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kubernetes/cmd
Kubernetes Submit Queue 23599da487 Merge pull request #53749 from dims/relax-cluster-cidr-validation
Automatic merge from submit-queue. If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

Parse cluster-cidr only if it is specified

xref https://github.com/kubernetes/kubernetes/issues/53570#issuecomment-335943956



**What this PR does / why we need it**:

In iptables/proxier.go, there is code to check the length of the
CIDR and setup nat/iptables only if the length of the string is
greater than zero. However in PR #49087, strong validation was
added so kube proxy currently bails out and basically mandates
a valid cidr has to be specified. Let us go back to the earlier
behavior.

**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes #

**Special notes for your reviewer**:

**Release note**:

```release-note
NONE
```
2017-10-12 16:40:28 -07:00
..
2017-10-12 13:08:42 -04:00
2017-08-18 21:01:19 -07:00