Kubernetes master节点的高可用配置
#!/bin/bash# Copyright
2014 The Kubernetes Authors.
#
# 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.
## Create etcd.conf, etcd.service, and start etcd service.
ETCD_NAME=`hostname`
ETCD_DATA_DIR=/var/lib/etcd
ETCD_CONF_DIR=/etc/etcd
ETCD_CLUSTER='k8s-master1=http://192.168.0.107:2380,k8s-master2=http://192.168.0.108:2380,k8s-master3=http://192.168.0.109:2380'
ETCD_LISTEN_IP=`ip addr show enp0s3 |grep -w 'inet' |awk -F " " '{print $2}' |awk -F "/" '{print $1}'`
#useradd etcd
mkdir -p $ETCD_DATA_DIR $ETCD_CONF_DIR
chown -R etcd.etcd $ETCD_DATA_DIR
cat <<EOF >/etc/etcd/etcd.conf
#
ETCD_NAME=${ETCD_NAME}
ETCD_DATA_DIR="/var/lib/etcd/default.etcd"
#ETCD_WAL_DIR=""
ETCD_SNAPSHOT_COUNT="10000"
ETCD_HEARTBEAT_INTERVAL="100"
ETCD_ELECTION_TIMEOUT="1000"
ETCD_LISTEN_PEER_URLS="http://${ETCD_LISTEN_IP}:2380"
ETCD_LISTEN_CLIENT_URLS="http://${ETCD_LISTEN_IP}:2379"
ETCD_MAX_SNAPSHOTS="5"
ETCD_MAX_WALS="5"
#ETCD_CORS=""
#
#
ETCD_INITIAL_ADVERTISE_PEER_URLS="http://${ETCD_LISTEN_IP}:2380"
# if you use different ETCD_NAME (e.g. test), set ETCD_INITIAL_CLUSTER value for this name, i.e. "test=http://..."
ETCD_INITIAL_CLUSTER="${ETCD_CLUSTER}"
ETCD_INITIAL_CLUSTER_STATE="new"
ETCD_INITIAL_CLUSTER_TOKEN="etcd-cluster"
ETCD_ADVERTISE_CLIENT_URLS="http://${ETCD_LISTEN_IP}:2379"
#ETCD_DISCOVERY=""
#ETCD_DISCOVERY_SRV=""
#ETCD_DISCOVERY_FALLBACK="proxy"
#ETCD_DISCOVERY_PROXY=""
#ETCD_STRICT_RECONFIG_CHECK="false"
#ETCD_AUTO_COMPACTION_RETENTION="0"
#
#
#ETCD_PROXY="off"
#ETCD_PROXY_FAILURE_WAIT="5000"
#ETCD_PROXY_REFRESH_INTERVAL="30000"
#ETCD_PROXY_DIAL_TIMEOUT="1000"
#ETCD_PROXY_WRITE_TIMEOUT="5000"
#ETCD_PROXY_READ_TIMEOUT="0"
#
#
#ETCD_CERT_FILE=""
#ETCD_KEY_FILE=""
#ETCD_CLIENT_CERT_AUTH="false"
#ETCD_TRUSTED_CA_FILE=""
#ETCD_AUTO_TLS="false"
#ETCD_PEER_CERT_FILE=""
#ETCD_PEER_KEY_FILE=""
#ETCD_PEER_CLIENT_CERT_AUTH="false"
#ETCD_PEER_TRUSTED_CA_FILE=""
#ETCD_PEER_AUTO_TLS="false"
#
#
#ETCD_DEBUG="false"
# examples for -log-package-levels etcdserver=WARNING,security=DEBUG
#ETCD_LOG_PACKAGE_LEVELS=""
EOF
cat <<EOF >//usr/lib/systemd/system/etcd.service
Description=Etcd Server
After=network.target
After=network-online.target
Wants=network-online.target
Type=notify
WorkingDirectory=/var/lib/etcd/
EnvironmentFile=-/etc/etcd/etcd.conf
User=etcd
# set GOMAXPROCS to number of processors
#ExecStart=/bin/bash -c "GOMAXPROCS=$(nproc) /usr/local/bin/etcd --name=\"${ETCD_NAME}\" --data-dir=\"${ETCD_DATA_DIR}\" --listen-client-urls=\"${ETCD_LISTEN_CLIENT_URLS}\""
ExecStart=/bin/bash -c "GOMAXPROCS=$(nproc) /usr/local/bin/etcd"
Restart=on-failure
LimitNOFILE=65536
WantedBy=multi-user.target
EOF
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