func/hack/configure.sh

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#!/usr/bin/env bash
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# https://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
# Configures the current cluster for use with Functions
#
set -o errexit
set -o nounset
set -o pipefail
DEFAULT_NAMESPACE=func
show_help() {
cat << EOF
Configure a local cluster for use with Functions.
Usage: $(basename "$0") <options>
-h, --help Display help
-n, --namespace The namespace to use for Functions (default: $DEFAULT_NAMESPACE)
EOF
}
main() {
local namespace="$DEFAULT_NAMESPACE"
local em=$(tput bold)$(tput setaf 2)
local me=$(tput sgr0)
parse_command_line "$@"
echo "${em}Configuring...${me}"
namespace
network
kourier_nodeport
default_domain
sleep 10
kubectl --namespace kourier-system get service kourier
echo "${em}DONE${me}"
}
parse_command_line() {
while :; do
case "${1:-}" in
-h|--help)
show_help
exit
;;
-n|--namespace)
if [[ -n "${2:-}" ]]; then
namespace="$2"
shift
else
echo "ERROR: '-n|--namespace' cannot be empty." >&2
show_help
exit 1
fi
;;
*)
break
;;
esac
done
}
namespace() {
echo "${em}① Namespace${me}"
kubectl create namespace "$namespace"
kubectl label namespace "$namespace" knative-eventing-injection=enabled
}
network() {
echo "${em}② Network${me}"
echo "Registering Kourier as ingress"
echo "Enabling subdomains"
cat <<EOF | kubectl apply -f -
apiVersion: v1
kind: ConfigMap
metadata:
name: config-network
namespace: knative-serving
data:
# Use Kourier for the networking layer
ingress.class: kourier.ingress.networking.knative.dev
# If there exists an annotation 'func.subdomain' on the service, use it
# instead of the default name.namespace
domainTemplate: |-
{{if index .Annotations "func.subdomain" -}}
{{- index .Annotations "func.subdomain" -}}
{{else -}}
{{- .Name}}.{{.Namespace -}}
{{end -}}
.{{.Domain}}
EOF
}
kourier_nodeport() {
echo "${em}③ Nodeport${me}"
echo 'Setting Kourier service to type NodePort'
# Patch for changing kourier to a NodePort for installations where a
# LoadBalancer is not available (for example local Kind clusters)
# kubectl patch -n kourier-system services/kourier -p "$(cat configure-kourier-nodeport.yaml)"
kubectl patch services/kourier \
--namespace kourier-system \
--type merge \
--patch '{
"spec": {
"ports": [
{
"name": "http2",
"nodePort": 30080,
"port": 80,
"protocol": "TCP",
"targetPort": 8080
},
{
"name": "https",
"nodePort": 30443,
"port": 443,
"protocol": "TCP",
"targetPort": 8443
}
],
"type": "NodePort"
}
}'
}
default_domain() {
echo "${em}④ Default Domains${me}"
cat <<EOF | kubectl apply -f -
apiVersion: v1
kind: ConfigMap
metadata:
name: config-domain
namespace: knative-serving
data:
example.com: |
selector:
func.domain: "example.com"
example.org: |
selector:
func.domain: "example.org"
# Default is local only.
svc.cluster.local: ""
EOF
}
main "$@"