This message was deleted.

Looks like the white space mattered. This worked

UserData: pulumi.StringPtr(base64.StdEncoding.EncodeToString([]byte(`MIME-Version: 1.0
Content-Type: multipart/mixed; boundary="==MYBOUNDARY=="

--==MYBOUNDARY==
Content-Type: text/x-shellscript; charset="us-ascii"

#!/bin/bash
set -ex

BOOTSTRAP_SH=/etc/eks/bootstrap.sh
BOOTSTRAP_USE_MAX_PODS_SEARCH="USE_MAX_PODS:-true"
KUBELET_CONFIG=/etc/kubernetes/kubelet/kubelet-config.json
# MAX_PODS=58

# search for the string to be replaced by sed and return a non-zero exit code if not found. This is used for safety in case the bootstrap.sh
# script gets changed in a way that is no longer compatible with our USE_MAX_PODS replacement command.
grep -q $BOOTSTRAP_USE_MAX_PODS_SEARCH $BOOTSTRAP_SH

# set the default for USE_MAX_PODS to false so that the maxPods value set in KUBELET_CONFIG will be honored
sed -i"" "s/$BOOTSTRAP_USE_MAX_PODS_SEARCH/USE_MAX_PODS:-false/" $BOOTSTRAP_SH

--==MYBOUNDARY==--`))),
		})