A List of RabbitMQ Books

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Enterprise Integration Patterns: Designing, Building, and Deploying Messaging Solutions by Gregor Hohpe and Bobby Woolf
Instant RabbitMQ Messaging Application Development How-to by Andrew Keig
Learning RabbitMQ by Martin Toshev
Mastering RabbitMQ by Emrah Ayanoglu, Yusuf Aytas and Dotan Nahum
Production-Ready Microservices: Building Standardized Systems Across an Engineering Organization by Susan J. Fowler
RabbitMQ Cookbook by Sigismondo Boschi and Gabriele Santomaggio
RabbitMQ Essentials by David Dossot
RabbitMQ in Action: Distributed Messaging for Everyone by Alvaro Videla 

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How Do You Run (Execute) a Java Program That Compiled Successfully?

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Problem scenario
You try to run a compiled Java program.  You see the .class file as a result of your compilation.  But when you run java ContInt.class, you get this error:

“Error: Could not find or load main class ContInt.class”

How do you run the bytecode (to have your Java program execute after compilation)?

Solution
Omit the “.class” when you run the “java” command. 

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How Do You Install Ansible on an AWS Instance of RedHat Enterprise Linux?

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Problem scenario
One of the following applies:
1. You want to install Ansible on an AWS instance of RHEL.  
2. You want to install Ansible on a GCP server running RHEL.

How do you do either of these things?

Solution
These directions should work for other RedHat distributions of Linux (e.g., Fedora or CentOS) that are not AWS servers as long as the server has 2 GB of RAM.

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A List of Apache Web Server Books

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The Accidental Administrator: Linux Server Step-by-Step Configuration Guide by Don R Crawley
Administering Apache by Mark Allan Arnold, Clint Miller, James Sheetz and Jeff D. Almeida
Apache 2 Pocket Reference: For Apache Programmers & Administrators (Pocket Reference (O’Reilly)) by Andrew Ford
Apache Administrator’s Handbook by Rich Bowen, Daniel Lopez Ridruejo and Allan Liska
Apache Cookbook: Solutions and Examples for Apache Administration by Rich Bowen and Ken Coar
Apache Essentials: Install,

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How Do You Integrate PHP with Postgresql?

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Problem scenario
You want your PHP files (either a frontend web page or a purely backend script) to integrate with Postgres.  You want .php files to log into a Postgres database to run SQL commands.  How do you do this?

Solution
Install php5-pgsql or php7.0-pgsql.  It depends on your version of PHP.  Use this command to find out what version of PHP you have:  php –version

Install this module: 

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How Do You Install Vagrant on an Ubuntu Linux Server?

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Problem scenario
You have Ubuntu 14.04 or 16.x, and you want to install Vagrant 1.x. (If you have Ubuntu 16.0x or higher and want to install Vagrant 2.x, go to the very bottom.)  How do you do it?

Solution
1. Run this command: sudo find / -name sources.list #find the file that governs Debian packages

3.  Ignore /usr/share/doc/apt/examples/sources.list.  Make a copy of the other sources.list as a back up (in case you need to rollback).

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