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Merge pull request #76826 from bclau/tests/nettest-recheck

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tests: Adds retry to netexec connectivity check
This commit is contained in:
Kubernetes Prow Robot 2019-05-29 11:26:00 -07:00 committed by GitHub
commit cc11d977b4
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2 changed files with 22 additions and 5 deletions
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1
test/images/nettest/BUILD
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@ -13,6 +13,7 @@ go_library(
deps = [ deps = [
"//staging/src/k8s.io/apimachinery/pkg/apis/meta/v1:go_default_library", "//staging/src/k8s.io/apimachinery/pkg/apis/meta/v1:go_default_library",
"//staging/src/k8s.io/apimachinery/pkg/util/sets:go_default_library", "//staging/src/k8s.io/apimachinery/pkg/util/sets:go_default_library",
"//staging/src/k8s.io/apimachinery/pkg/version:go_default_library",
"//staging/src/k8s.io/client-go/kubernetes:go_default_library", "//staging/src/k8s.io/client-go/kubernetes:go_default_library",
"//staging/src/k8s.io/client-go/rest:go_default_library", "//staging/src/k8s.io/client-go/rest:go_default_library",
], ],

22
test/images/nettest/nettest.go
View File

@ -46,6 +46,7 @@ import (
v1 "k8s.io/apimachinery/pkg/apis/meta/v1" v1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/util/sets" "k8s.io/apimachinery/pkg/util/sets"
"k8s.io/apimachinery/pkg/version"
clientset "k8s.io/client-go/kubernetes" clientset "k8s.io/client-go/kubernetes"
restclient "k8s.io/client-go/rest" restclient "k8s.io/client-go/rest"
) )
@ -217,6 +218,10 @@ func main() {
// Find all sibling pods in the service and post to their /write handler. // Find all sibling pods in the service and post to their /write handler.
func contactOthers(state *State) { func contactOthers(state *State) {
var (
versionInfo *version.Info
err error
)
sleepTime := 5 * time.Second sleepTime := 5 * time.Second
// In large cluster getting all endpoints is pretty expensive. // In large cluster getting all endpoints is pretty expensive.
// Thus, we will limit ourselves to send on average at most 10 such // Thus, we will limit ourselves to send on average at most 10 such
@ -241,11 +246,22 @@ func contactOthers(state *State) {
if err != nil { if err != nil {
log.Fatalf("Unable to create client; error: %v\n", err) log.Fatalf("Unable to create client; error: %v\n", err)
} }
// Try to get the server version until <timeout>; we use a timeout because
// the pod might not have immediate network connectivity.
for start := time.Now(); time.Since(start) < timeout; time.Sleep(sleepTime) {
// Double check that worked by getting the server version. // Double check that worked by getting the server version.
if v, err := client.Discovery().ServerVersion(); err != nil { if versionInfo, err = client.Discovery().ServerVersion(); err != nil {
log.Fatalf("Unable to get server version: %v\n", err) log.Printf("Unable to get server version: %v; retrying.\n", err)
} else { } else {
log.Printf("Server version: %#v\n", v) log.Printf("Server version: %#v\n", versionInfo)
break
}
time.Sleep(1 * time.Second)
}
if err != nil {
log.Fatalf("Unable to contact Kubernetes: %v\n", err)
} }
for start := time.Now(); time.Since(start) < timeout; time.Sleep(sleepTime) { for start := time.Now(); time.Since(start) < timeout; time.Sleep(sleepTime) {