Document kube-proxy patch that modifies config in init container

kubernetes · Jul 28, 2018 · bd62d1b · bd62d1b
1 parent 97e3617
commit bd62d1b
Showing 1 changed file with 48 additions and 13 deletions.
diff --git a/content/en/docs/setup/independent/troubleshooting-kubeadm.md b/content/en/docs/setup/independent/troubleshooting-kubeadm.md
@@ -208,34 +208,69 @@ W0507 22:33:10.372369       1 server.go:586] Failed to retrieve node info: nodes
 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:
+A workaround for this is to apply, in order, the following patches to the kube-proxy DaemonSet:
 
+Patch 1
 ```sh
 kubectl -n kube-system patch --type json daemonset kube-proxy -p "$(cat <<'EOF'
 [
     {
-        "op": "add",
-        "path": "/spec/template/spec/containers/0/env",
+        "op": "add"
+        "path": "/spec/template/spec/volumes/-",
         "value": [
             {
-                "name": "NODE_NAME",
-                "valueFrom": {
-                    "fieldRef": {
-                        "apiVersion": "v1",
-                        "fieldPath": "spec.nodeName"
-                    }
-                }
+                "name": "shared-data",
+                "mountPath": "/shared-data"
             }
         ]
     },
     {
-        "op": "add",
-        "path": "/spec/template/spec/containers/0/command/-",
-        "value": "--hostname-override=${NODE_NAME}"
+        "op": "add"
+        "path": "/spec/template/spec/containers/0/volumeMounts/-",
+        "value": [
+            {
+                "name": "shared-data",
+                "mountPath": "/shared-data"
+            }
+        ]
+    },
+    {
+        "op": "replace",
+        "path": "/spec/template/spec/containers/0/command/1",
+        "value": "--config=/shared-data/config.conf"
     }
 ]
 EOF
 )"
+```
 
+Patch 2
+```sh
+kubectl -n kube-system patch --type strategic daemonset kube-proxy -p "$(cat <<'EOF'
+spec:
+  template:
+    spec:
+      initContainers:
+      - command:
+        - 'sh'
+        - '-c'
+        - '/bin/sed "s/hostnameOverride: \"\"/hostnameOverride: $(NODE_NAME)/" /var/lib/kube-proxy/config.conf > /shared-data/config.conf'
+        env:
+        - name: NODE_NAME
+          valueFrom:
+            fieldRef:
+              apiVersion: v1
+              fieldPath: spec.nodeName
+        image: k8s.gcr.io/kube-proxy-amd64:v1.11.1
+        imagePullPolicy: IfNotPresent
+        name: update-config-file
+        volumeMounts:
+        - mountPath: /var/lib/kube-proxy
+          name: kube-proxy
+        - mountPath: /shared-data
+          name: shared-data
+EOF
+)"
 ```
+
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