A Technical I.T./DevOps Blog
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.
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Continue reading “How Do You Deploy a Kubernetes Cluster in Google Cloud Platform?”
Problem scenario
You want to install Docker on a Google Cloud Platform virtual machine running RedHat Enterprise Linux. What do you do?
Solution
Run this command: sudo yum -y install docker
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Continue reading “How Do You Install Docker on a GCP VM running RHEL?”
Problem scenario
You have an EC-2 instance running RedHat Enterprise Linux. You want to use the Python SDK for AWS called Boto. What should you do?
Solution
Prerequisites
Install pip. See this link if you do not know how.
Procedure
1. Run this command: sudo pip install boto3
2. You are done. The rest is optional.
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Continue reading “How Do You Install Boto 3 on a RHEL Server in AWS?”
Problem scenario
You want to install Jenkins on an Ubuntu Linux server without running an “apt-get upgrade” command. (You are ok with installing a “apt-transport-https” package.) What should you do?
Solution
See this posting because the directions work for Ubuntu in AWS and Debian in GCP.
(If you can run “apt-get upgrade”, and you do not want to install “apt-transport-https”,
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Continue reading “How Do You Install Jenkins 2.x on Ubuntu Linux in AWS?”
Updated 1/4/19
Question
You have heard of Azure’s Serverless Function Apps. What are they and what do they do?
Answer
A Serverless Function App is a PaaS solution. As of 1/4/19 they support .NET or JavaScript code as if the code was run on a Windows environment. They will eventually support Java/Linux.
You can run a program without a server using Azure.
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Problem scenario
You have heard about Amazon Elastic Container Registry. You want to configure a Docker registry using an AWS PaaS offering. How do you use ECR?
Solution
1. Log into the AWS web console.
2. Go here: https://console.aws.amazon.com/ecs/home#/repositories
3. Click “Get started” if you have never created a repository before. If you have created a repository, skip to the next step.
4.
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Problem scenario
You have sufficient hard disk space. But your applications are memory constrained on your Linux server. You cannot add more RAM. How do you create swap space on your Linux server (to create virtual memory)?
Solution
Overview
We consider virtual memory to be a hybrid of RAM “and disk space that running processes can use. Swap space is the portion of virtual memory that is on the hard disk,
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Continue reading “How Do You Create Swap Space on a Linux Server Running in the Cloud?”
Problem scenario
The needs for a server have changed. You now want your AWS EC-2 virtual server to have more CPU and RAM, but you do not want to migrate to a new instance. You can only afford 15 minutes of down time. What should you do to resize the server’s capacity to have more processors and greater memory?
Solution
These basic steps will work if you want to downgrade your server too (to save money).
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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,
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Continue reading “How Do You Install Jenkins 2.x on Debian Linux in Google Cloud Platform?”
Problem scenario
You want to quickly install Terraform on any type of Linux. How do you write a single script that will work on Debian/Ubuntu, CentOS/RedHat/Fedora, or Linux SUSE?
Solution
1. Create a file called terra.sh in /tmp/ with the content below.
#!/bin/bash
# Written by www.continualintegration.com
# Updated in January of 2022
tfv=0.15.5 # Change this version as necessary
distro=$(cat /etc/*-release | grep NAME)
debflag=$(echo $distro | grep -i “ubuntu”)
if [ …
Continue reading “How Do You Install Terraform on any Type of Linux?”