[release/v1.45] Add missing --resolv-conf to kubelet (#1388)

* Add missing --resolv-conf to kubelet

Signed-off-by: Artiom Diomin <[email protected]>

* Update fixtures

Signed-off-by: Artiom Diomin <[email protected]>

Author: kron4eg

pkg/userdata/flatcar/provider.go

@@ -246,6 +246,10 @@ systemd:
         contents: |
           [Service]
           EnvironmentFile=/etc/kubernetes/nodeip.conf
+      - name: resolv.conf
+        contents: |
+          [Service]
+          Environment="KUBELET_EXTRA_ARGS=--resolv-conf=/run/systemd/resolve/resolv.conf"
       - name: 40-download.conf
         contents: |
           [Unit]
@@ -514,6 +518,10 @@ coreos:
       content: |
         [Service]
         EnvironmentFile=/etc/kubernetes/nodeip.conf
+    - name: resolv.conf
+      content: |
+        [Service]
+        Environment="KUBELET_EXTRA_ARGS=--resolv-conf=/run/systemd/resolve/resolv.conf"
     - name: 40-download.conf
       content: |
         [Unit]

pkg/userdata/flatcar/testdata/cloud-init_v1.20.14.yaml

@@ -86,6 +86,10 @@ coreos:
       content: |
         [Service]
         EnvironmentFile=/etc/kubernetes/nodeip.conf
+    - name: resolv.conf
+      content: |
+        [Service]
+        Environment="KUBELET_EXTRA_ARGS=--resolv-conf=/run/systemd/resolve/resolv.conf"
     - name: 40-download.conf
       content: |
         [Unit]

pkg/userdata/flatcar/testdata/cloud-init_v1.21.8.yaml

@@ -86,6 +86,10 @@ coreos:
       content: |
         [Service]
         EnvironmentFile=/etc/kubernetes/nodeip.conf
+    - name: resolv.conf
+      content: |
+        [Service]
+        Environment="KUBELET_EXTRA_ARGS=--resolv-conf=/run/systemd/resolve/resolv.conf"
     - name: 40-download.conf
       content: |
         [Unit]

pkg/userdata/flatcar/testdata/cloud-init_v1.22.5.yaml

@@ -86,6 +86,10 @@ coreos:
       content: |
         [Service]
         EnvironmentFile=/etc/kubernetes/nodeip.conf
+    - name: resolv.conf
+      content: |
+        [Service]
+        Environment="KUBELET_EXTRA_ARGS=--resolv-conf=/run/systemd/resolve/resolv.conf"
     - name: 40-download.conf
       content: |
         [Unit]

pkg/userdata/flatcar/testdata/cloud-init_v1.23.0.yaml

@@ -86,6 +86,10 @@ coreos:
       content: |
         [Service]
         EnvironmentFile=/etc/kubernetes/nodeip.conf
+    - name: resolv.conf
+      content: |
+        [Service]
+        Environment="KUBELET_EXTRA_ARGS=--resolv-conf=/run/systemd/resolve/resolv.conf"
     - name: 40-download.conf
       content: |
         [Unit]

pkg/userdata/flatcar/testdata/containerd.yaml

@@ -71,6 +71,10 @@ coreos:
       content: |
         [Service]
         EnvironmentFile=/etc/kubernetes/nodeip.conf
+    - name: resolv.conf
+      content: |
+        [Service]
+        Environment="KUBELET_EXTRA_ARGS=--resolv-conf=/run/systemd/resolve/resolv.conf"
     - name: 40-download.conf
       content: |
         [Unit]