Install and Configure a Multi-Master HA Kubernetes Cluster with kubeadm, HAProxy and Keepalived on CentOS 7

Posted on 16/01/2021 by Lisenet

We are going to build a highly available Kubernetes homelab cluster with three control plane nodes and three worker nodes. Continue reading →

High Availability Pacemaker Cluster Monitoring

Posted on 26/01/2019 by Lisenet

We’re going to configure cluster email notifications on RHEL 7. Continue reading →

High Availability Pacemaker Cluster Logging

Posted on 22/01/2019 by Lisenet

We’re going to configure cluster logging on RHEL 7. Continue reading →

Libvirt Fencing on a Physical KVM Host

Posted on 24/12/2018 by Lisenet

The Red Hat High Availability Add-On ships with a number of different fencing agents for different hypervisors. Continue reading →

Configure HAProxy and Keepalived with Puppet

Posted on 03/05/2018 by Lisenet

We’re going to use Puppet to install and configure HAProxy to load balance Apache web services. We’ll also configure Keepalived to provide failover capabilities. Continue reading →

Configure Active/Passive NFS Server on a Pacemaker Cluster with Puppet

Posted on 29/04/2018 by Lisenet

We’re going to use Puppet to install Pacemaker/Corosync and configure an NFS cluster. Continue reading →

Configure MySQL Replication with Puppet

Posted on 27/04/2018 by Lisenet

We’re going to use Puppet to install MySQL and configure Master/Master replication. Continue reading →

Configure OpenLDAP Master/Slave Replication with Puppet

Posted on 24/04/2018 by Lisenet

We’re going to use Puppet to configure a pair of OpenLDAP servers with a master-slave replication. Continue reading →

Configure Peered NTP Servers on CentOS 7

Posted on 08/04/2018 by Lisenet

Configure NTP peering on CentOS 7. Continue reading →

Configure DHCP Failover with Dynamic DNS on CentOS 7

Posted on 07/04/2018 by Lisenet

We are going to set up a DHCP failover with dynamic DNS. Continue reading →