I. disk viewing
View all disks
Disks without numbers, partitions with numbers
View partition status of all disks
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
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
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
storage class is a kubernetes resource type, which is created on demand by administrators for the convenience of managing PV
The advantage of storage class is to support the dynamic creation of PV. Dynamic creation of adapted PV according to the requirement standard of PVC will bring great flexibility to storage management.
Posted on Tue, 08 Oct 2019 09:46:02 -0400 by bobcooper
(1) Looking at the cluster status, two osd states are down
[root@node140 /]# ceph -s
noout flag(s) set
2 osds down
1 scrub errors
Possible data damage: 1 pg inconsistent
Degraded data redundancy: 1633/ ...
Posted on Sat, 05 Oct 2019 04:43:35 -0400 by villager203
pod Controller Classification:1,ReplicationController2,ReplicaSet3,Deployment4,StatefulSet5,DaemonSet6,Job,Cronjob7,HPApod controller: generally consists of three parts1. Label selector2. Expected number of copies (not required by the DaemonSet controller)3. pod TemplateThe deploy controller is built on the rs controller and new features inclu ...
Posted on Fri, 30 Aug 2019 23:10:28 -0400 by rmmo
Background knowledge and related concepts
The design of StatefulSet is actually very easy to understand. It abstracts the state of application in the real world into two situations:
Topological state. This situation means that multiple instances of an application are not entirely reciprocal. These application instances must be started in some o ...
Posted on Mon, 26 Aug 2019 05:44:35 -0400 by kapishi
Change OSD operation steps
1. Fault Disk Location
2. Remove faulty disks
3. Rebuild raid0
4. Rebuild osd
Control data recovery and backfill speed
First of all, it should be noted that the osd of ceph is not recommended ...
Posted on Mon, 24 Jun 2019 13:00:54 -0400 by chrishawkins
Ceph officials now provide two types of mirrors to create clusters, one is conventional, and each Ceph component is a separate image, such as ceph/daemon, ceph/radosgw, ceph/mon, ceph/osd, etc. The other is the latest way in which all Ceph components are integrated into a single mirror ceph/daemon. If you want to create the correspon ...
Posted on Mon, 03 Jun 2019 22:38:15 -0400 by jbardin
In-depth Analysis of Kubernetes-09 From Container to Container Cloud Talking about the Essence of Kubernetes
1. Install Docker and kubeadm on all nodes;
$ curl -s https://packages.cloud.google.com/apt/doc/apt-key.gpg | apt-key add -
$ cat </etc/apt/sources.list.d/kubernetes.list
deb http://apt.kubernetes.io/ kubernetes-xenial main
$ a ...
Posted on Wed, 29 May 2019 15:18:32 -0400 by herbal_lavender