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Tag Archives: CentOS

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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 →

Posted in High Availability, Kubernetes | Tagged CentOS, HAProxy, Keepalived, kubeadm, Kubernetes | 4 Comments

Install and Configure a PXE Boot Server for Kickstart Installation on CentOS 7

Posted on 09/01/2021 by Lisenet

I am moving away from Foreman managed PXE functionality to a standalone PXE boot server. Continue reading →

Posted in Linux | Tagged CentOS, homelab, Kickstart, PXE boot, syslinux, TFTP | 15 Comments

Disable Suspend Mode on Laptop Lid Close with Ansible and Systemd

Posted on 12/12/2020 by Lisenet

I have a CentOS 7 laptop where every time I close the lid, the system suspends. Continue reading →

Posted in Linux | Tagged Ansible, CentOS | Leave a comment

Deploy Keycloak Using Docker Swarm

Posted on 24/08/2020 by Lisenet

We are going to deploy Keycloak using Docker Swarm. Continue reading →

Posted in Linux | Tagged CentOS, Docker, Docker Swarm, Keycloak | Leave a comment

Change the Default Docker Subnet with SystemD

Posted on 07/07/2020 by Lisenet

Docker uses the default 172.17.0.0/16 subnet for container networking. Continue reading →

Posted in Linux | Tagged CentOS, Docker, systemd | 2 Comments

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 →

Posted in High Availability, Linux | Tagged CentOS, Corosync, EX436, Pacemaker, RHCA, RHEL | 4 Comments

High Availability Pacemaker Cluster Logging

Posted on 22/01/2019 by Lisenet

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

Posted in High Availability, Linux | Tagged CentOS, Corosync, EX436, Pacemaker, RHCA, RHEL | Leave a comment

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 →

Posted in High Availability | Tagged CentOS, EX436, fence_xvm, KVM, Pacemaker, RHCA, RHEL | 7 Comments

Katello: Security Compliance Management with OpenSCAP

Posted on 28/07/2018 by Lisenet

Working with Katello – part 6. We will configure OpenSCAP plugin to receive automated vulnerability assessment and security compliance audits from Foreman hosts. Continue reading →

Posted in Linux | Tagged CentOS, Foreman, homelab, Katello, OpenSCAP, Red Hat Satellite 6 | Leave a comment

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 →

Posted in High Availability, Linux | Tagged CentOS, HAProxy, homelab, Keepalived, Puppet | 4 Comments

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