Container Infrastructure Management Service for OpenStack
You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
 
 
 
 
 

149 lines
4.1 KiB

#!/bin/sh
# Copyright 2014 The Kubernetes Authors All rights reserved.
#
# 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.
. /etc/sysconfig/heat-params
set -o errexit
set -o nounset
set -o pipefail
if [ "$TLS_DISABLED" == "True" ]; then
exit 0
fi
if [ "$VERIFY_CA" == "True" ]; then
VERIFY_CA=""
else
VERIFY_CA="-k"
fi
if [ -z "${KUBE_NODE_IP}" ]; then
KUBE_NODE_IP=$(curl -s http://169.254.169.254/latest/meta-data/local-ipv4)
fi
cert_dir=/etc/kubernetes/certs
mkdir -p "$cert_dir"
CA_CERT=$cert_dir/ca.crt
function generate_certificates {
_CERT=$cert_dir/${1}.crt
_CSR=$cert_dir/${1}.csr
_KEY=$cert_dir/${1}.key
_CONF=$2
#Get a token by user credentials and trust
auth_json=$(cat << EOF
{
"auth": {
"identity": {
"methods": [
"password"
],
"password": {
"user": {
"id": "$TRUSTEE_USER_ID",
"password": "$TRUSTEE_PASSWORD"
}
}
}
}
}
EOF
)
content_type='Content-Type: application/json'
url="$AUTH_URL/auth/tokens"
USER_TOKEN=`curl $VERIFY_CA -s -i -X POST -H "$content_type" -d "$auth_json" $url \
| grep -i X-Subject-Token | awk '{print $2}' | tr -d '[[:space:]]'`
# Get CA certificate for this cluster
curl $VERIFY_CA -X GET \
-H "X-Auth-Token: $USER_TOKEN" \
-H "OpenStack-API-Version: container-infra latest" \
$MAGNUM_URL/certificates/$CLUSTER_UUID | python -c 'import sys, json; print json.load(sys.stdin)["pem"]' > $CA_CERT
# Generate client's private key and csr
openssl genrsa -out "${_KEY}" 4096
chmod 400 "${_KEY}"
openssl req -new -days 1000 \
-key "${_KEY}" \
-out "${_CSR}" \
-reqexts req_ext \
-config "${_CONF}"
# Send csr to Magnum to have it signed
csr_req=$(python -c "import json; fp = open('${_CSR}'); print json.dumps({'cluster_uuid': '$CLUSTER_UUID', 'csr': fp.read()}); fp.close()")
curl $VERIFY_CA -X POST \
-H "X-Auth-Token: $USER_TOKEN" \
-H "OpenStack-API-Version: container-infra latest" \
-H "Content-Type: application/json" \
-d "$csr_req" \
$MAGNUM_URL/certificates | python -c 'import sys, json; print json.load(sys.stdin)["pem"]' > ${_CERT}
}
#Kubelet Certs
INSTANCE_NAME=$(hostname --short | sed 's/\.novalocal//')
HOSTNAME=$(hostname)
cat > ${cert_dir}/kubelet.conf <<EOF
[req]
distinguished_name = req_distinguished_name
req_extensions = req_ext
prompt = no
[req_distinguished_name]
CN = system:node:${INSTANCE_NAME}
O=system:nodes
OU=OpenStack/Magnum
C=US
ST=TX
L=Austin
[req_ext]
subjectAltName = IP:${KUBE_NODE_IP},DNS:${INSTANCE_NAME},DNS:${HOSTNAME}
keyUsage=critical,digitalSignature,keyEncipherment
extendedKeyUsage=clientAuth,serverAuth
EOF
#kube-proxy Certs
cat > ${cert_dir}/proxy.conf <<EOF
[req]
distinguished_name = req_distinguished_name
req_extensions = req_ext
prompt = no
[req_distinguished_name]
CN = system:kube-proxy
O=system:node-proxier
OU=OpenStack/Magnum
C=US
ST=TX
L=Austin
[req_ext]
keyUsage=critical,digitalSignature,keyEncipherment
extendedKeyUsage=clientAuth
EOF
generate_certificates kubelet ${cert_dir}/kubelet.conf
generate_certificates proxy ${cert_dir}/proxy.conf
# Common certs and key are created for both etcd and kubernetes services.
# Both etcd and kube user should have permission to access the certs and key.
groupadd kube_etcd
usermod -a -G kube_etcd etcd
usermod -a -G kube_etcd kube
chmod 550 "${cert_dir}"
chown -R kube:kube_etcd "${cert_dir}"
chmod 440 ${cert_dir}/kubelet.key
chmod 440 ${cert_dir}/proxy.key