Mastering the tools of modern software development is crucial for any backend developer. This blog post covers essential commands for Maven, Docker, Kubernetes, and Helm, often encountered in real-world development and deployment scenarios.
Maven Commands
| Maven Command |
Description |
mvn clean install -Dmaven.test.skip=true |
Generates a JAR file inside the target folder, skipping tests. |
mvn spring-boot:run |
Starts a Spring Boot Maven project. |
mvn spring-boot:build-image |
Generates a Docker image using Buildpacks without needing a Dockerfile. |
mvn compile jib:dockerBuild |
Creates a Docker image using Google Jib without needing a Dockerfile. |
Docker Commands
| Docker Command |
Description |
docker build . -t gavebegin/accounts:s4 |
Builds a Docker image from a Dockerfile. |
docker run -p 8080:8080 gavebegin/accounts:s4 |
Runs a Docker container from a given image. |
docker images |
Lists all Docker images. |
docker image inspect image-id |
Displays detailed information about an image. |
docker image rm image-id |
Removes an image. |
docker image push docker.io/gavebegin/accounts:s4 |
Pushes an image to a registry. |
docker image pull docker.io/gavebegin/accounts:s4 |
Pulls an image from a registry. |
docker ps |
Lists running containers. |
docker ps -a |
Lists all containers, including stopped ones. |
docker container start container-id |
Starts a stopped container. |
docker container pause container-id |
Pauses a container. |
docker container unpause container-id |
Unpauses a container. |
docker container stop container-id |
Stops a running container. |
docker container kill container-id |
Kills a running container immediately. |
docker container restart container-id |
Restarts a container. |
docker container inspect container-id |
Inspects container details. |
docker container logs container-id |
Fetches container logs. |
docker container logs -f container-id |
Follows container logs. |
docker container rm container-id |
Removes a container. |
docker container prune |
Removes all stopped containers. |
docker compose up |
Creates and starts containers using a docker-compose file. |
docker compose down |
Stops and removes containers created via docker-compose. |
docker compose start |
Starts containers defined in a docker-compose file. |
docker run -p 3306:3306 --name accountsdb -e MYSQL_ROOT_PASSWORD=root -e MYSQL_DATABASE=accountsdb -d mysql |
Creates a MySQL container. |
docker run -p 6379:6379 --name gavebeginredis -d redis |
Creates a Redis container. |
docker run -p 8080:8080 -e KEYCLOAK_ADMIN=admin -e KEYCLOAK_ADMIN_PASSWORD=admin quay.io/keycloak/keycloak:22.0.3 start-dev |
Creates a Keycloak container. |
Apache Benchmark (ab) Command
| Command |
Description |
ab -n 10 -c 2 -v 3 http://localhost:8072/gavebegin/cards/api/contact-info |
Load tests an API by sending 10 requests with concurrency level 2. |
Kubernetes Commands
| Kubernetes Command |
Description |
kubectl apply -f filename |
Deploys resources defined in a YAML file. |
kubectl get all |
Lists all resources in the cluster. |
kubectl get pods |
Lists all pods. |
kubectl get pod pod-id |
Describes a specific pod. |
kubectl describe pod pod-id |
Shows detailed information about a pod. |
kubectl delete pod pod-id |
Deletes a pod. |
kubectl get services |
Lists all services. |
kubectl get service service-id |
Describes a specific service. |
kubectl describe service service-id |
Shows detailed information about a service. |
kubectl get nodes |
Lists all nodes. |
kubectl get node node-id |
Describes a specific node. |
kubectl get replicasets |
Lists all replica sets. |
kubectl get replicaset replicaset-id |
Describes a specific replica set. |
kubectl get deployments |
Lists all deployments. |
kubectl get deployment deployment-id |
Describes a specific deployment. |
kubectl get configmaps |
Lists all ConfigMaps. |
kubectl get configmap configmap-id |
Describes a specific ConfigMap. |
kubectl get events --sort-by=.metadata.creationTimestamp |
Displays events sorted by creation time. |
kubectl scale deployment accounts-deployment --replicas=1 |
Scales a deployment. |
kubectl set image deployment gatewayserver-deployment gatewayserver=gavebegin/gatewayserver:s11 --record |
Updates a deployment's image. |
kubectl rollout history deployment gatewayserver-deployment |
Shows rollout history of a deployment. |
kubectl rollout undo deployment gatewayserver-deployment --to-revision=1 |
Rolls back to a specific revision. |
kubectl get pvc |
Lists persistent volume claims (PVCs). |
kubectl delete pvc data-happy-panda-mariadb-0 |
Deletes a PVC. |
Helm Commands
| Helm Command |
Description |
helm create [NAME] |
Creates a new chart. |
helm dependencies build |
Recompiles chart dependencies. |
helm install [NAME] [CHART] |
Installs a chart. |
helm upgrade [NAME] [CHART] |
Upgrades a release. |
helm history [NAME] |
Shows revision history. |
helm rollback [NAME] [REVISION] |
Rolls back a release. |
helm uninstall [NAME] |
Uninstalls a release. |
helm template [NAME] [CHART] |
Renders chart templates locally. |
helm list |
Lists all Helm releases. |
Mastering these commands will give you confidence in building, containerizing, deploying, and managing applications in production environments. Bookmark this page as a quick reference for your day-to-day development journey. Happy coding!
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