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osd crush weight osd weight crushtool modifies crushmap test When we execute the ceph osd tree command, a WEIGHT and REWEIGHT are displayed in the display. What are they? [root@xt7 ceph]# ceph osd tree //The second column corresponds to osd crush weight, and the last column corresponds to osd weight ID WEIGHT ...

Actual Target To learn how to use Ceph, first you need a Ceph cluster. This paper deploys a Ceph cluster through ceph-deploy, a tool to automate the deployment of Ceph, masters the method of Ceph cluster deployment, the deployment of Ceph core components, and then masters the interactive use of CEPH client commands to create pool s and rbd blo ...

Ceph is the most popular distributed storage system today. This article records the detailed steps of installing and configuring Ceph. Configure work in advance Start with the first cluster node, and then gradually add other nodes. For Ceph, the first node we join should be Monitor, which we set to ...

Article Directory Preface Step 1: Define a callback function Step 2: Common functions call callback functions Common Function Function Implementation Step 3: Examine one of the group sub-modules Step 4: Reuse id to control the development of team members Preface The first step in the learning of ...

Quick start Official website address: https://rook.io/ Project address: https://github.com/rook/rook Installation cluster Prepare osd storage media Hard disk symbol Size Effect sdb 50GB OSD Data sdc 50GB OSD Data sdd 50GB OSD Data sde 50GB OSD Metadata >Before installation, use the command lvm lvs,lvm vgs and lvm pvs to check w ...

The MDS of ceph is the metadata service of cephFS file storage service. When cephfs is created, there will be ceph mds services for management. By default, ceph assigns an mds service to manage cephfs, even if multiple mds services have been created, as follows: [root@ceph-admin my-cluster]# ceph-deploy mds create ceph-node01 ceph-node02 . ...

Try 1. Directly reactivate all OSDs 1. View osd tree [root@ceph01 ~]# ceph osd tree ID WEIGHT TYPE NAME UP/DOWN REWEIGHT PRIMARY-AFFINITY -1 0.29279 root default -2 0.14639 host ceph01 0.14639 osd.0 up 1.00000 1.00000 ...

1 Introduction to Core Components Object The lowest storage unit in Ceph is an Object object, each containing metadata and raw data. OSD OSD is fully named Object Storage Device, which is the process responsible for returning specific data in response to client requests.A Ceph cluster generally has many OSDs. PG The full name of PG, Placement ...

Execute on ceph monitor CINDER_PASSWD='cinder1234!' controllerHost='controller' RABBIT_PASSWD='0penstackRMQ' 1. Create pool pool Create a pool pool for the cinder volume service (since I have only one OSD node, set the number of replicas to 1) ceph osd pool create cinder-volumes 32 ceph osd pool set cinder-volumes size 1 ceph osd pool applicat ...

Storage class storage class is a kubernetes resource type, which is created on demand by administrators for the convenience of managing PV The advantage of storage class is to support the dynamic creation of PV. Dynamic creation of adapted PV according to the requirement standard of PVC will bring great flexibility to storage management. Th ...