mirror of https://github.com/k3s-io/k3s
94 lines
4.1 KiB
Bash
94 lines
4.1 KiB
Bash
#!/bin/bash
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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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# Create the overlay files for the salt tree. We create these in a separate
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# place so that we can blow away the rest of the salt configs on a kube-push and
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# re-apply these.
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mkdir -p /srv/salt-overlay/pillar
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cat <<EOF >/srv/salt-overlay/pillar/cluster-params.sls
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instance_prefix: '$(echo "$INSTANCE_PREFIX" | sed -e "s/'/''/g")'
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node_instance_prefix: '$(echo "$NODE_INSTANCE_PREFIX" | sed -e "s/'/''/g")'
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portal_net: '$(echo "$PORTAL_NET" | sed -e "s/'/''/g")'
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enable_cluster_monitoring: '$(echo "$ENABLE_CLUSTER_MONITORING" | sed -e "s/'/''/g")'
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enable_node_monitoring: '$(echo "$ENABLE_NODE_MONITORING" | sed -e "s/'/''/g")'
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enable_cluster_logging: '$(echo "$ENABLE_CLUSTER_LOGGING" | sed -e "s/'/''/g")'
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enable_node_logging: '$(echo "$ENABLE_NODE_LOGGING" | sed -e "s/'/''/g")'
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logging_destination: '$(echo "$LOGGING_DESTINATION" | sed -e "s/'/''/g")'
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elasticsearch_replicas: '$(echo "$ELASTICSEARCH_LOGGING_REPLICAS" | sed -e "s/'/''/g")'
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enable_cluster_dns: '$(echo "$ENABLE_CLUSTER_DNS" | sed -e "s/'/''/g")'
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dns_replicas: '$(echo "$DNS_REPLICAS" | sed -e "s/'/''/g")'
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dns_server: '$(echo "$DNS_SERVER_IP" | sed -e "s/'/''/g")'
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dns_domain: '$(echo "$DNS_DOMAIN" | sed -e "s/'/''/g")'
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admission_control: '$(echo "$ADMISSION_CONTROL" | sed -e "s/'/''/g")'
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EOF
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readonly BASIC_AUTH_FILE="/srv/salt-overlay/salt/kube-apiserver/basic_auth.csv"
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if [ ! -e "${BASIC_AUTH_FILE}" ]; then
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mkdir -p /srv/salt-overlay/salt/kube-apiserver
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(umask 077;
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echo "${KUBE_PASSWORD},${KUBE_USER},admin" > "${BASIC_AUTH_FILE}")
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fi
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# Generate and distribute a shared secret (bearer token) to
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# apiserver and the nodes so that kubelet and kube-proxy can
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# authenticate to apiserver.
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# This works on CoreOS, so it should work on a lot of distros.
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kubelet_token=$(cat /dev/urandom | base64 | tr -d "=+/" | dd bs=32 count=1 2> /dev/null)
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kube_proxy_token=$(cat /dev/urandom | base64 | tr -d "=+/" | dd bs=32 count=1 2> /dev/null)
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# Make a list of tokens and usernames to be pushed to the apiserver
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mkdir -p /srv/salt-overlay/salt/kube-apiserver
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readonly KNOWN_TOKENS_FILE="/srv/salt-overlay/salt/kube-apiserver/known_tokens.csv"
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(umask u=rw,go= ; echo "$kubelet_token,kubelet,kubelet" > $KNOWN_TOKENS_FILE ;
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echo "$kube_proxy_token,kube_proxy,kube_proxy" >> $KNOWN_TOKENS_FILE)
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mkdir -p /srv/salt-overlay/salt/kubelet
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kubelet_auth_file="/srv/salt-overlay/salt/kubelet/kubernetes_auth"
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(umask u=rw,go= ; echo "{\"BearerToken\": \"$kubelet_token\", \"Insecure\": true }" > $kubelet_auth_file)
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mkdir -p /srv/salt-overlay/salt/kube-proxy
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kube_proxy_kubeconfig_file="/srv/salt-overlay/salt/kube-proxy/kubeconfig"
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cat > "${kube_proxy_kubeconfig_file}" <<EOF
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apiVersion: v1
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kind: Config
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users:
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- name: kube-proxy
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user:
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token: ${kube_proxy_token}
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clusters:
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- name: local
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cluster:
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insecure-skip-tls-verify: true
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contexts:
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- context:
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cluster: local
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user: kube-proxy
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name: service-account-context
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current-context: service-account-context
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EOF
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# Generate tokens for other "service accounts". Append to known_tokens.
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#
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# NB: If this list ever changes, this script actually has to
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# change to detect the existence of this file, kill any deleted
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# old tokens and add any new tokens (to handle the upgrade case).
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local -r service_accounts=("system:scheduler" "system:controller_manager" "system:logging" "system:monitoring" "system:dns")
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for account in "${service_accounts[@]}"; do
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token=$(dd if=/dev/urandom bs=128 count=1 2>/dev/null | base64 | tr -d "=+/" | dd bs=32 count=1 2>/dev/null)
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echo "${token},${account},${account}" >> "${KNOWN_TOKENS_FILE}"
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done
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