In Drupal 7, we can read the current user's custom data by:

  
global $user;
$user_obj = user_load($user->uid);
print_r($user_obj->data);
  

... and write by:

  
global $user;
$user_obj = user_load($user->uid);
user_save($user_obj, array('data' => array('key' => $value)));
  

Now in Drupal 8, we can read the current user's custom data by:

There are some instances that we need to alter the value of Views' field and add markup on its rendered output programmatically. The following codes shows how to achieve these tasks using hook_views_pre_render().

The Nginx+PHP FPM is the ideal web-server setup as this is more faster web service. This article should be a continuation of this article (just skip the "Configure Apache" section and if you are not using Virtualmin, skip the "Configure Virtualmin" section.).

The following procedures are tested on Linode server running Centos 7 64-bit Linux distribution.

This solution should apply to Drupal sites that uses Nginx as web server with PHP FPM and the Nginx configuration is based on perusio's Nginx configuration for running Drupal.

The main setup is Drupal Panopoly distribution and using MongoDB Field Storage module. I encountered issue in Panels' in-place editor where after saving the non-reusable Text Fieldable Panels Panes

... it displayed empty body:

The following are Monit configuration that are created specifically for CentOS 7 system. If you have not installed Monit yet, please check this guide: Installing Monit to monitor your server running CentOS 7 with nginx.

Apache

Create the file /etc/monit.d/httpd and add the following to it:

We have a script that is executed by "nobody" user but it needs to access a shell command that requires "root" user permission. This article will show an example how to deal with this. The following guides are tested on my Linode server running Centos 7 64-bit Linux distribution.

Below is a simple Python script:

This article will guide on setting up Solr Admin web interface in Nginx. If you haven't installed Solr in your system, please check this article Step by step guide to setup Apache Solr 5.x in CentOS 7 for Drupal 7 Panopoly distro using Search API. Please follow this guide if you haven't setup your Nginx yet.

1. Create a domain for Solr, in this guide lets use solr.mywebsite.com. Go to DNS manager and add "solr" as A record for mywebsite.com