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apache / openwhisk-deploy-kube

The Apache OpenWhisk Kubernetes Deployment repository supports deploying the Apache OpenWhisk system on Kubernetes and OpenShift clusters.
https://openwhisk.apache.org/
Apache License 2.0
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Get whisk.ingress.apiHostName automatically ? #705

Closed pankaj-dahiya-devops closed 2 years ago

pankaj-dahiya-devops commented 2 years ago

Dear team,

I knew there is a small advantage we get by asking the user to provide whisk.ingress.apiHostName at day zero... But this is actually not feasible. Because once user deploys the helm chart by providing whisk.ingress.apiHostName and in future, if machine restarts its IP may be changed. And if that happens then our cluster which will automatically start running after machine restart will fail due to IP mismatch.

So want to know what open whisk team or other guys are handling this situation.

pankaj-dahiya-devops commented 2 years ago

@dgrove-oss Do you have any recommended solution for this!

dgrove-oss commented 2 years ago

The assumption is that there is a stable DNS hostname (or IP address) to use for ingress for the lifetime of the deployment.

pankaj-dahiya-devops commented 2 years ago

But this assumption has a very critical exception of restarting the machine which gave it a different IP address. So how to bypass this situation!

dgrove-oss commented 2 years ago

This needs to be fixed outside of openwhisk. You need to either (a) deploy in an environment with proper DHCP configuration that includes DNS resolution and use the hostname as the whisk.ingress.apiHostName or (b) you need to use a static ip addresses (so the host machine gets the same IP address across reboots).

rabbah commented 2 years ago

Where are you deploying openwhisk @pankaj-dahiya? Typically, as Dave noted, there is a stable domain name and if the IP address changes, one updates the DNS record for the deployment. If you don't have a static IP, how do you communicate the change of IP to the users of your openwhisk cluster?

pankaj-dahiya-devops commented 2 years ago

Hi @rabbah, I am deploying this in an isolated environment, where users will access the app via private IP (that will be static). But there could be a reason, that in future the IT team may consider a change in IP address (another static IP). In that case, all other services will still work fine, but not open whisk, and thus they must have to manually handle this thing! That's why I opened this ticket, which is a kind of feature request.