Use KubeKey to Create a Kubernetes Cluster Inet6 fe80::f67c:bd4f:d6d5:1d9b/64 scope link noprefixrouteĪs you can see above, high availability is successfully configured. Inet 172.16.0.10/24 scope global secondary eth0 # The VIP address Valid_lft 72690sec preferred_lft 72690sec Run the following command to install Keepalived and HAproxy first.ġ: lo: mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000 If you want, you can add more nodes all with Keepalived and HAproxy installed for that purpose. the floating IP address) will be automatically associated with another node so that the cluster is still functioning well, thus achieving high availability.

HAProxy, providing reliable, high performance load balancing, works perfectly with Keepalived.Īs Keepalived and HAproxy are installed on lb1 and lb2, if either one goes down, the virtual IP address (i.e. Keepalived provides a VRPP implementation and allows you to configure Linux machines for load balancing, preventing single points of failure. Prepare Hosts IP Addressįor more information about requirements for nodes, network, and dependencies, see Multi-node Installation. Only Keepalived and HAproxy will be installed on these two nodes, avoiding any potential conflicts with any Kubernetes components and services.

That said, configuring two specific nodes for load balancing (You can add more nodes of this kind as needed) is more secure. Admittedly, you can do that and high availability can also be achieved. Notice that in this example, Keepalived and HAproxy are not installed on any of the master nodes.

That means in the event of node failures, the IP address can be passed between nodes allowing for failover, thus achieving high availability. The virtual IP address in this example may also be called 'a floating IP address'. The example cluster has three master nodes, three worker nodes, two nodes for load balancing and one virtual IP address.

Use KubeKey to set up a Kubernetes cluster and install KubeSphere.

This tutorial demonstrates how to configure Keepalived and HAproxy for load balancing and achieve high availability. In this connection, there are plenty of ways for you to choose from to achieve high availability. Set up an HA Kubernetes Cluster Using Keepalived and HAproxyĪ highly available Kubernetes cluster ensures your applications run without outages which is required for production.

Install haproxy on redhat 6