CODEWITHSUNDEEP
ibm-cloudcloud-foundry
John
John

Reputation: 5364

How can I deploy in Bluemix with no downtime

We have an application running on bluemix, however whenever we deploy the application is stopped, the new version gets compiled/bundled and then started, all this leading to a downtime of at least 60s.

How can we deploy with no downtime?

Upvotes: 0

Views: 214

Answers (3)

Holly Cummins
Holly Cummins

Reputation: 11502

There is a Cloud Foundry plugin for blue-green deployment. As well as the basic behaviour (zero downtime), it supports things like smoke tests. It lives at https://github.com/bluemixgaragelondon/cf-blue-green-deploy.

To use it, get the plugin from the CF Community Repository: 

cf install-plugin blue-green-deploy -r CF-Community

Then deploy the app (the smoke test parameter is optional)

cd your_app_root
cf blue-green-deploy app_name --smoke-test <path to test script>

Upvotes: 0

opiethehokie
opiethehokie

Reputation: 1912

It's often called a blue-green deployment or red-black deployment. The basic idea is to deploy the new version of the app side-by-side with the old one, test that everything is working, then switch traffic over to the new one. The old app is kept as a backup (and it could eventually be stopped so it's not consuming memory or deleted).

Here is a non-Bluemix-specific description of the idea and also the Bluemix documentation for it.

Using the cf CLI it would look something like this:

$ cf push Blue
$ cf push Green
$ cf map-route Green mybluemix.net -n Blue
$ cf unmap-route Blue mybluemix.net -n Blue
$ cf unmap-route Green mybluemix.net -n Green

Upvotes: 2

data_henrik
data_henrik

Reputation: 17176

You can use rolling updates to avoid downtime. Sometimes they can also be found as "blue/green deployments". Basically, you keep the old version running until the newer is up. Then you switch over, either directly or after some time to see whether the new version is really stable. The technique can be combined with load balancing to decide how much traffic to route over.

I would recommend reading one of these:

Upvotes: 1

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