How Do You Learn More about Quality Assurance Automation Tools?

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Problem scenario
You want to learn more about QA automation tools. What do you do?

Solution
The DevOps Zone web page has an article entitled “Top 10 Testing Automation Tools for Software Testing.”  For people who are unfamiliar with QA-related technologies, they may not recognize the names of the companies behind the tools except HP.  Many companies rely on HP’s QA tools despite the fact that HP may sell its software development tools business unit to a different company. 

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How Do You Deploy Apache Mesos and Apache Marathon to an Ubuntu Linux Server in AWS?

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Problem scenario
You want to install Apache Mesos and Apache Marathon to an Ubuntu 16.x Linux server in AWS.  How do you do this?

Prerequisites
You need two Linux instances with relevant Security Group rules added to allow for connectivity between the two.  One Ubuntu Linux server will be for the Mesos master and the other server will be for the Mesos slave.  You also need to be able to use a web browser to the Mesos master server. 

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How Do You Use PowerShell on Your Desktop to Manage Azure?

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Problem scenario
You want to use PowerShell on your local machine to create, delete, and restart servers in Azure.  You want to do other things with Azure using PowerShell on your workstation.  What do you do?

Solution
1.  To run Azure commands from your desktop, you need to connect your PowerShell ISE with your Azure instance.  If you are using Windows 10, see this posting and ignore this set of directions here entitled “How Do You Use PowerShell on Your Desktop to Manage Azure?” 

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How Do You Troubleshoot a Problem with Adding a DataNode to a Hadoop Cluster?

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Problem scenario
You are trying to add a DataNode to an existing Hadoop cluster.  There are numerous problems.  What do you do to troubleshoot the process?

Possible solutions
1.  New versions of Hadoop use a “workers” file — not a “slaves” file.

2.  Do you have a DNS solution in place for your DataNode and NameNode to resolve each other?  If you do not have a DNS server,

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How Do You Create a Chef Automate Server in Azure?

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Problem scenario
You want to have a Chef Automate server in Azure.  How do you create one?

Solution
1.  In the Azure portal click the “New” button on the left.
2.  Search for “Chef Automate” with no quotes.
3.  Click “Create”.
4.  Fill out the required configuration settings.  Make a mental note of the Chef Automate FQDN DNS Label that you provide (e.g.,

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How Do You Create an Ubuntu Linux VM in Azure Using PowerShell Azure?

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Updated 1/12/19

Problem scenario
You want to create an Ubuntu Linux server with one vCPU and one GB of RAM in Azure using PowerShell.  You want to use Azure Resource Manager (an ARM template).  You do not want to use the Azure Portal for 95% of the work involved.  What do you do to automate the process (including the deployment of a resource group, a network security group,

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How Do You Create Servers Using .JSON Files and Resource Manager in Azure?

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Problem scenario
You want to automate the creation of servers in Azure.  You want to try ARM templates to learn more about them.  How do you use .json files and Azure PowerShell to do this (without using the web UI)?

Solution
Prerequisites
i. You have a way of running Azure PowerShell commands.  If you need assistance with this, see this posting if your workstation is running Windows 7 or this posting if your workstation is running Windows 10. 

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How Do You Resize a Server in Google Cloud Platform?

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Problem scenario
You want to increase the amount of RAM that a VM instance has in GCP.  How do you do this?

Possible Solution #1
1.  Log into Google Cloud Platform
2.  In the “Cloud Engine” screen click on VM “instances.”
3.  You should see a list of VM instances.  Under the “Recommendation” tab you will see “Increase perf.”  Click on this.

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How Do You Get the Hadoop Yarn Web UI to Work?

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Problem scenario
You want to get Hadoop’s web UI to work.  You have access to the back-end of a Linux server.  How do you get the front-end of Hadoop (or hdfs) to work?

Solution
1.  Deploy Hadoop.  See this link for directions for any type of Linux. 
2.  Start the Hadoop services.  For a single-node deployment of Hadoop use sudo find / -name start-dfs.sh to find it;

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