Update Installation

Installation.md

@@ -45,6 +45,38 @@ For translating the web interface, see the [README](https://gitlab.com/ruany/lit
 
 If you want to customize the English messages, you can edit [lang/en_US.utf8.php](https://gitlab.com/ruany/litebans-php/blob/master/lang/en_US.utf8.php).
 
+## SSL
+Note: "When running a PHP version before 7.1.16, or PHP 7.2 before 7.2.4, set MySQL 8 Server's default password plugin to 
+_mysql_native_password_ or else you will see errors similar to _The server requested authentication method unknown to the client [caching_sha2_password]_ even when caching_sha2_password is not used."
+
+(from https://dev.mysql.com/doc/connectors/en/apis-php-pdo-mysql.html)
+
+To enable SSL, find this section in settings.php:
+```
+            $options = array(
+                PDO::ATTR_TIMEOUT            => 5,
+                PDO::ATTR_ERRMODE            => PDO::ERRMODE_EXCEPTION,
+                PDO::ATTR_EMULATE_PREPARES   => false,
+                PDO::MYSQL_ATTR_INIT_COMMAND => "SET NAMES utf8",
+            );
+```
+Change it to:
+```
+            $options = array(
+                PDO::ATTR_TIMEOUT            => 5,
+                PDO::ATTR_ERRMODE            => PDO::ERRMODE_EXCEPTION,
+                PDO::ATTR_EMULATE_PREPARES   => false,
+                PDO::MYSQL_ATTR_INIT_COMMAND => "SET NAMES utf8",
+                PDO::MYSQL_ATTR_SSL_VERIFY_SERVER_CERT => false,
+                PDO::MYSQL_ATTR_SSL_KEY                => '/etc/mysql/client-key.pem',
+                PDO::MYSQL_ATTR_SSL_CERT               => '/etc/mysql/client-cert.pem',
+                PDO::MYSQL_ATTR_SSL_CA                 => '/etc/mysql/cacert.pem',
+            );
+```
+Ensure that all of the paths are correct (client key, client certificate, and CA) as they might differ on your system.
+
+Use the paths for the client key/certificate rather than the server key/certificate as these are two separate things.
+
 ## Troubleshooting
 
 If bans don't show up: