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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 .

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CEPH raw space usage

I can't understand, where my ceph raw space is gone. cluster 90dc9682-8f2c-4c8e-a589-13898965b974 health HEALTH_WARN 72 pgs backfill; 26 pgs backfill_toofull; 51 pgs backfilling; 141 pgs stuck unclean; 5 requests are blocked > 32 sec; recovery…
virgism
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ceph health command returns a failure

i'm new to ceph but have to build a mini-cluster as part of a project, i have been following an online tutorial of how to build one and all was fine until i restarted my machines the following day. now when i perform the command ceph health it…
user9
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How to connect to ceph cluster from java program

I'm new to Ceph File system. I have setup 2-node ceph cluster and trying to figure out how to connect to it from java. I have read about libcephfs library but I am not getting how to use it and where to find all those classes. Please help.
dc4ual
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Shrink Kubernetes persistent volumes

I do have multiple persistent volumes which need to be shrinked to reduce the hosting costs. I already figured out that Kubernetes does not provide such an option. I also tried to clone or the restore the volumes from an snapshot to a new smaller…
Philipp Hölscher
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Multiple S3 credentials in a Spark Structured Streaming application

I want to migrate our Delta lake from S3 to Parquet files in our own on-prem Ceph storage, both accessible through the S3-compliant s3a API in Spark. Is there a possibility to provide different credentials for readStream and writeStream to achieve…
domnikl
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Configure LVM LV devices on rook ceph

I want to configure an LVM LV device on rook ceph. I am using the official helm charts of rook rook-ceph and rook-ceph-cluster. I have configured my LVM LV devices in the values.yaml of rook-ceph-cluster: ... cephClusterSpec: ... storage: …
Ronny Forberger
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Understanding snapshots in Ceph

Our team is currently deciding whether to implement snapshotting on cephfs directories or not, and thus trying to understand the effects and performance issues caused by snapshots on the cluster. Our main concern is "How will the cluster be affected…
NIKHIL KOMMINENI
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Resizing Pool to 1 has been disabled by default on Ceph Pacific stable 6.0

I implemented Ceph Pacific Stable 6.0 with Ceph-Ansible on Ubuntu 20.04 LTS but when I want to change size of my pool from 3 to 1 with following command: sudo ceph -n client.admin --keyring=/etc/ceph/ceph.client.admin.keyring osd pool set…
MrTshoot
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kubernates rook+ceph OSD full delete data

I have a situation where my OSDs are full 1 full osd(s) 2 nearfull osd(s) 2 pool(s) full and deleting the PVC is just stuck in "terminating". I tried the trick of forcing finalizers to null, but that still leaves data around. Next time I create a…
user3304297
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how to restart a Mon in a Ceph cluster

I am running a Ceph Cluster (pacific) consisting of 3 nodes. I have 3 Monitor Daemons started (one on each node). Just for some test I wanted to remove node3 out of the list of monitors with the command sudo ceph mon remove node3 The mon…
Ralph
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How to seperate BlueStore from ceph and run it solely?

I am learning BlueStore. I want to run it so that I could get a concrete workflow. However, BlueStore is integrated into CEPH which makes it difficult for me to focus only on what I interest. So how could I separate BlueStore from CEPH and run it…
tuffy chow
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why do I get empty by calling get_object(self._bucket_name, object_name) of Minio?

I am using S3 cluster. My SDK is Minio. My client code is: _client = Minio(domain, access_key=access_key, secret_key=secret_key) I can fetch the file and save to my local from S3 cluster by calling _client.fget_object(self._bucket_name,…
taichi_tiger
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Is it efficient to store images inside MongoDB using GridFS?

I know how to do it, but I wonder if it's effective. As I know MongoDB has very efficient clusters and I can flexibly control the collections and the servers they reside on. The only problem is the size of the files and the speed of accessing them…
Doumor
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Boto3 put_object() fails when I am using SSECustomerKey

I have been trying for the past day to load some encrypted text to a Ceph object storage, but whenever I try, I get the following error: botocore.exceptions.ClientError: An error occurred (InvalidRequest) when calling the PutObject operation:…
Nisu
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Recover Data from Deleted RBD Volume?

Is there any way to recover data from deleted RBD volume in Ceph? thanks $ ceph osd map pool-name csi-vol-65c11863-32e1-11eb-a202-cab20b4e04f6 osdmap e2248 pool 'pool-name' (8) object 'csi-vol-65c11863-32e1-11eb-a202-cab20b4e04f6' -> pg 8.e5d09b91…
Phan Hoang Hai
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