sudo su
yum update -y
yum install docker -y
systemctl enable docker
systemctl start docker
systemctl status docker
docker — version
conntrack :- In Kubernetes, “conntrack” refers to the Connection Tracking system used for network traffic management within the cluster. Conntrack is a kernel feature that keeps track of network connections and their states. It allows the kernel to maintain information about network connections, such as source IP addresses, destination IP addresses, ports, and connection states (established, closed, etc.)
yum install conntrack -y
curl -LO https://storage.googleapis.com/minikube/releases/latest/minikube-linux-amd64
sudo install minikube-linux-amd64 /usr/local/bin/minikube
/usr/local/bin/minikube start --force --driver=docker
After that we can check the minikube version ,
/usr/local/bin/minikube versionStep 5 — Install kubectl command , given permission to kubectl and check version of it.
curl -LO "https://dl.k8s.io/release/$(curl -L -s https://dl.k8s.io/release/stable.txt)/bin/linux/amd64/kubectl"
sudo install -o root -g root -m 0755 kubectl /usr/local/bin/kubectl
/usr/local/bin/kubectl version
yum install git -y
cd /opt
git clone https://github.com/SushantOps/SpringBootOnK8S_PS.git
To create the persistent database and other services.
/usr/local/bin/kubectl get pods
/usr/local/bin/kubectl create -f db-deployment.yaml
kubectl get pods
check database and it’s content so go inside the container as , ( password is root ) so we can see the db create from the container .
/usr/local/bin/kubectl exec -it <POD_NAME>/bin/bash
mysql -u root -p
After that exit from the shell also container.
Install maven now and check version.
yum install maven -y
mvn -vStep 8 — Create an image from Dockerfile as ,
docker build -t <dockerhub_name>/<image_name> .
docker build -t sushantkapare1717/springboot-crud-k8s:1.0 .
#check the docker images
docker images
Now push that image to dockerhub so first you have to login to dockerhub and then push that image to docker hub
docker login
docker push sushantkapare1717/springboot-crud-k8s
/usr/local/bin/kubectl apply -f app-deployment.yaml
/usr/local/bin/kubectl get pods
/usr/local/bin/kubectl get svc
now check minikube ip as,
/usr/local/bin/minikube ipPort forwarding is a networking technique used to redirect network traffic from one port on a host to another port on a different host or the same host. In the context of Kubernetes, port forwarding allows you to access services running inside a Kubernetes cluster from your local machine or another remote host.
/usr/local/bin/kubectl port-forward --address 0.0.0.0 svc/springboot-crud-svc 8080:8080 &
Now go to the database in the server and check the entries done by you in the SQL database.
/usr/local/bin/kubectl exec -it <mysql_pod_name>/bin/bashstep 11 — Now we will open the Dashboard of K8S. Inside EC2 our minikube is running so we are setting a proxy for all the local address.The proxy server is started on port 8001.
/usr/local/bin/kubectl proxy --address='0.0.0.0' --accept-hosts='^*$'
Now open another terminal and run below command.
/usr/local/bin/minikube dashboard
http:https://127.0.0.1:34927/api/v1/namespaces/kubernetes-dashboard/services/http:kubernetes-dashboard:/proxy/
change the IP address to your IP address and port mention as 8001
e.g http:https://54.190.118.228:8001/api/v1/namespaces/kubernetes-dashboard/services/http:kubernetes-dashboard:/proxy/So you can access the k8s resources on dashboard as ,
