From c10251e7e419eeec27e81f18424234cb7c59dfe2 Mon Sep 17 00:00:00 2001 From: "Lubomir I. Ivanov" Date: Thu, 22 Nov 2018 04:18:09 +0200 Subject: [PATCH] kubeadm: remove kube-proxy workaround --- .../independent/troubleshooting-kubeadm.md | 40 ------------------- 1 file changed, 40 deletions(-) diff --git a/content/en/docs/setup/independent/troubleshooting-kubeadm.md b/content/en/docs/setup/independent/troubleshooting-kubeadm.md index c7f8c924498de..372240e5043ab 100644 --- a/content/en/docs/setup/independent/troubleshooting-kubeadm.md +++ b/content/en/docs/setup/independent/troubleshooting-kubeadm.md @@ -203,46 +203,6 @@ Error from server: Get https://10.19.0.41:10250/containerLogs/default/mysql-ddc6 systemctl restart kubelet ``` -## Services with externalTrafficPolicy=Local are not reachable - -On nodes where the hostname for the kubelet is overridden using the `--hostname-override` option, kube-proxy will default to treating 127.0.0.1 as the node IP, which results in rejecting connections for Services configured for `externalTrafficPolicy=Local`. This situation can be verified by checking the output of `kubectl -n kube-system logs `: - -```sh -W0507 22:33:10.372369 1 server.go:586] Failed to retrieve node info: nodes "ip-10-0-23-78" not found -W0507 22:33:10.372474 1 proxier.go:463] invalid nodeIP, initializing kube-proxy with 127.0.0.1 as nodeIP -``` - -A workaround for this is to modify the kube-proxy DaemonSet in the following way: - -```sh -kubectl -n kube-system patch --type json daemonset kube-proxy -p "$(cat <<'EOF' -[ - { - "op": "add", - "path": "/spec/template/spec/containers/0/env", - "value": [ - { - "name": "NODE_NAME", - "valueFrom": { - "fieldRef": { - "apiVersion": "v1", - "fieldPath": "spec.nodeName" - } - } - } - ] - }, - { - "op": "add", - "path": "/spec/template/spec/containers/0/command/-", - "value": "--hostname-override=${NODE_NAME}" - } -] -EOF -)" - -``` - ## `coredns` pods have `CrashLoopBackOff` or `Error` state If you have nodes that are running SELinux with an older version of Docker you might experience a scenario