Instrumentation and cAdvisor, with David Ashpole
Released on the same day as Kubernetes, cadvisor is a container monitoring daemon that collects metrics and serves them to monitoring tools. It’s built into the Kubelet, and underpins many components in Kubernetes, such as eviction and autoscaling. David Ashpole of Google Cloud is TL of Kubernetes SIG Instrumentation, and the maintainer of cadvisor; he joins Adam and Craig this week to explain where instrumentation fits in the stack, and what you should do as a Kubernetes maintainer vs. a cluster administrator. Do you have something cool to share? Some questions? Let us know: web: kubernetespodcast.com mail: kubernetespodcast@google.com twitter: @kubernetespod Chatter of the week In Craig’s neighbourhood: Books More books Some less popular items Masks Archie the Mammoth National Ice Cream Day Carmel Caramel News of the week GKE Ingress features: BackendConfig CRD Cloud CDN Backend service timeout Connection draining timeout HTTP access logging Identity-Aware Proxy (IAP) Session affinity User-defined request headers Cloud Armor security policies (Beta) FrontendConfig CRD (Beta) Custom GCLB health checks (Beta) SSL policies (Beta) Exposing services on GKE OpenShift 4.5 OKD4 Spring Cloud Data Flow for Kubernetes from VMware; part of the Spring Runtime package k8spin.cloud is closing and making their code open source Review of k8spin from launch Custom Pod Autoscaler (and docs) by Jamie Thompson Envoy 1.15 round-up from Tetrate; release notes from the team Fluent Bit 1.5 summary at the CNCF k3d v3.0 and new web site Best practices for creating a highly available GKE cluster Recommended alerts for AKS Ingress support added to AWS App Mesh Platform9 adds new apps to their Managed Kubernetes Service Episode 88, with Madhura Maskasky CVE-2020-8557: Node disk DOS by writing to container /etc/hosts CVE-2020-8559: Privilege escalation from compromised node to cluster Alcide write-up Threat Alert: Attacker Building Malicious Images Directly on Your Host from Aqua Security Certified Kubernetes Security Specialist (CKS) coming in November Sign up for a free pass to Virtual KubeCon EU keynotes Diving Into Istio 1.6 Certificate Rotation by Christian Posta Links from the interview SIG Instrumentation inodes Eviction on inodes cgroups cadvisor Launched on the same day as Kubernetes Monitoring metrics with Prometheus Victor Marmol and Vish Kannan Episode 22, with Dawn Chen CRI Resource metrics pipeline Heapster Metrics Server kube-state-metrics Managing Your Costs on Kubernetes by Karl Stoney from Autotrader Episode 52, with Russell Warman and Karl Stoney Metrics Stability Framework Structured logging Distributed tracing in Kubernetes Node out of memory eviction Pod priority David Ashpole on Twitter