But what about blue-green-deployment, where I map the application to a route on which there is already a running application. This could of course mean that the instance is small enough that all router operation are handled faster than our script is able to react. And if we get ahow do we know whether we need to wait for 5 minutes, or the mapping just failed entirely and there's no point in waiting any longer at all. So agree, just polling the route until the app returns a is not the way to go also see below. We will update them. Currently Cloud Controller has no way of knowing whether a route is ever registered with a router, whether the app is on DEAs or Diego. I'm not aware what would happen if only some percentage of the routers had the routing tables updated; if that means that a few requests would reach the new version, giving one the impression that the mapping was successful and one could disconnect the old app, then this would be an issue. First of all, to avoid misunderstandings, it'd be totally fine if we had an asynchronous mechanism. Yes, or check that the new version of your app is responding before unmapping the old version from the route. Considering the routing tier is horizontally scalable, what would your success criteria be for "a route is mapped to an app"?
disk_quota, The maximum amount of disk available to an instance of an app. command, The command to start an app after it is staged (e.g.
'rails s -p $PORT'. Oct 26, Run cf push APP-NAME command to push your app, where APP-NAME is the name you want to give your app.
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. dotnet-core: sdk: Mar 5, request: Get : Service Unavailable # - started-with-pivotal-cloud-foundry-dev/deploy-the-sample-app.
For quite some time we have discussed offering automated cutover between versions of an app as a built-in feature, so app developers wouldn't have to use these blue-green scripts.
In our internal discussion with our CF operators, we found a couple of parts of documentation which at least hint to different, maybe even inconsistent inner workings of the route mapping: I'll submit a PR to update the docs now. We never experienced this issue on instance A. We are aware that there is more CF could do with regard to upgrading apps without downtime.
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|If route-mapping is indeed an asynchronous task, in my opinion the description on https: On Fri, Feb 3, at 1: Other than polling the application, CF does not expose a guaranteed way to discover that the route has been registered with the routers themselves.
So how do we know when we can disconnect the old version? Free forum by Nabble.
Sep 11, Deploy a Spring Application; Manage Your App with the cf CLI; Troubleshooting. Page last.
You should receive a Created response. Spring; Node; Go.
Ruby. $ cf login -a $ git clone Scale your application and have hundreds of instances in seconds. Instances 1 4 6 8.
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Asynchronous route-mapping and blue-green deployment Hello Jens, I understand your concern. But what about blue-green-deployment, where I map the application to a route on which there is already a running application. In reply to this post by Shannon Coen.
But not sure if I got you wrong.
CF Dev [cfdev] Asynchronous routemapping and bluegreen deployment
It also does not return an event or operation which could be pinged to wait for completion of route mapping. So, is the route mapping really supposed to be asynchronous?
Cf app 201
|Hello everyone, we already had an internal discussion on the topic and since we could not quite come to a solution, I'd like to ask in this list.
I'm not sure which changes to the router would be possible and which won't - but I assume if it is possible to tell the router "please map X", it should be possible to add a feature, with which one could ask the router "what's the status of the mapping operation of X"?
Best regards Jens From: Hello Jens, I understand your concern. Applications running on the DEA architecture must be restarted after routes for an app are mapped or unmapped.