一键部署etcd集群管理脚本

一、编写脚本

 1 #!/bin/sh
 2 # 安装
 3 # ./run.sh etcd03 etcd01=http://192.168.2.44:2380,etcd02=http://192.168.2.45:2380,etcd03=http://192.168.2.46:2380
 4
 5 etcd --version
 6 if [[ $? -eq 0 ]];
 7     then
 8         echo 'etcd exists, exit!'
 9         exit
10     else
11         yum -y  install etcd
12 fi
13
14
15 export HOST=$(ifconfig eth0 | grep 'inet'| grep -v '127.0.0.1' | cut -d: -f2 | awk '{ print $2}')
16 echo $HOST
17
18 tee /etc/etcd/etcd.conf <<-'EOF'
19 ETCD_NAME="$1"
20 ETCD_DATA_DIR="/var/lib/etcd/$1"
21 ETCD_LISTEN_PEER_URLS="http://$HOST:2380"
22 ETCD_LISTEN_CLIENT_URLS="http://$HOST:2379,http://127.0.0.1:2379"
23 ETCD_INITIAL_ADVERTISE_PEER_URLS="http://$HOST:2380"
24 ETCD_ADVERTISE_CLIENT_URLS="http://$HOST:2379"
25 ETCD_INITIAL_CLUSTER_STATE="new"
26 ETCD_INITIAL_CLUSTER_TOKEN="etcd-cluster1"
27 ETCD_INITIAL_CLUSTER="$2"
28 EOF
29
30 # etcd01=http://192.168.2.44:2380,etcd02=http://192.168.2.45:2380,etcd03=http://192.168.2.46:2380
31 # 替换掉$HOST及$1
32 sed -i "s%\$HOST%"$HOST"%g"  /etc/etcd/etcd.conf
33 sed -i "s%\$1%"$1"%g"  /etc/etcd/etcd.conf
34 sed -i "s%\$2%"$2"%g"  /etc/etcd/etcd.conf
35
36 tee  /usr/lib/systemd/system/etcd.service <<-'EOF'
37 [Unit]
38 Description=Etcd Server
39 After=network.target
40 After=network-online.target
41 Wants=network-online.target
42
43 [Service]
44 Type=notify
45 WorkingDirectory=/var/lib/etcd/
46 EnvironmentFile=/etc/etcd/etcd.conf
47 User=etcd
48 # set GOMAXPROCS to number of processors
49 ExecStart=/bin/bash -c "GOMAXPROCS=$(nproc) /usr/bin/etcd --name=\"${ETCD_NAME}\" --data-dir=\"${ETCD_DATA_DIR}\" --listen-client-urls=\"${ETCD_LISTEN_CLIENT_URLS}\" --listen-peer-urls=\"${ETCD_LISTEN_PEER_URLS}\" --advertise-client-urls=\"${ETCD_ADVERTISE_CLIENT_URLS}\" --initial-cluster-token=\"${ETCD_INITIAL_CLUSTER_TOKEN}\" --initial-cluster=\"${ETCD_INITIAL_CLUSTER}\" --initial-cluster-state=\"${ETCD_INITIAL_CLUSTER_STATE}\" "
50 Restart=on-failure
51 LimitNOFILE=65536
52
53 [Install]
54 WantedBy=multi-user.target
55 EOF
56
57 systemctl daemon-reload
58 systemctl start etcd
59 systemctl enable etcd
60
61
62 etcd --version
63 if [[ $? -eq 0 ]];
64     then
65         echo 'etcd install success!'
66     else
67         echo 'etcd install error!'
68 fi

二、运行

./run.sh etcd03 etcd01=http://192.168.2.44:2380,etcd02=http://192.168.2.45:2380,etcd03=http://192.168.2.46:2380