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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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How to delete a file that is stored in Ceph via Block device mounted on Ubuntu?

I have followed the docs here and created a basic Ceph block device I can also read/write to the block device using basic C# file operation. Howerver when i delete a file using rm command in linux terminal, the file is removed from mounted device…
SHM
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openstack instance's image name lost after integration with ceph rbd

after integrated with ceph rbd,my openstack could not show "image name" of my instance, is there any option that controlling this feature? grep "^[^#]" /etc/glance/glance-api.conf [DEFAULT] show_image_direct_url = true [cors] [database] connection…
mrco
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Is there any way to run the Ceph filesystem on Windows?

Is there any dependency of Ceph on Linux file system. If not then is there any way to compile and run the filesystem on Windows. I am not looking to just run Ceph on Windows using any container.
user2327226
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How to access files on Ceph directly as URL

I need a storage system with the following requirements: 1. It should support data/service clustering 2. It should be open-source so that I can extend functionalities later if needed 3. It should support file system because I want to access some…
user2327226
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Where are Ceph clusters

I am new to Ceph. I wanted to know where are ceph data stored (I am not refering to OSDs). I mean is it stored on some remote data center ? If yes, are there any remote storage limits or I can put any amount of data ?
danish sodhi
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Ceph luminous Filestore to Bluestore migration stuck

I am migrating the Filestore backend on my tiny Ceph cluster (CentOS 7) to Bluestore (on Luminous). I am following the instructions (http://docs.ceph.com/docs/master/rados/operations/bluestore-migration/). For the last one hour, the PG re-placement…
everCurious
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Ceph Cluster down

I have a cluster with three Ceph nodes. The cluster was working fine, until we move one host to other physical location, since it we have the third node down, alwaya said OSD/MON down, and degraded data redundancy objects.
Juan Sebastian Leal Rojas
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Can't find Ceph when install on CentOS

I can't install Ceph on my centos 7 system. The error message is like: node.example.com][DEBUG ] This system is not registered with an entitlement server. You can use subscription-manager to register. [node.example.com][DEBUG ] Determining fastest…
Kisen.Chin
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Configuration to use CEPH as persistent storage?

I need to check performance of flink with Ceph storage. But I am not getting flink configuration for Ceph as storage. Could anyone post a configuration of flink with Ceph as a storage backend?
Vinod Gavhane
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How respawn a pod with persistent volume which stuck on failed node in Kubernetes

I have a simple k8s installation with few nodes and ceph (kubernetes.io/rbd) as storageclass. I have a deployment with a single pod which uses a persistent volume from the persistent volume claim (ReadWriteOnce) from this storage class. A node with…
George Shuklin
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Error Installing Ceph client on the Openstack node from Ceph monitor node

getting following error while installing ceph client from ceph monitor node using ceph-deploy install --cli . This seems due to version conflict in librbd1 & librados RuntimeError:failed to execute yum install -y ceph-common
chetan dev
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How to disable compiler optimization for Ceph?

I am building Ceph from source v12.2.4 using the steps mentioned in https://github.com/ceph/ceph/tree/v12.2.4 -- README.md git clone git://github.com/ceph/ceph cd ceph git checkout v12.2.4 ./install-deps.sh ./do_cmake.sh cd build make ctest on…
Nayana
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How do i set a watch on an object in ceph?

I am trying to keep a watch on an object in Ceph, but I don't know how to do it. I searched for examples online but could not find any. Found some documentation here. It says that I can use rados_watch to watch an object for changes. But I dont know…
Vishal
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Minimum machine requirement to setup a Ceph cluster

I need to setup a Ceph cluster for development purpose. How many machines are required to setup a Ceph cluster? Can I setup a Ceph cluster on a single machine?
Vinod Gavhane
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Ceph single node pool to multiple node

If I have a single Ceph node pool already in production, then the pool's setting is based on a single node. I then add another node by pvecm add cluster-ip. After adding the new node and have Ceph complete installing the osd, could I change the pool…
Napoleon Lam
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