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vitals and other tools. The Google play team will also reserve 20 minutes for online questioning, and welcome to join our program and participate in the discussion. Course Time and content Time: November 17, 2017 (today) afternoon 3:00-4:00 Content: Use Android vitals and other tools to report on improving application quality Enter the course mode This event we provide a new live platform Zoom for eve

=us. Role; Db. SaveChanges (); } returnuser; } }} 1.4 Calls In the console program test:usingBlogASPNET5.Repository.Implements;usingBlogASPNET5.Repository.Interfaces;usingSystem;namespaceblogaspnet5.consoleapp{ Public classProgram { Public voidMain (string[] args) { //interfaces refer to specific instances and are clearly not decoupled//the ASP. NET 5 has built-in Di, very convenient to

, Gender=Gender.woman, Role= db. Roles.single (r = R.name = ="member") }); Db. SaveChanges (); } } }} 1.3 Calls In the console program call:Using blogaspnet5.repository.contexts;using blogaspnet5.repository.migrations;using System;namespace blogaspnet5.consoleapp{Public Class program {public void Main (string[] args) { //Initialize data, Create the comment out sampledata.setdata (); Co

Today's discussion cinder how to delete volume.A volume with a status of Available can be deleted. If volume is currently attach to instance, it needs to be detach before delete.The delete operation is relatively simple and the flowchart is as follows: Send Delete request to Cinder-api Cinder-api sending messages Cinder-volume performing a delete operation Let's discuss each step in detail below.Send Delete request to Cinder-apiThe customer (which can be an OpenStack end us

-image-20160707-1467841226540090315.jpg "style=" border:0px;float:none; "/>What's interesting here is thatCinder-volume performs a "safe" removal . The so-called "security" is actually erasing the data in volume, and LVM driver uses the DD operation to zero the LV's data. The logs are as follows:650) this.width=650; "Title=" http://7xo6kd.com1.z0.glb.clouddn.com/ Upload-ueditor-image-20160707-1467841051639046049.png "src=" http://7xo6kd.com1.z0.glb.clouddn.com/ Upload-ueditor-image-20160707-1467

/ Kubernetes-dashboard.yamlDashboard will be in kube-system Create your own Deployment and Service in namespace. because the Service isClusterIPtype, for ease of use, we cankubectl --namespace=kube-system edit service kubernetes-dashboardmodified intoNodePorttype. Save the changes and the Service has been assigned a port 31614 at this time . Access Dashboard https://192.168.56.105:31614/ through the browser , the login interface is as follows:Configure logon PermissionsDashboard SupportKubeconfi

/ Upload-ueditor-image-20160908-1473292244613010407.png "src=" http://7xo6kd.com1.z0.glb.clouddn.com/ Upload-ueditor-image-20160908-1473292592203008125.jpg "style=" border:0px;white-space:normal;float:none; "/>View the network structure of the control node, add the second_local_net corresponding bridge brq161e0b25-58, and the DHCP tap device tapae547b6b-2a.650) this.width=650; "Title=" http://7xo6kd.com1.z0.glb.clouddn.com/ Upload-ueditor-image-20160908-1473292244943001631.png "src=" http://7xo6

-1472912641925010744.jpg "style=" border:0px;white-space:normal;float:none; "/>In addition, VIF's MAC address is fa:16:3e:c1:66:a5, and this data is taken from Port "(fa7e090e-a29c)".Ifconfig is performed in Cirros-vm1, and the MAC address confirms that eth0 corresponds to TAPFA7E090E-A2.650) this.width=650; "Title=" http://7xo6kd.com1.z0.glb.clouddn.com/ Upload-ueditor-image-20160903-1472912048425081895.png "src=" http://7xo6kd.com1.z0.glb.clouddn.com/ Upload-ueditor-image-20160903-147291264203

TAPFA7E090E-A2 the name tapfa7e090e-a2 corresponds to Port "(fa7e090e-a29c)".The virtual machine instance-00000001 shown in the Virsh list is "Cirros-vm1" and is named differently and should be noted. Check CIRROS-VM1 configuration with Virsh Edit command to confirm that VIF is TAPFA7E090E-A2In addition, VIF's MAC address is fa:16:3e:c1:66:a5, and this data is taken from Port "(fa7e090e-a29c)".Ifconfig is performed in Cirros-vm1, and the MAC address confirms that eth0 corresponds to TAPFA7E090E

network with label "Default", node A may use Eth1, which is configured as: Physical_interface_mappings = Default:eth1 Node B may use Eth2, which is configured as: Physical_interface_mappings = Default:eth2 supports multiple flatIf you are creating multiple flat networks, you need to define multiple labels, separate them with commas, and, of course, use multiple physical network cards, as shown here: [Ml2_type_flat] Flat_networks = Flat1,flat2 [Linux_

interface qg-b8b32a88-03 of the router connection, a source NAT is made, and the packet's origin address is modified to router's interface address 10.10.10.2, so that the destination can send the reply packet back to router , and then forward back to the source-side instance.You can view SNAT's rules through the iptables command.When CIRROS-VM3 (172.16.101.3) pings 10.10.10.1, it is possible to verify router behavior by observing interface two SNAT ICMP packets by tcpdump respectively.vlan101 i

floating IP 10.10.10.3 and the external network communication.vlan101 interface qr-e17162c5-00 tcpdump output:When the data is forwarded to the Tenant network, the address has become CIRROS-VM3 tenant IP 172.16.101.3.Summary:1. Floating IP allows the extranet to directly access the instance in the tenant network. This is achieved by applying the iptalbes NAT rule on the router.2. Floating IP is configured on the router extranet interface rather than

ML2 plugin, a variety of network provider without the development of their own plugin, only the ML2 to develop the corresponding driver can be, the workload and difficulty are greatly reduced. ML2 will be discussed in detail later. Plugin is divided into two categories: core plugin and service plugin. Core plugin maintains Neutron netowrk, subnet and port related resources, and the agent for core plugin includes Linux bridge, OVS, etc.; Service plugin provides Routing, firewall, load balance

scheduling algorithm and selects node A from several compute nodes Scheduler sent a message to Messaging: "Create this virtual machine on compute node A" The Compute (nova-compute) of compute node A obtains the message Scheduler sent to it from Messaging, and then starts the virtual machine on the Hypervisor of this node. In the process of virtual machine creation, Compute sends a message to conductor (nova-conductor) via Messaging If the database information needs to be queried or update

http://acm.hdu.edu.cn/showproblem.php?pid=3567Compared to eight, it seems that the target State has been changed from certain to indeterminate, but Cantor expansion + Manhattan for H value of a * and ida* are not, but also difficult to control the dictionary orderIn other words, although there are many starting states, but which one is 1, which one is 2 is not the most important, the most important is the corresponding to the target State, so you can

important aspect is the adoption of a Driver-based framework.In Cinder, for example, storage nodes support a variety of volume provider, including LVM, NFS, Ceph, GlusterFS, and commercial storage systems such as EMC and IBM. Cinder-volume defines a unified driver interface for these volume provider, and volume provider can plug and play into OpenStack in the form of driver simply by implementing these interfaces. The following is the architecture of

does not affect other sub-services, which means that the change is transparent to others. In the following sections, we can see the application of Messaging.DatabaseOpenStack components need to maintain their own state information.For example, Nova has a virtual machine in the specification, state, and this information is maintained in the database.Each OpenStack component has its own database in MySQL.SummaryNova is the most important component in OpenStack and is also a typical component

NetworkTo be able to communicate with each other, the POD network must be deployed Kubernetes Cluster, and flannel is one of the options available.The complete ArchitectureFigureIn combination with the experimental environment, we get the following architecture diagram:You may ask: why are there kubelet and Kube-proxy on K8s-master?This is because the app can also be run on master, that is, Master is also a Node.Almost all of the Kubernetes components themselves run in pods, executing the follo

Label:Operation MySQL1. Connect MySQL Mysql-u Root 2. Set the password for the root user " www.1.com " 3. After setting the password for the user, connect MySQL Mysql-u root-p 4. mysql connecting to other servers Mysql-u root-p-H IP Address 5. View the database show databases; 6. Switch database Use database name; 7. View Data Sheet Show tables; 8. View the stru

In the PSI crowdsourcing compensation scheme, you can choose the equity option. Let's talk about my understanding of the scheme.1, the choice of stock options, the workload will not be immediately paid in cash, but wait until after financing through the exit mechanism to achieve arbitrage.2, the workload reached 100 hours (equivalent compensation is 10,000 yuan), to obtain 1% of the equity. The average participant is capped by a 1% stake. The core par