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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 complete installation of iscsigws on new cluster?

I am getting errors trying to install a new cluster with 2 iscsigws Errors I get are detecting tcmu-runner service as per below but once service is reloaded i get error related to attribute 2020-03-09 15:52:09,723 p=9931 u=owolfi | (1,…
givemeone
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Updating ceph clients before cluster?

All documentation recommends to first update all the ceph cluster (mon, osd, etc.) and then the clients. Is this very important? Because I have a cluster with the jewel version and we have one problem on the clients which is probably solved in…
Raffael Luthiger
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kubernetes nodes keep rebooting when using rook volumes

Several days ago I faced a problem when my nodes were rebooting constantly My stack: 1 master, 2 workers k8s-cluster built with kubeadm (v1.17.1-00) Ubuntu 18.04 x86_64 4.15.0-74-generic Flannel cni plugin (v0.11.0) Rook (v1.2) cephfs for storage.…
Kochetov Alexander
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Rookv1.2 does not add labels on CrushMap

I'm currently working with Rook v1.2.2 to create a Ceph Cluster on my Kubernetes Cluster (v1.16.3) and I'm failing to add a rack level on my CrushMap. I want to go from : ID CLASS WEIGHT TYPE NAME -1 0.02737 root default -3 0.01369 …
Ryctus
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CephFS failing to mount on Kubernetes

I set up a Ceph cluster and mounted manually using the sudo mount -t command following the official documentation, and I checked the status of my Ceph cluster - no problems there. Now I am trying to mount my CephFS on Kubernetes but my pod is stuck…
JYCH
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Ceph libRBD cache control

So Ceph has a user-space page cache implementation in librbd. Does it allow users to mention how much page cache to allocate to each pod? If yes, can we dynamically change the allocations?
Pranav Bhandari
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Forcing CEPH synchronization and advice for CEPH update

We use a CEPH cluster to store images of our virtual machines. This cluster contains 3 monitors, 4 storage nodes and 1 admin. CEPH OSD TREE ID WEIGHT TYPE NAME UP/DOWN REWEIGHT PRIMARY-AFFINITY -1 21.82190 root default -2 5.45547 host…
Keny
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Ceph Clock Skew

I want to know where I can configure the limit of skew time for my ceph monitors. Also,how does Ceph throw this clock skew error? Specifically from which file and where can I find the file so that I can edit? I am already running NTP and…
Zeeshan Haris
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How install Ceph on a kubernetes cluster

we want to use Ceph but we want to use Docker and Kubernetes to deploy new instances of Ceph quickly. I tried to use the default ceph docker hub: ceph/daemon-base. But I didn't work. I tried to use the ceph-container. Seems like it doesn't…
GrenierJ
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pg_num autoscaling on Ceph

I am new to Ceph, and have only used it in my homelab with 3 nodes of 2 osd's each. After reading about Nautilus and pg_num autoscaling I enabled this, but this was probably a mistake. now my cluster have this status. Someone have tip on how to get…
raymondbh
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how to get disk-usage of ceph by python

I want to get the disk-usage of my volumes that is on ceph. rbd -p volumes list volume-3968ca3d-d55f-47ac-9174-ff2614b0bde1 volume-493eee5c-3cdb-4c1c-b8d0-a24efba0c884 now I can get the usage by its ID rbd disk-usage…
yasin lachini
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Kubernetes, Rook, and Ceph: CephFS not working

My problem In Kuberentes, I built a Ceph cluster with Rook, and Ceph is reporting healthy state (ceph -s). But when I write file (cp -r) with CephFS, the file's content in CephFS is null, while if I use mv | cp -a it is normal. My…
UniQ
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Is it ever possible to reduce pg_num for specific pool

It's sad that I found it's not allowed by ceph cli to decrease the value of pg_num for a specific pool. ceph osd pool set .rgw.root pg_num 32 The error is shown: Error EEXIST: specified pg_num 32 <= current 128 The tutorial from placement-groups…
Eugene
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Spark uses s3a: java.lang.NoSuchMethodError

I'm doing something about the combination of spark_with_hadoop2.7 (2.4.3), hadoop (3.2.0) and Ceph luminous. When I tried to use spark to access ceph (for example, start spark-sql on shell), exception like below shows: INFO…
Eugene
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Method Not allowed in S3

I am trying to create a bucket with ceph and s3 library and get the below exception 405. Any pointers to resolve this issue? com.amazonaws.services.s3.model.AmazonS3Exception: null (Service: Amazon S3; Status Code: 405; Error Code:…
Minisha
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