Infrastructure

Distributed File System - User Guide | Infrastructure Section

1. What Is Infrastructure?

The Infrastructure section is where you manage the physical and daemon-level foundation of your Karios DFS cluster. Everything in Storage, Block Storage, and Object Storage depends on what is configured here first.

The five Infrastructure pages and what they do:

Page	What It Manages
Hosts	Physical nodes registered in the cluster - hardware profiles, labels, daemons, and devices per host
Monitors	Ceph Monitor daemons - the quorum system that maintains cluster state
OSDs	Object Storage Daemons - one per disk, responsible for storing all data
Services	All Ceph daemon types managed by the orchestrator - deploy, monitor, and manage services
Physical Disks	Every block device visible across all hosts - availability status and disk health

Why Infrastructure must be healthy before anything else:

All storage features (Pools, File Systems, NFS, Block Images, Object Storage) depend on healthy Infrastructure. A new user should always verify Infrastructure before creating any storage resources.

Correct check order for a new user:

1. Hosts - Confirm all cluster nodes show Status = Online.

2. Monitors - Confirm all monitors are In Quorum.

3. OSDs - Confirm all OSDs show status up/in.

4. Services - Confirm all services show Running.

5. Physical Disks - Verify available disks for future OSD deployment.

2. Quick Reference - Infrastructure Health Check Sequence

Use this as your complete checklist for verifying Infrastructure health before creating storage resources.

#	What To Do	Where To Go	What To Check	Healthy Result
1	Verify all hosts are online	Infrastructure > Hosts	Status column for every host row	All hosts show Online
2	Verify no host is in maintenance	Infrastructure > Hosts	Status column	No host shows Maintenance unless intentionally set
3	Check all monitors in quorum	Infrastructure > Monitors	In Quorum panel and Not In Quorum panel	All monitors appear in In Quorum, and Not In Quorum shows the healthy empty-state message
4	Verify monitor quorum count	Infrastructure > Monitors	quorum field in Status panel	Count matches expected (for example 3/3)
5	Check all OSDs are up/in	Infrastructure > OSDs	Status column for every OSD row	All OSDs show up/in
6	Check OSD usage levels	Infrastructure > OSDs	Usage column progress bars	No OSD above 80% usage
7	Check no unexpected cluster flags set	Infrastructure > OSDs	FLAGS row at top of page	Flags are default (unset) unless intentionally set
8	Verify all services running	Infrastructure > Services	Running and Status columns	All services show matching counts (for example 4/4) and Status = Running
9	Check available disks	Infrastructure > Physical Disks	Available count in page header	Available count matches expected free disks for future OSD deployment
10	Verify disk health	Infrastructure > Hosts > Device Health tab	SMART health for each disk	All disks show Health = PASSED

Note

If any issue persists, raise a support ticket via Monitoring > Alerts or Karios Support.

Infrastructure Sections

• Hosts
• Monitors
• OSDs
• Services
• Physical Disks