Introduction
🧠In the world of DevOps, understanding the ports used by various tools is crucial for seamless communication, security, and troubleshooting. Whether you're setting up CI/CD pipelines, managing containers, or monitoring infrastructure, knowing which ports are in use can save you from headaches down the line. In this blog, we’ll explore the common ports used by popular DevOps tools and their significance.
1. Jenkins (Continuous Integration/Continuous Deployment)
Port: 8080 (Default)
Jenkins, the widely-used automation server, typically runs on port 8080. This port is used for accessing the Jenkins web interface.
👉Related Link: [Jenkins Official Documentation](jenkins.io/doc)
👉Description:Jenkins is an open-source automation server that helps automate the parts of software development related to building, testing, and deploying.
2. Docker (Containerization)
Docker uses port 2375 for unencrypted communication with the Docker daemon and port 2376 for encrypted communication (TLS). Additionally, containers often expose ports 80 (HTTP) and 443 (HTTPS) for web applications.
👉Related Link: [Docker Official Documentation](docs.docker.com)
👉Description: Docker is a platform for developing, shipping, and running applications in containers.
3. Kubernetes (Container Orchestration)
Ports: 6443 (API Server), 10250 (Kubelet), 30000-32767 (NodePort Services)
Kubernetes uses port 6443 for the API server, which is the central management point.
👉Related Link: [Kubernetes Official Documentation](kubernetes.io/docs/home)
👉Description: Kubernetes is an open-source platform for automating deployment, scaling, and operations of application containers.
4. Prometheus (Monitoring)
Port: 9090 (Default)
Prometheus, a popular monitoring and alerting tool, uses port 9090 for its web interface and API. This port is essential for querying metrics and visualizing data.
👉Related Link:[Prometheus Official Documentation](prometheus.io/docs)
👉Description: Prometheus is an open-source systems monitoring and alerting toolkit.
5. Grafana (Visualization)
Port: 3000 (Default)
Grafana, often used alongside Prometheus, runs on port 3000. This port is used to access the Grafana dashboard for creating and viewing visualizations.
👉Related Link:[Grafana Official Documentation](grafana.com/docs)
👉Description: Grafana is an open-source platform for monitoring and observability.
6. GitLab (Version Control & CI/CD)
Ports: 80 (HTTP), 443 (HTTPS), 22 (SSH)
GitLab uses port 80 for HTTP, port 443 for HTTPS, and port 22 for SSH-based Git operations. These ports are critical for accessing repositories and CI/CD pipelines.
👉Related Link: [GitLab Official Documentation](docs.gitlab.com)
👉Description: GitLab is a complete DevOps platform that provides a Git repository manager, CI/CD pipelines, and more.
7. Ansible (Configuration Management)
Port: 22 (SSH)
Ansible primarily uses port 22 for SSH communication with remote nodes. This port is essential for executing playbooks and managing configurations.
👉Related Link: [Ansible Official Documentation](docs.ansible.com)
👉Description: Ansible is an open-source tool for automation, configuration management, and application deployment.
8. Terraform (Infrastructure as Code)
Ports: Varies (Depends on Provider)
Terraform itself doesn’t use specific ports, but it interacts with cloud providers (e.g., AWS, Azure) that use their own ports. For example, AWS uses port 443 for API communication.
👉Related Link: [Terraform Official Documentation](terraform.io/docs)
👉Description: Terraform is an open-source infrastructure as code tool for building, changing, and versioning infrastructure.
9. Nginx (Web Server & Reverse Proxy)
Ports: 80 (HTTP), 443 (HTTPS)
Nginx, often used as a reverse proxy or load balancer in DevOps, uses port 80 for HTTP and port 443 for HTTPS traffic.
👉Related Link: [Nginx Official Documentation](nginx.org/en/docs)
👉Description: Nginx is a high-performance web server, reverse proxy, and load balancer.
10. Elasticsearch (Logging & Search)
Port: 9200 (HTTP), 9300 (Transport)
Elasticsearch uses port 9200 for HTTP API communication and port 9300 for node-to-node communication in a cluster.
👉Related Link: [Elasticsearch Official Documentation](elastic.co/guide/index.html)
👉Description: Elasticsearch is a distributed search and analytics engine.
🔰Conclusion :-
Understanding the ports used by DevOps tools is essential for configuring firewalls, troubleshooting connectivity issues, and ensuring secure communication. By familiarizing yourself with these ports, you can streamline your DevOps workflows and avoid common pitfalls.
If you found this guide helpful, feel free to share it with your network. For more DevOps insights, check out my other blogs on [Hashnode](hashnode.com/surbhi6).
Happy DevOps-ing! 🚀
Author: surbhi kaushik
Blog: surbhi6.hashnode
Connect with me on linkedin.com/in/subhik66