Ping is a common diagnostic tool in networking technology. It is essentially an echo request to confirm an IP address is up and accessible. Where does the term ping come from?
The acronym for “packet inter-network groper” seems like it is a backronym for the trademarked table tennis game which involves a lightweight ball being returned in the opposite direction that it was sent.
Docker Hub is a public registry for containers. Does OpenShift support something like this? You know they have the OpenShift Container Registry — but this is private to a given OpenShift instance. Red Hat owns OpenShift. Is there a public registry supported by Red Hat?
Yes. It is called Quay.io. If you want a brief overview of it,
You want to create a CMK in Amazon web servers. What do you do?
Use Secrets Manager with Amazon’s Key Management Service.
1. Log into the AWS console.
2. Go to “Key Management Service”
3. Click on “Create key”
4. Enter an “Alias”. Normally you won’t click on the “Advanced options” unless you have a special reason.
You have a .zip file, on your Linux server, that you want to uncompress. You do not have unzip installed on your machine. What should you do?
Possible Solution #1
Install unzip. If you are using a Debian/Ubuntu distribution of Linux, run this: sudo apt -y install unzip
Possible Solution #2
You could use WinSCP to download the file to your Windows workstation.
You want to use custom modules (e.g., .py files that will be called by another Python program). You are trying to figure out which location(s) the Python interpreter will look for such modules. How do you determine the directory where Python will look when it uses the “import” key word?
Run these three commands (the first is a Bash command and the other two are Python):
print(sys.path) » Read more..
You are automating a Linux infrastructure task with Python using subprocess calls. You get this error “subprocess.CalledProcessError: Command ‘…’ returned non-zero exit status 1”, what should you do?
Run the Linux command without Python. Then run echo $? to determine the exit code. If you see a 1, that means Python notices this command is not considered to have run successfully.
You copied the kubectl file. You are not sure what the permissions it should have. When you try to execute it, you get “Permission denied”. What should you do?
We recommend using this: sudo chmod 777 kubectl
When you use conjure-up, it makes kubectl have 777 permissions. We find this to be a reasonable standard that works. It allows for other users to use it.