Month: March 2016

Force HTTPS in htaccess and wp-config.php

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Force HTTPS in WordPress by adding this to your htaccess-file, before the line “# BEGIN WordPress”.

Apache
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RewriteEngine On
RewriteCond %{HTTP:X-Forwarded-Proto} !https
RewriteRule ^ https://%{HTTP_HOST}%{REQUEST_URI} [L,R=301]

 

Also, add this to your wp-config.php. FORCE_SSL_ADMIN is there to make sure there’s no redirect loop in wp-admin.

PHP
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$_SERVER['HTTPS'] = 'on';
define('FORCE_SSL_ADMIN', true);
define('WP_SITEURL', 'https://henriksson.me'); // replace with your sitename
define('WP_HOME', 'https://henriksson.me'); // replace with your sitename

 

Automatically start MySQL if apache kills the process or sacrifice children on Ubuntu Server

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There are several ways to solve the problem of Apache running wild and killing MySQL. It the problem occurs very infrequently, there’s a easy way of restarting MySQL with the use of the crontab. The script even sends a notification email so you know what just happened.

First, SSH into your server:

Shell
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ssh root@server-ip

Create a script file:

Shell
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nano mysqlfix.sh

Paste the following:

Shell
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#!/bin/bash
PATH=/usr/sbin:/usr/bin:/sbin:/bin
if [[ ! "$(/usr/sbin/service mysql status)" =~ "start/running" ]]
then
    echo "MySQL restarted for henriksson.me on Digital Ocean" | mail -s "MySQL restarted" markus@henriksson.me
    sudo service mysql start
fi

Press CTRL + O to save, and CTRL + X to exit.

Give execute permission to your script:

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chmod +x mysqlfix.sh

Edit the Crontab:

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crontab -e

Paste the following:

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* * * * * /root/mysqlfix.sh

Press CTRL + O to save, and CTRL + X to exit.

To see if it works, type the following:

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service mysql stop

In case the service doesn’t start, just start it manually with the following:

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service mysql start

 

Remove query strings from static resources in WordPress

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Remove query strings from static resources in WordPress by adding this to your functions.php. You can also change the substring “?ver” to anything else you want to remove.

PHP
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function _remove_script_version( $src ){
    $parts = explode( '?ver', $src );
    return $parts[0];
}
 
add_filter( 'script_loader_src', '_remove_script_version', 15, 1 );
add_filter( 'style_loader_src', '_remove_script_version', 15, 1 );