Linux High Availability Clustering on RHEL 8 (2022)
Design & deploy HA cluster active/passive or active/active services using Pacemaker on Esxi and KVM lab environment.
What you will learn
High availability cluster installation, configuration, managing and troubleshooting in RHEL8/CentOS8 on VMware Vspare .
Students should understand HA cluster concepts and how to manage different nodes, start/stop services
Managing Cluster Nodes and Quorum
Creating and Configuring Resources
install configure and mange Fencing service on vmware and KVM
About Order, Location & Colocation Constraints
iscsi target and initiator configuration
multi-pathing on iscsi server
Students will be able to build a high available and load balanced services
High availability cluster GUI interface
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 Esxi Server.
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 ?
1)Storage (ISCSI network to storage).
2)High Availability (Explain Cluster software components and how they are communicating to each other).
for more details please check course content .
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Basic HA cluster installation and configuration
Constraints group and property set
iSCSI target and initiator
Active Passive environment or ext3, ext4, xfs filesystem environment
Active Active environment or GFS2 filesystem environment
HA Proxy Loadbalancing
Bonus Lectures: High availability clustering in CentOS 7 on KVM
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