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pkg/proxy: only set sysctl if not already set

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This will allow for kube-proxy to be run without `privileged` and
with only adding the capability `NET_ADMIN`.

Signed-off-by: Jess Frazelle <acidburn@microsoft.com>
This commit is contained in:
Jess Frazelle
2018-09-17 20:25:54 -04:00
parent 817d420d68
commit f8ba640ced
3 changed files with 22 additions and 11 deletions
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6
pkg/proxy/iptables/proxier.go
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@@ -293,8 +293,10 @@ func NewProxier(ipt utiliptables.Interface,
nodePortAddresses []string,
) (*Proxier, error) {
// Set the route_localnet sysctl we need for
if err := sysctl.SetSysctl(sysctlRouteLocalnet, 1); err != nil {
return nil, fmt.Errorf("can't set sysctl %s: %v", sysctlRouteLocalnet, err)
if val, _ := sysctl.GetSysctl(sysctlRouteLocalnet); val != 1 {
if err := sysctl.SetSysctl(sysctlRouteLocalnet, 1); err != nil {
return nil, fmt.Errorf("can't set sysctl %s: %v", sysctlRouteLocalnet, err)
}
}
// Proxy needs br_netfilter and bridge-nf-call-iptables=1 when containers