Configuring Flannel Network Plugin in Kubernetes
Kubernetes Network Communication Requirements
Kubernetes requires efficient network communication between pods across nodes without NAT translation. The key communication scenarios include:
Intra-pod container communication via loopback
Direct pod-to-pod communication without NAT
Pod-to-service communication through IPVS/iptables
External clie ...
Posted on Sun, 18 Oct 2026 16:07:14 +0000 by alecodonnell
Deploying a Local Kubernetes Cluster with Kubeadm on CentOS
Infrastructure Requirements
A stable three-node architecture is recommended: one control-plane host and two compute nodes. Each virtual machine must meet baseline specifications including minimum 2 GB RAM, dual-core processors, unique MAC addresses, and unrestricted internal networking. Swap partitions must be disabled prior to component deploy ...
Posted on Sat, 26 Sep 2026 16:48:52 +0000 by adamp1
Migrating Kubernetes Cluster Networking from Flannel to Calico
Preparing the Calico Configuration
To begin the migration, download the Calico manifest that utilizes etcd as the datastore. This is common in custom-provisioned clusters where etcd is managed independently.
curl https://docs.projectcalico.org/manifests/calico-etcd.yaml -o calico-config.yaml
Configuring etcd Secrets and Endpoints
Calico needs ...
Posted on Thu, 06 Aug 2026 16:05:04 +0000 by Marijnn