A Technical I.T./DevOps Blog
Problem scenario
You are installing Red Hat Enterprise Linux. There are some partitions that you do not know how to configure. You know your systems uses NVMe (Non-volatile memory) and EFI. How do you configure /boot and /boot/efi in the “Manual Partitioning” when you are installing Linux?
Solution
The /boot/efi partition would likely be nvme0n1p2 with 1024 MiB. The “Mount Point” would be “/boot/efi”.
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Continue reading “How Do You Configure /boot and /boot/efi Partitions on a RHEL Computer?”
Problem scenario
You like the roman chair exercise for your back. Should you keep doing it?
Solution
Do you deadlift? The problem with the roman chair is that people who use it probably do not deadlift (because of time). If your workout routine is taking too long, you may want to not use the roman chair. We think you should deadlift instead of using the roman chair.
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Question
You want to know about cryptocurrency forking and inflation. What are these concepts?
Answer
Cryptocurrency can have inflation; for example as more bitcoin is mined, there is more in circulation. See [1] for more information about cryptocurrency inflation. Cryptocurrency forking can mean two different things [2]. There can be a new type of cryptocurrency that is not compatible with the older coin (a hard fork).
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Continue reading “What is Cryptocurrency Forking and Cryptocurrency Inflation?”
Problem scenario
You want to stretch your quadriceps without standing or kneeling. What should you do?
Solution
To stretch your left quadricep lie on your left side. With your right hand, pull the top of your left foot toward your butt with your knee bent.
To stretch your right quadricep lie on your right side. With your left hand,
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Continue reading “How Do You Stretch Your Quadriceps without Standing or Kneeling?”
Problem scenario
The email sender may have a low spam score. What should you do to troubleshoot it?
Solution
Do other people get the sender’s emails? If so, has it ever worked? If not, check the destination email address. Can the destination email address send an email to the first sender with the problem? You could then reply. Maybe you accidentally typed in the wrong email address.
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Continue reading “How Do You Troubleshoot an Email when the Sender’s Spam Score May Be Bad or Good?”
Problem scenario
You are not sure if you should look at how a solution was found. Is it worthwhile to do this?
Answer
Yes. Gottfried Wilhelm Leibnitz said “Nothing is more important than to see the sources of invention which are, in my opinion, more interesting than the inventions themselves.” (Page 123 of How to Solve It by Polya.)
Some people are so afflicted with Type A personality,
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Continue reading “Is It Valuable to Reflect on the Way a Solution Was Found?”
Sometimes animals help humans or distressed animals of different species. Here is a video demonstrating anthropomorphic and compassionate qualities:
Here is a video with a similar theme:
This video shows animals helping a different species of animal:
Birds can work cooperatively with honey badgers to consume honey.
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Continue reading “Sometimes Animals Help Members of Different Species”
Problem scenario
You get an error about insufficient IP addresses. You have exhausted a pool of IP addresses but you do not understand why. What could be wrong when you have no spare IP address, or you get a message related to this problem when you do not think that there is a shortage?
Possible Solution
You were doing an upgrade with a “rolling” option such that there was no downtime.
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Continue reading “How Do You Troubleshoot Not Having Enough IP Addresses?”
Problem scenario
You run a kubectl command on a YAML (.yml) file. But you get “Expected X selector labels”. What do you do?
Solution
Go to the “labels” and “matchlabels” sections of corresponding YAML files. Do you see “app:” or “environment:” stanzas? Are these consistently used in your YAML files? This error can happen if the YAML files are inconsistent with their “app:” and “environment:” stanzas.
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Continue reading “How Do You Troubleshoot “Expected x selector labels” with Kubernetes?”