#UNIVERSE SANDBOX 2 DEMO LINUX INSTALL#
#UNIVERSE SANDBOX 2 DEMO LINUX WINDOWS#

Set in a backdrop of high fantasy, players will venture into a vast new world to explore and tame the wilderness. This illustrates how virtual machine traffic can be load-balanced via a service.Ashes of Creation is an upcoming MMORPG by Intrepid Studios. In this blog post we used MetalLB to expose a service using an external IP assigned to a virtual machine. Such addresses are free, and work fine as long as you’re only providing cluster services to your LAN. Alternatively, if you’re running on a private cluster, you can use one of the private IP Address spaces (a.k.a RFC1918 addresses).If you’re running a bare-metal cluster in a shared host environment, you need to first reserve this IP Address pool from your hosting provider.IP Ranges for MetalLB: getting IP Address pools allocation for MetalLB depends on your cluster environment:.

#UNIVERSE SANDBOX 2 DEMO LINUX INSTALL#

User privileges: you should have cluster-admin privileges on the cluster - in order to install MetalLB.Moving outside the demo example, one who would like use MetalLB on their real life cluster, should also take other considerations in mind: Note that it may take a short while for the URL to work after setting the service. When creating the LoadBalancer typed service, we need to remember annotating the address-pool we want to useĪddresspool-sample1 and also add the selector metallb-service: nginx: Deploying clusterĬat <

#UNIVERSE SANDBOX 2 DEMO LINUX WINDOWS#

On macOS and Windows however, docker does not expose the docker network to the host, rendering the external IP unreachable from other kind nodes. This demo runs Docker on Linux, which allows sending traffic directly to the load-balancer’s external IP if the IP space is within the docker IP space.

To use kind, you will also need to install docker.

First install kind on your machine following its installation guide.

We are going to use kind provider as an ephemeral Kubernetes cluster. With the following recipe we will end up with a nginx server running on a virtual machine, accessible outside the cluster using MetalLB load-balancer with Layer 2 mode. Demo: Virtual machine with external IP and MetalLB load-balancer

To read more on MetalLB concepts, implementation and limitations, please read its documentation. This mode provides real load-balancing behavior, by establishing BGP peering sessions with the network routers - which advertise the external IPs of the LoadBalancer service, distributing the load over the nodes. After traffic is routed to the node, the service proxy sends the traffic to the application pods. From a network perspective, the node owning the service appears to have multiple IP addresses assigned to a network interface. In this method, the MetalLB speaker pod announces the IPs in ARP (for IPv4) and NDP (for IPv6) protocols over the host network. This configuration mode makes the IPs reachable from the local network. This mode - which actually does not implement real load-balancing behavior - provides a failover mechanism where a single node owns the LoadBalancer service, until it fails, triggering another node to be chosen as the service owner. In order for the external IPs to be announced externally, MetalLB works in 2 modes, Layer 2 and BGP: MetalLB is responsible for assigning/unassigning an external IP Address to your service, using IPs from pre-configured pools. MetalLB allows you to create Kubernetes services of type LoadBalancer, and provides network load-balancer implementation in on-prem clusters that don’t run on a cloud provider. Over the last year, Kubevirt and MetalLB have shown to be powerful duo in order to support fault-tolerant access to an application on virtual machines through an external IP address.Īs a Cluster administrator using an on-prem cluster without a network load-balancer, now it’s possible to use MetalLB operator to provide load-balancer capabilities (with Services of type LoadBalancer) to virtual machines.

Universe sandbox 2 demo linux