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What is the proper way to deal with the HTTPProxyCIDR WARNING and to setup no_proxy in an environment that sits behind a proxy

kube-dns kubedns/dnsmasq/sidecar fails to startWhere is Flanneld configuration that Kubernetes (installed by Kubeadm) use?Kubernetes Multi Master setupKube-Flannel cant get CIDR although PodCIDR available on nodeKubernetes upgrade failed to keep Pod SubnetHow to set no_proxy in Kubernetes podsCoredns in pending state in Kubernetes clusterKubernetes api server is not starting on a single kubeadm clusterCoredns in CrashLoopBackOff (kubernetes 1.11)Pending message exposed externalApi

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1

1

I'm relatively new to k8s. I have now set up a cluster several times to ensure that I understand the process. I have struggled with networking a bit. I am currently initializing as follows:

kubeadm init --apiserver-advertise-address=10.93.98.204 --pod-network-cidr=10.244.0.0/16

In response to this I see the following warning:

[WARNING HTTPProxyCIDR]: connection to "10.96.0.0/12" uses proxy "http://proxy.corp.sensis. com:3128". This may lead to malfunctional cluster setup. Make sure that Pod and Services IP ranges specified correctly as exceptions in proxy configuration

Amongst other things, I am trying to ensure that I configure the cluster correctly, and the overlay network (flannel).

I've attempted to establish the no_proxy environment variable (centos 7).

The way that i tried this was as follows was to update /etc/profile.d/proxy.sh as follows:

printf -v lan '%s,' "10.93.98.204","10.93.98.23","10.93.98.36","10.93.103.236","10.93.97.123","10.93.97.202"
printf -v service '%s,' 10.244.1..255.1..255
export no_proxy="$lan%,,$service%,,127.0.0.1";
#export no_proxy="$lan%,,10.244.0.0/16,127.0.0.1";
export NO_PROXY=$no_proxy

However, this approach results in a massive string ($no_proxy) that far exceeds the maximum length within the Linux environment.

I've also tried using the pod-network-cidr in the no_proxy (10.244.0.0/16 - commented out in the above)

Two questions:
- What is the proper way to deal with this warning (WARNING HTTPProxyCIDR)?
- How can I set no_proxy so that my flannel network overlay works and my cluster works

kubernetes kubeadm

share|improve this question

edited Apr 9 at 23:31

Rico

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asked Mar 27 at 12:28

Dave SargradDave Sargrad

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add a comment | 

1

1

I'm relatively new to k8s. I have now set up a cluster several times to ensure that I understand the process. I have struggled with networking a bit. I am currently initializing as follows:

kubeadm init --apiserver-advertise-address=10.93.98.204 --pod-network-cidr=10.244.0.0/16

In response to this I see the following warning:

[WARNING HTTPProxyCIDR]: connection to "10.96.0.0/12" uses proxy "http://proxy.corp.sensis. com:3128". This may lead to malfunctional cluster setup. Make sure that Pod and Services IP ranges specified correctly as exceptions in proxy configuration

Amongst other things, I am trying to ensure that I configure the cluster correctly, and the overlay network (flannel).

I've attempted to establish the no_proxy environment variable (centos 7).

The way that i tried this was as follows was to update /etc/profile.d/proxy.sh as follows:

printf -v lan '%s,' "10.93.98.204","10.93.98.23","10.93.98.36","10.93.103.236","10.93.97.123","10.93.97.202"
printf -v service '%s,' 10.244.1..255.1..255
export no_proxy="$lan%,,$service%,,127.0.0.1";
#export no_proxy="$lan%,,10.244.0.0/16,127.0.0.1";
export NO_PROXY=$no_proxy

However, this approach results in a massive string ($no_proxy) that far exceeds the maximum length within the Linux environment.

I've also tried using the pod-network-cidr in the no_proxy (10.244.0.0/16 - commented out in the above)

Two questions:
- What is the proper way to deal with this warning (WARNING HTTPProxyCIDR)?
- How can I set no_proxy so that my flannel network overlay works and my cluster works

kubernetes kubeadm

share|improve this question

edited Apr 9 at 23:31

Rico

32.6k1010 gold badges5656 silver badges7777 bronze badges

asked Mar 27 at 12:28

Dave SargradDave Sargrad

1311 silver badge77 bronze badges

add a comment | 

I'm relatively new to k8s. I have now set up a cluster several times to ensure that I understand the process. I have struggled with networking a bit. I am currently initializing as follows:

kubeadm init --apiserver-advertise-address=10.93.98.204 --pod-network-cidr=10.244.0.0/16

In response to this I see the following warning:

[WARNING HTTPProxyCIDR]: connection to "10.96.0.0/12" uses proxy "http://proxy.corp.sensis. com:3128". This may lead to malfunctional cluster setup. Make sure that Pod and Services IP ranges specified correctly as exceptions in proxy configuration

Amongst other things, I am trying to ensure that I configure the cluster correctly, and the overlay network (flannel).

I've attempted to establish the no_proxy environment variable (centos 7).

The way that i tried this was as follows was to update /etc/profile.d/proxy.sh as follows:

printf -v lan '%s,' "10.93.98.204","10.93.98.23","10.93.98.36","10.93.103.236","10.93.97.123","10.93.97.202"
printf -v service '%s,' 10.244.1..255.1..255
export no_proxy="$lan%,,$service%,,127.0.0.1";
#export no_proxy="$lan%,,10.244.0.0/16,127.0.0.1";
export NO_PROXY=$no_proxy

However, this approach results in a massive string ($no_proxy) that far exceeds the maximum length within the Linux environment.

I've also tried using the pod-network-cidr in the no_proxy (10.244.0.0/16 - commented out in the above)

Two questions:
- What is the proper way to deal with this warning (WARNING HTTPProxyCIDR)?
- How can I set no_proxy so that my flannel network overlay works and my cluster works

kubernetes kubeadm

share|improve this question

edited Apr 9 at 23:31

Rico

32.6k1010 gold badges5656 silver badges7777 bronze badges

asked Mar 27 at 12:28

Dave SargradDave Sargrad

1311 silver badge77 bronze badges

kubeadm init --apiserver-advertise-address=10.93.98.204 --pod-network-cidr=10.244.0.0/16

[WARNING HTTPProxyCIDR]: connection to "10.96.0.0/12" uses proxy "http://proxy.corp.sensis. com:3128". This may lead to malfunctional cluster setup. Make sure that Pod and Services IP ranges specified correctly as exceptions in proxy configuration

printf -v lan '%s,' "10.93.98.204","10.93.98.23","10.93.98.36","10.93.103.236","10.93.97.123","10.93.97.202"
printf -v service '%s,' 10.244.1..255.1..255
export no_proxy="$lan%,,$service%,,127.0.0.1";
#export no_proxy="$lan%,,10.244.0.0/16,127.0.0.1";
export NO_PROXY=$no_proxy

kubernetes kubeadm

kubernetes kubeadm

share|improve this question

edited Apr 9 at 23:31

Rico

32.6k1010 gold badges5656 silver badges7777 bronze badges

asked Mar 27 at 12:28

Dave SargradDave Sargrad

1311 silver badge77 bronze badges

share|improve this question

edited Apr 9 at 23:31

Rico

32.6k1010 gold badges5656 silver badges7777 bronze badges

asked Mar 27 at 12:28

Dave SargradDave Sargrad

1311 silver badge77 bronze badges

edited Apr 9 at 23:31

Rico

32.6k1010 gold badges5656 silver badges7777 bronze badges

edited Apr 9 at 23:31

Rico

32.6k1010 gold badges5656 silver badges7777 bronze badges

asked Mar 27 at 12:28

Dave SargradDave Sargrad

1311 silver badge77 bronze badges

asked Mar 27 at 12:28

Dave SargradDave Sargrad

1311 silver badge77 bronze badges

1 Answer
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The no_proxy/NO_PROXY environment variables should be the way to go. However, you don't need to add every single IP to the string you can just add the whole subnet. Also, looks like you are missing 10.96.0.0/12 from the list.

For example (assuming 10.93.98.0/24 is your LAN subnet):

export no_proxy="10.96.0.0/12,10.93.98.0/24,10.244.0.0/16,127.0.0.1"

Also, make sure Docker noProxy is configured if you are using Docker.

share|improve this answer

answered Apr 10 at 0:43

RicoRico

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1

The no_proxy/NO_PROXY environment variables should be the way to go. However, you don't need to add every single IP to the string you can just add the whole subnet. Also, looks like you are missing 10.96.0.0/12 from the list.

For example (assuming 10.93.98.0/24 is your LAN subnet):

export no_proxy="10.96.0.0/12,10.93.98.0/24,10.244.0.0/16,127.0.0.1"

Also, make sure Docker noProxy is configured if you are using Docker.

share|improve this answer

answered Apr 10 at 0:43

RicoRico

32.6k1010 gold badges5656 silver badges7777 bronze badges

add a comment | 

1

The no_proxy/NO_PROXY environment variables should be the way to go. However, you don't need to add every single IP to the string you can just add the whole subnet. Also, looks like you are missing 10.96.0.0/12 from the list.

For example (assuming 10.93.98.0/24 is your LAN subnet):

export no_proxy="10.96.0.0/12,10.93.98.0/24,10.244.0.0/16,127.0.0.1"

Also, make sure Docker noProxy is configured if you are using Docker.

share|improve this answer

answered Apr 10 at 0:43

RicoRico

32.6k1010 gold badges5656 silver badges7777 bronze badges

add a comment | 

The no_proxy/NO_PROXY environment variables should be the way to go. However, you don't need to add every single IP to the string you can just add the whole subnet. Also, looks like you are missing 10.96.0.0/12 from the list.

For example (assuming 10.93.98.0/24 is your LAN subnet):

export no_proxy="10.96.0.0/12,10.93.98.0/24,10.244.0.0/16,127.0.0.1"

Also, make sure Docker noProxy is configured if you are using Docker.

share|improve this answer

answered Apr 10 at 0:43

RicoRico

32.6k1010 gold badges5656 silver badges7777 bronze badges

export no_proxy="10.96.0.0/12,10.93.98.0/24,10.244.0.0/16,127.0.0.1"

share|improve this answer

answered Apr 10 at 0:43

RicoRico

32.6k1010 gold badges5656 silver badges7777 bronze badges

answered Apr 10 at 0:43

RicoRico

32.6k1010 gold badges5656 silver badges7777 bronze badges

answered Apr 10 at 0:43

RicoRico

32.6k1010 gold badges5656 silver badges7777 bronze badges