Kubernetes gives an internal source IP although externalTrafficPolicy is set to Local

2

Our Kubernetes cluster includes an nginx load balancer that forwards the requests to other pods.

However, the nginx sees local source IPs and therefore cannot set the correct X-Real-IP header. I tried setting the externalTrafficPolicy value of nginx to "Local" but the IP does not change.

Section of the nginx service config:

 "selector": {

  "app": "nginx-ingress",

  "component": "controller",

  "release": "loping-lambkin"

},

"clusterIP": "10.106.1.182",

"type": "LoadBalancer",

"sessionAffinity": "None",

"externalTrafficPolicy": "Local",

"healthCheckNodePort": 32718

Result:

GET / HTTP/1.1

Host: example.com:444

X-Request-ID: dd3310a96bf154d2ac38c8877dec312c

X-Real-IP: 10.39.0.0

X-Forwarded-For: 10.39.0.0

We use a bare metal cluster with metallb.

nginx kubernetes load-balancing kubernetes-ingress nginx-ingress

share|improve this question

asked Oct 15 '18 at 8:04

Johannes Mittendorfer

556212

• 
  
  
  

  
  

  
  
  
  
  
  

  
  I found out that weave needs to be configured using NO_MASQ_LOCAL=1 to respect the externalTrafficPolicy property.
  – Johannes Mittendorfer
  Oct 15 '18 at 12:54
  

  
  
  
  

add a comment | 

2

Our Kubernetes cluster includes an nginx load balancer that forwards the requests to other pods.

However, the nginx sees local source IPs and therefore cannot set the correct X-Real-IP header. I tried setting the externalTrafficPolicy value of nginx to "Local" but the IP does not change.

Section of the nginx service config:

 "selector": {

  "app": "nginx-ingress",

  "component": "controller",

  "release": "loping-lambkin"

},

"clusterIP": "10.106.1.182",

"type": "LoadBalancer",

"sessionAffinity": "None",

"externalTrafficPolicy": "Local",

"healthCheckNodePort": 32718

Result:

GET / HTTP/1.1

Host: example.com:444

X-Request-ID: dd3310a96bf154d2ac38c8877dec312c

X-Real-IP: 10.39.0.0

X-Forwarded-For: 10.39.0.0

We use a bare metal cluster with metallb.

nginx kubernetes load-balancing kubernetes-ingress nginx-ingress

share|improve this question

asked Oct 15 '18 at 8:04

Johannes Mittendorfer

556212

• 
  
  
  

  
  

  
  
  
  
  
  

  
  I found out that weave needs to be configured using NO_MASQ_LOCAL=1 to respect the externalTrafficPolicy property.
  – Johannes Mittendorfer
  Oct 15 '18 at 12:54
  

  
  
  
  

add a comment | 

2

2

2

1

Our Kubernetes cluster includes an nginx load balancer that forwards the requests to other pods.

However, the nginx sees local source IPs and therefore cannot set the correct X-Real-IP header. I tried setting the externalTrafficPolicy value of nginx to "Local" but the IP does not change.

Section of the nginx service config:

 "selector": {

  "app": "nginx-ingress",

  "component": "controller",

  "release": "loping-lambkin"

},

"clusterIP": "10.106.1.182",

"type": "LoadBalancer",

"sessionAffinity": "None",

"externalTrafficPolicy": "Local",

"healthCheckNodePort": 32718

Result:

GET / HTTP/1.1

Host: example.com:444

X-Request-ID: dd3310a96bf154d2ac38c8877dec312c

X-Real-IP: 10.39.0.0

X-Forwarded-For: 10.39.0.0

We use a bare metal cluster with metallb.

nginx kubernetes load-balancing kubernetes-ingress nginx-ingress

share|improve this question

asked Oct 15 '18 at 8:04

Johannes Mittendorfer

556212

Our Kubernetes cluster includes an nginx load balancer that forwards the requests to other pods.

However, the nginx sees local source IPs and therefore cannot set the correct X-Real-IP header. I tried setting the externalTrafficPolicy value of nginx to "Local" but the IP does not change.

Section of the nginx service config:

 "selector": {

  "app": "nginx-ingress",

  "component": "controller",

  "release": "loping-lambkin"

},

"clusterIP": "10.106.1.182",

"type": "LoadBalancer",

"sessionAffinity": "None",

"externalTrafficPolicy": "Local",

"healthCheckNodePort": 32718

Result:

GET / HTTP/1.1

Host: example.com:444

X-Request-ID: dd3310a96bf154d2ac38c8877dec312c

X-Real-IP: 10.39.0.0

X-Forwarded-For: 10.39.0.0

We use a bare metal cluster with metallb.

nginx kubernetes load-balancing kubernetes-ingress nginx-ingress

nginx kubernetes load-balancing kubernetes-ingress nginx-ingress

share|improve this question

asked Oct 15 '18 at 8:04

Johannes Mittendorfer

556212

share|improve this question

asked Oct 15 '18 at 8:04

Johannes Mittendorfer

556212

share|improve this question

share|improve this question

asked Oct 15 '18 at 8:04

Johannes Mittendorfer

556212

asked Oct 15 '18 at 8:04

Johannes Mittendorfer

556212

asked Oct 15 '18 at 8:04

Johannes Mittendorfer

556212

556212

• 
  
  
  

  
  

  
  
  
  
  
  

  
  I found out that weave needs to be configured using NO_MASQ_LOCAL=1 to respect the externalTrafficPolicy property.
  – Johannes Mittendorfer
  Oct 15 '18 at 12:54
  

  
  
  
  

add a comment | 

• 
  
  
  

  
  

  
  
  
  
  
  

  
  I found out that weave needs to be configured using NO_MASQ_LOCAL=1 to respect the externalTrafficPolicy property.
  – Johannes Mittendorfer
  Oct 15 '18 at 12:54
  

  
  
  
  

I found out that weave needs to be configured using NO_MASQ_LOCAL=1 to respect the externalTrafficPolicy property.
– Johannes Mittendorfer
Oct 15 '18 at 12:54

I found out that weave needs to be configured using NO_MASQ_LOCAL=1 to respect the externalTrafficPolicy property.
– Johannes Mittendorfer
Oct 15 '18 at 12:54

add a comment | 

1 Answer
1

active

oldest

votes

0

This appears to be a bug in the IPVS implementation for services of type LoadBalancer : https://github.com/google/metallb/issues/290

share|improve this answer

answered Nov 19 '18 at 17:09

eknudtson

1

add a comment | 

Your Answer

StackExchange.ifUsing("editor", function () {
StackExchange.using("externalEditor", function () {
StackExchange.using("snippets", function () {
StackExchange.snippets.init();
});
});
}, "code-snippets");

StackExchange.ready(function() {
var channelOptions = {
tags: "".split(" "),
id: "1"
};
initTagRenderer("".split(" "), "".split(" "), channelOptions);

StackExchange.using("externalEditor", function() {
// Have to fire editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled) {
StackExchange.using("snippets", function() {
createEditor();
});
}
else {
createEditor();
}
});

function createEditor() {
StackExchange.prepareEditor({
heartbeatType: 'answer',
autoActivateHeartbeat: false,
convertImagesToLinks: true,
noModals: true,
showLowRepImageUploadWarning: true,
reputationToPostImages: 10,
bindNavPrevention: true,
postfix: "",
imageUploader: {
brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
allowUrls: true
},
onDemand: true,
discardSelector: ".discard-answer"
,immediatelyShowMarkdownHelp:true
});


}
});

Thanks for contributing an answer to Stack Overflow!

• Please be sure to answer the question. Provide details and share your research!

But avoid …

• Asking for help, clarification, or responding to other answers.


• Making statements based on opinion; back them up with references or personal experience.

To learn more, see our tips on writing great answers.

Some of your past answers have not been well-received, and you're in danger of being blocked from answering.

Please pay close attention to the following guidance:

• Please be sure to answer the question. Provide details and share your research!

But avoid …

• Asking for help, clarification, or responding to other answers.


• Making statements based on opinion; back them up with references or personal experience.

To learn more, see our tips on writing great answers.

draft saved

draft discarded

Sign up or log in

StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});

Sign up using Google

Sign up using Facebook

Sign up using Email and Password

Post as a guest

Name

Email

Required, but never shown

StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f52812230%2fkubernetes-gives-an-internal-source-ip-although-externaltrafficpolicy-is-set-to%23new-answer', 'question_page');
}
);

Post as a guest

Name

Email

Required, but never shown

1 Answer
1

active

oldest

votes

1 Answer
1

active

oldest

votes

active

oldest

votes

active

oldest

votes

0

This appears to be a bug in the IPVS implementation for services of type LoadBalancer : https://github.com/google/metallb/issues/290

share|improve this answer

answered Nov 19 '18 at 17:09

eknudtson

1

add a comment | 

0

This appears to be a bug in the IPVS implementation for services of type LoadBalancer : https://github.com/google/metallb/issues/290

share|improve this answer

answered Nov 19 '18 at 17:09

eknudtson

1

add a comment | 

0

0

0

This appears to be a bug in the IPVS implementation for services of type LoadBalancer : https://github.com/google/metallb/issues/290

share|improve this answer

answered Nov 19 '18 at 17:09

eknudtson

1

This appears to be a bug in the IPVS implementation for services of type LoadBalancer : https://github.com/google/metallb/issues/290

share|improve this answer

answered Nov 19 '18 at 17:09

eknudtson

1

share|improve this answer

share|improve this answer

answered Nov 19 '18 at 17:09

eknudtson

1

answered Nov 19 '18 at 17:09

eknudtson

1

answered Nov 19 '18 at 17:09

eknudtson

1

1

add a comment | 

add a comment | 

Thanks for contributing an answer to Stack Overflow!

• Please be sure to answer the question. Provide details and share your research!

But avoid …

• Asking for help, clarification, or responding to other answers.


• Making statements based on opinion; back them up with references or personal experience.

To learn more, see our tips on writing great answers.

Some of your past answers have not been well-received, and you're in danger of being blocked from answering.

Please pay close attention to the following guidance:

• Please be sure to answer the question. Provide details and share your research!

But avoid …

• Asking for help, clarification, or responding to other answers.


• Making statements based on opinion; back them up with references or personal experience.

To learn more, see our tips on writing great answers.

draft saved

draft discarded

Thanks for contributing an answer to Stack Overflow!

• Please be sure to answer the question. Provide details and share your research!

But avoid …

• Asking for help, clarification, or responding to other answers.


• Making statements based on opinion; back them up with references or personal experience.

To learn more, see our tips on writing great answers.

Some of your past answers have not been well-received, and you're in danger of being blocked from answering.

Please pay close attention to the following guidance:

• Please be sure to answer the question. Provide details and share your research!

But avoid …

• Asking for help, clarification, or responding to other answers.


• Making statements based on opinion; back them up with references or personal experience.

To learn more, see our tips on writing great answers.

draft saved

draft discarded

Sign up or log in

StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});

Sign up using Google

Sign up using Facebook

Sign up using Email and Password

Post as a guest

Name

Email

Required, but never shown

StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f52812230%2fkubernetes-gives-an-internal-source-ip-although-externaltrafficpolicy-is-set-to%23new-answer', 'question_page');
}
);

Post as a guest

Name

Email

Required, but never shown

Sign up or log in

StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});

Sign up using Google

Sign up using Facebook

Sign up using Email and Password

Post as a guest

Name

Email

Required, but never shown

Sign up or log in

StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});

Sign up using Google

Sign up using Facebook

Sign up using Email and Password

Post as a guest

Name

Email

Required, but never shown

Sign up or log in

StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});

Sign up using Google

Sign up using Facebook

Sign up using Email and Password

Sign up using Google

Sign up using Facebook

Sign up using Email and Password

Post as a guest

Name

Email

Required, but never shown

Name

Name

Email

Required, but never shown

Email

Required, but never shown

Email

Required, but never shown

Email

Required, but never shown

Name

Name

Email

Required, but never shown

Email

Required, but never shown

Email

Required, but never shown

Email

Required, but never shown

This page is only for reference, If you need detailed information, please check here