Change:
// This is O(N), but we expect haystack to be small; // so small that we expect a linear search to be faster <del> func contains(haystack []int, needle int) bool { </del> <ins> func containsNumber(haystack []int, needle int) bool { </ins> for _, v := range haystack { if v == needle { return true

Discussion:
<!-- This form is for bug reports and feature requests ONLY! If you're looking for help check and the . --BUG REPORT /kind bug What happened: I tried to submit a Service Replace () to the kube-apiserver and this results the kube-apiserver container crashing and restarting. PUT localhost:8001/api/v1/namespaces/<namespace/services/<servicenameWhat you expected to happen: I expected the server not to crash and to get validation errors if the request was invalid. How to reproduce it (as minimally and precisely as possible): Create a service, get the resourceVersion and clusterIP from the created resource GET localhost:8001/api/v1/namespaces/<namespace/services/<servicenameSubmit a replace command to PUT localhost:8001/api/v1/namespaces/<namespace/services/<servicenamewith body like If the same request is submitted with the nodePort fields in the ports array then the request succeeds. I get that I may be sending an invalid request without a node port (though shouldn't the merge deal with that?) but it shouldn't take down the API server. Anything else we need to know?: Environment: Kubernetes version (use ): Client Version: version.Info{Major:"1", Minor:"6", GitVersion:"v1.6.3", GitCommit:"", GitTreeState:"clean", BuildDate:"2017-05-10T23:29:08Z", GoVersion:"go1.8.1", Compiler:"gc", Platform:"darwin/amd64"} Server Version: version.Info{Major:"1", Minor:"8", GitVersion:"v1.8.1", GitCommit:"", GitTreeState:"clean", BuildDate:"2017-10-11T23:16:41Z", GoVersion:"go1.8.3", Compiler:"gc", Platform:"linux/amd64"} Cloud provider or hardware configuration: Bare metal cluster OS (e.g. from /etc/os-release): Ubuntu 16.04.3 LTS (Xenial Xerus) Kernel (e.g. ): 4.4.0-98-generic Install tools: Others:
thanks for reporting this! Seems like this is similar to and should be fixed by . can you PTAL that PR to see if it's good to merge?
/sig api-machinery
Duplicate of

Is this a BUG REPORT or FEATURE REQUEST?: /kind bug What happened: Re-applying a NodePort service that has two ports fails and crashes the API server: What you expected to happen: Do not crash, service is configured correctly. How to reproduce it (as minimally and precisely as possible): Anything else we need to know?: Environment: Kubernetes version (use ):Cloud provider or hardware configuration: on VBox provider in macOS OS (e.g. from /etc/os-release): macOS/Minikube Kernel (e.g. ): Install tools: Others:
Seems that in func updateNodePorts, it ignored protocol when Detecting duplicate nodeport, I would have a fix on it :)
/sig network
FYI: I think this would be fixed in
/cc Maybe this is the time to have another review on and merge it :)
/assign
Fine, That makes sense

<!-- This form is for bug reports and feature requests ONLY! If you're looking for help check and the . --Is this a BUG REPORT or FEATURE REQUEST?: /kind bug /sig network /cc /assign What happened: a ClusterIP type service the service. Change it's type to NodePort and add a Port. Note: the new port has same port number but protocol with the existing Port. the updated service. The TCP Port was eaten. What you expected to happen: The updated service has both TCP and UDP ports. How to reproduce it (as minimally and precisely as possible): See the step above. Anything else we need to know?: If I create a NodePort service with the above two ports, it works. I write a test case to verify this case. I got a panic. The root cause is as below. We should take another look at this logic. BTW: changed some related code but it doesn't change the logic here. So I believe this bug is not introduced by . I also tested this on v1.5.1, it has the same issue. Environment: Kubernetes version (use ): HEAD Cloud provider or hardware configuration**: OS (e.g. from /etc/os-release): Kernel (e.g. ): Install tools: Others:
I will be OOO the next week. Since this bug is not so urgent, I will fix it ASAP when I'm back. Folks who are interested in this can take it :) BTW, I can join in the discussion from my phone.
I'm not sure this is a bug. In the first configuration yaml, you're defining the ports array twice. I'm the second, you're only defining it once. The ports array should only be defined once.
Did you mean the below yaml by ? Please note that the two ports have same port number but different protocols. This is allowed.
Yes, that's the one I meant. But note you have "ports:" twice.
Ah, thanks for pointing it out! This might be the cause. But I remembered I also tested the case without the second line, it had the same issue. I can't verify this now. Will test it when I'm back to my keyboard.
I try the case without the second line, the issue also exists.

So I believe there is a bug here. Seems like there might be two issues here: a port is lost as is described in this issue. we shouldn't allow to configure two lines in the manifest. i.e. we should add validation for this case.
/remove-priority awaiting-more-evidence
can you please provide (or edit) example YAMLs then to allow for attempts at duplication?
Update: reproducing without the extra line. a ClusterIP type service the service (). Change it's type to NodePort and add a Port which has the same port number but different protocol with the existing Port. the updated service. We can see that the UDP Port was not created. I have dug into the code and will send a patch to fix it.
PR sent. Reviews welcome! Thanks!
There are/were bugs in the patch implementation wrt ports, because they need compound merge keys.
Yeah I had some discussios with in . But we also do have a bug in our service updating codes. See: