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Make a certain ipv4-vs-ipv6 config error non-fatal, for backward compat

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This commit is contained in:
Dan Winship
2023-10-05 10:41:04 -04:00
parent f19b62fc09
commit b2f0052d27
2 changed files with 37 additions and 31 deletions
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2
cmd/kube-proxy/app/server.go
View File

@@ -678,7 +678,7 @@ func checkIPConfig(s *ProxyServer, dualStackSupported bool) (error, bool) {
clusterCIDRs := strings.Split(s.Config.ClusterCIDR, ",")
if badCIDRs(clusterCIDRs, badFamily) {
errors = append(errors, fmt.Errorf("cluster is %s but clusterCIDRs contains only IPv%s addresses", clusterType, badFamily))
if s.Config.DetectLocalMode == kubeproxyconfig.LocalModeClusterCIDR {
if s.Config.DetectLocalMode == kubeproxyconfig.LocalModeClusterCIDR && !dualStackSupported {
// This has always been a fatal error
fatal = true
}

66
cmd/kube-proxy/app/server_test.go
View File

@@ -817,11 +817,12 @@ func Test_detectNodeIPs(t *testing.T) {
func Test_checkIPConfig(t *testing.T) {
cases := []struct {
name string
proxy *ProxyServer
ssErr bool
dsErr bool
fatal bool
name string
proxy *ProxyServer
ssErr bool
ssFatal bool
dsErr bool
dsFatal bool
}{
{
name: "empty config",
@@ -874,9 +875,10 @@ func Test_checkIPConfig(t *testing.T) {
},
PrimaryIPFamily: v1.IPv4Protocol,
},
ssErr: true,
dsErr: true,
fatal: false,
ssErr: true,
ssFatal: false,
dsErr: true,
dsFatal: false,
},
{
name: "wrong-family clusterCIDR when using ClusterCIDR LocalDetector",
@@ -887,9 +889,10 @@ func Test_checkIPConfig(t *testing.T) {
},
PrimaryIPFamily: v1.IPv4Protocol,
},
ssErr: true,
dsErr: true,
fatal: true,
ssErr: true,
ssFatal: true,
dsErr: true,
dsFatal: false,
},
{
@@ -933,9 +936,10 @@ func Test_checkIPConfig(t *testing.T) {
},
PrimaryIPFamily: v1.IPv6Protocol,
},
ssErr: true,
dsErr: true,
fatal: false,
ssErr: true,
ssFatal: false,
dsErr: true,
dsFatal: false,
},
{
@@ -983,9 +987,10 @@ func Test_checkIPConfig(t *testing.T) {
PrimaryIPFamily: v1.IPv4Protocol,
podCIDRs: []string{"fd01:2345::/64"},
},
ssErr: true,
dsErr: true,
fatal: true,
ssErr: true,
ssFatal: true,
dsErr: true,
dsFatal: true,
},
{
@@ -1011,9 +1016,10 @@ func Test_checkIPConfig(t *testing.T) {
},
PrimaryIPFamily: v1.IPv4Protocol,
},
ssErr: true,
dsErr: true,
fatal: false,
ssErr: true,
ssFatal: false,
dsErr: true,
dsFatal: false,
},
{
@@ -1057,9 +1063,9 @@ func Test_checkIPConfig(t *testing.T) {
},
PrimaryIPFamily: v1.IPv6Protocol,
},
ssErr: true,
dsErr: false,
fatal: false,
ssErr: true,
ssFatal: false,
dsErr: false,
},
{
@@ -1085,9 +1091,9 @@ func Test_checkIPConfig(t *testing.T) {
},
PrimaryIPFamily: v1.IPv6Protocol,
},
ssErr: true,
dsErr: false,
fatal: false,
ssErr: true,
ssFatal: false,
dsErr: false,
},
}
@@ -1098,8 +1104,8 @@ func Test_checkIPConfig(t *testing.T) {
t.Errorf("unexpected error in single-stack case: %v", err)
} else if err == nil && c.ssErr {
t.Errorf("unexpected lack of error in single-stack case")
} else if fatal != c.fatal {
t.Errorf("expected fatal=%v, got %v", c.fatal, fatal)
} else if fatal != c.ssFatal {
t.Errorf("expected fatal=%v, got %v", c.ssFatal, fatal)
}
err, fatal = checkIPConfig(c.proxy, true)
@@ -1107,8 +1113,8 @@ func Test_checkIPConfig(t *testing.T) {
t.Errorf("unexpected error in dual-stack case: %v", err)
} else if err == nil && c.dsErr {
t.Errorf("unexpected lack of error in dual-stack case")
} else if fatal != c.fatal {
t.Errorf("expected fatal=%v, got %v", c.fatal, fatal)
} else if fatal != c.dsFatal {
t.Errorf("expected fatal=%v, got %v", c.dsFatal, fatal)
}
})
}