avoid the operation failed again.Retryfilter is usually used as the first filter.AvailabilityzonefilterTo improve disaster tolerance and provide isolation services, compute nodes can be partitioned into different availability zones.For example, a machine in a rack is divided into a availability Zone.OpenStack defaults to a availability Zone named "Nova", where all compute nodes are initially placed in "Nova
Nova is a compute service that can start a virtual machine instance. These services can be configured on a separate node or on the same node. Most services run on the controller node and run the virtual machine service on a dedicated compute node. This time, we deploy the compute to the control node.4.1 Install Compute Controller services (Installation Compute service)4.1.1 installation of compute required Packages# yum Install
the above rules is allowed-A nova-filter-top-j nova-compute-local2. FWaas2.1 ConceptStarting with the Havana version, Neutron provides a network four-layer firewall virtualization reference implementation Firewall-as-a-service, referred to as FWaas, based on the Neutron L3 Agent. The analysis in this paper is based on the OpenStack Juno version. In the Juno vers
In general, OpenStack requires at least two physical machines, or two nodes, the control nodes and compute nodes mentioned earlier. In general, the control node does not require excessive hardware resources, compute nodes need a relatively high hardware resources, but often the user's two nodes of the hardware information is the same, so we will also install Nova on the control node, to use the Control node
Openstack Nova secondary development-Nova-extended service
This article mainly describes how to start openstack Nova-extend services. This service is used for secondary extension and development of some requirements of openstack,
--regionregionone computeinternalhttp://controller:8774/v2.1/%\ (tenant_id\) s[[emailprotected] ~]#openstackendpointcreate--regionRegionOnecompute Adminhttp://controller:8774/v2.1/%\ (tenant_id\) s Third, the installation of Nova services[email protected] ~]# Yum install Openstack-nova-api openstack-
" Compute
Step 7: International practice, create three API URLs for Nova services, these three URLs are only different types
OpenStack Endpoint Create--region regionone \compute public http://controller:8774/v2.1/%\ (tenant_id\) s
OpenStack Endpoint Create--region regionone \compute internal http://controller:8774/v2.1/%\ (tenant_id\) s
(Nova-network)Volume Worker (Nova-volume)Scheduler (Nova-scheduler)
API Server (NOVA-API)
API server provides an interface to interact with the cloud infrastructure and is the only component externally available to manage the i
Here I only use the KXCOMPUTE1 node configuration as an example, the configuration of the other nodes is basically the same, except that the declared management IP is different.COMPUTE Nodes# Yum install openstack-nova-compute sysfsutils Modifying a configuration filevi/etc/nova/nova.conf[DEFAULT]Vcpu_pin_set = 4-31resume_guests_state_on_host_boot=truerpc_backend
-controller is both a control node, a compute node, and a virtual machine running on it.This also shows us the flexibility of the distributed architecture deployment of OpenStack: All services can be placed on a single physical machine as a all-in-one test environment, and services can be deployed on multiple physical machines for better performance and high availability.Alternatively, you can use Nova serv
-1461203186865091358.png "src=" http://7xo6kd.com1.z0.glb.clouddn.com/ Upload-ueditor-image-20160421-1461203230258079700.jpg "style=" border:0px;white-space:normal;float:none; "/>
The customer (which can be an OpenStack end-user or other program) sends a request to the API (NOVA-API): "Create a virtual machine for me"
After the API has made some necessary processing of the request, a message is sent t
Tags: parameter search tool Show pack LTE Pat Traceback []By Curl-s-H "X-auth-token: $OS _token" Http://192.168.153.128:8774/v2.1/servers/detail | Python-m json.tool command; Get results: {"Servers": [] Note: Because servers is a core resource, all returns are empty.} 1/opt/stack/nova/nova/api/openstack/compute/servers.py (detail) () Pdb.set_trace () 11/opt/stack
Openstack compute (NOVA) Function Analysis
Openstack compute provides a cloud tool for an organization. Its functions include running Virtual Machine instances,Manage networks and control cloud access through users and projects. The most basic open-source project of openstack is named
four, when all the host's resources are used too much, that is, when the qualified over-provisioning value is exceeded (Total_resource * allocation_ratio), the Nova-scheduler will filter the host, and when no host is found that meets the requirements, The virtual machine will fail to create.The API for creating a virtual machine supports specifying host to create a virtual machine, and when you specify hos
Openstack-nova-compute[Email protected] ~]# systemctl start LIBVIRTD openstack-nova-computeView Validation Viewing on the control node[[email protected] ~]# OpenStack host list+------------+-------------+----------+| Host Name | Service | Zone |+------------+-------------+-
The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion;
products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the
content of the page makes you feel confusing, please write us an email, we will handle the problem
within 5 days after receiving your email.
If you find any instances of plagiarism from the community, please send an email to:
info-contact@alibabacloud.com
and provide relevant evidence. A staff member will contact you within 5 working days.