Tag: Public Cloud
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Identifying values for the Azure Policy field parameter
In Azure, you can use Azure Policy with its field parameter to check for or enforce certain Azure resource configurations. For instance, the built-in policy “Allowed virtual machine size SKUs” uses the field parameter to restrict the available VM SKUs. This is especially useful for not accidentally provisioning very expensive VM SKUs like the ones…
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Azure Load Balancer Health Event Logs
In February, Microsoft announced the general availability of the Azure Load Balancer health event logs. -> https://azure.microsoft.com/en-us/updates?WT.mc_id=AZ-MVP-5000119&id=481818 Those health event logs are part of the diagnostic logs of an Azure Load Balancer As seen in the screenshot above, I have configured them on the Azure Load Balancer, part of my Azure Kubernetes Service cluster, and…
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Using Cilium Hubble Exporter to log blocked egress traffic on Azure Kubernetes Service
In one of my previous blog posts, I covered how to do egress traffic blocking with Cilium bring-your-own CNI on Azure Kubernetes Service -> https://www.danielstechblog.io/egress-traffic-blocking-with-cilium-cluster-wide-network-policies-on-azure-kubernetes-service/ Today we look into Cilium Hubble Exporter which lets us write Hubble flows to the Cilium agent log output. Thus, Hubble flows can be collected by the logging solution running…
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Egress traffic blocking with Calico global network policies on Azure Kubernetes Service
In my last blog post, I covered how to do egress traffic blocking with Cilium bring-your-own CNI on Azure Kubernetes Service as Azure CNI powered by Cilium does not officially support Cilium cluster-wide network policies and Cilium CIDR groups. -> https://www.danielstechblog.io/egress-traffic-blocking-with-cilium-cluster-wide-network-policies-on-azure-kubernetes-service/ In addition to the Cilium option on Azure Kubernetes Service, there has been and…
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Egress traffic blocking with Cilium cluster-wide network policies on Azure Kubernetes Service
Today, we talk about how to block egress traffic with Cilium cluster-wide network policies on Azure Kubernetes Service. For this, we need an Azure Kubernetes Service cluster with Cilium installed via the bring-your-own CNI approach. Azure CNI powered by Cilium unfortunately only partially supports Cilium network policies. However, Cilium cluster-wide network policies and Cilium CIDR…
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Use Fluent Bit for Kubernetes events gathering on Azure Kubernetes Service
For a while now Fluent Bit has a new input plugin that allows us to gather Kubernetes events, modify, and ingest them into the logging backend. -> https://docs.fluentbit.io/manual/pipeline/inputs/kubernetes-events Today we look at how to configure and deploy Fluent Bit to gather Kubernetes events on an Azure Kubernetes Service cluster and ingest them into an Azure…