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45 lines
1.6 KiB
Bash
45 lines
1.6 KiB
Bash
#!/bin/bash
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# Copyright 2015 The Kubernetes Authors.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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set -o pipefail
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echo Checking for other nodes
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IP=""
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if [[ -n "${KUBERNETES_SERVICE_HOST}" ]]; then
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POD_NAMESPACE=${POD_NAMESPACE:-default}
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MYHOST=$(ip addr | grep 'state UP' -A2 | tail -n1 | awk '{print $2}' | cut -f1 -d'/')
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echo My host: ${MYHOST}
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URL="https://${KUBERNETES_SERVICE_HOST}:${KUBERNETES_SERVICE_PORT}/api/v1/namespaces/${POD_NAMESPACE}/endpoints/rethinkdb-driver"
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echo "Endpont url: ${URL}"
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echo "Looking for IPs..."
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token=$(cat /var/run/secrets/kubernetes.io/serviceaccount/token)
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# try to pick up first different ip from endpoints
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IP=$(curl -s ${URL} --cacert /var/run/secrets/kubernetes.io/serviceaccount/ca.crt --header "Authorization: Bearer ${token}" \
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| jq -s -r --arg h "${MYHOST}" '.[0].subsets | .[].addresses | [ .[].ip ] | map(select(. != $h)) | .[0]') || exit 1
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[[ "${IP}" == null ]] && IP=""
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fi
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if [[ -n "${IP}" ]]; then
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ENDPOINT="${IP}:29015"
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echo "Join to ${ENDPOINT}"
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exec rethinkdb --bind all --join ${ENDPOINT}
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else
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echo "Start single instance"
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exec rethinkdb --bind all
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fi
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