Case Study: Michelin gains network visibility and zero-downtime CNI consolidation with Cilium from CNCF

Michelin migrates 70–80 clusters to Cilium in 2 months with zero downtime

Michelin, the global automotive company, faced significant challenges with network visibility and complexity in its Kubernetes platform. The company was operating two different CNI plugins, which created operational difficulties and left the team with almost no ability to troubleshoot network issues. Additionally, their security team required DNS-based egress policies to control external service access, a feature their existing CNIs could not provide.

The Cloud Native Computing Foundation's Cilium was selected as the solution to consolidate the network layer. The implementation across 70-80 clusters was completed in about two months with zero customer-impacting downtime. As a result, Michelin gained full network observability through Hubble, implemented the required security policies, and eliminated CNI-related failures, achieving complete stability for over 500 applications.

Michelin