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-rwxr-xr-xkubernetes/contrib/metallb-loadbalancer-inst/install-metallb-on-cluster.sh85
1 files changed, 85 insertions, 0 deletions
diff --git a/kubernetes/contrib/metallb-loadbalancer-inst/install-metallb-on-cluster.sh b/kubernetes/contrib/metallb-loadbalancer-inst/install-metallb-on-cluster.sh
new file mode 100755
index 0000000000..6e412a3688
--- /dev/null
+++ b/kubernetes/contrib/metallb-loadbalancer-inst/install-metallb-on-cluster.sh
@@ -0,0 +1,85 @@
+#!/bin/bash -e
+#
+# Copyright 2020 Samsung Electronics Co., Ltd.
+#
+# 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
+#
+# http://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.
+#
+
+usage() {
+cat << ==usage
+$0 Automatic configuration using external addresess from nodes
+$0 --help This message
+$0 -h This message
+$0 [cluster_ip1] ... [cluster_ipn] Cluster address or ip ranges
+==usage
+}
+
+
+find_nodes_with_external_addrs()
+{
+ local WORKER_NODES=$(kubectl get no -l node-role.kubernetes.io/worker=true -o jsonpath='{.items..metadata.name}')
+ for worker in $WORKER_NODES; do
+ local external_ip=$(kubectl get no $worker -o jsonpath='{.metadata.annotations.rke\.cattle\.io/external-ip }')
+ local internal_ip=$(kubectl get no $worker -o jsonpath='{.metadata.annotations.rke\.cattle\.io/internal-ip }')
+ if [ $internal_ip != $external_ip ]; then
+ echo $external_ip
+ fi
+ done
+}
+
+generate_config_map()
+{
+cat <<CNFEOF | kubectl apply -f -
+apiVersion: v1
+kind: ConfigMap
+metadata:
+ namespace: metallb-system
+ name: config
+data:
+ config: |
+ address-pools:
+ - name: default
+ protocol: layer2
+ addresses:
+$(for value in "$@"; do echo -e " - $value"; done)
+CNFEOF
+}
+
+generate_config_from_single_addr() {
+ generate_config_map "$1 - $1"
+}
+
+install_metallb() {
+ kubectl apply -f https://raw.githubusercontent.com/google/metallb/v0.9.3/manifests/namespace.yaml
+ kubectl apply -f https://raw.githubusercontent.com/google/metallb/v0.9.3/manifests/metallb.yaml
+ # Only when install
+ kubectl create secret generic -n metallb-system memberlist --from-literal=secretkey="$(openssl rand -base64 128)"
+}
+
+automatic_configuration() {
+ install_metallb
+ generate_config_from_single_addr $(find_nodes_with_external_addrs)
+}
+
+manual_configuration() {
+ install_metallb
+ generate_config_map $@
+}
+
+if [[ $# -eq 1 ]] && [[ $1 == "-h" || $1 == "--help" ]]; then
+ usage
+elif [[ $# -eq 0 ]]; then
+ automatic_configuration
+else
+ manual_configuration $@
+fi