crysis ceph

Tag: Ceph Storage Umount ErrorPhenomenon: [Email protected]:~# Umount/mnt/ceph-zhangboUmount:/mnt/ceph-zhangbo: The device is busy.(In some cases lsof (8) or fuser (1)) can be foundUseful information about processes that use the deviceWorkaround:1, according to the above tips, we use Fuser to check the use of the situation[Email protected]:~# fuser-m/mnt/

As Ceph is increasingly used in various storage business processes, its performance and tuning strategy has become a topic for users to pay close attention to, one of the key factors affecting performance is the OSD storage engine implementation; The Ceph base component Rados is a strong consistent, object storage System, The storage engines supported by its OSD are as follows:The ObjectStore layer encapsul

Edit Crush Map:1, obtain crush map;2, anti-compilation crush map;3. Edit at least one device, bucket, rule;4, recompile crush map;5, re-inject crush map;Get Crush MapTo get the crush map of the cluster, execute the command:Ceph OSD Getcrushmap-o {Compiled-crushmap-filename}Ceph will crush output (-O) to the file you specify, and because crush map is compiled, it needs to be recompiled;Anti-compilation Crush mapTo decompile the crush map, execute the c

Ceph1:VI/etc/hosts (on all nodes)127.0.0.1 localhost192.168.1.15 ceph1192.168.1.16 ceph2192.168.1.17 ceph3Ssh-keygen-Q-t rsa-f ~ /. Ssh/id_rsa-C ''-N''VI ~ /. Ssh/configHost ceph2Hostname ceph2User RootStricthostkeychecking NoHost ceph3Hostname ceph3User RootStricthostkeychecking NoSsh-copy-ID ceph2Ssh-copy-ID ceph3 To get latest CEpH-deploy: Wget-Q-o-'https: // ceph.com/git /? P = CEpH. Git; A = blob_plai

Crush Algorithm1, the purpose of crushOptimize allocation data, efficiently reorganize data, flexibly constrain object copy placement, maximize data security when hardware fails2. ProcessIn the Ceph architecture, the Ceph client is directly read and written to the Rados Object stored on the OSD, so ceph needs to go through (pool, Object) → (pool, PG) →osd set→osd

Ceph-dokan compiled using the following is compiled on the Win7 64-bit machine, running 1. Download the source code, compile can refer to the inside of the readme.md Https://github.com/ketor/ceph-dokan 2. Download TDM-GCC and install, select 32 bit (default) when installing Https://sourceforge.net/projects/tdm-gcc/files/TDM-GCC%20Installer/tdm-gcc-5.1.0-3.exe/download 3. Download and install Dokan, select v

Ceph RADOSGW Object Storage interface, research configuration for a long time, now share the following. The prerequisite for configuring RADOSGW first is that you have successfully configured the Ceph cluster to view the Ceph cluster through Ceph–s, in the health state. Here, the auth configuration of the

Nova ConfigurationDisk_cachemodes = "Network=writeback" (enabled)Change to Disk_cachemodes = "Network=none" (off) Ceph Configuration Open Ceph RBD CacheClientRbd_cache = TrueRbd_cache_writethrough_until_flush = TrueAdmin_socket =/var/run/ceph/guests/$cluster-$type. $id. $pid. $cctid. AsokLog_file =/var/log/qemu/qemu-guest-$pid. logRbd_concurre

Note: All operations below are performed at the admin node1, prepare three virtual machines, one as the admin node, the other two as the OSD node, and corresponding with the hostname command to modify the hostname to ADMIN,OSD0,OSD1, and finally modify the/etc/hosts file as shown below127.0.0.1 localhost10.10.102.85 admin10.10.102.86 osd010.10.102.87 OSD12. Configure password-free accessSsh-keygen //press ENTER to generate a public key to Ssh-copy-id-i/root/.ssh/id_rsa.pub

The Ceph Crush algorithm (controlled Replication under Scalablehashing) is an algorithm based on data distribution and replication for random control.Basic principle:Storage devices typically support stripe to increase storage system throughput and improve performance, and the most common way to stripe is to do raid. As RAID0.The data is distributed in strips on the hard disk in the array, which is the stored procedure of the data in all the hard driv

Ceph practice summary: the configuration of the RBD block device client in Centos, cephrbd Before proceeding to this chapter, you need to complete the basic cluster building, please refer to the http://blog.csdn.net/eric_sunah/article/details/40862215 Ceph Block devices are also calledRBDOrRADOS. Block Device During the experiment, a virtual machine can be used as the