openstack common commands - nova

       1. View openstack version nova-manage version 2. View nodes nova host-list 3. View calculation nodes nova hypervisor-list 4. View the virtual machines on the computing node nova hypervisor-servers compute1 5. View the list of virtual machines nova list 6. View the image list nova image-list 7. View volume list nova volume-list 8. View ...

Posted by xdracox on Sun, 08 Dec 2019 03:03:44 -0800

Advanced chapter: dockersurm of docker adjusts micro service and service configuration (29)

>Original article, welcome to reprint. Reprint please indicate: reprint from IT people's story meeting Thank you!>Original link address: Advanced chapter: dockersurm of docker adjusts micro service and service configuration (29) Last time, the swarm cluster environment has been set up. There are three virtual machines, server01, server0 ...

Posted by aclees86 on Sat, 07 Dec 2019 18:12:34 -0800

The first micro service application (Eureka) released by docker under centos7

1. Package under windows Microservice applications are packaged by maven, mvn clean package is executed in pom.xml of the project, or Maven package is directly packaged by idea or eclipse The above operation will generate the file microservice-discovery-eureka-0.0.1-SNAPSHOT.jar package in the target directory of the project 2. Copy microservic ...

Posted by ik on Fri, 06 Dec 2019 11:26:21 -0800

Introduction guide to spring cloud boot RocketMQ

MAVEN Configuration Producer Configuration application.yml Configuration application.properties configuration Define Output Binding Turn on Binding (turn on MQ) send message Consumer Configuration application.yml Configuration Define Input Binding Turn on Binding (turn on MQ) Accept message   ...

Posted by will83 on Fri, 06 Dec 2019 00:08:23 -0800

Function calculation, automatic operation and maintenance practice 3 -- event triggering, automatic snapshot creation

Function calculation Ali cloud Function calculation Is an event driven fully hosted computing service. Through function calculation, you don't need to manage infrastructure such as servers, just write code and upload it. Function calculation will prepare computing resources for you, run your code in a flexible and reliable way, and provide log ...

Posted by pirri on Thu, 05 Dec 2019 05:17:53 -0800

spring boot learning: command line startup

When using spring boot to build application startup, we start the application through the command line in our work. Sometimes we need some specific parameters to do some initialization operations when the application starts. spring boot provides two interfaces for users: CommandLineRunner and ApplicationRunner. 1. CommandLineRunner 1.1 stateme ...

Posted by rivasivan on Wed, 04 Dec 2019 15:59:04 -0800

LR11 series - script recording

1. Open LR11 in the virtual machine and click the "Create/Edit Scripts" button 2. Select the web(HTTP/HTML) mode to record 3. Enter the recording interface. The first thing to fill in here is the URL Addres, which is the URL of our target website. There is also a path for script saving, which can be defined by y ...

Posted by Xu Wei Jie on Sat, 30 Nov 2019 17:08:12 -0800

spring initializes beans in different order: SpringUtils.getBean(SpringUtils.java:50) null null null pointer exception,

spring initializes bean s in different environments in different order. For the same code, there is no error in the local startup, and there was no error in the test environment before, but now there is an error in the test environment Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' e ...

Posted by robinjohn on Mon, 25 Nov 2019 13:22:50 -0800

Handwritten MQ framework - server implementation

First, set sail Based on the principle of from nothing to have, from having to being excellent, we plan to realize the function through web first, and then optimize it to socket. 1. Technology selection The web framework uses the gmvc framework written before( Handwritten MVC framework (I) - start again )Message storage adopts the way of existi ...

Posted by seddonym on Sun, 24 Nov 2019 01:46:44 -0800

Centos deploy KVM virtualization platform (can follow)

I. KVM overview KVM is the abbreviation of Kernel Virtual Machine. At present, Linux distribution must run KVM in 64 bit system environment, and the hardware needs to support VT technology. 1. Case pre knowledge points KVM has been directly integrated into Linux kernel since Linux version 2.6.20. It relies on CPU virtualization instruction set ...

Posted by futurewii on Thu, 21 Nov 2019 22:38:20 -0800