Rook quick start Ceph integrated storage

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 ...

Posted on Wed, 08 Jan 2020 05:09:33 -0500 by ch3m1st

High speed hot standby state of CEPH MDS

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 . ...

Posted on Mon, 06 Jan 2020 03:39:07 -0500 by acheoacheo

ceph fixes osd as down

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 ...

Posted on Wed, 01 Jan 2020 07:58:52 -0500 by bsbotto

DaemonSet of Kubernetes Resource Object

DaemonSet is a new resource object in Kubernetes version 1.2 DaemonSet enables all (or some specific) Node nodes to run only one Pod.When a node joins a kubernetes cluster, the Pod is scheduled to run on that node, when the node is removed from the kubernetes cluster, the Pod scheduled by the DaemonSet is removed, and if the DaemonSet is delet ...

Posted on Sun, 22 Dec 2019 16:08:44 -0500 by dgrinberg

Mapping from serial port to usb1.0 to kvm virtual machine

1. The requirements are as follows: the traditional serial port used by SMS wants to connect to the business and send SMS according to the business settings. The business service is a virtual machine running on kvm, but there is no usb 1.0 interface added on kvm, so we can only mount usb serial port by writing xml ourselves. 2. Log in to the ...

Posted on Thu, 12 Dec 2019 09:33:54 -0500 by phpforever

[mimic] ceph cluster set up manually

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 ...

Posted on Tue, 26 Nov 2019 15:47:23 -0500 by Cynthia Blue

K8s statefullset details

Summary StatefulSetRC, Deployment and DaemonSet are all stateless services. The IP address, name and start stop sequence of the Pod they manage are all random. What is stateful set? As the name implies, stateful collections manage all stateful services, such as MySQL and MongoDB clusters.Statefullset is essentially a variant of Deployment, whi ...

Posted on Mon, 25 Nov 2019 05:23:52 -0500 by ihcra

CentOS7 disk management

I. disk viewing View all disks ll /dev/sd* Disks without numbers, partitions with numbers   View partition status of all disks fdisk -l Result WARNING: fdisk GPT support is currently new, and therefore in an experimental phase. Use at your own discretion. Disk /dev/sdd: 1000.2 GB, 1000204886016 bytes, 1953525168 sectors ...

Posted on Thu, 31 Oct 2019 21:03:30 -0400 by kaozdragon

Configuring the cinder volume service to use ceph as back-end storage

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 ...

Posted on Sun, 20 Oct 2019 16:33:32 -0400 by BrianPeiris

kubeadm -- fast installation of k8s cluster

The main steps are as follows: https://www.kubernetes.org.cn/5551.html This example uses kubeadm to install k8s 1.15, and the system is centos7; Premise: can be subject study online Record of main steps: 1. Install docker, omitted;2. Configure the Ipvs module, which will be used by the Kube proxy; cat > /etc/sysconfig/modules/ipvs.modules  ...

Posted on Sun, 20 Oct 2019 16:14:56 -0400 by windwaker