A Technical I.T./DevOps Blog
Problem scenario
You are trying to use Kubernetes in AWS. You have installed kubectl and you run this command:
kubectl get svc
You receive this: ‘error: the server doesn’t have a resource type “svc”‘
You try again with a more verbose output. You run this command:
kubectl get svc -v=8
In the output you see messages like this: “Response Status: 401 Unauthorized in 73 milliseconds”
What should you do to use kubectl with AWS?
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Problem scenario
You are using Kubernetes in AWS. When using a kubectl command you get this error: “Connection error: Unable to connect to the server: getting credentials: exec: exit status 1 … Could not get token: AccessDenied: Access denied”
What should you do?
Possible Solution #1
Was the user who created the Kubernetes cluster a different user from the user that is configured with your AWS CLI?
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Problem scenario
You want to deploy Kubernetes to AWS. How do you use Amazon EKS to create a cluster with the AWS CLI?
Solution
Prerequisites
i. This assumes that your AWS CLI has been installed. If you need assistance with this, see this posting.
ii. This assumes that you have a role created. If you need assistance with this, see this posting.
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Continue reading “How Do You Use Amazon Elastic Kubernetes Service with the CLI?”
One of the following problem scenarios apply.
Problem scenario #1
You want an AWS user to be able to log into the web console and view EKS clusters. How do you do this?
OR
Problem scenario #2
You are using AWS and when you log into the AWS Console via a web browser with a user who is a member of a Group with two EKS policies,
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Problem scenario
You want to deploy a Kubernetes cluster in AWS. How do you use Amazon EKS with the web UI?
Solution
Prerequisites
i. Optional: It is recommended to create a separate VPC for each cluster (according to Amazon’s documentation here). If you need to create a VPC, see this posting.
ii. You need a Linux server with kubectl installed on it.
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Continue reading “How Do You Use Amazon Elastic Kubernetes Service with the Web UI?”
Problem scenario
You want to manually create a config file for Kubernetes. (You do not want to run aws eks update-kubeconfig –name foobar.) How do you do this?
Solution
These directions are most suited for Amazon EKS. But they could be adapted for clusters running in other environments (not just AWS). If you are using GCP, go to the very bottom of the directions and skip the rest.
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Continue reading “How Do You Create a config File for Kubernetes Manually?”
Problem scenario
You want to use Amazon EKS. You tried to run an “aws eks” command but got an error about the root user not being allowed to perform the operation. How do you create an IAM user account in AWS to run AWS CLI commands for EKS and log into the AWS web UI and view EKS clusters?
Solution
Prerequisite
This assumes you have a group that has the correct policies to enable EKS manipulation.
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Problem scenario
You use EKS to create a Kubernetes cluster. How do you create a group for AWS user accounts to enable them to manage Kubernetes clusters in AWS?
Solution
1. Log into the AWS web console.
2. Go here: https://console.aws.amazon.com/iam/home?
3. Go to Groups on the left.
4. Click the “Create New Group” button.
5. Enter a name (e.g., coolgroup).
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Problem scenario
You want to create a Kubernetes cluster in AWS via a RHEL server. What should you do?
Solution
This will deploy additional resources in your AWS account (not on to the RHEL server). It will cost money to follow these directions.
Prerequisites
i. Install and configure the AWS CLI (or awscli). If you need help, see this posting.
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Continue reading “How Do You Deploy a Kubernetes Cluster into AWS with a RHEL Server?”
Problem scenario
You want to manage Kubernetes (e.g., Amazon EKS) via a server in AWS. You want to install the aws-iam-authenticator on a Linux server. How do you do this?
Solution
1. To install aws-iam-authenticator go here to obtain the link that is relevant for your server. You will search the above link for “aws-iam-authenticator binary from Amazon S3”
2.
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Continue reading “How Do You Install The aws-iam-authenticator?”