A Technical I.T./DevOps Blog
Problem scenario
You run this command: kubectl get svc
You receive this:
” could not get token: NoCredentialProviders: no valid providers in chain. Deprecated.
For verbose messaging see aws.Config.CredentialsChainVerboseErrors”
What should you do?
Solution
Install and configure the AWS CLI. If you need assistance with this, see this posting.
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Problem scenario
You want to use Azure’s Kubernetes PaaS offering using the GUI. What do you do?
Solution
1. Sign into the Azure portal.
2. Click on “Services” on the left.
3. Click on “Containers”.
4. Click on “Kubernetes services”.
5. Click “Add”.
6. Fill out the required fields.
7. Click the “Review + create” button.
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Continue reading “How Do You Deploy AKS (Azure’s Kubernetes) Using the GUI?”
Problem scenario
You want to install pip on a RedHat Enterprise Linux server in AWS. What do you do?
Solution
Prerequisites
This assumes that Python has been installed. If it has not, run this command:
sudo yum -y install python3
Procedures
You may want to try these two commands first:
sudo find / -name pip
sudo find / -name pip3
If the above did not help you,
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Continue reading “How Do You Install pip on a RHEL Server in AWS?”
Problem scenario
You are used to AWS Security Groups. You created a firewall rule in GCP. You cannot seem to reach the GCP server. What is wrong?
Possible Solution
Does the GCP firewall rule use the same shorthand notation like this?
x.x.x.x/32
Inbound rules in AWS Security Groups use the /32 to allow an IP address to connect to an EC-2 instance or service.
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Continue reading “How Do You Open a Port to Connect to a GCP server?”
Problem scenario
You have a role that you want to execute a Lambda function. What do you do?
Solution
1. Log into the AWS console.
2. Go to IAM -Roles
3. Click on the role you want to change.
4. Click on “Attach policies”
5. In the “Filter policies” field search for “lambda” with no quotes
6.
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Continue reading “How Do You Grant a Role The Ability to Run a Lambda Function?”
Problem scenarios (one or both of the following are happening)
#1 You are getting “botocore.exceptions.NoRegionError: You must specify a region” when you run a Python program (that involves boto and AWS).
#2 You are trying to create a session with a Python/boto program. You are printing out the Session information in your Python program using boto but you see this:
Session(region_name=None)
What should you do?
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Continue reading “How Do You Troubleshoot the boto Message “NoRegionError”?”
Problem scenario
You want to create a Windows server in Google Cloud Platform. How do you do this?
Solution
1. Log into Google Cloud Platform.
2. Click the hamburger icon in the upper left hand corner (the icon with three horizontal bars stacked onto each other).
3. Go to Compute Engine -VM Instances
4. Click “Create Instance”
5.
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Continue reading “How Do You Create a Windows VM in Google Cloud Platform with the Console?”
Problem scenario
You try to run terraform apply to create an Azure VM but you receive a message like this:
Error: Error applying plan:
1 error(s) occurred:
* azurerm_virtual_machine.myterraformvm: 1 error(s) occurred:
* azurerm_virtual_machine.myterraformvm: compute.VirtualMachinesClient#CreateOrUpdate: Failure sending request: StatusCo” Message=”Authentication using either SSH or by user name and password must be enabled in Linux profile.” Target=”linux”
What should you do?
Solution
1.
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Problem scenario
You try to manually delete EC-2 instances (both worker nodes and the master node of Kubernetes), but this does not work. The EC-2 instances are re-created. How do you delete the cluster?
Solution
Prerequisite
Install and configure the AWS CLI; if you need assistance, see this posting.
Procedures
Run these three commands but substitute “contint.k8s.local” with the name of your cluster:
export KOPS_CLUSTER_NAME=contint.k8s.local
export KOPS_STATE_STORE=s3://$KOPS_CLUSTER_NAME-state
kops delete cluster –name contint.k8s.local –yes …
Continue reading “How Do You Delete a Kubernetes Cluster in AWS?”
Problem scenario
From a web browser these commands succeed (where x.x.x.x is the external IP address of the Linux VM serving the web service):
Test-NetConnection -ComputerName x.x.x.x -Port 80
Test-NetConnection -ComputerName x.x.x.x -Port 443
But when you open a web browser and go to the x.x.x.x IP address, but the page does not load. You may get an error message about it timing out or not being reached or available.
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