76 lines
2.5 KiB
Bash
76 lines
2.5 KiB
Bash
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#!/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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# This script is intended to set up the files necessary to run a master.
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# It currently creates:
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# * The basic auth file for access to the kubernetes api server
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# * Service tokens for accessing the kubernetes api server
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# * The CA cert and keys for HTTPS access to the kubernetes api server
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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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create_token() {
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echo $(cat /dev/urandom | base64 | tr -d "=+/" | dd bs=32 count=1 2> /dev/null)
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}
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# Additional address of the API server to be added to the
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# list of Subject Alternative Names of the server TLS certificate
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# Should contain internal IP, i.e. IP:10.0.0.1 for 10.0.0.0/24 cluster IP range
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EXTRA_SANS=$1
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DATA_DIR=/srv/kubernetes
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# Files in /data are persistent across reboots, so we don't want to re-create the files if they already
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# exist, because the state is persistent in etcd too, and we don't want a conflict between "old" data in
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# etcd and "new" data that this script would create for apiserver. Therefore, if the file exist, skip it.
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if [[ ! -f ${DATA_DIR}/ca.crt ]]; then
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# Create HTTPS certificates
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groupadd -f -r kube-cert
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# hostname -I gets the ip of the node
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/make-ca-cert.sh $(hostname -I | awk '{print $1}') ${EXTRA_SANS}
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echo "Certificates created $(date)"
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else
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echo "Certificates already found, not recreating."
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fi
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if [[ ! -f ${DATA_DIR}/basic_auth.csv ]]; then
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# Create basic token authorization
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echo "admin,admin,admin" > ${DATA_DIR}/basic_auth.csv
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echo "basic_auth.csv created $(date)"
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else
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echo "basic_auth.csv already found, not recreating."
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fi
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if [[ ! -f ${DATA_DIR}/known_tokens.csv ]]; then
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# Create known tokens for service accounts
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echo "$(create_token),admin,admin" >> ${DATA_DIR}/known_tokens.csv
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echo "$(create_token),kubelet,kubelet" >> ${DATA_DIR}/known_tokens.csv
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echo "$(create_token),kube_proxy,kube_proxy" >> ${DATA_DIR}/known_tokens.csv
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echo "known_tokens.csv created $(date)"
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else
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echo "known_tokens.csv already found, not recreating."
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fi
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while true; do
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sleep 3600
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done
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