From 5b0c165dc8297967bd323e793acf9d086bb25c20 Mon Sep 17 00:00:00 2001
From: Ryan Richard <richardry@vmware.com>
Date: Tue, 28 Jun 2022 12:44:41 -0700
Subject: [PATCH] fix usage of base64 in hack script

---
 hack/prepare-supervisor-on-kind.sh | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/hack/prepare-supervisor-on-kind.sh b/hack/prepare-supervisor-on-kind.sh
index 6a573b1c..a56e5970 100755
--- a/hack/prepare-supervisor-on-kind.sh
+++ b/hack/prepare-supervisor-on-kind.sh
@@ -254,6 +254,13 @@ EOF
     --dry-run=client --output yaml | kubectl apply -f -
 fi
 
+if [[ "$OSTYPE" == "darwin"* ]]; then
+  certificateAuthorityData=$(cat "$root_ca_crt_path" | base64)
+else
+  # Linux base64 requires an extra flag to keep the output on one line.
+  certificateAuthorityData=$(cat "$root_ca_crt_path" | base64 -w 0)
+fi
+
 # Make a JWTAuthenticator which respects JWTs from the Supervisor's issuer.
 # The issuer URL must be accessible from within the cluster for OIDC discovery.
 cat <<EOF | kubectl apply -f -
@@ -265,7 +272,7 @@ spec:
   issuer: $issuer
   audience: $audience
   tls:
-    certificateAuthorityData: $(cat "$root_ca_crt_path" | base64)
+    certificateAuthorityData: $certificateAuthorityData
 EOF
 
 echo "Waiting for JWTAuthenticator to initialize..."