jenkins-cicd-com-gitflow-no-kubernetes

My notes about the DevOps course with K8S and Jenkins. This deploys a Kind cluster (Kubernetes In Docker) with Nginx Ingress, Jenkins and Helm.

Create

Clone this repository and run:

make create

This creates a cluster with Kind. Please, ensure the api-server node (container) has the address 172.18.0.2, because this is the address configured in kind/config.yaml.

docker inspect kind-control-plane --format='{{range .NetworkSettings.Networks}}{{.IPAddress}}{{end}}'

If not, destroy the cluster and create it again.

Destroy

Please, run the following command:

make destroy

Or you can simply delete Kind containers like this:

docker rm -f $(docker ps -qa --filter label=io.x-k8s.kind.cluster=kind)

Network considerations

If Kind cluster is running inside of another host, such as a VM, some redirects may be required:

kubectl get ingress -A    # check ingress's address
iptables -t nat -A PREROUTING -p tcp -d LOCAL_IP_ADDRESS --dport 80 -j DNAT --to-destination INGRESS_ADDRESS:80
iptables -t nat -A POSTROUTING -p tcp -d INGRESS_ADDRESS --dport 80 -j MASQUERADE
iptables -A FORWARD -p tcp -d INGRESS_ADDRESS --dport 80 -j ACCEPT

Please, check utils/redirect-to-ingress.sh and utils/redirect-to-ingress.service.