Red Hat High Availability Clustering
Deploy reliable, available critical production services in a high availability cluster
Want to keep your critical services running no matter what? The RH436 course shows you how to build and manage rock-solid network services that just won’t quit. You’ll spend 4 days getting your hands dirty with Red Hat Enterprise Linux, setting up Pacemaker clusters, shared storage, and the essential services that keep businesses running think web servers and databases. Plus, you’ll master LVM shared volumes, GFS2, and multipathing to create storage that can take a beating and keep on ticking.
Here’s what you’ll learn:
- Get Pacemaker clusters up and running smoothly.
- Build services that stay online when others fail.
- Fix cluster problems like a pro.
- Set up iSCSI shared storage and multipathing that actually works.
- Make LVM play nice in cluster environments.
- Configure GFS2 file systems that span multiple nodes.
Who’s this for?
Senior Linux admins who need their production services to stay up 24/7. If you’re responsible for keeping mission-critical systems running and can’t afford downtime, this one’s for you.
- Creating high availability clusters
- Create a basic high availability cluster.
- Managing cluster nodes and quorum
- Manage node membership in the cluster and describe how it impacts cluster operation.
- Isolating malfunctioning cluster nodes
- Isolate unresponsive cluster nodes to protect data and recover services and resources after a failure.
- Creating and configuring resources
- Create basic resources and resource groups to provide highly available services.
- Troubleshooting high availability clusters
- Identify, diagnose, and fix cluster issues.
- Automating cluster and resource deployment
- Deploy a new high availability cluster and cluster resources using Ansible automation.
- Managing two-node clusters
- Operate two-node clusters while identifying and avoiding issues specific to a two-node cluster configuration.
- Accessing iSCSI storage
- Configure iSCSI initiators on your servers to access block-based storage devices provided by network storage arrays or Ceph storage clusters.
- Accessing storage devices resiliently
- Configure resilient access to storage devices that have multiple access paths.
- Configuring LVM in clusters
- Select, configure, and manage the correct LVM configuration for use in your cluster.
- Providing storage with the GFS2 cluster file system
- Use the GFS2 cluster file system to simultaneously pProvide tightly coupled shared storage that can be accessed by multiple nodes.
- Eliminating single points of failure
- Identify and eliminate single points of failure in your cluster to decrease risk and increase average service availability.
Impact on the organization
High availability clustering can improve reliability, availability, and resiliency of your mission-critical services, resulting in reduced downtime and easier hardware maintenance.
Red Hat has created this course in a way intended to benefit our customers, but each company and infrastructure is unique, and actual results or benefits may vary.
Impact on the individual
As a result of attending this course, you will be able to create, manage, and troubleshoot highly available network services and tightly-coupled cluster storage for business-critical applications.
Students should be able to demonstrate the following skills:
- Improve application uptime by using high availability clustering.
- Manage storage in an high availability environment using iSCSI initiators, HA-LVM or LVM Shared Volume Groups as appropriate, and GFS2 cluster file systems.
- Implement strategies to identify and eliminate single points of failure in high availability clusters.
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