
Set a static IP on an ESXi host, configure subnet mask and gateways, and ensure DNS settings while connecting virtual machines to the network for reliable infrastructure.
Create a new virtual machine and install Red Hat Enterprise Linux 8, configuring language, time, hostname, memory, CPU, storage, network, and license during setup.
Learn how to download high availability repository packages in one go, configure the repository, and install pacemaker cluster components across all machines using repo sync.
Demonstrate managing a Red Hat cluster by inspecting current status, enforcing quorum, and stopping nodes to see how the last man standing keeps the cluster operational.
Learn to stop and start cluster services, check status, and apply quorum and tiebreaker concepts to maintain a healthy Red Hat cluster.
Examine issues in a two-node Red Hat cluster, including quorum loss with 50 plus one, split brain from connectivity failures, and the need to manage wait-for-all properties.
Configure cluster properties, stop cluster services, modify the cluster configuration file, start services, and verify quorum and operational status in a two-node Red Hat cluster.
Configure location, order, and colocation constraints to control resource behavior in a Red Hat cluster, and learn how groups and properties enable or disable resources in practice.
Practice session on constrained groups and property sets in Red Hat clustering, teaching resource creation, virtual IP setup, and configuring location, order, and colocation constants.
Explore fencing theory in Red Hat clustering, including quorum calculations and mechanisms to isolate failed nodes by powering them off, ensuring resource accessibility and cluster integrity.
Install and configure iSCSI target and initiator on Red Hat cluster nodes, enable the services, set up block storage on the shared network, and perform target discovery.
Explore practical multipath configurations in Red Hat clustering, linking two networks—the cluster and storage networks—to ensure resilience, manage initiator and node setups, and monitor multipath status for high availability.
Discover how to set up an NFS-backed cluster in Red Hat, linking multiple nodes, installing required packages, configuring services to start on boot, and mounting shared storage across clients.
Learn how to install and configure nfs in a Red Hat cluster, enable and start services across nodes, set up shared storage, create partitions, mount points, and verify cluster resources.
What is Linux Cluster ?
High availability clusters provide highly available services by eliminating single points of failure and by failing over services from one cluster node to another in case a node becomes inoperative. Typically, services in a high availability cluster read and write data (by means of read-write mounted file systems). Therefore, a high availability cluster must maintain data integrity as one cluster node takes over control of a service from another cluster node. Node failures in a high availability cluster are not visible from clients outside the cluster. (High availability clusters are sometimes referred to as failover clusters.) high availability service management component, Pacemaker.
I am covering below all points in this course .
Build And Configure our Lab:
Using VMware Workstation.
Nested VMware Vspare .
Build Virtual Machines Considered as our cluster nodes.
required networking for high available cluster .
Repository server configuration on RHEL 8 for high availability cluster
What is cluster ?
Cluster types:
1)Storage (ISCSI network to storage).
2)High Availability (Explain Cluster software components and how they are communicating to each other).
3)Load Balancing.
4)High performance
for more details please check course content .
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