A Technical I.T./DevOps Blog
Problem scenario
You want to create an example of a docker compose file. How do you use docker-compose?
Prerequisites
i. This assumes you have Docker installed and running. If you need assistance, see this posting.
ii. This assumes that you have installed docker-compose. If you need assistance, see this posting.
iii. This assumes the Docker host has access to the internet.
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Problem scenario
You are using a Red Hat derivative of Linux. You want to install Gatling. What do you do?
Solution
Prerequisite
Install Java. If you need assistance, see this posting.
Procedures
1. Run a script with the following content (e.g., name it installgatling.sh and run sudo bash installgatling.sh):
gatlingversion=3.3.1 # change this version as needed. …
Continue reading “How Do You Install Gatling on a CentOS/RHEL/Fedora server?”
Problem scenarios
Your situation is described in one of two ways.
#1 You go to the SonarQube web UI to log in. You see nowhere to log in. You see this error: “Service Unavailable The server is temporarily unable to service your request due to maintenance downtime or capacity problems. Please try again later.” What should you do?
Or your situation is like this:
#2
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Problem scenario
You want to browse the web UI of a web application that you set up on a Linux machine in GCP. How do you get a web service (e.g., Nginx, Apache web server, SonarQube or Jenkins) to work when the server is in Google Cloud Platform?
Solution
Prerequisites
This assumes you have deployed the web application. If you want to deploy Nginx,
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Continue reading “How Do You Get a GCP Server to Present a Website on the Internet?”
Problem scenario
You have a Red Hat distribution of Linux (e.g., CentOS/RHEL/Fedora). How do you install SonarQube?
Solution
Prerequisites
Install the Java Development Kit so you can later take advantage of plugins. If you need assistance with this, see this link.
Procedures
For future reference, at some point the “9.6”s you see below will have to be incremented to a newer version of PostgreSQL.
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Continue reading “How Do You Install SonarQube on a Red Hat Distribution of Linux?”
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,
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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).
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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.
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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?”