How to install/upgrade/downgrade kubectl in Linux (Ubuntu)?

To install the latest version:

curl -LO "https://dl.k8s.io/release/$(curl -L -s https://dl.k8s.io/release/stable.txt)/bin/linux/amd64/kubectl"
curl -LO "https://dl.k8s.io/$(curl -L -s https://dl.k8s.io/release/stable.txt)/bin/linux/amd64/kubectl.sha256"
echo "$(<kubectl.sha256) kubectl" | sha256sum --check
sudo install -o root -g root -m 0755 kubectl /usr/local/bin/kubectl
kubectl version --client
kubectl version

To install a specific (v1.19.0) version:

curl -LO "https://dl.k8s.io/release/v1.19.0/bin/linux/amd64/kubectl"
curl -LO "https://dl.k8s.io/v1.19.0/bin/linux/amd64/kubectl.sha256"
echo "$(<kubectl.sha256) kubectl" | sha256sum --check
sudo install -o root -g root -m 0755 kubectl /usr/local/bin/kubectl
kubectl version --client
kubectl version

This will install kubectl client. Run minikube start to install kubectl server.

Comments

AWS Route53 - Private Hosted Zone

AWS - Error - An error occurred (ExpiredToken) when calling the DescribeStacks operation: The security token included in the request is expired

Error: An error occurred (ExpiredToken) when calling the DescribeStacks operation: The security token included in the request is expired. Reason: It occurred when I ran a MAKE command with a profile having expired token (security credentials) Fix: Generate new security credentials (aws sts assume-role) and run the command again

High availability (Multi-AZ) for Amazon RDS

There is something called failover technology in Amazon. AWS RDS's Multi-AZ deployment uses this technology. If you enable Multi-AZ for an RDS DB, say MySQL DB, RDS automatically creates a standby replica in a different AZ. If the primary DB instance is in AZ-1A, then RDS creates a standby replica in AZ-1B (for example). Suppose I add a new row to a table in the primary DB, then the same row is added, almost in the same time, in the standby replica. This is called as synchronous replication . Thus, standby replicas are useful during DB instance failure/ AZ disruption . How? Because, there is no need to create a backup later because the backup has already been created. This gives high availability during planned system maintenance. Normal backup operation - I/O activities are blocked in the primary database Automated backup operation (standby replica) - I/O activities are not blocked This standby replica is not similar to read replica (which is used for disaster recovery). S...

Ayyappu MK

Search This Blog