306-300 Verified 2026 Edition

LPIC-3 High Availability and Storage Clusters (Exam 306)Practice Test

Master the LPIC-3 High Availability and Storage Clusters (Exam 306) with the official PlanetCert Practice Test. Access real exam questions, professional-grade detailed explanations, and our advanced adaptive simulator. Pass your certification exam on the first attempt.

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Exam Information

Official specifications published by LPI

Exam Format

90 min
60
Not publicly disclosed
Advanced Professional (LPIC-3)

Registration

$200 USD
Pearson VUE or online proctoring

Validity

5 years
Pass the current version of the LPIC-3 306 exam; Earn a higher-level LPI certification; Participate in LPI continuing education programs

306-300 Exam Topics and Domains

306-300 is organized into 4 weighted domains. Expect to work with mdadm, Ceph, Corosync, crm, and more.

1

High Availability Cluster Management

37%

High Availability Concepts and Theory

Cluster ArchitecturesRecovery Mechanisms and AvailabilityDisaster Recovery and State Management
  • Understand the properties and design approaches for high availability clusters
  • Apply Site Reliability Engineering principles to HA systems
  • Identify appropriate cluster architectures for specific use cases
  • Understand recovery mechanisms and availability metrics

Load Balanced Clusters

LVS and IPVS ConfigurationKeepalived Configurationldirectord ConfigurationHAProxy Configuration
  • Install, configure, maintain and troubleshoot LVS with keepalived
  • Configure and manage ldirectord for automatic failover
  • Deploy and configure HAProxy for load balancing
  • Understand backend server networking requirements

Failover Clusters

Pacemaker ArchitectureResource Classes and AgentsResource ManagementCluster Configuration and ManagementCorosync ConfigurationSTONITH Configuration
  • Install, configure, and maintain Pacemaker clusters
  • Understand Pacemaker architecture and components
  • Manage cluster resources with constraints and rules
  • Configure quorum and fencing mechanisms
  • Integrate Corosync with Pacemaker for cluster communication
  • Create and manage Pacemaker clusters
  • Configure resource agents and constraints
  • Set up STONITH devices
  • Troubleshoot cluster issues
  • Monitor cluster health
  • Misconfiguring quorum leading to split-brain
  • Improper STONITH configuration causing node fencing failures
  • Incorrect resource constraints causing unexpected migrations
  • Not testing fence devices before production deployment
2

High Availability Cluster Storage

22%

DRBD

DRBD Architecture and ConceptsDRBD ConfigurationDRBD Management and RecoveryDRBD Pacemaker IntegrationLINSTOR
  • Install, configure, and maintain DRBD devices
  • Understand DRBD replication protocols and states
  • Recover from split-brain and other failure scenarios
  • Integrate DRBD with Pacemaker clusters
  • Understand LINSTOR architecture and features

Cluster Storage Access

Storage Area NetworksiSCSI ConfigurationMultipathingClustered LVM
  • Connect Linux nodes to remote block storage
  • Configure iSCSI initiators and targets
  • Implement multipathing for redundant storage access
  • Manage clustered LVM with Distributed Lock Manager
  • Understand SAN technologies and topologies

Clustered File Systems

Filesystem ConceptsGFS2 ManagementOCFS2 ManagementAlternative Clustered Filesystems
  • Install, maintain, and troubleshoot GFS2 filesystems
  • Install, maintain, and troubleshoot OCFS2 filesystems
  • Understand Distributed Lock Manager functionality
  • Recognize alternative clustered filesystem options
3

High Availability Distributed Storage

22%

GlusterFS Storage Clusters

GlusterFS ArchitectureGlusterFS Cluster ManagementGlusterFS High AvailabilityGlusterFS Recovery and MaintenanceGNFS Awareness
  • Manage and maintain GlusterFS storage clusters
  • Configure HA features in GlusterFS
  • Scale GlusterFS clusters by adding/removing nodes
  • Replace failed bricks and recover from outages
  • Verify integrity after storage failures

Ceph Storage Clusters

Ceph ArchitectureCeph Storage BackendsCeph Block Storage (RBD)CephFSCeph Object Storage (RGW)Ceph Cluster ManagementCeph High Availability and ScalingCeph Recovery and Integrity
  • Manage Ceph clusters including OSD, MON, MGR, and MDS components
  • Create and manage RADOS Block Devices (RBD)
  • Deploy and manage CephFS volumes
  • Understand RADOS Gateway for object storage
  • Configure placement groups, pools, and CRUSH maps
  • Implement HA aspects and scale Ceph clusters
  • Perform cluster updates and manage tunables
  • Restore integrity after outages
4

Single Node High Availability

20%

Hardware and Resource High Availability

S.M.A.R.T MonitoringUPS ManagementResource Monitoring
  • Monitor local nodes for hardware failures
  • Configure S.M.A.R.T monitoring for disks
  • Set up UPS shutdown procedures
  • Detect and alert on resource exhaustion

Advanced RAID

Software RAID ManagementRAID Failure RecoveryRAID Metadata and Configuration
  • Manage software RAID with advanced features
  • Create and maintain RAID arrays with hot spares
  • Recover from disk failures in RAID
  • Understand RAID metadata formats and geometries
  • Monitor and report on RAID status

Advanced LVM

LVM Volume ManagementLVM SnapshotsThin ProvisioningLVM RAIDLVM Configuration
  • Configure LVM volumes including linear and striped
  • Extend, reduce, and move logical volumes
  • Create and manage LVM snapshots
  • Configure thin provisioning with thin pools and volumes
  • Set up LVM RAID functionality
  • Manage LVM configuration and metadata backups

Network High Availability

Network BondingNetwork Configuration FilesVLAN ConfigurationSwitch Configuration for HABGP and External RedundancyTraffic Control Awareness
  • Configure redundant network connections using bonding
  • Understand and implement various bonding modes
  • Configure switch settings for HA including RSTP
  • Set up VLANs on regular and bonded interfaces
  • Understand BGP principles for external redundancy
  • Recognize traffic shaping and control concepts

How do I earn this certification?

Passing 306-300 earns the LPIC-3 High Availability and Storage Clusters certification. It sits in the Linux Professional Certification track.

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How to study for this exam?

The most effective way to prepare for 306-300 is by using the PlanetCert Simulator to practice questions and review detailed explanations.

What's changed on this exam?

Current Status
  • ACTIVE
  • Last content update: 2021-06-01
Updates
  • Pacemaker 2.1.8 New resource agent features and improved STONITH handling relevant to exam objectives • Release date: 2025-11-15
  • Ceph 19 (Squid) BlueStore improvements and CephFS enhancements align with exam topic 363.2 • Release date: 2025-10-20
  • DRBD 9.2 Enhanced multi-primary support and LINSTOR integration relevant to exam topic 362.1 • Release date: 2025-09-12
  • Corosync 3.1.8 Improved quorum handling and network transport options for exam topic 361.3 • Release date: 2025-07-30
  • GlusterFS 11 Performance improvements and management enhancements for exam topic 363.1 • Release date: 2025-04-22
  • HAProxy 3.0 New load balancing algorithms and ACL features relevant to exam topic 361.2 • Release date: 2025-03-15

Who should take this exam?

This exam is typically taken by Senior Linux System Administrators and Enterprise Linux Engineers.

Active LPIC-2 certification
  • 3-5 years of enterprise Linux administration experience
  • Experience with high availability systems
  • Familiarity with clustering concepts
  • Knowledge of storage technologies (SAN, iSCSI, RAID)
  • Understanding of networking fundamentals

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