openstack ceph

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

10. OpenStack Object Storage Service (SWIFT) configuration: I added two hard drives (SDB,SDC) to the compute node for storage, and the compute node in my build is the storage node, because the computer can't pull more virtual ... Brief introduction: There are four main components of Swift: Swift-proxy-server, Swift-account-server, Swift-container-server, Swift-object-server Swift-proxy-server (Proxy service): Externally provided object service API

OpenStack is an excellent cloud operating system, and it is wise for developers, administrators, and operators to have the skills associated with them in their virtual toolkit. Efficient cloud requires an efficient database and can accept multiple databases. But what if you want IBM? DB2 for OpenStack, what should I do? OpenStack does not support DB2 by default.

IntroductionI need direct programmatic access to Ceph's object storage to see the performance difference between using gateways and without gateways. Examples of access based on Gate-way have gone through. Now the test is not to go to the gateway, with Librados directly with the Ceph cluster.Environment configuration1. Ceph cluster: You have a ceph cluster that i

If you need to add a host name: OSD4 ip:192.168.0.110 OSD1. Create a directory for Mount directories and placement profiles in OSD4SSH 192.168.0.110 (this is from Mon host ssh to OSD4 host)Mkdir/ceph/osd.4Mkdir/etc/ceph2. On OSD4, format the EXT4 Sda3 partition, mount the partition.Mkfs.ext4/dev/sda3Mount-o User_xattr/dev/sda3/ceph/osd.43. The id_dsa.pub of the Mon host is copied to the OSD4 host for passwo

[Analysis] Ceph programming instance interface Librbd (C ++) -- image creation and data read/write, cephlibrbd Currently, we have two ways to use Ceph Block Storage :?-Use QEMU/KVM to interact with Ceph Block devices through librbd. This mainly provides block storage devices for virtual machines, as shown in ;? -Use the kernel module to interact with the Host

1. Introduction to the basic Environment Ubuntu12.04.5 OpenSSH all require the default installation source nodeceph0.80.4 ceph-admin Management and Client node,ceph01,ceph02,ceph03 cluster node, network gigabit:192.168.100.11 cluster node hard disk needs 3 of them. The above is the basic configuration2. Deploy the 3 -node ceph environment with ice installation calamari-server,

The entire life cycle of instance from creation to deletion is managed by Nova. In the following sections, we take the different operational scenarios in the instance life cycle as an example to analyze in detail how the different Nova components work together and deepen your understanding of Nova through log analysis.Before we study Nova's operations, let's start by learning one important thing: the OpenStack logs.OpenStack's log records very detaile

Well, we've already installed fuel master, and now we're ready to install OpenStack, so you can see the OpenStack main interface when the installation is complete.Continue yesterday, we went into the fuel UI and then "new OpenStack Environment" to create the OpenStack deployment environment.650) this.width=650; "src="

1. Description of the problem after doing the iptables strategy today and restarting one of the machines in the cluster, the input ceph-s discovers the following conditions: [[email protected] ~]# ceph-s2015-09-10 13:50:57.688516 7f6a6b8cc700 0 monclient (Hunting): Authenticate timed out AF ter 3002015-09-10 13:50:57.688553 7f6a6b8cc700 0 librados:client.admin authentication error (+) Connection timed O U

RBD is a block device provided by Ceph, this article will briefly introduce its implementation principle. Ceph official documentation tells us that Ceph is essentially an object store. It is also understood that ceph block storage is actually handled by several objects at the client. In other words, for

, 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

= = Keystone Service = =OpenStack-keystone: inactiveAs shown above: If you start httpd, you will not be able to start the Openstack-keystone service very well, as you can see in the official documentation: the 35357 . By default, the Keystone service still listens on ports35357. Therefore, this guide disables the Keystone Service.This means that the httpd and

Mirantis, one of the benchmark companies in the OpenStack field, released the latest MOS 8.0 version in early March 2016. This paper tries to make some inductive analysis based on the public data.1. Version Overview 1.1 overview Community version: Liberty, the default integrated components include ceilometer,Cinder,Glance,Heat,Horizon, Ironic (first support),Keystone,Murano (an application catalog, first-time support),Neutron (using Open vSwitch

The entire life cycle of instance from creation to deletion is managed by Nova.In the following sections, we take the different operational scenarios in the instance life cycle as an example to analyze in detail how the different Nova components work together and deepen your understanding of Nova through log analysis.Before we study Nova's operations, let's start by learning one important thing: the OpenStack logs.OpenStack's log records very detailed

650) this.width=650; "Title=" http://7xo6kd.com1.z0.glb.clouddn.com/ Upload-ueditor-image-20160503-1462278374898013082.png "src=" http://7xo6kd.com1.z0.glb.clouddn.com/ Upload-ueditor-image-20160503-1462278429940030293.jpg "style=" border:0px;float:none; "/>The entire life cycle of instance from creation to deletion is managed by Nova. In the following sections, we take the different operational scenarios in the instance life cycle as an example to analyze in detail how the different Nova compon

Reply content: 1, language advice: Learn python. OpenStack is a pure Python project, so you have to be familiar with the syntax, debugging, and invocation of Python. Like what: PDB: Base use, breakpoint, call stack LOG: Call stack printing, function import parameter printing, bottom command printing Python open source frameworks, components: such as SQLAlchemy, Django Object-oriented: Clear abstraction, inheritance, polymorphism, comp

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