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Override hostname with instance name

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This commit is contained in:
Julie Qi 2020-08-26 17:57:38 -07:00
parent 5ea0b254a1
commit 16f85883c4
1 changed files with 15 additions and 2 deletions
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17
cluster/gce/windows/k8s-node-setup.psm1
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@ -1143,9 +1143,20 @@ function Start-WorkerServices {
$kubelet_args_str = ${kube_env}['KUBELET_ARGS']
$kubelet_args = $kubelet_args_str.Split(" ")
Log-Output "kubelet_args from metadata: ${kubelet_args}"
# To join GCE instances to AD, we need to shorten their names, as NetBIOS name
# must be <= 15 characters, and GKE generated names are longer than that.
# To perform the join in an automated way, it's preferable to apply the rename
# and domain join in the GCESysprep step. However, after sysprep is complete
# and the machine restarts, kubelet bootstrapping should not use the shortened
# computer name, and instead use the instance's name by using --hostname-override,
# otherwise kubelet and kube-proxy will not be able to run properly.
$instance_name = "$(Get-InstanceMetadata 'name' | Out-String)"
$default_kubelet_args = @(`
"--pod-infra-container-image=${env:INFRA_CONTAINER}"
"--pod-infra-container-image=${env:INFRA_CONTAINER}",
"--hostname-override=${instance_name}"
)
$kubelet_args = ${default_kubelet_args} + ${kubelet_args}
if (-not (Test-NodeUsesAuthPlugin ${kube_env})) {
Log-Output 'Using bootstrap kubeconfig for authentication'
@ -1170,8 +1181,10 @@ function Start-WorkerServices {
# And also with various volumeMounts and "securityContext: privileged: true".
$default_kubeproxy_args = @(`
"--kubeconfig=${env:KUBEPROXY_KUBECONFIG}",
"--cluster-cidr=$(${kube_env}['CLUSTER_IP_RANGE'])"
"--cluster-cidr=$(${kube_env}['CLUSTER_IP_RANGE'])",
"--hostname-override=${instance_name}"
)
$kubeproxy_args = ${default_kubeproxy_args} + ${kubeproxy_args}
Log-Output "Final kubeproxy_args: ${kubeproxy_args}"