A Technical I.T./DevOps Blog
Problem scenario
You have a SATA hard drive. You want to copy data to a laptop via USB. What should you do?
Solution
Use a Vantec disk reader. (With IDE disk drives and Vantec disk readers for IDE drives, the disk reader can take 15 minutes before data is available.)
Vantec USB 3.0 to 2.5″ SATA HDD Adapter with case (CB-STU3-2PB) by Vantec USA …
Continue reading “How Do You Get Data from a SATA Hard Drive on to a Laptop?”
Question
You have heard the terms cognitive therapy, cognitive behavioral therapy, and behavioral therapy. What are the differences among these three things?
Answer
“If one were to view both behavior and cognitive therapies as opposite ends of a spectrum, then cognitive-behavioral theory is somewhere in between. ” Taken from http://www.drkot.com/whatare.html
Cognitive therapy involves a professional listening and understanding the beliefs of a patient.
…
Problem scenario
You are using Debian or Ubuntu Linux and you want to enter the PostgreSQL command prompt. What do you do?
Solution
Run these commands:
sudo su postgres
psql
You are done. Optionally you can run these passwords if you want:
postgres=# create user jdoe with password ‘goodpassword’;
postgres=# create database foobar with OWNER=jdoe;
…
Continue reading “How Do You Enter the PostgreSQL Command Line from the Linux Command Prompt?”
Problem scenario
You know Oracle VirtualBox on Linux has access to different network interfaces. The names of these NICs needs to be correct for some purpose of yours. How do you view or list this (for the purposes of creating a Vagrantfile)?
Solution
Run this command if you are running Unix/Linux: VBoxManage list bridgedifs
…
Continue reading “How Do You See the NICs That Oracle VirtualBox Uses?”
Problem scenario
You are using Debian or Ubuntu Linux and you want to enter the MySQL command prompt. What do you do?
Solution
Run this command: sudo mysql -u root
…
Continue reading “How Do You Enter the MySQL Command Line from the Linux Command Prompt?”
Problem scenario
You want to change the knock code itself or totally disable it on your Android tablet or phone. What do you do?
Solution
To remove the knock code:
Go to Settings -Display -Lock Screen -Select screen lock
Enter the knock code and click “next”.
Click on “None”.
You are done.
…
Continue reading “How Do You Disable the Knock Code Security Feature on an Android Tablet or Phone?”
Problem scenario
You are using Debian or Ubuntu Linux and you want to install MySQL. What do you do?
Solution
sudo apt -y update
sudo apt -y install default-mysql-server mycli
sudo systemctl start mysql
…
Continue reading “How Do You Install MySQL on a Debian/Ubuntu Linux Server?”
Updated 11/9/17
Problem scenario
In AWS or Azure you have Linux instances that you want to be configured to use a Chef Server. How do you install Chef client and configure it to work with a Chef server?
Solution
These directions have been tested in Azure (with an Ubuntu 16.x server as either the Chef client node or the Chef server) and AWS (with a Red Hat Enterprise Linux 7.x server as the Chef client node or the Chef server).
…
Continue reading “How Do You Install and Configure Chef Client on a Linux Server in AWS or Azure?”
Problem scenario
You want to know about some common kubectl commands. What should you do?
Solution
The below was taken from running “kubectl help”. Here are some kubectl commands:
Basic Commands (Beginner):
create Create a resource from a file or from stdin.
expose Take a replication controller, service, deployment or pod and expose it as a new Kubernetes Service
run Run a particular image on the cluster
set Set specific features on objects
Basic Commands (Intermediate):
explain Documentation of resources
get Display one or many resources
edit Edit a resource on the server
delete Delete resources by filenames, …
Problem scenario
You updated the Directory section of apache2.conf. You changed the DocumentRoot stanza in apache2.conf too. But when you browse to the website, you are not getting to the files in the directory you changed it to. You are getting files from /var/www/html/. Apache has been installed on Debian Linux. What do you do?
Solution
…
Continue reading “How Do You Change the Apache Web Server Default Directory for a Website’s Files?”