github/kubernetes
1
0
Fork 0
mirror of https://github.com/k3s-io/kubernetes.git synced 2025-07-24 20:24:09 +00:00
Code Issues Projects Releases Wiki Activity

proxy utils: check network interfaces only once

Browse Source 
Signed-off-by: Andrew Sy Kim <kim.andrewsy@gmail.com>
This commit is contained in:
Andrew Sy Kim 2020-05-26 12:09:27 -04:00
parent 3a95b1130a
commit a99321c87c
1 changed files with 10 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
pkg/proxy/util/utils.go
View File

@ -181,29 +181,35 @@ func GetNodeAddresses(cidrs []string, nw NetworkInterfacer) (sets.String, error)
uniqueAddressList.Insert(cidr)
}
}
itfs, err := nw.Interfaces()
if err != nil {
return nil, fmt.Errorf("error listing all interfaces from host, error: %v", err)
}
// Second round of iteration to parse IPs based on cidr.
for _, cidr := range cidrs {
if IsZeroCIDR(cidr) {
continue
}
_, ipNet, _ := net.ParseCIDR(cidr)
itfs, err := nw.Interfaces()
if err != nil {
return nil, fmt.Errorf("error listing all interfaces from host, error: %v", err)
}
for _, itf := range itfs {
addrs, err := nw.Addrs(&itf)
if err != nil {
return nil, fmt.Errorf("error getting address from interface %s, error: %v", itf.Name, err)
}
for _, addr := range addrs {
if addr == nil {
continue
}
ip, _, err := net.ParseCIDR(addr.String())
if err != nil {
return nil, fmt.Errorf("error parsing CIDR for interface %s, error: %v", itf.Name, err)
}
if ipNet.Contains(ip) {
if utilnet.IsIPv6(ip) && !uniqueAddressList.Has(IPv6ZeroCIDR) {
uniqueAddressList.Insert(ip.String())