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ansible/kubespray/roles/etcd/templates/make-ssl-etcd.sh.j2

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+#!/bin/bash
+
+# Author: Smana smainklh@gmail.com
+#
+# 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.
+
+set -o errexit
+set -o pipefail
+usage()
+{
+    cat << EOF
+Create self signed certificates
+
+Usage : $(basename $0) -f <config> [-d <ssldir>]
+      -h | --help         : Show this message
+      -f | --config       : Openssl configuration file
+      -d | --ssldir       : Directory where the certificates will be installed
+
+               ex :
+               $(basename $0) -f openssl.conf -d /srv/ssl
+EOF
+}
+
+# Options parsing
+while (($#)); do
+    case "$1" in
+        -h | --help)   usage;   exit 0;;
+        -f | --config) CONFIG=${2}; shift 2;;
+        -d | --ssldir) SSLDIR="${2}"; shift 2;;
+        *)
+            usage
+            echo "ERROR : Unknown option"
+            exit 3
+        ;;
+    esac
+done
+
+if [ -z ${CONFIG} ]; then
+    echo "ERROR: the openssl configuration file is missing. option -f"
+    exit 1
+fi
+if [ -z ${SSLDIR} ]; then
+    SSLDIR="/etc/ssl/etcd"
+fi
+
+tmpdir=$(mktemp -d /tmp/etcd_cacert.XXXXXX)
+trap 'rm -rf "${tmpdir}"' EXIT
+cd "${tmpdir}"
+
+mkdir -p "${SSLDIR}"
+
+# Root CA
+if [ -e "$SSLDIR/ca-key.pem" ]; then
+    # Reuse existing CA
+    cp $SSLDIR/{ca.pem,ca-key.pem} .
+else
+    openssl genrsa -out ca-key.pem {{certificates_key_size}} > /dev/null 2>&1
+    openssl req -x509 -new -nodes -key ca-key.pem -days {{certificates_duration}} -out ca.pem -subj "/CN=etcd-ca" > /dev/null 2>&1
+fi
+
+# ETCD member
+if [ -n "$MASTERS" ]; then
+    for host in $MASTERS; do
+        cn="${host%%.*}"
+        # Member key
+        openssl genrsa -out member-${host}-key.pem {{certificates_key_size}} > /dev/null 2>&1
+        openssl req -new -key member-${host}-key.pem -out member-${host}.csr -subj "/CN=etcd-member-${cn}" -config ${CONFIG} > /dev/null 2>&1
+        openssl x509 -req -in member-${host}.csr -CA ca.pem -CAkey ca-key.pem -CAcreateserial -out member-${host}.pem -days {{certificates_duration}} -extensions ssl_client -extfile ${CONFIG} > /dev/null 2>&1
+
+        # Admin key
+        openssl genrsa -out admin-${host}-key.pem {{certificates_key_size}} > /dev/null 2>&1
+        openssl req -new -key admin-${host}-key.pem -out admin-${host}.csr -subj "/CN=etcd-admin-${cn}" > /dev/null 2>&1
+        openssl x509 -req -in admin-${host}.csr -CA ca.pem -CAkey ca-key.pem -CAcreateserial -out admin-${host}.pem -days {{certificates_duration}} -extensions ssl_client  -extfile ${CONFIG} > /dev/null 2>&1
+    done
+fi
+
+# Node keys
+if [ -n "$HOSTS" ]; then
+    for host in $HOSTS; do
+        cn="${host%%.*}"
+        openssl genrsa -out node-${host}-key.pem {{certificates_key_size}} > /dev/null 2>&1
+        openssl req -new -key node-${host}-key.pem -out node-${host}.csr -subj "/CN=etcd-node-${cn}" > /dev/null 2>&1
+        openssl x509 -req -in node-${host}.csr -CA ca.pem -CAkey ca-key.pem -CAcreateserial -out node-${host}.pem -days {{certificates_duration}} -extensions ssl_client  -extfile ${CONFIG} > /dev/null 2>&1
+    done
+fi
+
+# Install certs
+if [ -e "$SSLDIR/ca-key.pem" ]; then
+    # No pass existing CA
+    rm -f ca.pem ca-key.pem
+fi
+
+mv *.pem ${SSLDIR}/