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View pools Create a pool containing 64 PGs and 64 PGPS       [root@node-1 ~]# ceph osd pool create ceph-demo 64  64 pool 'ceph-demo' created [root@node-1 ~]# ceph osd lspools 1 ceph-demo View pg and pgp [root@node-1 ~]# ceph osd pool get ceph-demo pg_num pg_num: 64 [root@node-1 ~]# ceph osd pool get ceph-demo pg ...

Detailed explanation of PG abnormal state and fault summary reference resources: https://www.jianshu.com/p/36c2d5682d87 https://blog.csdn.net/wylfengyujiancheng/article/details/89235241?utm_medium=distribute.pc_relevant.none-task-blog-2defaultbaidujs_baidulandingword~default-1.no_search_link&spm=1001.2101.3001.4242 https://github.co ...

Reference connection:< https://docs.ceph.com/docs/master/ 2.1 cluster planning At least three Centos7 system virtual machines are used to deploy Ceph cluster. Hardware configuration: 2C4G. In addition, each machine should be equipped with at least three hard disks (5g for each disk) HOST IP Service Mark cephmanager01 public network:1 ...

1. PG introduction This time, I'd like to share the detailed explanation of various states of PG in Ceph. PG is one of the most complex and difficult concepts. The complexity of PG is as follows: At the architecture level, PG is in the middle of the RADOS layer. a. Up is responsible for receiving and processing requests from clients. b. The ...

Originally, I wanted to use CEPH fuse, but as a result, I always reported mount can't read super Block error, but I only installed the rpm package of CEPH fuse for the host. kublet is actually using the kernel mount mode to mount cephfs. This is a mistake that can't be repeated. But how to specify kubelet to use CEPH fuse to mount cephfs? I goo ...

1. Ceph combined with volumes Objective: to achieve Ceph RBD and kubernetes volumes integration. 1.1 preparations 1. Creating pool s and users [root@node-1 ~]# ceph osd pool create kubernetes 8 8 2. Create an authenticated user [root@node-1 ~]# ceph auth get-or-create client.kubernetes mon 'profile rbd' osd 'profile rbd pool=kubernetes' [clie ...

Article Directory Preface First: The theoretical basis of CEPH 1.1: Overview 1.2: Related concepts 1.3: No central architecture at all 2: Deploy CEPH cluster 2.1: Deploying a CEPH environment 2.2: CEPH cluster building 2.3: CEPH Cluster Management Page Installation 3: docking between CEPH and ope ...

1. Post it first to help with the information auth add <entity> {<caps> [<caps>...]} add auth info for <entity> from input file, or random key if no input is given, and/or any caps specified in the command auth caps <entity> <c ...

1. Configure host, install ntp (not required)2. Configure Secret-Free ssh3. Configure ceph, yum source vim /etc/yum.repo.d/ceph.cepo [ceph] name=ceph baseurl=http://mirrors.cloud.tencent.com/ceph/rpm-luminous/el7/x86_64/ gpgcheck=0 priority=1 [ceph-noarch] name=cephnoarch baseurl=http://mirrors.cloud.tencent.com/ceph/rpm-luminous/el7/noarch/ ...

1: rbd introduction A block is a sequence of bytes (for example, a 512 byte block of data). Block based storage interface is the most commonly used method to store data using rotating media (such as hard disk, CD, floppy disk or even traditional 9-track tape). The ubiquitous block device interface makes the virtual block device an ideal candi ...