Course Overview
This course is for system administrators responsible for deploying and managing Longhorn across various Kubernetes cluster distributions with Rancher Manager for Rancher Prime. The course kicks off with an introduction to Longhorn and its architecture, followed by practical lessons on accessing Longhorn through a simple web browser. Students will gain hands-on experience in deploying, managing, and upgrading Longhorn on their Kubernetes clusters. The course delves into volume management, creating volume replicas from persistent volumes using storage classes. It emphasizes the establishment of data replication for enhanced fault tolerance and data redundancy within the existing Kubernetes cluster. Additionally, students will learn the ins and outs of conducting scheduled snapshots, backups, and setting up a Disaster Recovery Volume.
This course prepares students for the SCA in Longhorn Deployment and Operations exam once released.
Who should attend
This course is designed for system administrators and other persons responsible for provisioning and administering Kubernetes clusters with Rancher Manager for Rancher Prime.
Prerequisites
An understanding of Kubernetes objects and resources is needed for this course. This knowledge can be gained through the ! course. Linux command line experience is helpful.
Course Objectives
Attendees will be taught the following concepts and skills:
- An Introduction to Longhorn
- Installation of Longhorn via Helm and as a Rancher Application
- Management of Nodes
- Management of Disks and Volume Replicas
- Logging and Monitoring of Clusters
- Backing up and Restoring of Volumes
- Disaster Recovery Volumes
- Upgrading Longhorn Manager and Engine
Course Content
Section 1: Course Introduction
Section 2: Introduction to Longhorn
- Introduction to Longhorn
- High-level Overview of Longhorn Features
- Overview of the Longhorn Architecture
Section 3: Install Longhorn
- Installation Requirements
- Installation with Helm
- Installation as a Rancher Application
- Longhorn Web UI Features
Section 4: Node Management
- Enable or Disable Nodes
- Add a new Node in Cluster
- Node Maintenance
- Remove a Node from Cluster
Section 5: Disk and Volumes Management
- Add Individual Disk Partition
- Remove Disk Storage
- Add LVM Storage
- Create a Volume
- Use Trim to Reclaim Storage Space
- Resize Volume
- Tune Storage Performance by Data Locality
Section 6: High Availability in Longhorn
- Define Replica Counts and Location
- Replica Balancing for even Distribution of Resources
Section 7: Monitor and Troubleshoot Longhorn
- Install Prometheus and Grafana for Monitoring Longhorn’s Vital Metrics
- Integrate Longhorn Metrics with the Rancher Monitoring System
- Configure Longhorn Alert Rules
- Recover from Failures
Section 8: Longhorn Backup and Restore
- Manually Create a Snapshot of a Volume
- Restore a Volume from a Snapshot Manually
- Delete a Volume Snapshot
- Work with Recurring Volume Snapshot
- Manually Create a Backup of a Volume
- Restore a Volume from a Backup
- Work with Recurring Volume Backups
- Work with Disaster Recovery Volumes
Section 9: Upgrade Longhorn
- Upgrade Longhorn Manager
- Upgrade Longhorn Engine