your Friendica node at any time. **Be aware that the develop branch is unstable and may break your Friendica node at any time.**
You should have a recent backup before updating.
If you encounter a bug, please let us know. If you encounter a bug, please let us know.
### Create a database ### Create a database
@ -94,15 +105,9 @@ Create an empty database and note the access details (hostname, username, passwo
Friendica needs the permission to create and delete fields and tables in its own database. Friendica needs the permission to create and delete fields and tables in its own database.
With newer releases of MySQL (5.7.17 or newer), you might need to set the sql_mode to '' (blank). Please check the [troubleshooting](#troubleshooting) section if running on MySQ 5.7.17 or newer.
Use this setting when the installer is unable to create all the needed tables due to a timestamp format problem.
In this case find the [mysqld] section in your my.cnf file and add the line :
sql_mode = '' ### Option A: Run the installer
Restart mysql and you should be fine.
### Option A: Run the manual installer
Point your web browser to the new site and follow the instructions. Point your web browser to the new site and follow the instructions.
Please note any error messages and correct these before continuing. Please note any error messages and correct these before continuing.
@ -111,9 +116,9 @@ If you need to specify a port for the connection to the database, you can do so
*If* the manual installation fails for any reason, check the following: *If* the manual installation fails for any reason, check the following:
* Does "config/local.config.php" exist? If not, edit config/local-sample.config.php and change the system settings. * Does `config/local.config.php` exist? If not, edit `config/local-sample.config.php` and change the system settings.
* Rename to `config/local.config.php`. * Rename to `config/local.config.php`.
* Is the database is populated? If not, import the contents of `database.sql` with phpmyadmin or the mysql command line. * Is the database populated? If not, import the contents of `database.sql` with phpmyadmin or the mysql command line.
At this point visit your website again, and register your personal account. At this point visit your website again, and register your personal account.
Registration errors should all be recoverable automatically. Registration errors should all be recoverable automatically.
@ -206,7 +211,7 @@ Navigate to the main Friendica directory and execute the following command:
### Prepare .htaccess file ### Prepare .htaccess file
Copy .htaccess-dist to .htaccess (be careful under Windows) to have working mod-rewrite again. If you have installed Friendica into a sub directory, like /friendica/ set this path in RewriteBase accordingly. Copy `.htaccess-dist` to `.htaccess` (be careful under Windows) to have working mod-rewrite again. If you have installed Friendica into a sub directory, like /friendica/ set this path in RewriteBase accordingly.
Example: Example:
@ -231,7 +236,17 @@ If there is any /.well-known/.htaccess file, it could interfere with this Friend
You should remove any RewriteRules from that file, or remove that whole file if appropriate. You should remove any RewriteRules from that file, or remove that whole file if appropriate.
It may be necessary to chmod the /.well-known/.htaccess file if you were not given write permissions by default. It may be necessary to chmod the /.well-known/.htaccess file if you were not given write permissions by default.
### Set up the worker ## Register the admin account
At this point visit your website again, and register your personal account with the same email as in the `config.admin_email` config value.
Registration errors should all be recoverable automatically.
If you get any *critical* failure at this point, it generally indicates the database was not installed correctly.
You might wish to delete/rename `config/local.config.php` to another name and drop all the database tables so that you can start fresh.
## Post Install Configuration
### (REQUIRED) Background tasks
Set up a cron job or scheduled task to run the worker once every 5-10 minutes in order to perform background processing. Set up a cron job or scheduled task to run the worker once every 5-10 minutes in order to perform background processing.
Example: Example:
@ -240,6 +255,8 @@ Example:
Change "/base/directory", and "/path/to/php" as appropriate for your situation. Change "/base/directory", and "/path/to/php" as appropriate for your situation.
#### cron job for Worker
If you are using a Linux server, run "crontab -e" and add a line like the If you are using a Linux server, run "crontab -e" and add a line like the
one shown, substituting for your unique paths and settings: one shown, substituting for your unique paths and settings:
@ -253,10 +270,24 @@ If it is not possible to set up a cron job then please activate the "frontend wo
Once you have installed Friendica and created an admin account as part of the process, you can access the admin panel of your installation and do most of the server wide configuration from there. Once you have installed Friendica and created an admin account as part of the process, you can access the admin panel of your installation and do most of the server wide configuration from there.
#### worker alternative: daemon
Otherwise, you’ll need to use the command line on your remote server and start the Friendica daemon (background task) using the following command:
cd /path/to/friendica; php bin/daemon.php start
Once started, you can check the daemon status using the following command:
cd /path/to/friendica; php bin/daemon.php status
After a server restart or any other failure, the daemon needs to be restarted.
This could be achieved by a cronjob.
### (RECOMMENDED) Logging & Log Rotation
At this point it is recommended that you set up logging and logrotation. At this point it is recommended that you set up logging and logrotation.
To do so please visit [Settings](help/Settings) and search the 'Logs' section for more information. To do so please visit [Settings](help/Settings) and search the 'Logs' section for more information.
### Set up a backup plan ### (RECOMMENDED) Set up a backup plan
Bad things will happen. Bad things will happen.
Let there be a hardware failure, a corrupted database or whatever you can think of. Let there be a hardware failure, a corrupted database or whatever you can think of.
@ -264,3 +295,155 @@ So once the installation of your Friendica node is done, you should make yoursel
The most important file is the `config/local.config.php` file. The most important file is the `config/local.config.php` file.
As it stores all your data, you should also have a recent dump of your Friendica database at hand, should you have to recover your node. As it stores all your data, you should also have a recent dump of your Friendica database at hand, should you have to recover your node.
### (OPTIONAL) Reverse-proxying and HTTPS
Friendica looks for some well-known HTTP headers indicating a reverse-proxy
terminating an HTTPS connection.
While the standard from RFC 7239 specifies the use of the `Forwarded` header.
Forwarded: for=192.0.2.1; proto=https; by=192.0.2.2
Friendica also supports a number on non-standard headers in common use.
X-Forwarded-Proto: https
Front-End-Https: on
X-Forwarded-Ssl: on
It is however preferable to use the standard approach if configuring a new server.
## Troubleshooting
### "System is currently unavailable. Please try again later"
Check your database settings.
It usually means your database could not be opened or accessed.
If the database resides on the same machine, check that the database server name is "localhost".
### 500 Internal Error
This could be the result of one of our Apache directives not being supported by your version of Apache. Examine your apache server logs.
You might remove the line "Options -Indexes" from the .htaccess file if you are using a Windows server as this has been known to cause problems.
Also check your file permissions. Your website and all contents must generally be world-readable.
It is likely that your web server reported the source of the problem in its error log files.
Please review these system error logs to determine what caused the problem.
Often this will need to be resolved with your hosting provider or (if self-hosted) your web server configuration.
### 400 and 4xx "File not found" errors
First check your file permissions.
Your website and all contents must generally be world-readable.
Ensure that mod-rewite is installed and working, and that your `.htaccess` file
is being used. To verify the latter, create a file `test.out` containing the
word "test" in the top directory of Friendica, make it world readable and point
your web browser to
http://yoursitenamehere.com/test.out
This file should be blocked. You should get a permission denied message.
If you see the word "test" your Apache configuration is not allowing your
`.htaccess` file to be used (there are rules in this file to block access to any
file with .out at the end, as these are typically used for system logs).
Make certain the `.htaccess` file exists and is readable by everybody, then look
for the existence of "AllowOverride None" in the Apache server configuration for your site.
This will need to be changed to "AllowOverride All".
If you do not see the word "test", your `.htaccess` is working, but it is likely
that mod-rewrite is not installed in your web server or is not working.
On most Linux flavors:
% a2enmod rewrite
% /etc/init.d/apache2 restart
Consult your hosting provider, experts on your particular Linux distribution or
(if Windows) the provider of your Apache server software if you need to change
either of these and can not figure out how. There is a lot of help available on
the web. Search "mod-rewrite" along with the name of your operating system
distribution or Apache package (if using Windows).
### Unable to write the file config/local.config.php due to permissions issues
Create an empty `config/local.config.php`file and apply world-write permission.
On Linux:
% touch config/local.config.php
% chmod 664 config/local.config.php
Retry the installation. As soon as the database has been created,
******* this is important *********
% chmod 644 config/local.config.php
### Suhosin issues
Some configurations with "suhosin" security are configured without an ability to
run external processes. Friendica requires this ability. Following are some notes
provided by one of our members.
> On my server I use the php protection system Suhosin [http://www.hardened-php.net/suhosin/].
> One of the things it does is to block certain functions like proc_open, as
> configured in `/etc/php5/conf.d/suhosin.ini`:
>
> suhosin.executor.func.blacklist = proc_open, ...
>
> For those sites like Friendica that really need these functions they can be
> enabled, e.g. in `/etc/apache2/sites-available/friendica`:
>
> <Directory /var/www/friendica/>
> php_admin_value suhosin.executor.func.blacklist none
> php_admin_value suhosin.executor.eval.blacklist none
> </Directory>
>
> This enables every function for Friendica if accessed via browser, but not for
> the cronjob that is called via php command line. I attempted to enable it for
> cron by using something like:
>
> */10 * * * * cd /var/www/friendica/friendica/ && sudo -u www-data /usr/bin/php \
> -d suhosin.executor.func.blacklist=none \
> -d suhosin.executor.eval.blacklist=none -f bin/worker.php
>
> This worked well for simple test cases, but the friendica-cron still failed
> with a fatal error:
>
> suhosin[22962]: ALERT - function within blacklist called: proc_open()
> (attacker 'REMOTE_ADDR not set', file '/var/www/friendica/friendica/boot.php',
> line 1341)
>
> After a while I noticed, that `bin/worker.php` calls further PHP script via `proc_open`.
> These scripts themselves also use `proc_open` and fail, because they are NOT
> called with `-d suhosin.executor.func.blacklist=none`.
>
> So the simple solution is to put the correct parameters into `config/local.config.php`:
>
> 'config' => [
> //Location of PHP command line processor
> 'php_path' => '/usr/bin/php -d suhosin.executor.func.blacklist=none \
> -d suhosin.executor.eval.blacklist=none',
> ],
>
> This is obvious as soon as you notice that the friendica-cron uses `proc_open`
> to execute PHP scripts that also use `proc_open`, but it took me quite some time to find that out.
> I hope this saves some time for other people using suhosin with function blacklists.
### Unable to create all mysql tables on MySQL 5.7.17 or newer
If the setup fails to create all the database tables and/or manual creation from
the command line fails, with this error:
ERROR 1067 (42000) at line XX: Invalid default value for 'created'
You need to adjust your my.cnf and add the following setting under the [mysqld]
section:
sql_mode = '';
After that, restart mysql and try again.