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Ceph
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Ceph
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Ceph is a distributed scale-out storage.
Ceph Cluster Installation
Host Setup
Container Setup
Bootstrap Ceph cluster
Ceph Cluster Configuration
Enable mgr dashboard
Add System Administration User
Enable multiple CephFS filesystems
Ceph Pool Namingscheme
Create CephFS
Enable CephFS Snapshots
Enable multi-MDS
Enable dirfrag
Setting Replica defaults
Setting Minimum Number of Standby MDS’s
Ceph Cluster Usage
Check cluster health
Print list of users
CephX User
Setting Quotas
Mounting a CephFS
Runtime OSD Configuration
Rebooting a node
Ceph Cluster Troubleshooting
PG States
Check cluster health
Fix inconsistent PGs
Powering on a (failed) Cluster node
Stop OSD Rebalance
Stop Scrubbing
MDS Fails
Replace a disk
Resetting a SATA device
Moving to SSD journal
Remove mds damage (DANGEROUS, DON’T DO THAT)
Reformat a cephfs
Ceph Cluster Upgrade
0. Terminology
1. Prerequisites
2. Host System Updates
3. Container System Updates
Ceph Random Stuff
Setting Number of Placement Groups
Setting Number of Placement Groups for Placement
Increase Ceph MDS Cache
Increase CephFS Max Files per Directory
Adjust recovery settings
Create Ceph Pool
Assign application to Pool