[app service linux] Are apt-get packages persistent across multiple re-deployments?

Question

If I install any packages via apt-get on app service for linux (by connecting via SSH), will they be persistent across multiple re-deployments? Anyone know?

FWIW: I'm simply zip-deploying my app to a B2 plan. Am not using containers.

https://learn.microsoft.com/en-us/azure/app-service/containers/app-service-linux-ssh-support

Thanks,
-Mithun

Answer 1

Hello Mithunshanbhag,

Yes, the configuration persist. You can try to restart your app service: your package still on your vm.
Deployment doesn't change anything. When you deploy your application, basically, you only:

• send your package
• Erase your old files (if you configure "delete" option)
• Unzip the package
• restart the service

The system doesn't change anything and remain the same.

Answer 2

If i understand correctly,

1. You restart app: your package is available
2. You deploy your app: package not found
   It's pretty weird...
   When you use the package, you know where is installed?
   You can find the package with the command "find / -name package-name"

I see this configuration:
removeAdditionalFilesFlag: true
excludeFilesFromAppDataFlag: true
it's a basic configuration, but if I understand what you say, it's possible the package was "erased" when you deploy your app BECAUSE of this configuration

You can test with:

• Deploy with this configuration to "false"
• if with this value to false, the package still here, you can move / copy the package to another location to not erase this with the next deploy

Another solution: use your script / your CI to execute the command and reinstall the package if needed
For exemple: "apt install XXX --yes"