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deb12:lamp [2024/04/22 15:27] – [Installation] Bernard Condraudeb12:lamp [2024/05/23 06:25] (current) – [Links] Bernard Condrau
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-====== Apache 2.4 and PHP 5/7 ======+====== LAMP on Debian 12 ======
 ===== Apache 2.4 Installation ===== ===== Apache 2.4 Installation =====
   - Install apache 2.4<code>$ sudo apt update   - Install apache 2.4<code>$ sudo apt update
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   - Create sub folders in ''/var/log/apache2'' if you setup log files for the virtual hosts in sub folders   - Create sub folders in ''/var/log/apache2'' if you setup log files for the virtual hosts in sub folders
   - Install and configure [[deb11:certbot|Let's Encrypt Certbot]]   - Install and configure [[deb11:certbot|Let's Encrypt Certbot]]
 +
 +==== Settings ====
 +  * Harden apache
 +    * change //ServerTokens// and //ServerSignature// in /etc/apache2/conf.d/security.conf
 +    * add //Require all granted// to your web space, possibly exclude black listed ip addresses, and restrict access to phpmyadmin etc. Put a respective conf file into /etc/apache2/conf.d. 
 +  * ''MaxRequestedWorkers'': modify /etc/apache2/mods-available/mdm-prefork.conf and restart apache2<code>$ sudo apache2ctl -V | grep MPM
 +vim /etc/apache2/mods-available/mdm-prefork.conf
 +  MaxRequestedWorkers 400
 +  ServerLimit 400
 +$ sudo service apache2 restart</code>
 +
 +==== Links ====
 +  * [[https://community.letsencrypt.org/t/multiple-servers-one-ip-address-home-setup-issue/64210|Multiple servers one IP address]]
 +  * [[https://stackoverflow.com/questions/2364840/what-is-the-size-limit-of-a-post-request|What is the size limit of a post request?]]
 +  * [[https://confluence.jaytaala.com/display/TKB/Securing+Apache+and+blocking+a+list+of+ip+addresses|Securing Apache and blocking a list of ip addresses]]
 +  * [[https://support.plesk.com/hc/en-us/articles/214529205--Apache-keeps-going-down-on-a-Plesk-server-server-reached-MaxRequestWorkers-setting|Apache keeps going down on a Plesk server: server reached MaxRequestWorkers setting]]
  
 ===== PHP Installation ===== ===== PHP Installation =====
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 $ sudo a2enmod proxy_http $ sudo a2enmod proxy_http
 $ sudo a2enmod rewrite</code> $ sudo a2enmod rewrite</code>
 +
 +==== Settings ====
 +  * ''php.ini'' for production:<code>max_execution_time = 120
 +max_input_vars = 2000
 +memory_limit = 512M
 +post_max_size = 32M
 +sys_temp_dir = "/tmp"
 +upload_tmp_dir = "/tmp"
 +upload_max_filesize = 16M
 +date.timezone = Asia/Bangkok</code>
 +  * ''php.ini'' for development:<code>output_buffering=off
 +short_open_tag = On
 +max_execution_time=120
 +max_input_time=150
 +max_input_vars = 2000
 +memory_limit = 512M
 +error_reporting=E_ALL & ~E_DEPRECATED & ~E_STRICT
 +display_errors=On
 +post_max_size = 32M
 +sys_temp_dir = "/tmp"
 +upload_tmp_dir = "/tmp"
 +upload_max_filesize=128M
 +date.timezone=Asia/Bangkok</code>
 +  * Check ini files
 +    * apache2: load a php file with the following content<file><?php phpinfo();?></file>
 +    * cli:<file>php --ini</file>
 +
 +==== Links ====
 +  * [[https://deb.sury.org/|DEB.SURY.ORG]]
 +  * [[https://www.php.net/manual/en/configuration.file.php|php.net - The configuration file]]
   * [[https://opensource.com/article/22/9/deprecated-linux-apt-key|Fix the apt-key deprecation error in Linux]]   * [[https://opensource.com/article/22/9/deprecated-linux-apt-key|Fix the apt-key deprecation error in Linux]]
 +  * [[https://www.howtoforge.com/how-to-specify-a-custom-php.ini-for-a-website-apache2-with-mod_php|How To Specify A Custom php.ini For A Web Site]]
  
 ===== PHP Extensions ===== ===== PHP Extensions =====
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   - Check PHP apache2 Version: call phpinfo(); in a script   - Check PHP apache2 Version: call phpinfo(); in a script
   - Once you have installed a required extension, use the below command to verify it<code>php -m | grep -i mysql</code>   - Once you have installed a required extension, use the below command to verify it<code>php -m | grep -i mysql</code>
-  * [[https://tecadmin.net/switch-between-multiple-php-version-on-debian/|How to Switch between Multiple PHP Version on Debian 9]] 
  
-===== Settings ===== +==== Links ==== 
-==== Harden apache ==== +  * [[https://tecadmin.net/switch-between-multiple-php-version-on-debian/|How to Switch between Multiple PHP Version on Debian 12/11/10]] 
-  * change //ServerTokens// and //ServerSignature// in /etc/apache2/conf.d/security.conf +  * [[https://tecadmin.net/install-multiple-php-version-with-apache-on-debian/|How to Install Multiple PHP Version with Apache on Debian 11/10]]
-  * add //Require all granted// to your web space, possibly exclude black listed ip addresses, and restrict access to phpmyadmin etc. Put a respective conf file into /etc/apache2/conf.d.+
  
-==== Check ini files ==== 
-  * apache2: load a php file with the following content<code><?php phpinfo();?></code> 
-  * cli:<code>php --ini</code> 
- 
-==== php.ini ==== 
-  * <code>max_execution_time = 120 
-max_input_vars = 2000 
-memory_limit = 512M 
-post_max_size = 32M 
-sys_temp_dir = "/tmp" 
-upload_tmp_dir = "/tmp" 
-upload_max_filesize = 16M 
-date.timezone = Asia/Bangkok</code> 
 ===== Xdebug ===== ===== Xdebug =====
   - Open terminal and write following command:<code>php -i > /var/www/html/php_info.txt</code>   - Open terminal and write following command:<code>php -i > /var/www/html/php_info.txt</code>
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 make</code> make</code>
   - Copy the module to:<code>sudo cp modules/xdebug.so /usr/lib/php/20230831</code>   - Copy the module to:<code>sudo cp modules/xdebug.so /usr/lib/php/20230831</code>
-  - Modify the configuration in /etc/php/{7.2, 7.4}/cli/php.ini for Xdebug 2:<file>zend_extension = /usr/lib/php/20230831/xdebug.so+  - Add the configuration in a new file to ''/etc/php/<V.v>/[apache2|cli]/conf.d/80-xdebug.ini'' (V.v is the php version, e.g. ''8.3''): 
 +    * <color red>**Xdebug 2 config**</color><code>zend_extension = /usr/lib/php/20230831/xdebug.so
 xdebug.remote_enable=1 xdebug.remote_enable=1
-xdebug.remote_port=9000 (default: 9000) 
 xdebug.profiler_enable=0  xdebug.profiler_enable=0 
 xdebug.profiler_enable_trigger=1 xdebug.profiler_enable_trigger=1
-xdebug.profiler_output_dir=PATH_TO_PROFILER_OUTPUT_DIR +xdebug.trace_output_dir=PATH_TO_OUTPUT 
-xdebug.remote_log=PATH_TO_LOG/xdebug.log</file> +xdebug.profiler_output_dir=PATH_TO_OUTPUT 
-    - Change the PATH_TO_PROFILER_OUTPUT_DIR to point to the directory you want to receive profiler output. change PATH_TO_LOG to point to the directory where you want to receive xdebug.log. +xdebug.gc_stats_output_dir=PATH_TO_OUTPUT 
-    - Make sure that zend_extension = /usr/lib/php/20230831/xdebug.so is below the line for OPcache. Please also update php.ini files in adjacent directories (//apache2// and //cli//), as your system might be configured with a separate php.ini file for the web server and command line. +xdebug.remote_log=PATH_TO_LOG/xdebug.log 
-  - Restart your webserver. +xdebug.remote_port=9000 
-  - Create a PHP page that has phpinfo(). Load it in a browser and look for the info on the Xdebug module. If you see it next to the Zend logo, you have been successful! +xdebug.remote_host=127.0.0.1</code> 
-  - On the command line, you can also ''php -m''. This lists all loaded modules. Xdebug should appear twice there (once under 'PHP Modules' and once under 'Zend Modules').+    * <color red>**Xdebug 3 config**</color><code>zend_extension = /usr/lib/php/20230831/xdebug.so 
 +xdebug.mode=debug,develop 
 +xdebug.start_with_request=trigger 
 +xdebug.start_upon_error=no 
 +xdebug.output_dir=PATH_TO_OUTPUT 
 +xdebug.log=/PATH/TO/LOG/xdebug.log 
 +xdebug.log_level=10 
 +xdebug.var_display_max_children=-1 
 +xdebug.var_display_max_data=-1 
 +xdebug.var_display_max_depth=-1 
 +xdebug.client_port=9003 
 +xdebug.client_host=127.0.0.1</code> 
 +  - ''PATH_TO_OUTPUT'' and ''PATH_TO_LOG'' must be writable for the php process (apache or cli) 
 +  - Make sure the xdebug configuration is loaded last (e.g., ''zend_extension'' directive must be below the line for OPcache) 
 +  - Also update php.ini files in adjacent directories (//apache2// and //cli//), as your system might be configured with a separate php.ini file for the web server and command line. 
 +  - Read [[#wsl_windows_subsystem_for_linux|WSL (Windows Subsystem for Linux)]] if you are running your LAMP server inside WSL 
 +  - Read [[https://xdebug.org/docs/upgrade_guide|Upgrading from Xdebug 2 to 3]] if you are upgrading 
 +  - Restart your webserver after configuration changes 
 +  - Create a PHP page with ''<?php phpinfo(); ?>''. Load it in a browser and look for the info on the Xdebug module. If you see it next to the Zend logo, you have been successful! 
 +  - Create a PHP page with ''<?php xdebug_info(); ?>''. Load it in a browser to verify the Xdebug configuration 
 +  - On the command line, you can also ''php -m''. This lists all loaded modules. Xdebug should appear twice there (once under 'PHP Modules' and once under 'Zend Modules') 
 + 
 +==== Links ==== 
 +  * [[https://xdebug.org/docs/install|Xdebug: Installation]] 
 +  * [[https://xdebug.org/docs/all_settings|Xdebug: all settings]] 
 +  * [[https://xdebug.org/docs/upgrade_guide|Upgrading from Xdebug 2 to 3]]
  
 ===== MariaDB 10.11.6 Installation ===== ===== MariaDB 10.11.6 Installation =====
-  * Install<code>$ sudo apt install mariadb-server</code>+  - Install<file>$ sudo apt install mariadb-server</file> 
 +  - Start MariaDB<file>$ sudo service mariadb start</file> 
 +  - Secure the installation following [[https://linuxgenie.net/how-to-install-mariadb-on-debian-12-bookworm-distribution/|How to Install MariaDB on Debian 12 Bookworm Distribution]]<file>$ sudo mariadb-secure-installation</file> 
 +  - Assign a password to root 
 +  - Dump all databases on the old server<file>$ sudo mysqldump --all-databases > sql_file.sql</file> 
 +  - Copy ''sql_file.sql'' to the new server and remove databases ''mysql'' and ''phpmyadmin'' from the dump file, then import with<file>$ sudo mysql < sql_file.sql</file>
  
 ===== phpMyAdmin ===== ===== phpMyAdmin =====
   * [[deb11:phpmyadmin|phpMyAdmin]]   * [[deb11:phpmyadmin|phpMyAdmin]]
-Debian 10/11, other than Debian 9, require manual installation of phpmyadmin, phpmyadmin has been removed from Debian's repositories. 
  
-==== Configuration ==== +===== WSL (Windows Subsystem for Linux) =====
-  * To begin, make a new directory where phpMyAdmin will store its temporary files and set ownership:<code>sudo mkdir -p /var/lib/phpmyadmin/tmp +
-sudo chown -R www-data:www-data /var/lib/phpmyadmin</code> +
-  * In the same folder, create a file with the blowfish secret passphrase and set permissions:<code>sudo vim /var/lib/phpmyadmin/blowfish_secret.inc.php +
-<?php +
-$cfg['blowfish_secret'] = '32-CHAR-LONG-SECRET-KEY'; +
-<ESC>:wq +
-sudo chown root:www-data /var/lib/phpmyadmin/blowfish_secret.inc.php +
-sudo chmod 640 /var/lib/phpmyadmin/blowfish_secret.inc.php</code> +
-  * Copy folder {{:deb9:phpmyadmin.zip|phpmyadmin}} from a Debian 9 installation to /etc. Check the **apache.conf** file and remove path elements in //php_admin_value open_basedir// which do not exist in your system. +
-  * Symlink the configuration files for apache:<code>cd /etc/apache2/conf-available +
-ln -s ../../phpmyadmin/apache.conf phpmyadmin.conf +
-cd ../conf-enabled +
-ln -s ../conf-available/phpmyadmin.conf phpmyadmin.conf</code> +
-  * Symlink the configuration files for phpmyadmin in it's root folder:<code>cd /usr/share/phpmyadmin +
-ln -s /etc/phpmyadmin/config.inc.php config.inc.php +
-ln -s /etc/phpmyadmin/config.header.inc.php config.header.inc.php +
-ln -s /etc/phpmyadmin/config.footer.inc.php config.footer.inc.php</code> +
-  * Create a additional config file with the path to the **tmp** directory:<code>vim /etc/phpmyadmin/conf.d/tempdir.php +
-<?php +
-$cfg['TempDir'] = '/var/lib/phpmyadmin/tmp';</code> +
-  * Make sure the //phpmyadmin// user has been created in mysql:<code>mysql -u <my-admin-user> -p +
-SELECT user,host FROM mysql.user; +
-CREATE USER 'user'@'localhost' IDENTIFIED BY 'password'; +
-GRANT USAGE ON phpmyadmin.* TO phpmyadmin</code> +
-  * The password is in file /etc/phpmyadmin/config-db.php. Restrict permissions of that file as it contains a password:<code>sudo chown root:www-data /etc/phpmyadmin/config-db.php +
-sudo chmod 640 /etc/phpmyadmin/config-db.php</code> +
-  * Create a regular MariaDB user for the purpose of managing databases through phpMyAdmin, as it’s recommended that you log in using another account than the pma user. You could create a user that has privileges to all tables within the database, as well as the power to add, change, and remove user privileges, with this command. Whatever privileges you assign to this user, be sure to give it a strong password as well:<code>sudo mariadb +
-GRANT ALL PRIVILEGES ON *.* TO 'user'@'localhost' IDENTIFIED BY 'password' WITH GRANT OPTION; +
-exit</code> +
-  * [[https://docs.phpmyadmin.net/en/latest/config.html|phpMyAdmin Configuration]] +
-==== Security ==== +
-  * You should secure access to phpmyadmin, for example by limiting access to verified ip addresses +
-===== Windows Subsystem for Linux =====+
   * For Windows Subsystem for Linux, create a **Virtual Host** file with document root in ///mnt/<drive>/htdocs// or similar, if you need to access it through the Windows file system.   * For Windows Subsystem for Linux, create a **Virtual Host** file with document root in ///mnt/<drive>/htdocs// or similar, if you need to access it through the Windows file system.
   * You should set the apache user to the one who owns the files in the document root, which helps avoiding problems with permissions on the Windows NTFS file system:<code>export APACHE_RUN_USER=<user>   * You should set the apache user to the one who owns the files in the document root, which helps avoiding problems with permissions on the Windows NTFS file system:<code>export APACHE_RUN_USER=<user>
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 icacls X:\FULL_PATH_TO_FOLDER /grant Administrators:F /t</code> icacls X:\FULL_PATH_TO_FOLDER /grant Administrators:F /t</code>
  
-===== apache2 settings ===== +==== WSL1 with Xdebug ==== 
-==== MaxRequestedWorkers ==== +  * WSL1 runs networking in ''bridged'' mode 
-Modify /etc/apache2/mods-available/mdm-prefork.conf and restart apache2<code>$ sudo apache2ctl -V | grep MPM +  * You do not need to set ''xdebug.client_host'' (Xdebug2: ''xdebug.remote_host'') 
-vim /etc/apache2/mods-available/mdm-prefork.conf +  * Will work with default configuration settings 
-  MaxRequestedWorkers 400 +==== WSL2 (NAT) ==== 
-  ServerLimit 400 +  * WSL2 set to ''NAT'' networking mode (default) 
-$ sudo service apache2 restart</code>+  * Your Linux box runs within a Hyper-V Virtual Machine 
 +  * You can access the Windows host through the IP address stored in ''/etc/resolv.conf'' 
 +  * ''xdebug.client''_host must be configured to use this IP address. Separate the directive from the xdebug settings by copying it into a separate file to be loaded after the xdebug settings, then run a script to update this IP address before starting or restarting the LAMP server:<code>#!/bin/bash 
 +IP=$(ip route show | grep -i default | awk '{ print $3}') 
 +INI="/home/bco/conf/xdebug.host.ini" 
 +echo -e "[Xdebug]" > $INI 
 +echo -e "xdebug.client_host=$IP" >> $INI</code> 
 +  * Check the xdebug logfile with ''tail -f /path/to/log/xdebug.log'' until this is working properly
  
 +=== Windows host IP address ===
 +  * Alternatively you could use the Windows host IP address (feasible if it remains the same through re-boots) in which case you need to add a firewall rule to allow access through the xdebug port. Command to run in an elevated PowerShell:<code>New-NetFirewallRule -DisplayName "xdebug" -InterfaceAlias "vEthernet (WSL (Hyper-V firewall))" -Direction Inbound -Protocol TCP -LocalPort 9003 -Action Allow</code>
 +  * Commands to check or remove the firewall rule:<code>Get-NetFirewallRule -DisplayName "xdebug"
 +Remove-NetFirewallRule -DisplayName "xdebug"</code>
  
 +==== WSL2 (mirrored) ====
 +  * WSL2 set to ''mirrored'' networking mode
 +  * This networking mode is available for Windows 11  23H2 and later
 +  * To enabled ''mirrored'' mode, save the following content as file ''.wslconfig'' into folder ''C:\Users\<user>'' on your Windows host<file>[wsl2]
 +networkingMode=mirrored</file>
 +  * Your Linux box runs within a Hyper-V Virtual Machine
 +  * You can access the Windows host through the IP address ''127.0.0.1'', no firewall rule is necessary
 +  * ''xdebug.client''_host must be configured to use this IP address
 +  * Check the xdebug logfile with ''tail -f /path/to/log/xdebug.log'' until this is working properly
 +  * Note that WSL in ''mirrored'' mode is less secure and can be directly accessed from your LAN
 ==== Links ==== ==== Links ====
-  * [[https://community.letsencrypt.org/t/correct-steps-to-add-another-domain-to-existing-certificate/64654/2|Correct steps to add another domain to existing certificate]] +  * [[https://gist.github.com/SomajitDey/68e8cd639e3bf592bded035630cf86ec|How to forward WSL2 port to Windows port and vice versa]] 
-  * [[https://websiteforstudents.com/revoking-lets-encrypt-certificates-on-ubuntu-18-04-16-04/|Revoking Let’s Encrypt Certificates]] +
-  * [[https://medium.com/@mhagemann/correct-way-to-delete-a-certbot-ssl-certificate-e8ee123e6e01|Correct Way to Delete a Certbot SSL Certificate]] +
-  * [[https://webmasters.stackexchange.com/questions/126557/what-is-the-difference-of-certbot-and-certbot-auto|What is the difference of certbot and certbot-auto?]] +
-  * [[https://www.jesusamieiro.com/remove-revoke-a-domain-in-lets-encrypt/|Remove a domain in Let’s Encrypt]]+
 ===== SSL for localhost ===== ===== SSL for localhost =====
 ==== Ignore invalid certificates ==== ==== Ignore invalid certificates ====
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     * You can check the domain names included in the original certificate:<code>openssl x509 -text < $CERT_FILE</code>     * You can check the domain names included in the original certificate:<code>openssl x509 -text < $CERT_FILE</code>
  
-=== Links ===+==== Links ==== 
 +  * [[https://www.sslshopper.com/ssl-checker.html|SSL Checker]] 
 +  * [[https://community.letsencrypt.org/t/correct-steps-to-add-another-domain-to-existing-certificate/64654/2|Correct steps to add another domain to existing certificate]] 
 +  * [[https://websiteforstudents.com/revoking-lets-encrypt-certificates-on-ubuntu-18-04-16-04/|Revoking Let’s Encrypt Certificates]] 
 +  * [[https://medium.com/@mhagemann/correct-way-to-delete-a-certbot-ssl-certificate-e8ee123e6e01|Correct Way to Delete a Certbot SSL Certificate]] 
 +  * [[https://www.jesusamieiro.com/remove-revoke-a-domain-in-lets-encrypt/|Remove a domain in Let’s Encrypt]] 
 +  * [[https://linuxgenie.net/how-to-install-mariadb-on-debian-12-bookworm-distribution/|How to Install MariaDB on Debian 12 Bookworm Distribution]]
   * [[https://gist.github.com/cecilemuller/9492b848eb8fe46d462abeb26656c4f8|How to create an HTTPS certificate for localhost domains]] (reference)   * [[https://gist.github.com/cecilemuller/9492b848eb8fe46d462abeb26656c4f8|How to create an HTTPS certificate for localhost domains]] (reference)
   * [[https://letsencrypt.org/docs/certificates-for-localhost/|Let's Encrypt: Certificates for localhost]]   * [[https://letsencrypt.org/docs/certificates-for-localhost/|Let's Encrypt: Certificates for localhost]]
   * [[https://www.section.io/engineering-education/how-to-get-ssl-https-for-localhost/|How to Get SSL HTTPS for localhost]]   * [[https://www.section.io/engineering-education/how-to-get-ssl-https-for-localhost/|How to Get SSL HTTPS for localhost]]
   * [[https://www.digicert.com/kb/ssl-support/apache-fix-common-ssl-errors.htm|Troubleshooting Apache SSL Certificate Errors]]   * [[https://www.digicert.com/kb/ssl-support/apache-fix-common-ssl-errors.htm|Troubleshooting Apache SSL Certificate Errors]]
 +  * [[https://medium.com/@mhagemann/correct-way-to-delete-a-certbot-ssl-certificate-e8ee123e6e01|Correct Way to Delete a Certbot SSL Certificate]]
 +  * [[https://certbot.eff.org/docs/install.html#certbot-auto|Remove certbot-auto]]
 +  * [[https://stackoverflow.com/questions/7580508/getting-chrome-to-accept-self-signed-localhost-certificate|Getting Chrome to accept self-signed localhost certificate]]
 +  * [[https://stackoverflow.com/questions/10175812/how-to-create-a-self-signed-certificate-with-openssl|How to create a self-signed certificate with OpenSSL]]
 +  * [[https://www.ssls.com/knowledgebase/how-to-install-an-ssl-certificate-on-apache/|How to install an SSL Certificate on Apache]]
 +
 ===== Proxy ===== ===== Proxy =====
 * Setup a VirtualHost on your main apache server, which for this example is now called "proxy". * Setup a VirtualHost on your main apache server, which for this example is now called "proxy".
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 </VirtualHost> </VirtualHost>
 </code> </code>
 +
 ==== Links ==== ==== Links ====
   * [[https://serverfault.com/questions/486042/use-apache-as-a-https-to-http-proxy|Use apache as a HTTPS to HTTP Proxy]]   * [[https://serverfault.com/questions/486042/use-apache-as-a-https-to-http-proxy|Use apache as a HTTPS to HTTP Proxy]]
   * [[https://httpd.apache.org/docs/2.4/howto/reverse_proxy.html|Reverse Proxy Guide]]   * [[https://httpd.apache.org/docs/2.4/howto/reverse_proxy.html|Reverse Proxy Guide]]
   * [[https://www.jamescoyle.net/how-to/116-simple-apache-reverse-proxy-example|Simple Apache reverse proxy example]]   * [[https://www.jamescoyle.net/how-to/116-simple-apache-reverse-proxy-example|Simple Apache reverse proxy example]]
-===== Links ===== 
-  * [[https://www.itzgeek.com/how-tos/linux/debian/how-to-install-php-7-3-7-2-7-1-on-debian-10-debian-9-debian-8.html|How To Install PHP 7.4 / 7.3 / 7.2 / 7.1 on Debian 10 / Debian 9]] 
-  * [[https://deb.sury.org/|DEB.SURY.ORG]] 
-  * [[https://tecadmin.net/install-php-debian-9-stretch/|How To Install PHP (7.2, 7.1 & 5.6) on Debian 9 Stretch]] 
-  * [[https://linuxize.com/post/how-to-install-php-on-debian-9/|How to Install PHP on Debian 9]] 
-  * [[https://tecadmin.net/switch-between-multiple-php-version-on-debian/|How to Switch between Multiple PHP Version on Debian 9]] 
-  * [[https://tecadmin.net/install-multiple-php-version-with-apache-on-debian/|How to Install Multiple PHP Version with Apache on Debian 9]] 
-  * [[https://www.php.net/manual/en/simplexml.installation.php|php.net - SimpleXML Installation]] 
-  * [[https://www.php.net/manual/en/configuration.file.php|php.net - The configuration file]] 
-  * [[https://www.howtoforge.com/how-to-specify-a-custom-php.ini-for-a-website-apache2-with-mod_php|How To Specify A Custom php.ini For A Web Site]] 
-  * [[https://www.sslshopper.com/ssl-checker.html|SSL Checker]] 
-  * [[https://www.onepagezen.com/letsencrypt-auto-renew-certbot-apache/|How to Setup Auto-Renew for Let’s Encrypt SSL Certificates (Apache)]] 
-  * [[https://medium.com/@mhagemann/correct-way-to-delete-a-certbot-ssl-certificate-e8ee123e6e01|Correct Way to Delete a Certbot SSL Certificate]] 
-  * [[https://www.digitalocean.com/community/tutorials/how-to-secure-apache-with-let-s-encrypt-on-debian-9|How To Secure Apache with Let's Encrypt on Debian 9]] 
-  * [[https://certbot.eff.org/docs/install.html#certbot-auto|Certbot-auto]] 
-  * [[https://stackoverflow.com/questions/38302401/letsencrypt-add-domain-to-existing-certificate|Letsencrypt add domain to existing certificate]] 
-  * [[https://community.letsencrypt.org/t/certbot-auto-deployment-best-practices/91979|Certbot-auto deployment best practices]] 
-  * [[https://community.letsencrypt.org/t/multiple-servers-one-ip-address-home-setup-issue/64210|Multiple servers one IP address]] 
-  * [[https://stackoverflow.com/questions/2364840/what-is-the-size-limit-of-a-post-request|What is the size limit of a post request?]] 
-  * [[https://xdebug.org/docs/install|Xdebug: Installation]] 
-  * [[https://gist.github.com/RazaChohan/51bffc660d52eae8a75dd0f9503740bf|GitHub: Xdebug Installation]] 
-  * [[https://xdebug.org/docs/all_settings|Xdebug: all settings]] 
-  * [[https://www.digitalocean.com/community/tutorials/how-to-install-and-secure-phpmyadmin-on-debian-9|How To Install and Secure phpMyAdmin on Debian 9]] 
-  * [[https://www.digitalocean.com/community/tutorials/how-to-install-phpmyadmin-from-source-debian-10|How To Install phpMyAdmin From Source on Debian 10]] 
-  * [[https://computingforgeeks.com/install-phpmyadmin-with-apache-on-debian-10-buster/|How To Install phpMyAdmin with Apache on Debian 10]] 
-  * [[https://devanswers.co/problem-php-7-2-phpmyadmin-warning-in-librariessql-count/|Problem with phpMyAdmin and PHP 7.2]] 
-  * [[https://devanswers.co/manually-upgrade-phpmyadmin/|How to Manually Upgrade phpMyAdmin]] 
-  * [[https://www.phpmyadmin.net/downloads/|Download phpMyAdmin]] 
-  * [[https://www.itaewonpool.org/phpmyadmin/doc/html/faq.html#faq1-16|phpMyAdmin trouble shooting]] 
-  * [[https://stackoverflow.com/questions/7580508/getting-chrome-to-accept-self-signed-localhost-certificate|Getting Chrome to accept self-signed localhost certificate]] 
-  * [[https://stackoverflow.com/questions/10175812/how-to-create-a-self-signed-certificate-with-openssl|How to create a self-signed certificate with OpenSSL]] 
-  * [[https://www.ssls.com/knowledgebase/how-to-install-an-ssl-certificate-on-apache/|How to install an SSL Certificate on Apache]] 
-  * [[https://confluence.jaytaala.com/display/TKB/Securing+Apache+and+blocking+a+list+of+ip+addresses|Securing Apache and blocking a list of ip addresses]] 
-  * [[https://support.plesk.com/hc/en-us/articles/214529205--Apache-keeps-going-down-on-a-Plesk-server-server-reached-MaxRequestWorkers-setting|Apache keeps going down on a Plesk server: server reached MaxRequestWorkers setting]] 
  

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