Analogy between ships and Kubernetes Cluster.Kubernetes Cluster = Cargo Ships (Orange=Worker Node) and Control Ships (Red=Master Node)A worker node hosts applications (Containers)Many containers (same or different) can be on the same worker node (Cargo Ship).… Read More »Kubernetes Architecture
TerminologyUnderlay= Physical Network interconnected with L3 Routing Protocol (BGP) to provide a robust, fast, redundant network. No features are installed here. Overlay = Virtual Network running on top of Underlay. Allows host-IP to be much… Read More »VXLAN BGP EVPN—Symmetric IRB using unnumber IPv6 with Anycast Gateways (Templates)
Together these technologies (each is separately explained) form a very scalable, faster, more redundant, more mobile network with optical route paths compared to traditional networking. BGP (Border Gateway Protocol) is a routing protocol that enables… Read More »VXLAN BGP EVPN—Symmetric IRB using unnumber IPv6 with Anycast Gateways (Short explanation)
Get the Dell OS10 Files here.Get the Dell Sonic Files here. After unzipping them. Open GNS3 and add a new template. Choose Import an appliance file (.gns3a extension) and choose the switch from the folder… Read More »Installing Dell OS10 Appliance or Sonic in GNS3
Logon Proxmox machine in terminal ssh rootDownload latest ubuntu cloud LTS x64 image–> wget https://cloud-images.ubuntu.com/jammy/current/jammy-server-cloudimg-amd64.img From the same command-line, create a virtual machine with a ProxMox VMID of 990, with 2GB of RAM,1 vcpu, and… Read More »CloudInit with Proxmox
VNET = Azure Virtual NetworkA virtual network (VNet) allows you to specify an IP address range for the VNet, add subnets, associate network security groups (NSG), and configure route tables. Azure Subnet= A range of… Read More »Personal Azure Cheat Sheet
In order to no longer get the message that your certificate is invalid (SelfSigned Certificate made during installation) when connecting to the ProxMox Virtual Environment (PVE), a certificate from an official instance is required. The… Read More »Let’s Encrypt for Proxmox
A Single Kubernetes Cluster housing Prod/Dev/Staging @ the same time has some serious issues.
A Name Space consists of a Network Stack sharing: NIC’s, routing tables, forwarding rules, Firewall Rules, L4 Ports (sockets)… Each OS has by default a global (also called root or host) Namespace. In Kubernetes you… Read More »Kubernetes POD/ContainerNetworking