xsqian

# create a topic with specified partitons
kafka-topics --bootstrap-server xx.xx.xx.xx:39092 --create --partitions 2 --topic test-partitions
kafka-topics --bootstrap-server xx.xx.xx.xx:39092 --describe --topic test-partitions

# create a topic with default partitions
kafka-topics --bootstrap-server xx.xx.xx.xx:39092 --create  --topic test-def-partitions
kafka-topics --bootstrap-server xx.xx.xx.xx:39092 --describe --topic test-def-partitions

# alter the number of partitions of an existing topic
kafka-topics --bootstrap-server xx.xx.xx.xx:39092 --alter --topic test-def-partitions --partitions 3

xsqian

kubectl get pod --field-selector=status.phase==Succeeded

kubectl delete pod --field-selector=status.phase==Succeeded

kubectl delete pod --field-selector=status.phase==Failed

kubectl delete pods $(kubectl get pod --all-namespaces -o jsonpath='{.items[?(@.status.containerStatuses[*].state.waiting.reason=="CrashLoopBackOff")].metadata.name}')

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kubectl config set-context --current --namespace=<insert-namespace-name-here>
# Validate it
kubectl config view --minify | grep namespace:

xsqian

brew install hudochenkov/sshpass/sshpass

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sudo yum install golang -y

go version

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sudo amazon-linux-extras install docker
sudo systemctl enable docker
sudo systemctl start docker
sudo usermod -aG docker ec2-user  # allows you to run `docker` commands without `sudo`
sudo reboot

docker info

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sed 's/<search regex>/<replacement>/g' <input file> <output file>

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sudo dnf config-manager --add-repo=https://download.docker.com/linux/centos/docker-ce.repo

sudo dnf repolist -v

dnf list docker-ce --showduplicates | sort -r

sudo dnf install --nobest docker-ce

sudo systemctl disable firewalld

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!curl http://docker-registry.default-tenant.app.us-sales-32.iguazio-cd0.com/v2/_catalog | json_pp 

xsqian

echo red | base64 
# cmVkCg==
echo "cmVkCg==" | base64 -D
# red