xds: only try to create an ipv6 expose checks listener if ipv6 is supported by the kernel (#9765)
Fixes #9311 This only fails if the kernel has ipv6 hard-disabled. It is not sufficient to merely not provide an ipv6 address for a network interface.
This commit is contained in:
R.B. Boyer
GitHub
parent
4553554106
commit
e87d2bb24f
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@ -0,0 +1,3 @@
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```release-note:improvement
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xds: only try to create an ipv6 expose checks listener if ipv6 is supported by the kernel
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```
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@ -690,12 +690,22 @@ func (s *Server) makeExposedCheckListener(cfgSnap *proxycfg.ConfigSnapshot, clus
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advertiseLen = 128
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}
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ranges := make([]*envoycore.CidrRange, 0, 3)
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ranges = append(ranges,
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&envoycore.CidrRange{AddressPrefix: "127.0.0.1", PrefixLen: &wrappers.UInt32Value{Value: 8}},
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&envoycore.CidrRange{AddressPrefix: advertise, PrefixLen: &wrappers.UInt32Value{Value: uint32(advertiseLen)}},
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)
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if ok, err := kernelSupportsIPv6(); err != nil {
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return nil, err
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} else if ok {
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ranges = append(ranges,
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&envoycore.CidrRange{AddressPrefix: "::1", PrefixLen: &wrappers.UInt32Value{Value: 128}},
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)
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}
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chain.FilterChainMatch = &envoylistener.FilterChainMatch{
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SourcePrefixRanges: []*envoycore.CidrRange{
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{AddressPrefix: "127.0.0.1", PrefixLen: &wrappers.UInt32Value{Value: 8}},
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{AddressPrefix: "::1", PrefixLen: &wrappers.UInt32Value{Value: 128}},
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{AddressPrefix: advertise, PrefixLen: &wrappers.UInt32Value{Value: uint32(advertiseLen)}},
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},
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SourcePrefixRanges: ranges,
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}
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}
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@ -6,6 +6,7 @@ import (
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"sort"
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"testing"
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"text/template"
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"time"
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envoy "github.com/envoyproxy/go-control-plane/envoy/api/v2"
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"github.com/envoyproxy/go-control-plane/pkg/wellknown"
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@ -16,6 +17,7 @@ import (
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"github.com/hashicorp/consul/agent/structs"
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"github.com/hashicorp/consul/agent/xds/proxysupport"
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"github.com/hashicorp/consul/sdk/testutil"
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"github.com/hashicorp/consul/types"
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)
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func TestListenersFromSnapshot(t *testing.T) {
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@ -31,6 +33,7 @@ func TestListenersFromSnapshot(t *testing.T) {
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// test input.
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setup func(snap *proxycfg.ConfigSnapshot)
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overrideGoldenName string
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serverSetup func(*Server)
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}{
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{
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name: "defaults",
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@ -304,6 +307,38 @@ func TestListenersFromSnapshot(t *testing.T) {
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}
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},
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},
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{
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// NOTE: if IPv6 is not supported in the kernel per
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// kernelSupportsIPv6() then this test will fail because the golden
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// files were generated assuming ipv6 support was present
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name: "expose-checks",
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create: proxycfg.TestConfigSnapshotExposeConfig,
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setup: func(snap *proxycfg.ConfigSnapshot) {
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snap.Proxy.Expose = structs.ExposeConfig{
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Checks: true,
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}
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},
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serverSetup: func(s *Server) {
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s.CfgFetcher = configFetcherFunc(func() string {
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return "192.0.2.1"
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})
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s.CheckFetcher = httpCheckFetcherFunc(func(sid structs.ServiceID) []structs.CheckType {
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if sid != structs.NewServiceID("web", nil) {
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return nil
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}
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return []structs.CheckType{{
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CheckID: types.CheckID("http"),
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Name: "http",
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HTTP: "http://127.0.0.1:8181/debug",
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ProxyHTTP: "http://:21500/debug",
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Method: "GET",
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Interval: 10 * time.Second,
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Timeout: 1 * time.Second,
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}}
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})
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},
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},
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{
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name: "mesh-gateway",
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create: proxycfg.TestConfigSnapshotMeshGateway,
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@ -519,6 +554,9 @@ func TestListenersFromSnapshot(t *testing.T) {
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// Need server just for logger dependency
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s := Server{Logger: testutil.Logger(t)}
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if tt.serverSetup != nil {
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tt.serverSetup(&s)
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}
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cInfo := connectionInfo{
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Token: "my-token",
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@ -777,3 +815,19 @@ func customHTTPListenerJSON(t *testing.T, opts customHTTPListenerJSONOptions) st
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require.NoError(t, customHTTPListenerJSONTemplate.Execute(&buf, opts))
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return buf.String()
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}
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type httpCheckFetcherFunc func(serviceID structs.ServiceID) []structs.CheckType
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var _ HTTPCheckFetcher = (httpCheckFetcherFunc)(nil)
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func (f httpCheckFetcherFunc) ServiceHTTPBasedChecks(serviceID structs.ServiceID) []structs.CheckType {
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return f(serviceID)
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}
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type configFetcherFunc func() string
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var _ ConfigFetcher = (configFetcherFunc)(nil)
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func (f configFetcherFunc) AdvertiseAddrLAN() string {
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return f()
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}
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@ -0,0 +1,7 @@
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// +build !linux
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package xds
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func kernelSupportsIPv6() (bool, error) {
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return true, nil
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}
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@ -0,0 +1,35 @@
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// +build linux
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package xds
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import (
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"fmt"
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"os"
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"sync"
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)
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const ipv6SupportProcFile = "/proc/net/if_inet6"
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var (
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ipv6SupportOnce sync.Once
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ipv6Supported bool
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ipv6SupportedErr error
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)
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func kernelSupportsIPv6() (bool, error) {
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ipv6SupportOnce.Do(func() {
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ipv6Supported, ipv6SupportedErr = checkIfKernelSupportsIPv6()
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})
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return ipv6Supported, ipv6SupportedErr
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}
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func checkIfKernelSupportsIPv6() (bool, error) {
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_, err := os.Stat(ipv6SupportProcFile)
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if os.IsNotExist(err) {
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return false, nil
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} else if err != nil {
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return false, fmt.Errorf("error checking for ipv6 support file %s: %w", ipv6SupportProcFile, err)
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}
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return true, nil
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}
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@ -0,0 +1,109 @@
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{
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"versionInfo": "00000001",
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"resources": [
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{
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"@type": "type.googleapis.com/envoy.api.v2.Listener",
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"name": "exposed_path_debug:1.2.3.4:21500",
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"address": {
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"socketAddress": {
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"address": "1.2.3.4",
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"portValue": 21500
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}
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},
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"filterChains": [
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{
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"filterChainMatch": {
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"sourcePrefixRanges": [
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{
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"addressPrefix": "127.0.0.1",
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"prefixLen": 8
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},
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{
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"addressPrefix": "192.0.2.1",
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"prefixLen": 32
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},
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{
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"addressPrefix": "::1",
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"prefixLen": 128
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}
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]
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},
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"filters": [
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{
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"name": "envoy.http_connection_manager",
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"config": {
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"http_filters": [
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{
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"name": "envoy.router"
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}
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],
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"route_config": {
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"name": "exposed_path_filter_debug_21500",
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"virtual_hosts": [
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{
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"domains": [
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"*"
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],
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"name": "exposed_path_filter_debug_21500",
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"routes": [
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{
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"match": {
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"path": "/debug"
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},
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"route": {
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"cluster": "exposed_cluster_8181"
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}
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}
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]
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}
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]
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},
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"stat_prefix": "exposed_path_filter_debug_21500",
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"tracing": {
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"random_sampling": {
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}
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}
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}
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}
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]
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}
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]
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},
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{
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"@type": "type.googleapis.com/envoy.api.v2.Listener",
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"name": "public_listener:1.2.3.4:8080",
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"address": {
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"socketAddress": {
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"address": "1.2.3.4",
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"portValue": 8080
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}
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},
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"filterChains": [
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{
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"tlsContext": {
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"requireClientCertificate": true
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},
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"filters": [
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{
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"name": "envoy.filters.network.rbac",
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"config": {
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"rules": {
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},
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"stat_prefix": "connect_authz"
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}
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},
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{
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"name": "envoy.tcp_proxy",
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"config": {
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"cluster": "local_app",
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"stat_prefix": "public_listener"
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}
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}
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]
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}
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]
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}
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],
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"typeUrl": "type.googleapis.com/envoy.api.v2.Listener",
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"nonce": "00000001"
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}
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@ -0,0 +1,109 @@
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{
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"versionInfo": "00000001",
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"resources": [
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{
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"@type": "type.googleapis.com/envoy.api.v2.Listener",
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"name": "exposed_path_debug:1.2.3.4:21500",
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"address": {
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"socketAddress": {
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"address": "1.2.3.4",
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"portValue": 21500
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}
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},
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"filterChains": [
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{
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"filterChainMatch": {
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"sourcePrefixRanges": [
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{
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"addressPrefix": "127.0.0.1",
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"prefixLen": 8
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},
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{
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"addressPrefix": "192.0.2.1",
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"prefixLen": 32
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},
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{
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"addressPrefix": "::1",
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"prefixLen": 128
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}
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]
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},
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"filters": [
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{
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"name": "envoy.http_connection_manager",
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"config": {
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"http_filters": [
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{
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"name": "envoy.router"
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}
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],
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"route_config": {
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"name": "exposed_path_filter_debug_21500",
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"virtual_hosts": [
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{
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"domains": [
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"*"
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],
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"name": "exposed_path_filter_debug_21500",
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"routes": [
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{
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"match": {
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"path": "/debug"
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},
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"route": {
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"cluster": "exposed_cluster_8181"
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}
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}
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]
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}
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]
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},
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"stat_prefix": "exposed_path_filter_debug_21500",
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"tracing": {
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"random_sampling": {
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}
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}
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}
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}
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]
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}
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]
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},
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{
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"@type": "type.googleapis.com/envoy.api.v2.Listener",
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"name": "public_listener:1.2.3.4:8080",
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"address": {
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"socketAddress": {
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"address": "1.2.3.4",
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"portValue": 8080
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}
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},
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"filterChains": [
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{
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"tlsContext": {
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"requireClientCertificate": true
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},
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"filters": [
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{
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"name": "envoy.filters.network.rbac",
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"config": {
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"rules": {
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},
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"stat_prefix": "connect_authz"
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}
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},
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{
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"name": "envoy.tcp_proxy",
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"config": {
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"cluster": "local_app",
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"stat_prefix": "public_listener"
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}
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}
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]
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}
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]
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}
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],
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"typeUrl": "type.googleapis.com/envoy.api.v2.Listener",
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"nonce": "00000001"
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}
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@ -0,0 +1,109 @@
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{
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"versionInfo": "00000001",
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"resources": [
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{
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"@type": "type.googleapis.com/envoy.api.v2.Listener",
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"name": "exposed_path_debug:1.2.3.4:21500",
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"address": {
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"socketAddress": {
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"address": "1.2.3.4",
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"portValue": 21500
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}
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},
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"filterChains": [
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{
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"filterChainMatch": {
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"sourcePrefixRanges": [
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{
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"addressPrefix": "127.0.0.1",
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"prefixLen": 8
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},
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{
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"addressPrefix": "192.0.2.1",
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"prefixLen": 32
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},
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{
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"addressPrefix": "::1",
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"prefixLen": 128
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}
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]
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},
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"filters": [
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{
|
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"name": "envoy.http_connection_manager",
|
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"config": {
|
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"http_filters": [
|
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{
|
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"name": "envoy.router"
|
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}
|
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],
|
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"route_config": {
|
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"name": "exposed_path_filter_debug_21500",
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"virtual_hosts": [
|
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{
|
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"domains": [
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"*"
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],
|
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"name": "exposed_path_filter_debug_21500",
|
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"routes": [
|
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{
|
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"match": {
|
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"path": "/debug"
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},
|
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"route": {
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"cluster": "exposed_cluster_8181"
|
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}
|
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}
|
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]
|
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}
|
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]
|
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},
|
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"stat_prefix": "exposed_path_filter_debug_21500",
|
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"tracing": {
|
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"random_sampling": {
|
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}
|
||||
}
|
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}
|
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}
|
||||
]
|
||||
}
|
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]
|
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},
|
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{
|
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"@type": "type.googleapis.com/envoy.api.v2.Listener",
|
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"name": "public_listener:1.2.3.4:8080",
|
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"address": {
|
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"socketAddress": {
|
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"address": "1.2.3.4",
|
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"portValue": 8080
|
||||
}
|
||||
},
|
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"filterChains": [
|
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{
|
||||
"tlsContext": {
|
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"requireClientCertificate": true
|
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},
|
||||
"filters": [
|
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{
|
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"name": "envoy.filters.network.rbac",
|
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"config": {
|
||||
"rules": {
|
||||
},
|
||||
"stat_prefix": "connect_authz"
|
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}
|
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},
|
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{
|
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"name": "envoy.tcp_proxy",
|
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"config": {
|
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"cluster": "local_app",
|
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"stat_prefix": "public_listener"
|
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}
|
||||
}
|
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]
|
||||
}
|
||||
]
|
||||
}
|
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],
|
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"typeUrl": "type.googleapis.com/envoy.api.v2.Listener",
|
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"nonce": "00000001"
|
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}
|
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|
|
@ -0,0 +1,109 @@
|
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{
|
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"versionInfo": "00000001",
|
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"resources": [
|
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{
|
||||
"@type": "type.googleapis.com/envoy.api.v2.Listener",
|
||||
"name": "exposed_path_debug:1.2.3.4:21500",
|
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"address": {
|
||||
"socketAddress": {
|
||||
"address": "1.2.3.4",
|
||||
"portValue": 21500
|
||||
}
|
||||
},
|
||||
"filterChains": [
|
||||
{
|
||||
"filterChainMatch": {
|
||||
"sourcePrefixRanges": [
|
||||
{
|
||||
"addressPrefix": "127.0.0.1",
|
||||
"prefixLen": 8
|
||||
},
|
||||
{
|
||||
"addressPrefix": "192.0.2.1",
|
||||
"prefixLen": 32
|
||||
},
|
||||
{
|
||||
"addressPrefix": "::1",
|
||||
"prefixLen": 128
|
||||
}
|
||||
]
|
||||
},
|
||||
"filters": [
|
||||
{
|
||||
"name": "envoy.http_connection_manager",
|
||||
"config": {
|
||||
"http_filters": [
|
||||
{
|
||||
"name": "envoy.router"
|
||||
}
|
||||
],
|
||||
"route_config": {
|
||||
"name": "exposed_path_filter_debug_21500",
|
||||
"virtual_hosts": [
|
||||
{
|
||||
"domains": [
|
||||
"*"
|
||||
],
|
||||
"name": "exposed_path_filter_debug_21500",
|
||||
"routes": [
|
||||
{
|
||||
"match": {
|
||||
"path": "/debug"
|
||||
},
|
||||
"route": {
|
||||
"cluster": "exposed_cluster_8181"
|
||||
}
|
||||
}
|
||||
]
|
||||
}
|
||||
]
|
||||
},
|
||||
"stat_prefix": "exposed_path_filter_debug_21500",
|
||||
"tracing": {
|
||||
"random_sampling": {
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
]
|
||||
}
|
||||
]
|
||||
},
|
||||
{
|
||||
"@type": "type.googleapis.com/envoy.api.v2.Listener",
|
||||
"name": "public_listener:1.2.3.4:8080",
|
||||
"address": {
|
||||
"socketAddress": {
|
||||
"address": "1.2.3.4",
|
||||
"portValue": 8080
|
||||
}
|
||||
},
|
||||
"filterChains": [
|
||||
{
|
||||
"tlsContext": {
|
||||
"requireClientCertificate": true
|
||||
},
|
||||
"filters": [
|
||||
{
|
||||
"name": "envoy.filters.network.rbac",
|
||||
"config": {
|
||||
"rules": {
|
||||
},
|
||||
"stat_prefix": "connect_authz"
|
||||
}
|
||||
},
|
||||
{
|
||||
"name": "envoy.tcp_proxy",
|
||||
"config": {
|
||||
"cluster": "local_app",
|
||||
"stat_prefix": "public_listener"
|
||||
}
|
||||
}
|
||||
]
|
||||
}
|
||||
]
|
||||
}
|
||||
],
|
||||
"typeUrl": "type.googleapis.com/envoy.api.v2.Listener",
|
||||
"nonce": "00000001"
|
||||
}
|
||||
|
|
@ -0,0 +1,4 @@
|
|||
#!/bin/bash
|
||||
|
||||
snapshot_envoy_admin localhost:19000 s1 || true
|
||||
snapshot_envoy_admin localhost:19001 s2 || true
|
||||
|
|
@ -0,0 +1,16 @@
|
|||
services {
|
||||
name = "s1"
|
||||
port = 8080
|
||||
connect {
|
||||
sidecar_service {
|
||||
proxy {
|
||||
upstreams = [
|
||||
{
|
||||
destination_name = "s2"
|
||||
local_bind_port = 5000
|
||||
}
|
||||
]
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,22 @@
|
|||
services {
|
||||
name = "s2"
|
||||
port = 8181
|
||||
connect {
|
||||
sidecar_service {
|
||||
proxy {
|
||||
expose {
|
||||
checks = true
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
checks = [
|
||||
{
|
||||
name = "http"
|
||||
http = "http://127.0.0.1:8181/debug"
|
||||
method = "GET"
|
||||
interval = "10s"
|
||||
timeout = "1s"
|
||||
},
|
||||
]
|
||||
}
|
||||
|
|
@ -0,0 +1,8 @@
|
|||
#!/bin/bash
|
||||
|
||||
set -eEuo pipefail
|
||||
|
||||
register_services primary
|
||||
|
||||
gen_envoy_bootstrap s1 19000 primary
|
||||
gen_envoy_bootstrap s2 19001 primary
|
||||
|
|
@ -0,0 +1,41 @@
|
|||
#!/usr/bin/env bats
|
||||
|
||||
load helpers
|
||||
|
||||
@test "s1 proxy is running correct version" {
|
||||
assert_envoy_version 19000
|
||||
}
|
||||
|
||||
@test "s1 proxy admin is up on :19000" {
|
||||
retry_default curl -f -s localhost:19000/stats -o /dev/null
|
||||
}
|
||||
|
||||
@test "s2 proxy admin is up on :19001" {
|
||||
retry_default curl -f -s localhost:19001/stats -o /dev/null
|
||||
}
|
||||
|
||||
@test "s1 proxy listener should be up and have right cert" {
|
||||
assert_proxy_presents_cert_uri localhost:21000 s1
|
||||
}
|
||||
|
||||
@test "s2 proxy listener should be up and have right cert" {
|
||||
assert_proxy_presents_cert_uri localhost:21001 s2
|
||||
}
|
||||
|
||||
@test "s2 proxy should be healthy" {
|
||||
assert_service_has_healthy_instances s2 1
|
||||
}
|
||||
|
||||
@test "s1 upstream should have healthy endpoints for s2" {
|
||||
assert_upstream_has_endpoints_in_status 127.0.0.1:19000 s2.default.primary HEALTHY 1
|
||||
}
|
||||
|
||||
@test "s1 upstream should be able to connect to s2" {
|
||||
run retry_default curl -s -f -d hello localhost:5000
|
||||
[ "$status" -eq 0 ]
|
||||
[ "$output" = "hello" ]
|
||||
}
|
||||
|
||||
@test "s2 exposes checks on a new listener" {
|
||||
assert_envoy_expose_checks_listener_count localhost:19001 /debug
|
||||
}
|
||||
|
|
@ -152,6 +152,39 @@ function assert_envoy_version {
|
|||
echo $VERSION | grep "/$ENVOY_VERSION/"
|
||||
}
|
||||
|
||||
function assert_envoy_expose_checks_listener_count {
|
||||
local HOSTPORT=$1
|
||||
local EXPECT_PATH=$2
|
||||
|
||||
# scrape this once
|
||||
BODY=$(get_envoy_expose_checks_listener_once $HOSTPORT)
|
||||
echo "BODY = $BODY"
|
||||
|
||||
CHAINS=$(echo "$BODY" | jq '.active_state.listener.filter_chains | length')
|
||||
echo "CHAINS = $CHAINS (expect 1)"
|
||||
[ "${CHAINS:-0}" -eq 1 ]
|
||||
|
||||
RANGES=$(echo "$BODY" | jq '.active_state.listener.filter_chains[0].filter_chain_match.source_prefix_ranges | length')
|
||||
echo "RANGES = $RANGES (expect 3)"
|
||||
# note: if IPv6 is not supported in the kernel per
|
||||
# agent/xds:kernelSupportsIPv6() then this will only be 2
|
||||
[ "${RANGES:-0}" -eq 3 ]
|
||||
|
||||
HCM=$(echo "$BODY" | jq '.active_state.listener.filter_chains[0].filters[0]')
|
||||
HCM_NAME=$(echo "$HCM" | jq -r '.name')
|
||||
HCM_PATH=$(echo "$HCM" | jq -r '.config.route_config.virtual_hosts[0].routes[0].match.path')
|
||||
echo "HCM = $HCM"
|
||||
[ "${HCM_NAME:-}" == "envoy.http_connection_manager" ]
|
||||
[ "${HCM_PATH:-}" == "${EXPECT_PATH}" ]
|
||||
}
|
||||
|
||||
function get_envoy_expose_checks_listener_once {
|
||||
local HOSTPORT=$1
|
||||
run curl -s -f $HOSTPORT/config_dump
|
||||
[ "$status" -eq 0 ]
|
||||
echo "$output" | jq --raw-output '.configs[] | select(.["@type"] == "type.googleapis.com/envoy.admin.v3.ListenersConfigDump") | .dynamic_listeners[] | select(.name | startswith("exposed_path_"))'
|
||||
}
|
||||
|
||||
function assert_envoy_http_rbac_policy_count {
|
||||
local HOSTPORT=$1
|
||||
local EXPECT_COUNT=$2
|
||||
|
|
|
|||
Loading…
Reference in New Issue