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|
package kubernetes
import (
"net"
"github.com/caddyserver/caddy"
"github.com/coredns/coredns/core/dnsserver"
)
// boundIPs returns the list of non-loopback IPs that CoreDNS is bound to
func boundIPs(c *caddy.Controller) (ips []net.IP) {
conf := dnsserver.GetConfig(c)
hosts := conf.ListenHosts
if hosts == nil || hosts[0] == "" {
hosts = nil
addrs, err := net.InterfaceAddrs()
if err != nil {
return nil
}
for _, addr := range addrs {
hosts = append(hosts, addr.String())
}
}
for _, host := range hosts {
ip, _, _ := net.ParseCIDR(host)
ip4 := ip.To4()
if ip4 != nil && !ip4.IsLoopback() {
ips = append(ips, ip4)
continue
}
ip6 := ip.To16()
if ip6 != nil && !ip6.IsLoopback() {
ips = append(ips, ip6)
}
}
return ips
}
// LocalNodeName is exclusively used in federation plugin, will be deprecated later.
func (k *Kubernetes) LocalNodeName() string {
if len(k.localIPs) == 0 {
return ""
}
// Find fist endpoint matching any localIP
for _, localIP := range k.localIPs {
for _, ep := range k.APIConn.EpIndexReverse(localIP.String()) {
for _, eps := range ep.Subsets {
for _, addr := range eps.Addresses {
if localIP.Equal(net.ParseIP(addr.IP)) {
return addr.NodeName
}
}
}
}
}
return ""
}
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