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