Stack Overflow
Stack Overflow

Questions tagged [ceph]

Ceph is a distributed object store and file system designed to provide excellent performance, reliability and scalability.

Ceph is a distributed object store and file system designed to provide excellent performance, reliability and scalability. Ceph is an project primarily developed by Inktank (a spin-off of , now acquired by .

External Links:

605 questions
1
vote
1 answer

Ceph Octopus zabbix config-show fails with python error

Hi I have managed to install Ceph Octopus 15.2.4 and python Python 3.6.8 on CentOS Linux release 8.2.2004. Cluster health is Good. However, when I try configure the zabbix module using steps in this https://docs.ceph.com/en/latest/mgr/zabbix/ I…
jnan
  • 23
  • 4
1
vote
1 answer

Recover Rook cluster from Disk

Is there any way to recover data when all /var/lib/rook/ directories are deleted from all nodes? I have recovered my cluster but rook isn't picking up my original Ceph drive partitions.
Bots Fab
  • 139
  • 1
  • 9
1
vote
1 answer

Doing minor version update of Ceph cluster with ceph-ansible and rolling-update playbook

I want to upgrade my ceph cluster to the latest minor version of the current installed major version (mimic). I have a ceph-ansible setup for deployment which is used to deploy new nodes with the site.yml playbook. I learned from the documentation…
itsafire
  • 5,607
  • 3
  • 37
  • 48
1
vote
1 answer

Ceph octopus, setting autoscale mode from ceph.conf file

Since octopus, ceph clusters have the osd_pool_default_pg_autoscale_mode flag set to on as default. So far I was able to turn it off from the cli using ceph config set global osd_pool_default_pg_autoscale_mode off as described here. I would like to…
aiqency
  • 1,015
  • 1
  • 8
  • 22
1
vote
2 answers

How to run Rook-Ceph on one node?

I have a single node development Kubernetes cluster running on bare metal (ubuntu 18.04) and I need to test my application with rook-ceph. I followed the rook-ceph instructions (https://rook.io/docs/rook/v1.3/ceph-quickstart.html) for installing it…
AVarf
  • 4,481
  • 9
  • 47
  • 74
1
vote
1 answer

Single-node ceph cluster unresponsive from client

I have attempted to set up a small one-node ceph cluster for some proof-of-concept work with ceph fs. The cluster is running centos 7 OS with : # ceph --version ceph version 13.2.10 (564bdc4ae87418a232fc901524470e1a0f76d641) mimic (stable) The…
GSP
  • 93
  • 2
  • 7
1
vote
3 answers

What's the best practice of improving IOPS of a CEPH cluster?

I am currently building a CEPH cluster for a KVM platform, which got catastrophic performance outcome right now. The figure is dreadful. I am not really familiar with physically distributed systems, is there any general advice of improving the…
Frank_HCY
  • 11
  • 1
  • 2
1
vote
2 answers

Adding OSDs to Ceph with WAL+DB

I'm new to Ceph and am setting up a small cluster. I've set up five nodes and can see the available drives but I'm unsure on exactly how I can add an OSD and specify the locations for WAL+DB. Maybe my Google-fu is weak but the only guides I can…
Gaspode
  • 149
  • 1
  • 10
1
vote
0 answers

"Read-only file system" error on cephfs, how to handle this?

After full recovery as described here https://docs.ceph.com/docs/master/cephfs/disaster-recovery-experts/#disaster-recovery-experts there are still problems in filesystem. "loaded dup inode" error log messages lead me to /lost+found folder loaded…
jkrzyz
  • 11
  • 1
1
vote
1 answer

How to CreateTopic in Ceph as a user

I'm trying to create a topic in Ceph so that I can receive notifications when an object is uploaded to a bucket. When I call the CreateTopic endpoint without any AWS credentials (as an anonymous user), the call succeeds. However, in order to receive…
Alexis Anand
  • 13
  • 1
  • 4
1
vote
0 answers

CEPH's OSD_OBJECTSTORE which output is correct

Regarding the following output, I'm confused as to what exactly the current OSD_objectstore type is? [root@ceph1 ~]# ceph osd metadata 0 | grep osd_objectstore "osd_objectstore": "bluestore", [root@ceph1 ~]# ceph daemon osd.0 config get…
xinxiaoyu
  • 11
  • 2
1
vote
0 answers

Rook ceph manager unhealthy on k3s cluster

Some time ago, I created a ceph cluster with rook on a single node k3s cluster, just to try and it worked very well. I was able to give storage to other pods through cephfs. I followed the example given in the rook quickstart documentation to do…
rootmout
  • 23
  • 5
1
vote
1 answer

Ceph Luminous, what I miss?

With the previous Jewel release I had no problems. I have created a test cluster of 5 vms, all with Centos 7 and the Nautilus release of Ceph. 1 vm is a monitor, 3 are OSDs and 1 is admin-mgr. The deployment of the cluster is OK, the health is OK,…
elbarna
  • 597
  • 1
  • 10
  • 26
1
vote
1 answer

What is difference between iops of ceph status and rbd perf image iostat

Trying to find which rbd image is making most write-iops, but can't make any sense out from "rbd perf" output compared to "ceph status". What is difference between iops counters of ceph (160 op/s) vs rbd pref (WR 1/s)? ceph status | grep…
Mikko
  • 21
  • 4
1
vote
0 answers

How to create Ceph user & capabilities for Kubernetes CSI rbdplugin

When I follow the guide for Kubernetes block devices on Ceph RBD at https://docs.ceph.com/docs/master/rbd/rbd-kubernetes/ I get the following error at the user creation. ~# ceph auth get-or-create client.kubernetes mon 'profile rbd' osd 'profile rbd…
Pivert
  • 755
  • 5
  • 17
1 2 3
…
40 41