ceph

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

incrementing, osdmap per change plus 1 4.current_interval Past interval: An epoch sequence in which the acting set of this PG has not changed, current is the present sequence, and past refers to the 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 m

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

I recently needed to test the rgw of CEpH in my work, so I learned while testing. First, the tool uses Intel's open-source tool cosbench, which is also the industry's mainstream object storage testing tool. 1. cosbench installation and startupDownload the latest cosbench packageWget https://github.com/intel-cloud/cosbench/releases/download/v0.4.2.c4/0.4.2.c4.zipExtractUnzip 0.4.2.c4.zip Install related ToolkitYum install java-1.7.0-openjdk NMAP-ncat

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

Phenomenon:The question of request blocked is often found through the Ceph-w log (if the virtual machine system runs on Ceph, it will find a serious lag)Investigation:1, through the Dstat did not find a significant bottleneck (Dstat-tndr 2)2, through the Iostat also found no obvious bottleneck (IOSTAT-DX 2)3, through the Netstat also did not find the Storage Network network card send queue or receive queue

target_bytes as large as possible.Sets the number of objects in a pool (default is calculated for each object 2M capacity, the total capacity of this value is 100T)[Email protected] ~]# ceph OSD Pool Set-quota data max_objects 50000000Set-quota max_objects = 25000000 for pool dataSet the data pool to a maximum storage space of 100T[[email protected] ~]# ceph OSD Pool Set data target_max_bytes 1000000000000

First, view QEMU-KVM/usr/libexec/qemu-kvm-drive=?Supported FORMATS:VVFAT VPC vmdk VHDX VDI Sheepdog RBD Raw host_cdrom host_floppy host_device file QED qcow2 qcow Paralle LS NBD iSCSI gluster dmg cloop Bochs blkverify blkdebugThe supported formats contains RBD to support Ceph RBDSecond, view qemu-imgQemu-img-Hsupported formats:vvfat VPC vmdk VHDX VDI Sheepdog RBD Raw host_cdrom host_floppy host_device file QE D qcow2 Qcow parallels NBD iSCSI gluster D

Job Responsibilities:Participate in building cloud storage services, including development, design, and operational work?Requirements for employment:1, Bachelor degree or above, more than 3 years of storage system development, design or operation and maintenance work experience;2, familiar with the Linux system and understanding of the kernel, cloud computing, virtualization have some knowledge;3, have Ceph, Glusterfs and other distributed storage of

Official documents:http://docs.ceph.com/docs/master/cephfs/http://docs.ceph.com/docs/master/cephfs/createfs/(create CEPHFS file system)Ceph official Chinese Documentation:http://docs.ceph.org.cn/Configuration in OpenStack:http://docs.ceph.com/docs/master/rbd/rbd-openstack/Blogs, etc.:http://blog.csdn.net/dapao123456789/article/category/2197933Http://docs.openfans.org/ceph/ceph4e2d658765876863/

Tags: iostat dd smartctlTest disk usage in Ceph environment when writing to the cache drive[Email protected] ~]# lsblkNAME maj:min RM SIZE RO TYPE mountpointSr0 11:0 1 1024M 0 romSDB 8:16 0 20G 0 disk└─cachedev-0 (dm-4) 253:4 0 20G 0 dm/sandstone-data/sds-0SDA 8:0 0 50G 0 disk├─SDA1 8:1 0 500M 0 part/boot└─sda2 8:2 0 49.5G 0 part├─volgroup-lv_root (dm-0) 253:0 0 45.6G 0 LVM/└─volgroup-lv_swap (dm-1) 253:1 0 3.9G 0 LVM [swap]SDC 8:32 0 20G 0 disk├─vg_m

In centos6.3, to use CEpH block device, you must install a later version of qemu.Install qemu-1.5.2 after CEpH is installed# Tar-xjvf qemu-1.5.2.tar.bz2# Cd qemu-1.5.2#./Configure -- enable-RBDYou must add the -- enable-RBD option so that qemu can support the RBD protocol.In this step, an error may be reported:Error: user requested feature rados block DeviceConfigure was not able to find itThis is because t

Because the kubelet itself does not support RBD commands, a kube system plugin is required:Download Plugin Quay.io/external_storage/rbd-provisioner：Https://quay.io/repository/external_storage/rbd-provisioner?tag=latesttab=tagsDownload Docker pull quay.io/external_storage/rbd-provisioner:latest on node of k8s clusterInstall only the plugin itself will error: need to install kube roles and permissions The following are:Https://github.com/kubernetes-incubator/external-storageHttps://github.com/kube

Using the Ceph OSD Tree command to view the Ceph cluster, you will find weight and reweight two values Weight weight and disk capacity, general 1T, value is 1.000, 500G is 0.5 It is related to the capacity of the disk and does not change due to reduced disk available space It can be set with the following command Ceph OSD Crush Reweight The reweight is a v

Ceph Cluster Problem Grooming Created: Linhaifeng, last modified: Yesterday 5:35 afternoon 1: Will the data be sent to the log disk and deleted immediately or delayed?Validation: Tuning Parameters#从日志到数据盘最大同步间隔间隔秒数, Default: 5Filestore Max sync interval = 15Process Analysis: A client object sent to Ceph's PG, note that the log is written to return the results, and then within 15 seconds of the interval,Three OSD node data is synchronized

1 Describe my deployment environment first:2 osd,1 monitor,1 Console Management Server, 1 client, are 24 cores, 64G memory, 1.6T SSD flash card, gigabit network card; The Ceph version currently installed is 0.94.7.2 Current statusI use the DD command to write 5G data, using Iostat to observe%util immediately 100% Ah, while the await indicators are more than 4,000, and at this time the network bandwidth is only used around 10M.650) this.width=650; "Src

, color_ffffff, t_100, g_se, x_10, y_10, shadow_90, type_zmfuz3pozw5nagvpdgk =) each host must execute the preceding commands. Install CEpH pveceph install! [] (Http://i2.51cto.com/images/blog/201811/02/9e7e3aaaaf1a07840c02dc6884324e5a.jpg? X-OSS-process = image/watermark, size_16, expires, color_ffffff, t_100, g_se, x_10, y_10, shadow_90, type_zmfuz3pozw5nagvpdgk =) the preceding command is installed on each host. Run the command pveceph init -- netw

Machine Room operation error caused the rack or host power down is the occasional thing, then how in this case, let the Ceph service with the OS startup and fast start? Here is a simple method:Execute the following command on the OSD host:sudo ln-s/usr/lib/systemd/system/[email protected]/etc/systemd/system/multi-user.target.wants/[email protected]sudo systemctl enable [email protected]sudo systemctl is-enabled [email protected]Execute the following c

[Ceph_deploy] [ERROR] Runtimeerror:failed to execute Command:ceph-disk-activate–mark-init sysvinit–mount/dev/sdb1To be honest, the question is two.I put the OSD in a separate partition SDB executes the commands that are:Ceph-deploy OSD Prepare NETWORK:/DEV/SDB1Ceph-deploy OSD Activate NETWORK:/DEV/SDB1The above is wrong.The right thing isCeph-deploy Osd–zap-disk Create Network:sdbCeph-deploy OSD Prepare NETWORK:/DEV/SDB1:/DEV/SDB2Ceph-deploy OSD Activate NETWORK:/DEV/SDB1:/DEV/SDB2The problem is

Have you modified/sys/block/sdk/queue/read_ahead_kb read_ahead?Modified to 8192, the default value is 128;is the SATA disk OSD changed to 8192? How much of a performance boost?In addition, this value should be modified at any time, right? Can it be dynamically adjusted after deployment?What effect will it have on the OSD?can improve read performanceCan be modified in real timeWhat does this parameter mean?Pre-read bytes?This parameter is useful for sequential reads, meaning how much content to r