Cilium

Cilium 1.19.3 is a cloud-native Kubernetes networking, security, and observability solution powered by eBPF. It provides high-performance container networking, service connectivity, network policy enforcement, and deep visibility for Kubernetes workloads.

The solution supports common Kubernetes networking workflows including CNI installation, pod-to-pod communication, service load balancing, network security policies, and observability using Hubble. It is ideal for Kubernetes clusters, cloud-native applications, microservices platforms, and secure container networking environments.

Version: Cilium 1.19.3

Features of Cilium 1.19.3:

• eBPF-based Kubernetes CNI for high-performance networking.
• Secure pod-to-pod and service-to-service communication.
• Kubernetes NetworkPolicy support for workload security.
• Service load balancing and transparent traffic management.
• Observability support using Hubble.
• Supports CLI-based installation, validation, and troubleshooting.
• Suitable for Kubernetes clusters on Ubuntu 26.04 Azure environments.

Usage instructions for Cilium 1.19.3
$ sudo su
$ cilium install --version 1.19.3 --set ipam.mode=kubernetes
$ cilium status --wait
$ cilium connectivity test --single-node

Access and testing:
Cilium is managed through Kubernetes and the Cilium CLI.

Check Cilium status:
cilium status

Check Cilium version:
cilium version

Check Kubernetes pods:
kubectl get pods -A

Optional Hubble UI:
cilium hubble enable --ui
cilium hubble ui

Default Ports:

• No default public web port is required for Cilium.
• Kubernetes API: 6443/TCP
• Cilium VXLAN: 8472/UDP
• Cilium Geneve: 6081/UDP
• Hubble: 4244/TCP
• Hubble Relay: 4245/TCP
• Optional Hubble UI via port-forward: 12000/TCP

Credentials: No default username or password is required for Cilium. Access is managed through Kubernetes kubeconfig and cluster permissions.

Disclaimer: Cilium 1.19.3 is provided “as is” under applicable open-source licenses. Users are responsible for proper Kubernetes configuration, network security rules, access control, and validation of workload connectivity. This solution is best suited for Kubernetes networking, security policy enforcement, and observability in development and production environments.