github/kubernetes
1
0
Fork 0
mirror of https://github.com/k3s-io/kubernetes.git synced 2025-07-23 11:50:44 +00:00
Code Issues Projects Releases Wiki Activity

Merge pull request #53749 from dims/relax-cluster-cidr-validation

Browse Source 
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
```
This commit is contained in:
Kubernetes Submit Queue 2017-10-12 16:40:28 -07:00 committed by GitHub
commit 23599da487
1 changed files with 4 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
cmd/kube-proxy/app/validation.go
View File

@ -58,8 +58,10 @@ func Validate(config *componentconfig.KubeProxyConfiguration) field.ErrorList {
allErrs = append(allErrs, validateHostPort(config.HealthzBindAddress, newPath.Child("HealthzBindAddress"))...)
allErrs = append(allErrs, validateHostPort(config.MetricsBindAddress, newPath.Child("MetricsBindAddress"))...)
if _, _, err := net.ParseCIDR(config.ClusterCIDR); err != nil {
allErrs = append(allErrs, field.Invalid(newPath.Child("ClusterCIDR"), config.ClusterCIDR, "must be a valid CIDR block (e.g. 10.100.0.0/16)"))
if config.ClusterCIDR != "" {
if _, _, err := net.ParseCIDR(config.ClusterCIDR); err != nil {
allErrs = append(allErrs, field.Invalid(newPath.Child("ClusterCIDR"), config.ClusterCIDR, "must be a valid CIDR block (e.g. 10.100.0.0/16)"))
}
}
if _, err := utilnet.ParsePortRange(config.PortRange); err != nil {