152 lines
4.7 KiB
YAML
152 lines
4.7 KiB
YAML
#cloud-config
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write_files:
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- path: /etc/systemd/system/make-cert.service
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owner: "root:root"
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permissions: "0644"
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content: |
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[Unit]
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Description=Make TLS certificates
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[Service]
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Type=oneshot
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EnvironmentFile=/etc/sysconfig/heat-params
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ExecStart=/etc/sysconfig/make-cert.sh
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[Install]
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WantedBy=multi-user.target
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- path: /etc/sysconfig/make-cert.sh
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owner: "root:root"
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permissions: "0755"
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content: |
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#!/bin/bash
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# Parse the JSON response that contains the TLS certificate, and print
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# out the certificate content.
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function parse_json_response {
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json_response=$1
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# {..,"pem": "ABCD",..} -> ABCD
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key=$(echo "$json_response" | sed 's/^.*"pem": "\([^"]*\)".*$/\1/')
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# decode newline characters
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key=$(echo "$key" | sed 's/\\n/\n/g')
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echo "$key"
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}
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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_conf_dir=${KUBE_CERTS_PATH}/conf
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mkdir -p ${cert_conf_dir}
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CA_CERT=${KUBE_CERTS_PATH}/ca.pem
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SERVER_CERT=${KUBE_CERTS_PATH}/apiserver.pem
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SERVER_CSR=${KUBE_CERTS_PATH}/apiserver.pem
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SERVER_KEY=${KUBE_CERTS_PATH}/apiserver-key.pem
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#Get a token by user credentials and trust
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cat > auth.json << EOF
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{
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"auth": {
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"identity": {
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"methods": [
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"password"
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],
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"password": {
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"user": {
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"id": "$TRUSTEE_USER_ID",
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"password": "$TRUSTEE_PASSWORD"
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}
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}
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},
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"scope": {
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"OS-TRUST:trust": {
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"id": "$TRUST_ID"
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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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#trust is introduced in Keystone v3 version
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AUTH_URL=${AUTH_URL/v2.0/v3}
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USER_TOKEN=`curl -k -s -i -X POST -H "Content-Type: application/json" -d @auth.json \
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$AUTH_URL/auth/tokens | grep X-Subject-Token | awk '{print $2}'`
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rm -rf auth.json
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# Get CA certificate for this cluster
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ca_cert_json=$(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/$CLUSTER_UUID)
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parse_json_response "${ca_cert_json}" > ${CA_CERT}
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# Create config for server's csr
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cat > ${cert_conf_dir}/openssl.cnf <<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 = kube-apiserver
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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 "${SERVER_KEY}"
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openssl req -new -days 10000 \
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-key "${SERVER_KEY}" \
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-out "${SERVER_CSR}" \
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-reqexts req_ext \
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-config "${cert_conf_dir}/openssl.cnf"
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# encode newline (\n) characters
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csr=$(cat $SERVER_CSR | sed -e ':a' -e 'N' -e '$!ba' -e 's/\n/\\n/g')
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csr_req="{\"cluster_uuid\": \"$CLUSTER_UUID\", \"csr\": \"$csr\"}"
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# Send csr to Magnum to have it signed
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server_cert_json=$(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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$MAGNUM_URL/certificates)
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parse_json_response "${server_cert_json}" > ${SERVER_CERT}
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chmod 600 ${KUBE_CERTS_PATH}/*-key.pem
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# Certs will also be used by etcd service
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chown -R etcd:etcd ${KUBE_CERTS_PATH}
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