Mixing
Kubernetes gives an internal source IP although externalTrafficPolicy is set to Local
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 asked Oct 15 '18 at 8:04
Johannes Mittendorfer
556212
add a comment |
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 asked Oct 15 '18 at 8:04
Johannes Mittendorfer
556212
I found out that weave needs to be configured usingNO_MASQ_LOCAL=1to respect theexternalTrafficPolicyproperty.
– Johannes Mittendorfer
Oct 15 '18 at 12:54
add a comment |
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 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 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
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 usingNO_MASQ_LOCAL=1to respect theexternalTrafficPolicyproperty.
– Johannes Mittendorfer
Oct 15 '18 at 12:54
add a comment |
I found out that weave needs to be configured usingNO_MASQ_LOCAL=1to respect theexternalTrafficPolicyproperty.
– 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
This appears to be a bug in the IPVS implementation for services of type LoadBalancer : https://github.com/google/metallb/issues/290
answered Nov 19 '18 at 17:09
eknudtson
1
add a comment |
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1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
This appears to be a bug in the IPVS implementation for services of type LoadBalancer : https://github.com/google/metallb/issues/290
answered Nov 19 '18 at 17:09
eknudtson
1
add a comment |
This appears to be a bug in the IPVS implementation for services of type LoadBalancer : https://github.com/google/metallb/issues/290
answered Nov 19 '18 at 17:09
eknudtson
1
add a comment |
This appears to be a bug in the IPVS implementation for services of type LoadBalancer : https://github.com/google/metallb/issues/290
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
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
answered Nov 19 '18 at 17:09
eknudtson
1
1
add a comment |
add a comment |
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I found out that weave needs to be configured using
NO_MASQ_LOCAL=1to respect theexternalTrafficPolicyproperty.– Johannes Mittendorfer
Oct 15 '18 at 12:54