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e2e: recognize multi-node control planes

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We were treating multiple nodes as a failure; instead we can return all
the node (internal) IPs we find.
This commit is contained in:
Justin Santa Barbara 2021-01-09 09:13:31 -05:00
parent 67541a1bcc
commit 33055a8b6b
1 changed files with 19 additions and 16 deletions
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35
test/e2e/framework/util.go
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@ -1234,20 +1234,23 @@ func RunCmdEnv(env []string, command string, args ...string) (string, string, er
return stdout, stderr, nil
}
// getMasterAddresses returns the externalIP, internalIP and hostname fields of the master.
// If any of these is unavailable, it is set to "".
func getMasterAddresses(c clientset.Interface) (string, string, string) {
var externalIP, internalIP, hostname string
// getControlPlaneAddresses returns the externalIP, internalIP and hostname fields of control plane nodes.
// If any of these is unavailable, empty slices are returned.
func getControlPlaneAddresses(c clientset.Interface) ([]string, []string, []string) {
var externalIPs, internalIPs, hostnames []string
// Populate the internal IP.
// Populate the internal IPs.
eps, err := c.CoreV1().Endpoints(metav1.NamespaceDefault).Get(context.TODO(), "kubernetes", metav1.GetOptions{})
if err != nil {
Failf("Failed to get kubernetes endpoints: %v", err)
}
if len(eps.Subsets) != 1 || len(eps.Subsets[0].Addresses) != 1 {
Failf("There are more than 1 endpoints for kubernetes service: %+v", eps)
for _, subset := range eps.Subsets {
for _, address := range subset.Addresses {
if address.IP != "" {
internalIPs = append(internalIPs, address.IP)
}
}
}
internalIP = eps.Subsets[0].Addresses[0].IP
// Populate the external IP/hostname.
hostURL, err := url.Parse(TestContext.Host)
@ -1255,12 +1258,12 @@ func getMasterAddresses(c clientset.Interface) (string, string, string) {
Failf("Failed to parse hostname: %v", err)
}
if net.ParseIP(hostURL.Host) != nil {
externalIP = hostURL.Host
externalIPs = append(externalIPs, hostURL.Host)
} else {
hostname = hostURL.Host
hostnames = append(hostnames, hostURL.Host)
}
return externalIP, internalIP, hostname
return externalIPs, internalIPs, hostnames
}
// GetControlPlaneAddresses returns all IP addresses on which the kubelet can reach the control plane.
@ -1268,16 +1271,16 @@ func getMasterAddresses(c clientset.Interface) (string, string, string) {
// e.g. internal IPs to be used (issue #56787), so that we can be
// sure to block the control plane fully during tests.
func GetControlPlaneAddresses(c clientset.Interface) []string {
externalIP, internalIP, _ := getMasterAddresses(c)
externalIPs, internalIPs, _ := getControlPlaneAddresses(c)
ips := sets.NewString()
switch TestContext.Provider {
case "gce", "gke":
if externalIP != "" {
ips.Insert(externalIP)
for _, ip := range externalIPs {
ips.Insert(ip)
}
if internalIP != "" {
ips.Insert(internalIP)
for _, ip := range internalIPs {
ips.Insert(ip)
}
case "aws":
ips.Insert(awsMasterIP)