问题
As part of QA pipeline(in Jenkins), goal is to automate provisioning and configuration of a VM to run the QA tests.
Jenkins pipeline can trigger Terraform code to automate provisioning of VM and ansible code for configuration of a VM, but, issues like rollback, error handling is not easy unless we use some vendor specific template like AzureResourceManager template.
So, with Jenkins pipeline,What should be the best approach to provision and configure a VM in Azure cloud? we write pipeline scripts for jenkins pipeline...
回答1:
As the goal is to know the best approach to automate provisioning and configuration of a VM to run the QA tests so I would go with simple jenkins pipeline script by leveraging Azure CLI commands in it. To be precise, I would just add an Azure service principal to Jenkins credential. And then write simple Jenkins pipeline script by having 'withCredentials([azureServicePrincipal('SERVICEPRINCIPALCREDENTIALID')])' and then by using 'sh' part to have Azure CLI command to provision and configure VM. For illustration related to this you may refer https://docs.microsoft.com/en-us/azure/jenkins/execute-cli-jenkins-pipeline#add-azure-service-principal-to-jenkins-credential.
Regarding the issues like rollback and error handling when going with the approach of having Jenkins pipeline that triggers Ansible code (with or without using ARM templates) that can automate provisioning and configuration of a VM to run the QA tests, (you might already be aware of this but wanted to let you know that) for certain types of tasks you may write custom modules that can leverage the error handling functionality and in few scenarios you may leverage 'failed_when' option. Also you may leverage 'blocks' functionality by which you can define a set of tasks to be executed in the rescue: section. This 'blocks' functionality specially should help in enabling us to get the things rolled back.
Hope this helps!! :)
来源：https://stackoverflow.com/questions/54463106/azure-provisioning-with-jenkins