LPIC-306 Objectives V3.0

Introduction

The description of the entire LPIC-3 programme is listed here.

Version Information

These objectives are A DRAFT FOR version 3.0.

There is also a summary and detailed information on the changes from version 2.0 to 3.0 of the objectives.

The version 2.x objectives can be found here.

Translations of Objectives

The following translations of the objectives are available on this wiki:

Objectives

Topic 351: High Availability Cluster Management

351.1 High Availability Concepts and Theory (weight: 5)

Weight	5
Description	Candidates should understand the properties and design approaches of high availability clusters.

Key Knowledge Areas:

Understand the most important cluster architectures.
Understand recovery and cluster reorganization mechanisms.
Design an appropriate cluster architecture for a given purpose.
Application aspects of high availability.
Operational considerations of high availability.

The following is a partial list of the used files, terms and utilities:

Active/Passive Cluster, Active/Active Cluster
Failover Cluster, Load Balanced Cluster
Shared-Nothing Cluster, Shared-Disk Cluster
Cluster resources
Cluster services
Quorum
Fencing
Split brain
Redundancy
Mean Time Before Failure (MTBF)
Mean Time To Repair (MTTR)
Service Level Agreement (SLA)
Desaster Recovery
Replication
Session handling

351.2 Load Balanced Clusters (weight: 8)

Weight	8
Description	Candidates should know how to install, configure, maintain and troubleshoot LVS. This includes the configuration and use of keepalived and ldirectord. Candidates should further be able to install, configure, maintain and troubleshoot HAProxy.

Key Knowledge Areas:

Understanding of LVS / IPVS.
Basic knowledge of VRRP.
Configuration of keepalived.
Configuration of ldirectord.
Backend server network configuration.
Understanding of HAProxy.
Configuration of HAProxy.

The following is a partial list of the used files, terms and utilities:

ipvsadm
syncd
LVS Forwarding (NAT, Direct Routing, Tunneling, Local Node)
connection scheduling algorithms
keepalived configuration file
ldirectord configuration file
genhash
HAProxy configuration file
load balancing algorithms
ACLs

351.3 Failover Clusters (weight: 8)

Weight	8
Description	Candidates should have experience in the installation, configuration, maintenance and troubleshooting of a Pacemaker cluster. This includes the use of Corosync. The focus is on Pacemaker 1.1 for Corosync 2.x.

Key Knowledge Areas:

Pacemaker architecture and components (CIB, CRMd, PEngine, LRMd, DC, STONITHd).
Pacemaker cluster configuration.
Resource classes (OCF, LSB, Systemd, Upstart, Service, STONITH, Nagios).
Resource rules and constraints (location, order, colocation).
Advanced resource features (templates, groups, clone resources, multi-state resources).
Pacemaker management using pcs.
Pacemaker management using crmsh.
Configuration and Management of corosync in conjunction with Pacemaker.
Awareness of other cluster engines (OpenAIS, Heartbeat, CMAN).

The following is a partial list of the used files, terms and utilities:

pcs
crm
crm_mon
crm_verify
crm_simulate
crm_shadow
crm_resource
crm_attribute
crm_node
crm_standby
cibadmin
corosync.conf
authkey
corosync-cfgtool
corosync-cmapctl
corosync-quorumtool
stonith_admin

Topic 352: High Availability Cluster Storage

352.1 DRBD / cLVM (weight: 6)

Weight	6
Description	Candidates are expected to have the experience and knowledge to install, configure, maintain and troubleshoot DRBD devices. This includes integration with Pacemaker. DRBD configuration of version 8.4.x is covered. Candidates are further expected to be able to manage LVM configuration within a shared storage cluster.

Key Knowledge Areas:

Understanding of DRBD resources, states and replication modes.
Configuration of DRBD resources, networking, disks and devices.
Configuration of DRBD automatic recovery and error handling.
Management of DRBD using drbdadm.
Basic knowledge of drbdsetup and drbdmeta.
Integration of DRBD with Pacemaker.
cLVM
Integration of cLVM with Pacemaker.

The following is a partial list of the used files, terms and utilities:

Protocol A, B and C
Primary, Secondary
Three-way replication
drbd kernel module
drbdadm
drbdsetup
drbdmeta
/etc/drbd.conf
/proc/drbd
LVM2
clvmd
vgchange, vgs

352.2 Clustered File Systems (weight: 4)

Weight	4
Description	Candidates should know how to install, maintain and troubleshoot installations using GFS2 and OCFS2. This includes integration with Pacemaker as well as awareness of other clustered filesystems available in a Linux environment.

Key Knowledge Areas:

Understand the principles of cluster file systems.
Create, maintain and troubleshoot GFS2 file systems in a cluster.
Create, maintain and troubleshoot OCFS2 file systems in a cluster.
Integration of GFS2 and OCFS2 with Pacemaker.
Awareness of the O2CB cluster stack.
Awareness of other commonly used clustered file systems.

The following is a partial list of the used files, terms and utilities:

Distributed Lock Manager (DLM)
mkfs.gfs2
mount.gfs2
fsck.gfs2
gfs2_grow
gfs2_edit
gfs2_jadd
mkfs.ocfs2
mount.ocfs2
fsck.ocfs2
tunefs.ocfs2
mounted.ocfs2
o2info
o2image
CephFS
GlusterFS
AFS

Topic 353: Distributed Storage

353.1 GlusterFS Storage Clusters (weight: 4)

Weight	4
Description	Candidates should be able to manage and maintain a GlusterFS storage cluster.

Key Knowledge Areas:

Understand the architecture and components of GlusterFS
Manage GlusterFS peers, trusted storge pools, bricks and volumes
Mount and use an existing GlusterFS
Configure high availability aspects of GlusterFS
Scale up a GlusterFS cluster
Restore and verify the integrity of a GlusterFS cluster after an outage
Integrate GlusterFS into Pacemaker
Awareness of GNFS

Partial list of the used files, terms and utilities:

gluster (including relevant subcommands)

353.2 Ceph Storage Clusters (weight: 8)

Weight	8
Description	Candidates should be able to manage and maintain a Ceph Cluster. This includes the configuration of RGW, RDB devices and CephFS.

Key Knowledge Areas:

Understand the architecture and components of Ceph
Manage OSD, MON and MDS
Understand and manage placement groups and pools
Create and manage Rados Block Devices
Create and manage CephFS volumes, including snapshots
Mount and use an existing CephFS
Understand and adjust CRUSH maps
Configure high availability aspects of Ceph
Scale up a Ceph cluster
Integrate Ceph into Pacemaker
Restore and verify the integrity of a Ceph cluster after an outage

Partial list of the used files, terms and utilities:

ceph-deploy (including relevant subcommands)
ceph.conf
ceph (including relevant subcommands)
rados (including relevant subcommands)
rdb (including relevant subcommands)
cephfs (including relevant subcommands)
ceph-authtool
ceph-crushtool