Function App Slot swap is failing with 'http ping' failure

See original GitHub issue

I have several Azure pipelines that was using the below task to perform Slot swamp successfully, but these tasks are suddenly failing, this i noticed yesterday (7th Dec, 22). The swap was working till couple of days before that, i suspect there is some breaking change, or, a bug that is causing the issue. Please suggest solution.

  steps:
  - task: AzureAppServiceManage@0
    displayName: 'Swap Slot'
    inputs:
      azureSubscription: ${{ parameters.serviceConnectionName }}
      Action: 'Swap Slots'
      WebAppName: '$(FunctionAppName)'
      ResourceGroupName: '$(ResourceGroupName)'
      SourceSlot: '$(SlotName)'

Error:

2022-12-07T12:45:26.1272981Z ##[warning]Error: Failed to update deployment history. Conflict (CODE: 409) 2022-12-07T12:45:26.1288473Z ##[error]Error: Failed to swap App Service ‘-func’ slots - ‘Staging’ and ‘production’. Error: ExpectationFailed - Cannot swap site slots for site '-func’ because the ‘Staging’ slot did not respond to http ping. (CODE: 417) 2022-12-07T12:45:26.1358404Z ##[section]Finishing: Swap Slot

Investigative information

Please provide the following:

Timestamp: 2022-12-07T12:45:26.1272981Z
Function App version: v3
Deployment: https://****-func-staging.scm.azurewebsites.net/api/deployments/77431670417116365
Region: northueurope

Thanks.

Issue Analytics

State:
Created 9 months ago
Reactions:7
Comments:35 (3 by maintainers)

Top GitHub Comments

6reactions

fabiocavcommented, Dec 14, 2022

Folks, this issue has been identified and the team is actively deploying a patch to address the problem. We’ll provide updates here, but this should be addressed in a number of regions, so a retry is recommended.

1reaction

slouahchicommented, Jan 18, 2023

With Azure DevOps Build Pipeline, we have the same issue since DockerInstaller@0.214.0. At the Build Pipeline, based on YAML, it is possible to Rollback to working DockerInstaller@0.209.0. But at the Azure DevOps Release Pipeline, based on the Visual Components, the DockerInstaller Task is fixed with Wildcard ‘0.*’ to the latest version, currently DockerInstaller@0.214.0. Our Workaround at the Azure DevOps Release Pipelines is “continue with error” under “Control Section” and an additional Bash Task that sets installed Docker CLI to the PATH Variable.

Bash Task with Inline Code for our Hosted Agent for Docker 20.10.22 (x64) ` export PATH=$PATH:/azp/_work/_tool/docker-stable/20.10.22/x64

chmod 777 /azp/_work/_tool/docker-stable/20.10.22/x64/docker `

Please create an Hotfix for DockerInstaller with an higher Version than 0.214.0, or add Version 0.209.0 to the “Task Version” Field at the Azure DevOps Release Task. Alternative change “Task Version” Field from SelectBox to Input Field so that the default value “0.*” can be overridden by the user.