Set node IP on start of kubelet

This is a workaround for the bug described at kubernetes/kubernetes#68270, where nodes lose their IP address. A fix is supposed to be in 1.11.6, but this should overcome the issue for the time being.
cloudboss · Dec 17, 2018 · f77c5b7 · f77c5b7
1 parent 73e8999
commit f77c5b7
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diff --git a/keights/resources/usr/lib/systemd/system/keights-templatize-kubeadm-join-config.service b/keights/resources/usr/lib/systemd/system/keights-templatize-kubeadm-join-config.service
@@ -24,6 +24,10 @@ ExecStart=/bin/sh -c ' \
             --retry 10 \
             --retry-delay 2 \
             http://169.254.169.254/latest/meta-data/local-hostname` && \
+    myip=`curl -s \
+            --retry 10 \
+            --retry-delay 2 \
+            http://169.254.169.254/latest/meta-data/local-ipv4` && \
     /usr/bin/keights template \
       -t /usr/share/keights/kubeadm-join-config.yaml.template \
       -D /var/lib/kubeadm/config.yaml \
@@ -34,6 +38,7 @@ ExecStart=/bin/sh -c ' \
       -v ImageRepository=${KEIGHTS_IMAGE_REPOSITORY} \
       -v NodeLabels=${KEIGHTS_NODE_LABELS} \
       -v NodeName=$${node_name} \
+      -v MyIP=$${myip} \
 '
 
 [Install]

diff --git a/keights/resources/usr/share/keights/kubeadm-init-config.yaml.template b/keights/resources/usr/share/keights/kubeadm-init-config.yaml.template
@@ -163,6 +163,7 @@ nodeRegistration:
   kubeletExtraArgs:
     cloud-provider: aws
     pod-infra-container-image: {{ .ImageRepository }}/pause:3.1
+    node-ip: {{ .MyIP }}
   name: {{ .NodeName }}
   taints:
   - effect: NoSchedule

diff --git a/keights/resources/usr/share/keights/kubeadm-join-config.yaml.template b/keights/resources/usr/share/keights/kubeadm-join-config.yaml.template
@@ -11,4 +11,5 @@ nodeRegistration:
     cloud-provider: aws
     pod-infra-container-image: {{ .ImageRepository }}/pause:3.1
     node-labels: kubernetes.io/role=node,node-role.kubernetes.io/node=,{{ range $label := .NodeLabels }}{{ $label }},{{ end }}
+    node-ip: {{ .MyIP }}
   name: {{ .NodeName }}