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Questions tagged [ceph]

Ceph is a free software storage platform designed to present object, block, and file storage from a single distributed computer cluster.

Ceph is a free software storage platform designed to present object, block, and file storage from a single distributed computer cluster. Ceph's main goals are to be completely distributed without a single point of failure, scalable to the exabyte level, and freely-available.

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Ceph OSDs and journal drives

I have a separate drive for each of my ceph OSD servers. Each OSD host has 4 data drives. Does one journal drive serve the 4? Is the journal drive shared? Should there be a partition for each data drive?
HorseHair
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OpenStack Redundant Ceph/Cinder Storage Architecture

Hello Serverfault community, I'm currently designing an OpenStack cluster. The part where I'm currently stuck is the Storage Architecture. I thought of building two redundant Ceph clusters in different racks with a different fuse and UPS. So far so…
Phinitris
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Ceph installs without init scipts. How do I get them?

I have installed ceph in 3 centos7 nodes with ceph-deploy tool. All works good but I haven't any script to manage ceph or radosgw. My /etc/init.d/ folder contains only these: functions, network, netconsole, rdbmap. Nothing else. So I can not run…
Oleksandr
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Ceph: HEALTH_WARN clock skew detected

I have configured ntp on Ceph nodes and time is synchronized! But ceph status always shows clock skew. ceph health detail shows: mon.node2 aadr 192.168.56.102:6789/0 clock skew 7192.45s > max 0.05s (latency 0.0129368s) mon.node3 aadr…
Oleksandr
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OpenShift Origin and Ceph persistent volume

I have installed OpenShift Origin from latest ansible install. (CentOS 7 - 3 masters and 7 nodes) [root@master-1 ~]# openshift version openshift v1.1.0.1-1-g2c6ff4b kubernetes v1.1.0-origin-1107-g4c8e6f4 etcd 2.1.2 I am trying to create CEPH…
calvix
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Expanding/Growing OCFS2 forever

I have a kvm environment where a shared disk mounted by 2 VMs through rbd ceph. What I would like to know that in the future how is it possible to expand OCFS2 filesystem what I planning to use on top of it: LVM2 is not an option: "As of this…
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KVM debian wheezy packages with ceph support

Does anybody know any packages out there for kvm which are compiled with RBD support? I have these installed right now: ii kvm 1:1.1.2+dfsg-6+deb7u8 amd64 dummy transitional package from kvm to…
mongo533
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Logstash matching ceph client and server separation

So I have a fresh logstash install and I am trying to deploy logstash to get a handle on the logs. I am going through and will eventually segment the logstash filters based on subsystem and currently I am working on parsing osd logs. Here is a…
Lookcrabs
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Simple scheme for backup virtual machine, which drawback of simple DD?

We've been struggling to create the consistent scheme for backup of KVM virtual machines under Proxmox control and Ceph as storage, but still quite often during the vzdump with a snapshot the virtual machine is going down 120: dic 05 04:51:47 INFO:…
Igor
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File system benchmark that generates I/O from distribution of file sizes

I am looking for a file system benchmarking tool to test CephFS. This benchmarking tool has to: Generate a set of files (call it fileset) following a particular distribution, e.g., gamma, empirical, non-archival, or fitted whatever, etc. Based on…
shoosah
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Object storage: when to choose OpenStack (Swift) vs. Ceph

Swift (OpenStack) and Ceph are both open source projects that implement object storage. What are the factors to consider when trying to decide which one to deploy? Under what scenarios would you choose Swift, and what scenarios would you choose…
Lorin Hochstein
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Dedicated Network connection for CEPH or aggregated general purpose network connection?

We are building a Kubernetes Cluster on bare metal. As the cluster is getting physically installed, I was asked to weigh in on the following question: Each node has two network connections of 25Gbps. We will be using Ceph as a Filesystem for the…
bountrisv
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Where do I find a script to check a Ceph iSCSI gateway configuration?

On a Ceph cluster with iSCSI gateway we have an issue with gateway configuration changes being applied partially. The result is a broken gateway.conf, which goes unnoticed until (possibly weeks later) a gateway is restarted, for whatever reason, at…
reinierpost
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How to configure a CEPH host with public and private NICs

So here is the situation. I am deploying CEPH on a public cloud using cephadm. I am trying to create a private,public network config as described here First we bootstrap the monitor with ceph boostrap --mon-ip --cluster-network…
mohamed emad
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Is running CEPH on public cloud without data replication a good idea?

My startup is thinking about adopting CEPH for block storage (and other features it provides). Most of our infrastructure runs on public cloud (DO,GCP,AWS,etc...). On public cloud data storage you usually have a bunch of guarantees with regards to…
mohamed emad
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