Ceph In-Depth Training, Remote/Online

Introduction

• Trainer and croit introduction, training process

• Setting up access to the test environment

General Ceph basics

• History of Ceph, horizontal vs. vertical scalability, Ceph vs. X

• Typical Ceph use cases, overview of Ceph management systems

• Introduction: RADOS (low-level object store), RBD, CephFS, S3/Swift (high-level object store)

Components of a Ceph cluster

• MONs, MGRs, OSDs, MDSs, RGWs

• CRUSH map

• Replication and erasure code (EC), with example

Initial Ceph cluster setup

• Obtaining Ceph, deployment automation

• Setting up the first MON, adding further MONs, MGR services

• Summary

Deploying OSDs

• BlueStore device setup variants

• ceph-deploy and ceph-volume

• Summary

Distributing data into pools with CRUSH

• Ceph pools and placement groups

• CRUSH rules and adding them

• Erasure coded pools

• Summary

RBD details

• Mounting and using RBD devices

• Details of erasure coded pools

• Best practices

CephFS details

• Creating and mounting CephFS, CephFS attributes

Other connectors

• Setting up and using Samba (SMB/CIFS) and NFS

RadosGW details

• Deploying RadosGW, access via S3 API

Cluster planning

• Clarifying requirements, planning for 1y/3y/5y

• Performance expectations from hard drives, hardware sizing, failure domains

• Exercise

Network planning

• Simple and complex network design, example setups

• Typical network related problems, dos and don'ts of cluster networks

Authorization management

• Ceph keys, permissions for RBD and CephFS

• Firewall configuration

Operations: error handling, upgrades and all that

• Scenario: a disk died, what now? PG states

• Debugging crashes with log files, using the objectstore tool

• Cluster is running full, controlling recovery speed

• Upgrading Ceph

Managing a cluster with cephadm

• Convert an existing cluster to cephadm

• Configure Ceph through cephadm & dashboard, custom service configuration

• Deploy, troubleshoot and update Ceph services

Managing a cluster with croit (optional)

• Import existing cluster, configure Ceph with croit

• Setting up NFS & SMB, running an RGW HA group

• Update croit (cluster & container)

Case studies

• RGW for big data and video streaming

• RBD for virtualization

• CephFS with NFS and SMB for backups, CephFS for a large number of small files

Monitoring and performance

• Alerting when something goes wrong

• Tuning and monitoring performance