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<h1>Linux <span>Frequently Asked Questions</span></h1>
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<dt>How do I install XAMPP?</dt>
<dd>
<p>Choose your flavor for your linux OS, the 32-bit or 64-bit version.</p>
<p>Change the permissions to the installer</p>
<p><code>chmod 755 xampp-linux-*-installer.run</code></p>
<p>Run the installer</p>
<p><code>sudo ./xampp-linux-*-installer.run</code></p>
<p>That's all. XAMPP is now installed below the /opt/lampp directory.</p>
</dd>
<dt>Does XAMPP include MySQL or MariaDB?</dt>
<dd>
<p>Since XAMPP 5.5.30 and 5.6.14, XAMPP ships MariaDB instead of MySQL. The commands and tools are the same for both.</p>
</dd>
<dt>How do I start XAMPP?</dt>
<dd>
<p>To start XAMPP simply call this command:</p>
<p><code>sudo /opt/lampp/lampp start</code></p>
<p>You should now see something like this on your screen:</p>
<p><code>Starting XAMPP 1.8.2...<br />
LAMPP: Starting Apache...<br />
LAMPP: Starting MySQL...<br />
LAMPP started.<br /><br />
Ready. Apache and MySQL are running.</code></p>
<p>If you get any error messages visit <a href="/community.html">our community pages</a> for help.</p>
<p>Also, note that there is a graphical tool that you can use to manage your servers easily. You can start this tool with the following commands:</p>
<p><code>cd /opt/lampp<br>
sudo ./manager-linux.run (or manager-linux-x64.run)</code></p>
</dd>
<dt>How do I stop XAMPP?</dt>
<dd>
<p>To stop XAMPP simply call this command:</p>
<p><code>sudo /opt/lampp/lampp stop</code></p>
<p>You should now see something like this on your screen:</p>
<p><code>Stopping XAMPP 1.8.2...<br />
LAMPP: Stopping Apache...<br />
LAMPP: Stopping MySQL...<br />
LAMPP stopped.<br /><br /></code></p>
<p>If you get any error messages visit <a href="/community.html">our community pages</a> for help.</p>
<p>Also, note that there is a graphical tool that you can use to start/stop your servers easily. You can start this tool with the following commands:</p>
<p><code>cd /opt/lampp<br>
sudo ./manager-linux.run (or manager-linux-x64.run)</code></p>
</dd>
<dt>How can I test that everything worked?</dt>
<dd>
<p>Type in the following URL at your favourite web browser:</p>
<p><code>http://localhost</code></p>
<p>Now you should see the XAMPP start page.</p>
<img src="/dashboard/images/screenshots/xampp-linux-start.jpg" />
</dd>
<dt>Is XAMPP production ready?</dt>
<dd>
<p>XAMPP is not meant for production use but only for development environments. The way XAMPP is configured is to be open as possible to allow the developer anything he/she wants. For development environments this is great but in a production environment it could be fatal.</p>
<p>Here a list of missing security in XAMPP:</p>
<ol>
<li>The MySQL administrator (root) has no password.</li>
<li>The MySQL daemon is accessible via network.</li>
<li>ProFTPD uses the password "lampp" for user "daemon".</li>
<li>PhpMyAdmin is accessible via network.</li>
<li>Examples are accessible via network.</li>
</ol>
<p>To fix most of the security weaknesses simply call the following command:</p>
<p><code>sudo /opt/lampp/lampp security</code></p>
<p>It starts a small security check and makes your XAMPP installation secure. For example this protects the XAMPP demo pages by a username ('lampp') and password combination.</p>
</dd>
<dt>What is the meaning of the error messages I see when starting XAMPP?</dt>
<dd>
<p>You may get several error messages while starting XAMPP:</p>
<p><code>LAMPP-Apache is already running.<br />
An Apache daemon is already running.</code></p>
<p>The LAMPP startup script did not start XAMPP-Apache because there is an Apache instance already running. To start XAMPP properly, first you have to stop this daemon.</p>
<p><code>LAMPP-MySQL is already running.<br />
A MySQL daemon is already running.</code></p>
<p>Mostly due to the same reasons as the above error, the LAMPP startup script found a MySQL daemon already running on your system. To start LAMPP properly, you have to stop this daemon first.</p>
</dd>
<dt>Apache doesn't seems to start. What can I do? </dt>
<dd>
<p>This error can exist for multiple reasons. Apache displays this error under several circumstances. To find the exact reason we have to do some research:</p>
<p><code>tail -2 /opt/lampp/logs/error_log</code></p>
<p>If you get any error messages visit <a href="/community.html">our community pages</a> for help.</p>
</dd>
<dt>What do I do if the error message is "Cannot restore segment prot after reloc: Permission denied?"</dt>
<dd>
<p>Some Linux distributions have SELinux activated by default and this is preventing the successful start of XAMPP. You should disable it in order to start the XAMPP servers:</p>
<p><code>sudo /usr/sbin/setenforce 0</code></p>
<p>Now XAMPP should work fine again.</p>
</dd>
<dt>After I rebooted my Linux box XAMPP stopped running! How can I fix this?</dt>
<dd>
<p>Correct. That's normal Linux behaviour (which applies to any other Unix-like system). It's the admin's job to make sure a particular application is started at bootup.</p>
<p>There is no real standard way to configure the boot process of a Linux system, but most of them should allow you to start XAMPP at boot time using the following steps.</p>
<p><strong>Debian, Ubuntu.</strong> </p>
<p><code>sudo ln -s /opt/lampp/lampp /etc/init.d/lampp</br>
sudo update-rc.d lampp start 80 2 3 4 5 . stop 30 0 1 6 .</code></p>
<p><strong>RedHat, Fedora, CentOS.</strong> If your Linux distro uses "chkconfig" tool to install the services you can run the following commands:</p>
<p><code>sudo ln -s /opt/lampp/lampp /etc/init.d/lampp<br/>
sudo chkconfig --add lampp</code></p>
<p><strong>SUSE</strong></p>
<p><code>sudo ln -s /opt/lampp/lampp /etc/init.d/lampp</br>
sudo chkconfig lampp 2345</code></p>
</dd>
<dt>How can I make my XAMPP installation more secure?</dt>
<dd>
<p>In the default installation, XAMPP has no passwords set and it is not recommended to run XAMPP with this configuration accessible by others.</p>
<p>Simply type the following command (as root) to start a simple security check:</p>
<p><code>sudo /opt/lampp/lampp security</code></p>
<p>Now you should see the following dialog on your screen:</p>
<p><code>
XAMPP: Quick security check...</br>
XAMPP: Your XAMPP pages are NOT secured by a password.</br>
XAMPP: Do you want to set a password? [yes] yes (1)</br>
XAMPP: Password: ******</br>
XAMPP: Password (again): ******</br>
XAMPP: Password protection active. Please use 'lampp' as user name!</br>
XAMPP: MySQL is accessable via network.</br>
XAMPP: Normaly that's not recommended. Do you want me to turn it off? [yes] yes</br>
XAMPP: Turned off.</br>
XAMPP: Stopping MySQL...</br>
XAMPP: Starting MySQL...</br>
XAMPP: The MySQL/phpMyAdmin user pma has no password set!!!</br>
XAMPP: Do you want to set a password? [yes] yes</br>
XAMPP: Password: ******</br>
XAMPP: Password (again): ******</br>
XAMPP: Setting new MySQL pma password.</br>
XAMPP: Setting phpMyAdmin's pma password to the new one.</br>
XAMPP: MySQL has no root passwort set!!!</br>
XAMPP: Do you want to set a password? [yes] yes</br>
XAMPP: Write the passworde somewhere down to make sure you won't forget it!!!</br>
XAMPP: Password: ******</br>
XAMPP: Password (again): ******</br>
XAMPP: Setting new MySQL root password.</br>
XAMPP: Setting phpMyAdmin's root password to the new one.</br>
XAMPP: The FTP password for user 'nobody' is still set to 'lampp'.</br>
XAMPP: Do you want to change the password? [yes] yes</br>
XAMPP: Password: ******</br>
XAMPP: Password (again): ******</br>
XAMPP: Reload ProFTPD...</br>
XAMPP: Done.</br>
</code></p>
<p>(1) Setting a password will protect the XAMPP demo pages (http://localhost/xampp/) using this password. The user name is 'lampp'!</p>
<p>After calling this command your XAMPP installation should be more secure.</p>
</dd>
<dt>How do I activate eAccelerator?</dt>
<dd>
<p>To activate eAccelerator simply find the following lines in your /opt/lampp/etc/php.ini:</p>
<p><code>;extension="eaccelerator.so"</br>
;eaccelerator.shm_size="16"</br>
;eaccelerator.cache_dir="/opt/lampp/tmp/eaccelerator"</br>
;eaccelerator.enable="1"</br>
;eaccelerator.optimizer="1"</br>
;eaccelerator.check_mtime="1"</br>
;eaccelerator.debug="0"</br>
;eaccelerator.filter=""</br>
;eaccelerator.shm_max="0"</br>
;eaccelerator.shm_ttl="0"</br>
;eaccelerator.shm_prune_period="0"</br>
;eaccelerator.shm_only="0"</br>
;eaccelerator.compress="1"</br>
;eaccelerator.compress_level="9"</code></p>
<p>Remove the semicolon at the beginning of each line and restart XAMPP. eAccelerator is now active. For more information about eAccelerator, check the eAccelerator home page: <a href="http://eaccelerator.net">http://eaccelerator.net</a>.</p>
</dd>
<dt>How do I activate the OCI8/Oracle extension for PHP?</dt>
<dd>
<p>To activate the OCI8/Oracle extension for PHP please execute the following command:</p>
<p><code>sudo /opt/lampp/lampp oci8</code></p>
<p>The following dialog will start:</p>
<p><code>Please enter the path to your Oracle or Instant Client installation:</br>
[/opt/lampp/lib/instantclient-11.2.0.3.0] </br>
installing symlinks...</br>
patching php.ini...</br>
OCI8 add-on activation likely successful.</br>
LAMPP: Stopping Apache with SSL...</br>
LAMPP: Starting Apache with SSL...</code></p>
<p>Now the extension should be active.</p>
</dd>
<dt>XAMPP runs, but why are none of the images being displayed?</dt>
<dd>
<p>That's a special problem with some Linux systems. Please open your /opt/lampp/etc/httpd.conf and look for these two lines:</p>
<p><code>#EnableMMAP off</br>
#EnableSendfile off</code></p>
<p>Remove the # in both lines and restart your Apache. Your images should be back.</p>
</dd>
<dt>How do I enable access to phpMyAdmin from the outside?</dt>
<dd>
<p>In the basic configuration of XAMPP, phpMyAdmin is accessible only from the same host that XAMPP is running on, at http://127.0.0.1 or http://localhost.</p>
<p>To enable remote access to phpMyAdmin, follow these steps:</p>
<ul>
<li>Edit the etc/extra/httpd-xampp.conf file in your XAMPP installation directory.</li>
<li>Within this file, find the line below and update it to remove 'phpmyadmin' from the list of locations.
<p><code>
<LocationMatch "^/(?i:(?:xampp|security|licenses|phpmyadmin|webalizer|server-status|server-info))"></code></p>
</li>
<li>Restart the Apache server using the XAMPP control panel.</li>
</ul>
</dd>
<dt>How do I backup/restore my XAMPP system?</dt>
<dd>
<p><strong>Warning:</strong> The backup and restore functionality is still under development and may not work correctly.</p>
<p>You can create the backup by calling:</p>
<p><code>sudo /opt/lampp/lampp backup</code></p>
<p>or</p>
<p><code>sudo /opt/lampp/lampp backup secret</code></p>
<p>Where "secret" is your MySQL root password. This command will create the following output:</p>
<p><code>Backing up databases...</br>
Backing up configuration, log and htdocs files...</br>
Calculating checksums...</br>
Building final backup file...</br>
Backup finished.</br>
Take care of /opt/lampp/backup/xampp-backup-22-01-14.sh</code></p>
<p>The file /opt/lampp/backup/xampp-backup-22-01-14.sh (in the example above) contains your backup data. Store this file in a safe place.</p>
<p>On the new machine you need the same version of XAMPP as on your original/source machine.</p>
<p><code>sudo sh xampp-backup-22-01-14.sh</code></p>
<p>You should see something like this:</p>
<p><code>Checking integrity of files...</br>
Restoring configuration, log and htdocs files...</br>
Checking versions...</br>
Installed: XAMPP 1.4.2</br>
Backup from: XAMPP 1.4.2</br>
Restoring MySQL databases...</br>
Restoring MySQL user databases...</br>
Backup complete. Have fun!</br>
You may need to restart XAMPP to complete the restore.</br>
</code></p>
<p>That's all. Keep in mind that it's a beta feature.</p>
</dd>
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