A Technical I.T./DevOps Blog
Problem scenario
You have a Linux server, and you want to install Snort use its basic functionality. How do you do this?
Background
It is advisable to place Snort on every machine (Upguard). This way if one server is compromised, you have Snort’s features on all other servers. When alerting but not logging, running Snort usually consumes a negligible amount of resources (RAM,
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Continue reading “How Do You Get Snort Working to Test It Out?”
Problem scenario
You want to install Boost C++ libraries and related development files. How do you do this?
Solution
Run this command:
sudo apt-get install automake bison flex g++ git libboost1.*-all-dev libevent-dev libssl-dev libtool make pkg-config
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Continue reading “How Do You Install Boost C++ Libraries and Related Development Files?”
Problem scenario
When you completed configuring Kubernetes, you were provided with a URL. But this web page looks minimalistic with no graphics and a white background. The web UI is not complete or polished and looks like a YAML file. How do you get to the regular Kubernetes dashboard that looks like this picture?
Possible Solution #1
1. From the command prompt you set up Kubernetes with,
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Continue reading “How Do You Log into the Kubernetes Dashboard?”
Problem scenario
When you use docker login from a client server and you are challenged for credentials. But after you enter the password and press enter you get this error: “Error response from daemon: Get https://: x509: certificate signed by unknown authority”
You do not login to the Docker registry. How do you get around this problem so you can log into the Docker registry?
Solution
Use one solution
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Continue reading “How Do You Solve the Docker Error “x509 certificate signed by unknown authority”?”
Problem scenario
You do not want to rely on internet-available Docker registries. You want to have your own private Docker registry in your own AWS network. You want to share Docker images (to build containers) with your team. You think that installing/deploying a Docker registry will help you. What do you do to build and configure (or just set up) your own Docker registry with an Ubuntu 16.x server?
Solution
These directions were tested to work with Ubuntu 16.x in AWS and Azure.
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Continue reading “How Do You Create a Docker Registry in Ubuntu Linux?”
Problem scenario
You get an error about a certificate not working with your host/server name. One of the following apply to your situation:
When you use “docker login” you get this message:
“Error response from daemon: x509: certificate is not valid for your server”
OR
When you try to use curl to the Docker registry server you get this error:
curl: (51) SSL: certificate subject name
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People who come to this blog, and homeschooled people, often learn from Google or other search engines. The woman who wrote the song “Mary Had a Little Lamb,” Sarah Josepha Hale, was homeschooled herself. She made two historic contributions, one was musical and the other was political. She influenced Abraham Lincoln to make Thanksgiving a national holiday for many years before it was officially recognized. Wikipedia reports that she was from New England where people regularly celebrated Thanksgiving for years before it was was proclaimed as the third national holiday in 1863.
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Continue reading “The Histories Behind the American Thanksgiving(s)”
Problem scenario
You have a Red Hat Enterprise Linux server in Azure. How do you install Docker on it?
Solution
Run these three commands:
sudo yum -y install docker
sudo groupadd docker
sudo usermod -aG docker ec2-user
FFR
For directions for install Docker to an AWS instance of RHEL, see this link.
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Continue reading “How Do You Install Docker on a RHEL VM in Azure?”
Updated 2/10/22
Answer
DevSecOps is the integration of security practices with DevOps. DevOps may be a culture of automation (as Stackify says), a blend of disciplines (development and operations), or a key word in a job title (e.g., DevOps Engineer or DevOps Architect). DevSecOps seeks to rapidly integrate security measures into development and operations and avoid security specialists working in separate and relatively isolated teams.
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Continue reading “What is DevSecOps (or DevOpsSec, SecDevOps, or rugged DevOps)?”
Question
What is a “data swamp”?
Answer
A data swamp is best defined as a severely degraded data lake. The term data swamp connotes poor governance and negligent management that caused a data lake to gradually lose its value. A data swamp is data lake that was once useful but through negligent utilization can no longer be used by even highly talented analytics professionals.
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