130 lines
3.9 KiB
Bash
130 lines
3.9 KiB
Bash
#!/bin/sh
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# Copyright 2014 The Kubernetes Authors All rights reserved.
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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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. /etc/sysconfig/heat-params
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set -o errexit
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set -o nounset
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set -o pipefail
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if [ "$TLS_DISABLED" == "True" ]; then
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exit 0
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fi
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if [[ -z "${KUBE_NODE_PUBLIC_IP}" ]]; then
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KUBE_NODE_PUBLIC_IP=$(curl -s http://169.254.169.254/latest/meta-data/public-ipv4)
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fi
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if [[ -z "${KUBE_NODE_IP}" ]]; then
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KUBE_NODE_IP=$(curl -s http://169.254.169.254/latest/meta-data/local-ipv4)
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fi
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sans="IP:${KUBE_NODE_PUBLIC_IP},IP:${KUBE_NODE_IP}"
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if [ "${KUBE_NODE_PUBLIC_IP}" != "${KUBE_API_PUBLIC_ADDRESS}" ] \
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&& [ -n "${KUBE_API_PUBLIC_ADDRESS}" ]; then
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sans="${sans},IP:${KUBE_API_PUBLIC_ADDRESS}"
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fi
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if [ "${KUBE_NODE_IP}" != "${KUBE_API_PRIVATE_ADDRESS}" ] \
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&& [ -n "${KUBE_API_PRIVATE_ADDRESS}" ]; then
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sans="${sans},IP:${KUBE_API_PRIVATE_ADDRESS}"
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fi
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MASTER_HOSTNAME=${MASTER_HOSTNAME:-}
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if [[ -n "${MASTER_HOSTNAME}" ]]; then
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sans="${sans},DNS:${MASTER_HOSTNAME}"
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fi
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sans="${sans},IP:127.0.0.1"
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cert_dir=/srv/kubernetes
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cert_conf_dir=${cert_dir}/conf
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mkdir -p "$cert_dir"
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mkdir -p "$cert_conf_dir"
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CA_CERT=$cert_dir/ca.crt
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SERVER_CERT=$cert_dir/server.crt
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SERVER_CSR=$cert_dir/server.csr
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SERVER_KEY=$cert_dir/server.key
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#Get a token by user credentials and trust
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auth_json=$(cat << EOF
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{
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"auth": {
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"identity": {
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"methods": [
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"password"
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],
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"password": {
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"user": {
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"id": "$TRUSTEE_USER_ID",
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"password": "$TRUSTEE_PASSWORD"
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}
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}
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}
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}
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}
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EOF
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)
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content_type='Content-Type: application/json'
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url="$AUTH_URL/auth/tokens"
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USER_TOKEN=`curl -k -s -i -X POST -H "$content_type" -d "$auth_json" $url \
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| grep X-Subject-Token | awk '{print $2}' | tr -d '[[:space:]]'`
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# Get CA certificate for this cluster
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curl -k -X GET \
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-H "X-Auth-Token: $USER_TOKEN" \
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-H "OpenStack-API-Version: container-infra latest" \
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$MAGNUM_URL/certificates/$CLUSTER_UUID | python -c 'import sys, json; print json.load(sys.stdin)["pem"]' > ${CA_CERT}
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# Create config for server's csr
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cat > ${cert_conf_dir}/server.conf <<EOF
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[req]
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distinguished_name = req_distinguished_name
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req_extensions = req_ext
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prompt = no
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[req_distinguished_name]
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CN = kubernetes.invalid
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[req_ext]
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subjectAltName = ${sans}
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extendedKeyUsage = clientAuth,serverAuth
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EOF
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# Generate server's private key and csr
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openssl genrsa -out "${SERVER_KEY}" 4096
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chmod 400 "${SERVER_KEY}"
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openssl req -new -days 1000 \
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-key "${SERVER_KEY}" \
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-out "${SERVER_CSR}" \
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-reqexts req_ext \
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-config "${cert_conf_dir}/server.conf"
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# Send csr to Magnum to have it signed
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csr_req=$(python -c "import json; fp = open('${SERVER_CSR}'); print json.dumps({'cluster_uuid': '$CLUSTER_UUID', 'csr': fp.read()}); fp.close()")
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curl -k -X POST \
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-H "X-Auth-Token: $USER_TOKEN" \
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-H "OpenStack-API-Version: container-infra latest" \
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-H "Content-Type: application/json" \
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-d "$csr_req" \
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$MAGNUM_URL/certificates | python -c 'import sys, json; print json.load(sys.stdin)["pem"]' > ${SERVER_CERT}
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# Common certs and key are created for both etcd and kubernetes services.
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# Both etcd and kube user should have permission to access the certs and key.
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groupadd kube_etcd
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usermod -a -G kube_etcd etcd
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usermod -a -G kube_etcd kube
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chmod 550 "${cert_dir}"
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chown -R kube:kube_etcd "${cert_dir}"
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chmod 440 $SERVER_KEY
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