ceph releases

, error detection, error recovery will bring great pressure to the client, controller, metadata directory node, and limit the scalability.We have designed and implemented Rados, a reliable, automated distributed object store that seeks to distribute device intelligence to complex thousands of-node-scale clusters involving data-consistent access, redundant storage, error detection, and recovery of logging problems. As part of the Ceph Distributed syste

Cachetier is a ceph server-side caching scheme, simply add a layer of cache layer, the client directly with the cache layer to deal with , improve access speed, the backend has a storage layer, Actually store large amounts of data. The principle of tiered storage is that the access to the stored data is hot, and the data is not evenly accessed. There is a general rule called the 28 principle, that is, 80% 's application only accesses 20% data, this 20

One, Ceph replacement drive process:1. Delete OSD:A, stop the OSD daemonStop Ceph-osd Id=xB, Mark OSD outCeph OSD out OSD. XC, OSD Remove from CrushmapCeph OSD Remove OSD. XD, Delete ceph anthentication keysCeph Auth del osd. XE, remove OSD from Ceph clusterCeph OSD RM OSD. X2, add OSD (warning: Add after deletion, OSD

ceph configuration parameters (i)6. Keyvaluestore CONFIG REFERENCEHttp://ceph.com/docs/master/rados/configuration/keyvaluestore-config-ref/KeyValueStore is an alternative OSD Backend compared to Filestore. Currently, it uses LevelDB as backend. Keyvaluestore doesn ' t need journal device. Each operation would flush into the backend directly. Back end (LEVELDB) used by the Keyvaluestore:keyvaluestore Backend (1) Queue Maximum num

Ceph configuration parameters (2)Ceph configuration parameters (a) 6, keyvaluestore config reference http://ceph.com/docs/master/rados/configuration/keyvaluestore-config-ref/ KeyValueStore is an alternative OSD backend compared to FileStore. currently, it uses LevelDB as backend. keyValueStore doesn' t need journal device. each operation will flush into the backend directly. the backend (leveldb) used by Ke

The basic idea of the cache tiering is the separation of hot and cold data, the use of relatively fast/expensive storage devices such as SSD disks to form a pool as the cache layer, the backend with relatively slow/inexpensive devices to form a cold data storage pool.The Ceph cache tiering Agent handles automatic migration of data from the cache layer and storage layer, transparently to client transparent operations. The Cahe layer has two typical mod

Have no time to write on business trip ...Create 150 OSD Today, find manual write ceph.conf a bit big, researched the increment function of vim.Very simple is a command:: Let I=0|g/reg/s//\=i/|let i=i+1It can match the Reg in your text and then follow your i+n, increasing +n per passThe function of the above command is to find the Reg character in the text, then replace it with 0 from the first, then +1So in the ceph.conf, we can first copy out 150 [OSD.GGGG], and then in the use of the above co

This is a creation in Article, where the information may have evolved or changed. All the places involved in storage are very prone to "pits", Kubernetes is no exception. First, the cause of the problem The problem began yesterday by upgrading the operation of a stateful service. The pod under the service is mounted with a persistent Volume provided with Ceph RBD. The pod is deployed with normal deployment and does not use the Petset in Alpha state. T

I. OverviewCephfs is a CEpH cluster-based file system that is compatible with POSIX standards.When creating a cephfs file system, you must add the MDS service to the CEpH cluster. This service processes the metadata part in the POSIX file system, and the actual data part is processed by the osds in the CEpH cluster.Cephfs supports loading by using INCORE modules

Ceph file system installation, Yum install-y wgetwget https://pypi.python.org/packages/source/p/pip/pip-1.5.6.tar.gz#md5=01026f87978932060cc86c1dc527903etar zxvf pip-1.5.6.tar.gzcd pip-1.5.6python setup. py buildpython setup. py installssh-keygen ################################## echo" ceph-admin ">/etc/hostname # echo" ceph-node1 ">/etc/hostname # echo"

Ceph crush the question to read over and over again, the relevant chapters of the CEPH source analysis book are summarized as follows:4.2.1 Hierarchical Cluster MapExample 4-1 Cluster map definitionHierarchical cluster map defines the static topology of the OSD cluster with hierarchical relationships. The level of the OSD enables the crush algorithm to realize the ability of the rack-aware (rack-awareness)

Ceph configuration parameters (1)1. POOL, PG AND CRUSH CONFIG REFERENCEConfiguration segment: [global] format: osd pool default pg num = 250 maximum pg count per storage pool: number of seconds between creation of pg in the same OSD Daemon in the mon max pool PG num: how many seconds does the mon pg create interval wait PG can be considered to be the master: mon pg stuck thresholdCeph OSD Daemon on PG flag bits: osd pg bitsCeph OSD Daemon PGP bits: os

1. Manually format each disk, such as/DEV/SDB1 for data partitioning and/DEV/SDB2 for log partitioning. 2. Mkallxfs 3. Modify the/etc/ceph/ceph.conf file: [Global]authsupported=noneosdpooldefaultsize=2osdcrush chooseleaftype=0objecter_inflight_op_bytes=4294967296objecter_inflight_ops=1024#debug filestore=100#debugosd=10debugjournal=1filestore blackhole=falsefilestorequeuemaxops=1024filestorequeuemaxbytes= 1073741824filestoremaxsyncinterval=5#osdopnumt

message if the version number is larger than accepted, and to proposer reply Promise message that promises not to accept Prepare messages with a version number less than V ; Proposer received Promise message, statistics approved version V of the number of acceptor , if more than half, it is considered that this version is currently the latest (can be submitted). Phase2-a:proposer participation Proposer resets the timer Tp, sends the acceptrequest message to each a

Reprint annotated source, Chen Trot http://www.cnblogs.com/chenxianpao/p/5770271.htmlFirst, installation environmentos:centos7.2vsm:v2.1 releasedSecond, installation instructionsThe VSM system has two roles, one is Vsm-controller and the other is vsm-agent. The vsm-agent is deployed on a ceph node, and the Vsm-controller is deployed on a separate node. Vsm-controller should also be deployed on CEPH nodes wi

In the previous article, we introduced the use of CEpH-deploy to deploy the CEpH cluster. Next we will briefly introduce the CEpH operations. Block device usage (RBD)A. Create a user ID and a keyringCEpH auth get-or-create client. node01 OSD 'Allow * 'mon 'Allow * '> node01.keyringB. Copy the keyring to node01.SCP node01.keyring [email protected]:/root

Owncloud Introduction:is a free software developed from the KDE community that provides private WEB services. Current key features include file management (built-in file sharing), music, calendars, contacts, and more, which can be run on PCs and servers.Simply put is a PHP-based self-built network disk. Basically private use this, because until now the development version has not exposed the registration function. I use the php7.1-based lamp environment to build this owncloud next article will i

past interval. Last_epoch_started: Last peering after the Osdmap version number epoch. Last_epoch_clean: Last recovery or backfill after the Osdmap version number epoch. (Note: After the peering is finished, the data recovery operation is just beginning, so last_epoch_started and Last_epoch_clean may differ). For example: The current epoch value of the Ceph system is pg1.0, and the acting set and up set are all [0,1,2] Osd.3 failure resulte

Keyvaluestore is another storage engine that Ceph supports (the first is Filestore), which is in the Emporer version of Add LevelDB support to Ceph cluster backend store Design Sum At MIT, I put forward and implemented the prototype system, and achieved the docking with ObjectStore in the firely version. is now incorporated into Ceph's Master. Keyvaluestore is a lightweight implementation relative to Filest

Ceph uses block storage, and the system kernel needs to 3.0 and above the kernel to support some ceph modules. You can specify a type when creating a block (Type1 and type2) , only type2 can protect the snapshot and protect it before cloning. Complete operation process with block device:1 , creating a block device ( in M)RBD Create yjk01--size 1024x768--pool vms--image-format 2RBD info yjk01--pool VMSRBD