Scaling a Multi-Tenant k8s Cluster in a Telco Pablo Moncada October 28, 2020 About MasMovil group ● 4th telecom company in Spain ● Provides voice and broadband services to +12M customers ● Several Services +3k CPU +2k Mem +5TB Nodes +300 kube-proxy replacement NetworkPolicy logging Multi-cluster DNS Aware NetworkPolicy Increased Istio security External Services TLS visibility Performance

Kubernetes cluster using CSI Driver on DELL EMC PowerFlex September 2021 H18899 White Paper Abstract This white paper describes the deployment of a SUSE Rancher Kubernetes Cluster on the Dell PowerFlex Engineering Validated Copyright 2 SUSE Rancher and RKE Kubernetes cluster using CSI Driver on DELL EMC PowerFlex White Paper The information in this publication is provided is subject to change without notice. Contents 3 SUSE Rancher and RKE Kubernetes cluster using CSI Driver on DELL EMC PowerFlex White Paper Contents Executive Summary ........

Advanced Networking Cluster Mesh Operations Istio Concepts Component Overview Terminology Networking Network Security eBPF Datapath Observability Kubernetes Integration Multi-Cluster (Cluster Mesh) Getting Troubleshooting Component & Cluster Health Observing Flows with Hubble Observing flows with Hubble Relay Connectivity Problems Policy Troubleshooting etcd (kvstore) Cluster Mesh Troubleshooting Symptom clusters? What is the 95th and 99th percentile latency between HTTP requests and responses in my cluster? Which services are performing the worst? What is the latency between two services? Security observability

Advanced Networking Cluster Mesh Operations Istio Concepts Component Overview Terminology Networking Network Security eBPF Datapath Observability Kubernetes Integration Multi-Cluster (Cluster Mesh) Getting Troubleshooting Component & Cluster Health Observing Flows with Hubble Observing flows with Hubble Relay Connectivity Problems Policy Troubleshooting etcd (kvstore) Cluster Mesh Troubleshooting Symptom clusters? What is the 95th and 99th percentile latency between HTTP requests and responses in my cluster? Which services are performing the worst? What is the latency between two services? Security observability

Terminology Networking Network Security eBPF Datapath Observability Kubernetes Integration Multi-Cluster (Cluster Mesh) Getting Help FAQ Slack GitHub Training Enterprise support Security Bugs Operations Scalability report Performance Evaluation Setup Evaluation Results Tuning Troubleshooting Component & Cluster Health Observing Flows with Hubble Observing flows with Hubble Relay Connectivity Problems Policy clusters? What is the 95th and 99th percentile latency between HTTP requests and responses in my cluster? Which services are performing the worst? What is the latency between two services? Security observability

Overview Terminology Networking Network Security eBPF Datapath Kubernetes Integration Multi-Cluster (Cluster Mesh) Getting Help FAQ Slack GitHub Security Bugs Operations System Requirements Summary Scalability report Performance Evaluation Setup Evaluation Results Tuning Troubleshooting Component & Cluster Health Observing Flows with Hubble Observing flows with Hubble Relay Connectivity Problems Policy clusters? What is the 95th and 99th percentile latency between HTTP requests and responses in my cluster? Which services are performing the worst? What is the latency between two services? Security observability

Agent Monitoring & Metrics Installation cilium-agent cilium-operator Troubleshooting Component & Cluster Health Connectivity Problems Policy Troubleshooting Symptom Library Useful Scripts Reporting a problem microservices. Traditional Linux network security approaches (e.g., iptables) filter on IP address and TCP/UDP ports, but IP addresses frequently churn in dynamic microservices environments. The highly volatile additional challenge is the ability to provide accurate visibility as traditional systems are using IP addresses as primary identification vehicle which may have a drastically reduced lifetime of just a

Troubleshooting Monitoring & Metrics Installation cilium-agent cilium-operator Troubleshooting Component & Cluster Health Connectivity Problems Policy Troubleshooting Symptom Library Useful Scripts Reporting a problem microservices. Traditional Linux network security approaches (e.g., iptables) filter on IP address and TCP/UDP ports, but IP addresses frequently churn in dynamic microservices environments. The highly volatile additional challenge is the ability to provide accurate visibility as traditional systems are using IP addresses as primary identification vehicle which may have a drastically reduced lifetime of just a

Exported Metrics Cilium as a Kubernetes pod Cilium as a host-agent on a node Troubleshoo�ng Component & Cluster Health Connec�vity Problems Policy Troubleshoo�ng Automa�c Diagnosis Symptom Library Useful Scripts microservices. Tradi�onal Linux network security approaches (e.g., iptables) filter on IP address and TCP/UDP ports, but IP addresses frequently churn in dynamic microservices environments. The highly vola�le An addi�onal challenge is the ability to provide accurate visibility as tradi�onal systems are using IP addresses as primary iden�fica�on vehicle which may have a dras�cally reduced life�me of just a few

clear view of what end users are doing, ensure authentication, authorization, and auditing for both cluster and data security, and so forth. In general, the complete ecosystem of Kyuubi falls into the hierarchies module plays the role of a unified gateway. The server enables simplified, secure access to any cluster resource through an entry point to deploy different workloads for end(remote) users. Behind this The resource acquirement and data and metadata access all happen within their own engine. Thus, cluster managers and storage providers can easily guarantee data and resource security. Besides, Kyuubi also