A Technical I.T./DevOps Blog
Problem scenario
You try to store a secret, but you see this message:
“Your secret was created successfully but configuring rotation has failed
Secrets Manager cannot invoke the specified Lambda function. Ensure that the function policy grants access to the principal secretsmanager.amazonaws.com. “
What do you do?
Solution
Try this posting.
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Problem scenario
Using Raspberry Pi, you do not know the root / administrator password. For example you go to Menu -System Tools -Root terminal. You are prompted with “Enter the administrative password.” No password works. What should you do?
Solution
We do not know. We suggest you change it if you want to know for certain. Open a regular terminal.
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Continue reading “What is the Default Password with a Raspberry Pi?”
Here are some tips when using Python and dealing with lists.
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Problem scenario
One of the following apply to you.
Problem scenario #1
You try a PowerShell command but you get an error like this “The ‘Login-AzureRmAccount’ command was found in the module ‘AzureRM.profile’, but the module could not be loaded.”
OR
Problem scenario #2
You try a PowerShell command but you get an error like this:
Files\WindowsPowerShell\Modules\AzureRM.profile\5.8.2\AzureRM.Profile.psm1 cannot be
loaded because running scripts is disabled on this system.
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Continue reading “How Do You Get PowerShell to Run Scripts?”
Problem scenario
In Python your program has a two-dimensional list. It prints out like this:
[’ ‘, ‘X’, ‘ ‘, ‘ ‘, ‘ ‘]
[’ ‘, ‘X’, ‘X’, ‘ ‘, ‘ ‘]
[’ ‘, ‘X’, ‘X’, ‘X’, ‘ ‘]
[’ ‘, ‘X’, ‘X’, ‘X’, ‘X’]
You want it to print out like this:
X
XX
XXX
XXXX
Solution
Assuming that there are n rows of your matrix (aka two-dimensional array),
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Problem scenario
You try to compile a java program, but you get this error:
hello.java:1: error: class HelloWorld is public, should be declared in a file named HelloWorld.java
public class HelloWorld {
^
1 error
What is wrong?
Solution
The .java file must have a name of “HelloWorld” like the public class in the error.
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Problem scenario
SonarQube is not starting up properly. What should you do?
Possible Solution #1
For the sonar.properties file do not put “#” symbols on lines that are not completely commented out. They can cause you problems.
Possible Solution #2
You may want to click here to see more about re-installing it or troubleshooting the error.
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Continue reading “How Do You Troubleshoot SonarQube Not Starting up Properly?”
Question
You often see the initialism SLS. What does it stand for?
Answers
SLS disambiguation
1. Salt State System. SaltStack uses .sls files. “The core of the Salt State system is the SLS, or SaLt State file.” (This quote was taken from this site.)
2. Scheduler Load Simulator (as in YARN SLS). To read more about this,
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Problem scenario
With an HDMI cable you cannot get an external monitor that is connected to your Windows computer to work. In the Control Panel section for “Screen Resolution” there is a drop down menu for “Display.” This will give some descriptive identification of your monitor when the monitor is working properly. It does not show an attached monitor. What should you do if the “Display” drop down in Screen Resolution (in the Windows Control Panel) does not show your monitor and the external monitor is not working to display any output?
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Problem scenarios
One or both of the following apply:
#1 You want to automate the sending of the exact same email to multiple people. You do not want to manually type in the recipients. You have the same subject and body that each recipient should receive. You want to customize the “from address” that the recipients see. How do you do this?
OR
#2 You are using the mail command on a Linux server.
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