Advanced

Distributed File System - User Guide | Advanced Section

What Is The Advanced Section?

The Advanced section contains cluster-level configuration, storage topology management, and manager module control. These pages are intended for administrators who need to tune cluster behavior, manage data placement rules, and control which Ceph features are active.

The Three Advanced Pages:

Page	What It Does
Configuration	Exposes the full Ceph configuration database and lets you view/edit tunable parameters.
Storage Topology	Visualizes the CRUSH tree, manages CRUSH rules, and manages Erasure Code profiles.
Extensions	Lists Ceph Manager (MGR) modules and allows enable/disable/configure actions.

Warning

Advanced settings can destabilize the cluster if changed incorrectly. Modify Configuration and Storage Topology only when you understand the impact or have administrator guidance. Disabling critical Extensions can make parts of the Karios DFS interface unavailable.

Advanced Pages

• Configuration
• Storage Topology
• Extensions

Quick Reference - Advanced Section

Task	Where To Go	How	What To Expect
Find a configuration parameter	Advanced > Configuration	Use Search or All Filters	Parameter row appears; expand for full details
Edit a configuration value	Advanced > Configuration	Expand row > Edit Value > set value	Current Value updates; startup-flagged keys can require restart
Reset configuration to default	Advanced > Configuration	Expand row > Edit Value > clear value	Override removed and compiled default is used
View physical topology	Advanced > Storage Topology	Expand CRUSH tree nodes	You see root, datacenter, rack, host, and OSD hierarchy
Create CRUSH rule	Advanced > Storage Topology > CRUSH Rules	Click + Create and set name/root/failure-domain/device-class	New rule is available for pool assignment
Delete unused CRUSH rule	Advanced > Storage Topology > CRUSH Rules	Click trash icon only when Used By is empty	Rule is removed safely
Create EC profile	Advanced > Storage Topology > Erasure Code Profiles	Click + Create and set plugin, k, m	Profile appears for erasure-coded pool creation
Check enabled modules	Advanced > Extensions	Review Enabled column and enabled/total counter	You know active vs inactive MGR modules
Enable module	Advanced > Extensions	Click Enable on module row	Module becomes active
Disable module	Advanced > Extensions	Click Disable (if Always-On = No)	Module functionality stops immediately
Configure module	Advanced > Extensions	Click gear icon or expand row > Configuration > Edit Config	Module settings are updated