diff options
| -rwxr-xr-x | kubernetes/contrib/metallb-loadbalancer-inst/install-metallb-on-cluster.sh | 85 |
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 |