I want to set http/https proxy in pods and pass these variables via environment. However, I need to set no_proxy as well. Which values should I put it to not break somethings in k8s-inside-communication? As far as I know, there are some default services as "kubernetes.default.svc".
You could, as illustrated in OpenShift Container Platform bug 1467776, add .svc to no_proxy (as in PR 4678)
.svcdomain was added into service env file after installation.
[root@qe-gpei-etcd-sc-master-1 sysconfig]# grep NO_PROXY * -r
atomic-openshift-master:NO_PROXY=.cluster.local,.svc,qe-gpei-etcd-sc-master-1,172.30.0.0/16,10.128.0.0/14
docker:NO_PROXY='.cluster.local,.svc,qe-gpei-etcd-sc-master-1'
[root@qe-gpei-etcd-sc-master-1 sysconfig]# docker info |grep "No Proxy"
WARNING: bridge-nf-call-iptables is disabled
WARNING: bridge-nf-call-ip6tables is disabled
No Proxy: .cluster.local,.svc,qe-gpei-etcd-sc-master-1