If you’re using Azure to host your web applications, you might have heard about deployment slots. Deployment slots are a great feature that allows you to deploy different versions of your application to different environments.
For example, you can have a staging slot where you test your application before deploying it to production. In this tutorial, we’ll show you how to change deployment slots in Azure.
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But first, let’s quickly go over what deployment slots are and how they work. Deployment slots are basically separate instances of your application that live alongside each other on the same Azure App Service instance. Each slot has its own URL and can be independently deployed from the others.
To create a new deployment slot, go to your App Service in the Azure portal and click on “Deployment Slots” in the left-hand menu. Then click on “Add Slot” at the top of the page. Give your new slot a name and select whether you want it to clone from an existing slot or start with an empty one.
Now that we’ve covered the basics of deployment slots, let’s talk about how to change them. There are a few different ways you can do this depending on what exactly you want to accomplish.
1. Swap Slots
The first method is called swapping slots. This involves swapping the contents of two deployment slots so that one becomes the other and vice versa. This can be useful if you want to promote a staging version of your application to production or roll back a production release.
To swap deployment slots, go back to the “Deployment Slots” page for your App Service and select the source slot (the one you want to swap out). Then click on “Swap” at the top of the page and select the Target slot (the one you want to swap in). You’ll be prompted with some options for how to handle things like DNS changes and app settings during the swap process.
2. Change Active Slot
The second method is simply changing the active slot. This means making one of your deployment slots the “live” version of your application that users will see when they navigate to your URL.
To do this, go to your App Service and click on “Deployment Center” in the left-hand menu. Then click on “Settings” at the top of the page and select “General Settings”. You’ll see a dropdown labeled “Deployment Slot” where you can select which slot you want to be active.
3. Deploy to Specific Slot
The third method is deploying directly to a specific deployment slot. This can be useful if you want to test a specific feature or change in isolation before promoting it to production.
To deploy directly to a specific deployment slot, go back to the “Deployment Slots” page for your App Service and select the slot you want to deploy to. Then click on “Deployment Center” in the left-hand menu and choose your preferred deployment method (e.g.
GitHub, FTP, etc.). Follow the prompts to deploy your application code.
In conclusion, changing deployment slots in Azure is a powerful tool that can help you manage different versions of your application more effectively. Whether you want to swap slots, change the active one, or deploy directly to a specific one, Azure makes it easy for you to do so. With these tips in mind, you’ll be able to streamline your development process and keep your users happy with up-to-date and bug-free applications!
