A Technical I.T./DevOps Blog
Problem scenario
You are trying to run an s3cmd command (e.g., s3cmd ls), but it is not working. You run an s3cmd command and you get this:
ERROR: /home/jdoe/.s3cfg: None
ERROR: Configuration file not available.
ERROR: Consider using –configure parameter to create one.
What do you do?
Possible Solution #1
1. sudo find / -name .s3cfg
2.
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Continue reading “How Do You Troubleshoot an s3cmd Error About “.s3cfg: None”?”
Problem scenario
You have Jenkins set up on Linux. You want it to deploy files to other Linux servers, how do you do this as a proof of concept?
Solution
There are many different ways of accomplishing this task. These directions do not cover the production-recommended best practices associated with security. For such a solution, you may want to see this external site.
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Continue reading “How Do You Get Jenkins to Push Files to Other Servers in AWS?”
Problem scenario
You have an Ubuntu server in AWS with 0.5 GB of RAM. You want to install Jenkins on it without installing an “apt-transport-http” package. (You are ok with using an “apt-get upgrade” command on the Linux server.) How do you do this?
Solution
(If you do not want to run “apt-get upgrade”, and you can install “apt-transport-http”, then see this
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Continue reading “How Do You Deploy Jenkins 2.X to Ubuntu Linux in AWS?”
Problem scenarios
One, or both, of the following apply to your situation:
Problem scenario #1
How do you use AWS (the SNS component) to set up an email alert to be notified of a server going down?
Problem scenario #2
You want to use Amazon Route 53 to see how this component works. You do not want to register a domain name.
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Problem scenario
You want to use the AWS CLI on an Ubuntu server. You want to rapidly create EC-2 servers or use S3. You want to be able to script AWS management commands for rapid provisioning etc. from an Ubuntu Linux server. What do you do to install AWS CLI on an Ubuntu Linux server?
Solution
This works on an Azure server, an AWS EC-2 instance,
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Continue reading “How Do You Install the AWS CLI on an Ubuntu Server?”
Problem scenario
You installed Puppet Master on an AWS instance of RedHat Enterprise Linux. (See this link if you want to install Puppet Master.) You now want another AWS instance of RHEL 7.x to be configured as a Puppet Agent node. You want to run a manifest to make sure that this new Puppet Agent node (i.e., server) is working with your Puppet Master server. What do you do to install Puppet Agent 5.x on a RedHat Linux server and configure it to work with Puppet Master?
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Continue reading “How Do You Deploy Puppet Agent to a RedHat Linux Instance in AWS?”
Problem scenario
You are using a Debian distribution of Linux. You want to upload and download files to S3 without using the GUI. You want to be able to automate processes with scripts that interact with S3 from your Ubuntu Linux server. How do you do this?
Solution
The procedures have two parts after you have the prerequisites met.
Prerequisites
i.
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As of 12/1/17 the module to install Docker via Puppet on forge.puppet.com is not working for AWS instances. This known bug is blocking it from working.
[Sassy_Social_Share]Problem scenario
You have a Linux server in AWS and another Linux server in Azure. You want to use scp without a password to transfer files rapidly. How do you configure passwordless SSH authentication between the two servers?
Solution
1. Run this command on each server:
ssh-keygen -t rsa -P “”
# Accept the default prompt by pressing enter.
2.i.
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Problem scenario
You have a desired configuration that you want implemented with Chef. You want a command to execute and a file to transfer via a Chef recipe or cookbook. You have installed Chef server on one server (see this posting if you want to do this) and Chef client on another (see this posting for installing Chef client). You want to use Chef for the first time doing something as an example.
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