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Cilium - Bringing the BPF Revolution to Kubernetes Networking and Security
Cilium provides API-aware networking and security for microservices using BPF and XDP, replacing traditional mechanisms like iptables with a faster and more flexible solution. It integrates with service meshes and supports multi-cluster and multi-cloud connectivity, ensuring security through identity-based policies. Cilium also enhances performance with BPF-based load balancing and API-aware security for applications in various deployment environments, including Kubernetes.
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Introduction to Cilium, an API aware networking solution for microservices leveraging BPF and XDP, focusing on cloud-native security and multi-cluster capabilities.
BPF/XDP offers a 10x performance enhancement over traditional IPVS for load balancing.
Cilium as a CNI plugin ensures versatile networking through encapsulation and direct routing integration with cloud routers.
Details on BPF-based `iptables kube-proxy` for more efficient Kubernetes service implementation and load balancing.
Discusses identity-based security, traditional vs. API aware security, enhancing security measures for service communications.
Details on connecting multiple clusters and service mesh integration, ensuring telemetry, load balancing, and security measures like mutual TLS.
Summary of Cilium's capabilities including its role as CNI and CMM plugin and its security and load-balancing features.
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Cilium - Bringing the BPF Revolution to Kubernetes Networking and Security
- 1. Cilium API Aware Networking& Network Security for Microservices using BPF & XDP
- 2. FUNDAMENTALS • BPF –Next Generation Datapath – Replaces iptables, fast, flexible, powerful – Packet, API, process visibility • Cloud Native Security – Identity-based – API & DNS Aware • Servicemesh Integration – Uses Envoy and co-operates with Istio – Secures and accelerates sidecar proxies • Multi Cluster and Multi Cloud – Connects multiple clusters across providers
- 6. BPF/XDP Load Balancing 10xperformance over IPVS
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- 13. Cilium as CNIPlugin
- 14. Networking Model: Encapsulation orDirect Routing Mode I: Encapsulation Mode II: Direct Routing Node 1 Node 2 Node 3 L3 Network Integrations: • Cloud routers • kube-router, BIRD, … • No further dependencies Node 1 Node 2 Node 3 VXLAN VXLAN VXLAN
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- 16. BPF-based iptables kube-proxy KubernetesServices Implementation • Linear List • All rules have to be replaced as a whole • Per-CPU Hash table
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- 18. Pod barL3/L4 GET /healthz GET/jobs/{id} GET /applicants/{job-id} POST /jobs API exposed exposed exposed GET /jobs/331 Traditional API Unaware Security Pod foo GET /jobs/{id} TLS Allow foo to bar on port 80
- 19. L3/L4 GET /healthz GET /jobs/{id} GET/applicants/{job-id} POST /jobs API GET /jobs/331 API Aware Security GET /jobs/{id} Allow GET /jobs/.* from identity foo TLS Pod barPod foo
- 20. Identity based security 1.1.1.11.1.1.2 1.1.1.3 1.1.1.4 1.1.1.5 1.1.1.6 1.1.1.5 1.1.1.6 1.1.1.1 1.1.1.2 1.1.1.3 1.1.1.4 Allow ToAllow To
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- 25. • Telemetry (Tracing) •Retries • Load Balancing (HTTP/L7) • Mutual TLS • Authorization • …
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- 31. Cilium Summary • CNIand CMM plugin • Kubernetes, Docker, Mesos • Security • Secures ingress, east-west, and egress. • Label, DNS, or CIDR based. Identity enforcement. • API aware (HTTP, Kafka, gRPC) • Load-balancing • Servicemesh integration • Multi Cluster / Multi Cloud Provider • Connect multiple clusters with label based policy enforcement
- 32. @ciliumproject http://github.com/cilium/cilium Thank You! Q&A GettingStarted: http://cilium.io/try