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Sample apiserver: Avoid etcd listening on DNS result for "localhost"

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We've had a fun case of `Sample API Server using the current
Aggregator` failing due to DNS returning a response for localhost that
is not 127.0.0.1 and does not exist on the node, causing etcd trying to
bind to a non-existing address and consequently failing. Trying to spare
others this fun :)
This commit is contained in:
Alvaro Aleman 2019-12-18 16:46:49 +01:00
parent 9bd2912e7a
commit 096bdb7121
1 changed files with 12 additions and 1 deletions
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13
test/e2e/apimachinery/aggregator.go
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@ -21,6 +21,7 @@ import (
"encoding/json" "encoding/json"
"fmt" "fmt"
"math/big" "math/big"
"net"
"strings" "strings"
"time" "time"
@ -198,6 +199,12 @@ func TestSampleAPIServer(f *framework.Framework, aggrclient *aggregatorclient.Cl
podLabels := map[string]string{"app": "sample-apiserver", "apiserver": "true"} podLabels := map[string]string{"app": "sample-apiserver", "apiserver": "true"}
replicas := int32(1) replicas := int32(1)
zero := int64(0) zero := int64(0)
etcdLocalhostAddress := "127.0.0.1"
if framework.TestContext.ClusterIsIPv6() {
etcdLocalhostAddress = "::1"
}
etcdURL := fmt.Sprintf("http://%s", net.JoinHostPort(etcdLocalhostAddress, "2379"))
mounts := []v1.VolumeMount{ mounts := []v1.VolumeMount{
{ {
Name: "apiserver-certs", Name: "apiserver-certs",
@ -218,7 +225,7 @@ func TestSampleAPIServer(f *framework.Framework, aggrclient *aggregatorclient.Cl
Name: "sample-apiserver", Name: "sample-apiserver",
VolumeMounts: mounts, VolumeMounts: mounts,
Args: []string{ Args: []string{
"--etcd-servers=http://localhost:2379", fmt.Sprintf("--etcd-servers=%s", etcdURL),
"--tls-cert-file=/apiserver.local.config/certificates/tls.crt", "--tls-cert-file=/apiserver.local.config/certificates/tls.crt",
"--tls-private-key-file=/apiserver.local.config/certificates/tls.key", "--tls-private-key-file=/apiserver.local.config/certificates/tls.key",
"--audit-log-path=-", "--audit-log-path=-",
@ -232,6 +239,10 @@ func TestSampleAPIServer(f *framework.Framework, aggrclient *aggregatorclient.Cl
Image: etcdImage, Image: etcdImage,
Command: []string{ Command: []string{
"/usr/local/bin/etcd", "/usr/local/bin/etcd",
"--listen-client-urls",
etcdURL,
"--advertise-client-urls",
etcdURL,
}, },
}, },
} }