A Technical I.T./DevOps Blog
Problem scenario
You try connect via your wireless router to a WiFi network (e.g., at a restaurant, hotel, or public library). You open a web browser because you were told you would be prompted with a splash screen. On this page you would agree to the terms of service and/or enter a password. You are not seeing this web page. You try different URLs (e.g., www.yahoo.com, www.google.com). You are never prompted for a username or password.
…
Problem scenario
You want users to be able to enter a table name and then see the content of the table. How do you create a webpage with a text field and a submit button that will display the content of the table if it exists?
Solution
Overview
This assumes you have the LAPP stack set up on a single server. To set up the LAPP stack on Ubuntu,
…
Updated on 8/18/19
Problem Scenario
How do you deploy a Kubernetes cluster in Google Cloud Platform?
Solution
There are three ways to do this. (You could use the console in a web browser. A second way is with a command line interface method. A third way is with a REST API.)
Possible solution #1
One way is with the console.
…
Continue reading “How Do You Deploy a Kubernetes Cluster in Google Cloud Platform?”
Problem scenario
You want to use Python Eve to test it out. You also want to create a RESTful endpoint on an Ubuntu Linux server. How do you do this?
Solution
1. Install Eve on the Ubuntu server. Here is one way:
sudo apt-get -y update
sudo apt-get -y install python python-pip
sudo pip install eve
An alternative way to install it is given
…
Continue reading “How Do You Use Python Eve as a RESTful Endpoint on an Ubuntu Server?”
Problem scenario
You have some web servers that you want a new HAProxy server to distribute traffic to. You have an Ubuntu or Debian Linux server that you want HAProxy installed on. You want HAProxy to be a load balancer. What do you do?
Solution
Prerequisites
You have at least two web servers set up and you know their IP addresses (either internal or external).
…
Continue reading “How Do You Set up HAProxy on a Linux Server?”
Problem scenario
You think the Apache web server is running. You can see the web page from a web browser or your coworkers tell you that it is running. You are not 100% sure however. You want to see the Linux pid (process ID) for Apache web service that is running. You run this:
ps -ef | grep httpd
You do not see any services running.
…
Question
In the Context of Nginx, What Is the Difference between the default.conf and nginx.conf Files?
Answer
For general Nginx purposes, the nginx.conf file specifies the location of the Nginx logs and the names of the log files themselves.
For general Nginx purposes, the default.conf handles many more configuration items than nginx.conf. The default.conf file will allow you to configure a non-standard port (other than port 80) and specifies if Nginx will act as a load balancer or a web server.
…
Problem scenario
You have deployed the LAPP stack. You want a basic and meaningful message to be presented to a user of the web application after a SQL command has been run. Currently a user can click on buttons to run SQL commands behind the scenes. Messages that are returned to the user may be meaningless like “Resource id #4” or “Resource id #5.” You want to augment the functionality so at least a rudimentary message (with some meaning) is returned to the user.
…
Problem scenario
You want to deploy the LAMP stack on a Debian/Ubuntu distribution of Linux. You want to install and the four core technologies that compose the LAMP stack (Linux, Apache web server, MariaDB/MySQL, and PHP). How do you do this?
Solution #1 (with MySQL)
To install the OS, Ubuntu Linux, see this link. To install MySQL run these commands:
sudo apt-get -y update
sudo apt-get -y install php apache2 mysql-server
# Provide a password for the mysql root user when prompted. …
Continue reading “How Do You Deploy LAMP with Ubuntu Linux?”
Problem scenarios
#1 You have a Debian server in GCP with roughly 0.592 GB of RAM. You want to install Jenkins on it. How do you do this?
OR
#2 You have a nano flavor of an EC2 instance running Ubuntu Linux (i.e., 0.5 GB of RAM). You want to install Jenkins on it. How do you install Jenkins 2.x on Ubuntu Linux in AWS? (If you do not want to install a “apt-transport-https” package,
…
Continue reading “How Do You Install Jenkins 2.x on Debian Linux in Google Cloud Platform?”