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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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Kubernetes: Can I mount different subPaths from the same PV onto different locations of the same container?

Can I mount different subPaths from the same PV onto different locations of the same container? I run several wordpress instances on my company's Kubernetes cluster. Each instance has its own persistency volume and a container. The only peculiarity…
leonixyz
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Spark - dynamic allocation - shuffle_1_0_0.index (No such file or directory)

I am running in following error from time to time while executing my scala job on Spark 2.2.0: Caused by: java.io.FileNotFoundException:…
Stephan
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How are Storage Objects created from a file on Object Storage Cloud?

I am defining Objects broken down from a file to be stored in Object Storage Cloud, as Storage Objects. What I know: I have read documents and papers about object storage cloud. Most of the time, the documents assume that storage objects from a…
Zwon
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Access CephFS inside Docker container without mounting CephFS on the host

I have a test node running Ceph where about 10TB of data are stored in a CephFS filesystem. I want to make certain subpaths in the CephFS file available to a Docker container where it can be shared over NFS and SMB. The osds, mons and mds' are…
Jesper
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Rook-Ceph OSD pods not getting created

I have a fresh cluster with a few nodes. Each node is a Linux VM with a 6GB device mounted at dev/sdc1 which I would like to use. When I try to create the rook ceph cluster, rook-ceph-osd-prepare pod logs shows that it is skipping dev/sdc1 because…
Kiran Ramesh
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cephadm: Not able to add nodes to ceph cluster (Error EINVAL: Failed to connect to host)

I followed the following steps from https://docs.ceph.com/en/latest/cephadm/install/ to setup a ceph cluster on Centos 8.1 curl --silent --remote-name --location https://github.com/ceph/ceph/raw/octopus/src/cephadm/cephadm chmod +x cephadm ./cephadm…
Shounak
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Rook ceph broken on kubernetes?

Using Ceph v1.14.10, Rook v1.3.8 on k8s 1.16 on-premise. After 10 days without any trouble, we decided to drain some nodes, then, all moved pods cant attach to their PV any more, look like Ceph cluster is broken: My ConfigMap rook-ceph-mon-endpoints…
Thomas Decaux
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kubernetes: Unable to attach or mount volumes timed out waiting for the condition

my question is about this: Type Reason Age From Message ---- ------ ---- ---- ------- Normal Scheduled …
jisnardo
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New ceph cluster keep pg undersized+peered and rbd ls stuck

I've created a new ceph cluster with 1mon 1mds 1mgr and 15osd. After setup everything is right, but pg state keeps undersized+peered. All disk is freshly installed stand-alone XFS, size range from 3TB to 4TB without a partition table. All osd log…
NStal
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What is the meaning of -95 error code that is returned from rados_clone_range?

I have Ceph rados client for node.js version 12.4.0. I want to copy a portion of one object to another. And there is a method written for this operation. Its name is clone_range and it use rados_clone_range function of librados. Error code -95…
Burcu Karabağ
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Ceph storage usable space calculation

Can some help me with below question. How I can calculate total usable ceph storage space. Lets say I have 3 nodes and each nodes has 6 OSD of 1TB disk . That is total of 18TB storage ( 3* 6TB ) .All these 18TB space is usable or some space will go…
SARATH CHANDRAN
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mounting cephfs with secretfile

I'm trying to mount cephfs and it's ok with password: mount -t ceph ceph-mon:6789:/docker /mnt/cephfs -o name=admin,secret=admin-pass However, if I use secretfile, it fails: mount -t ceph ceph-mon:6789:/docker /mnt/cephfs -o…
Zhenshi Zhou
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Ceph radosgw - bucket policy - make all objects public-read by default

I work with a group of non-developers which are uploading objects to an s3 style bucket through radosgw. All uploaded objects need to be publicly available, but they cannot do this programmatically. Is there a way to make the default permission of…
Josh Worley
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Java aws sdk - The specified location-constraint is not valid (non-amazon)

I would like to create a bucket in the ceph object storage via the S3 API. Which works fine, if I use Pythons boto3: s3 = boto3.resource( 's3', endpoint_url='https://my.non-amazon-endpoint.com', aws_access_key_id=access_key, …
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Unable to deploy a Ceph manager daemon with ceph-deploy: Error EACCES: access denied

I am trying to set up a Ceph storage cluster using the quick start guide found here: http://docs.ceph.com/docs/master/start/quick-ceph-deploy/ When I try to deploy a manager daemon using this command: ceph-deploy mgr create enickel7 I get this…
Lillian Zhang
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