Possible to edit web.config of cloud app deployed on windows Azure without redeploying app?

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votes

I would like to add rewrite URL code on azure web app's web.config without redeploying the whole app again. for this I am using 'app service editor' and 'kudu- debug console' for editing the web.config, first I cant save the file and gives me error. enter image description here

after some search I found that under APP SETTING KEY value should be 0 instead 1

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edited the value 1 to 0 and save the APP SETTING KEY, after that I am able to edited the config file, in order to test the code again I changed the value 0 to 1 and save the setting. but when I refresh the file which is opened in editor or kudu the pasted code disappeared, the site is connected with automatic azure deployment pipeline

How I can edited the web.config file without redeploying the app again.
1
azureazure-devopsweb-configazure-web-app-service
Would you consider using other deploy method like web deploy, zip deploy instead of run from package? It's possible to do what you want, but the workaround is a bit complex. So I think a redeployment would be better if you don't have specific reason to avoid redeploying... (PS: I'll post my detailed workaround later for you) – LoLance
Details workaround updated, feel free to let me know if you meet any issue when trying my workaround. PS: 1. My workaround doesn't require any changes to the wwwroot, so we don't need to change the value of xxx to 0 to make wwwroot editable. 2.After all changes, you may need to restart the app service. (Not necessary, but recommended~) – LoLance
Yes exactly workaround is bit strange and complex, so I would go the option-- deployment method 'WebDeploy' instead Zip Package in azure release pipeline task – Saad Awan

1 Answers

1
votes

Yes, it's possible to make changes without redeploying the app.

Some details:

Check Run the package document and we can find:

1.The zip package won't be extracted to D:\home\site\wwwroot, instead it will be uploaded directly to D:\home\data\SitePackages.

2.A packagename.txt which contains the name of the ZIP package to load at runtime will be created in the same directory.

3.App Service mounts the uploaded package as the read-only wwwroot directory and runs the app directly from that mounted directory. (That's why we can't edit the read-only wwwroot directory directly)

So my workaround is:

1.Navigate to D:\home\data\SitePackages in via kudu- debug console:

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Download the zip(In my case it's 20200929072235.zip) which represents your deployed app, extract this zip file and do some changes to web.config file.

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2.Zip those files(choose those files and right-click...) into a childtest.zip, please follow my steps carefully here!!! The folder structure of Run-from-package is a bit strange!!!

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3.Then zip the childtest.zip into parenttest.zip(When uploading the xx.zip, the kudu always automatically extra them. So we have to zip the childtest.zip into parenttest.zip first)

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4.Drag and drop local parenttest.zip into online SitePackages folder in kudu-debug console and we can get a childtest.zip now:

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5.Modify the packagename.txt, change the content from 20200929072235.zip to childtest.zip and Save:

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Done~

Check and test:

Now let's open App Service Editor to check the changes:

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In addition: Though it answers the original question, I recommend using other deployment methods(web deploy...) as a workaround. It could be much easier~