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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
}

30
cmd/kube-proxy/app/server_test.go
View File

@ -820,8 +820,9 @@ func Test_checkIPConfig(t *testing.T) {
name string
proxy *ProxyServer
ssErr bool
ssFatal bool
dsErr bool
fatal bool
dsFatal bool
}{
{
name: "empty config",
@ -875,8 +876,9 @@ func Test_checkIPConfig(t *testing.T) {
PrimaryIPFamily: v1.IPv4Protocol,
},
ssErr: true,
ssFatal: false,
dsErr: true,
fatal: false,
dsFatal: false,
},
{
name: "wrong-family clusterCIDR when using ClusterCIDR LocalDetector",
@ -888,8 +890,9 @@ func Test_checkIPConfig(t *testing.T) {
PrimaryIPFamily: v1.IPv4Protocol,
},
ssErr: true,
ssFatal: true,
dsErr: true,
fatal: true,
dsFatal: false,
},
{
@ -934,8 +937,9 @@ func Test_checkIPConfig(t *testing.T) {
PrimaryIPFamily: v1.IPv6Protocol,
},
ssErr: true,
ssFatal: false,
dsErr: true,
fatal: false,
dsFatal: false,
},
{
@ -984,8 +988,9 @@ func Test_checkIPConfig(t *testing.T) {
podCIDRs: []string{"fd01:2345::/64"},
},
ssErr: true,
ssFatal: true,
dsErr: true,
fatal: true,
dsFatal: true,
},
{
@ -1012,8 +1017,9 @@ func Test_checkIPConfig(t *testing.T) {
PrimaryIPFamily: v1.IPv4Protocol,
},
ssErr: true,
ssFatal: false,
dsErr: true,
fatal: false,
dsFatal: false,
},
{
@ -1058,8 +1064,8 @@ func Test_checkIPConfig(t *testing.T) {
PrimaryIPFamily: v1.IPv6Protocol,
},
ssErr: true,
ssFatal: false,
dsErr: false,
fatal: false,
},
{
@ -1086,8 +1092,8 @@ func Test_checkIPConfig(t *testing.T) {
PrimaryIPFamily: v1.IPv6Protocol,
},
ssErr: true,
ssFatal: false,
dsErr: false,
fatal: 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)
}
})
}