释放双眼，带上耳机，听听看~！
A：本脚本运行的机器，Linux RHEL6
B,C,D,…：待安装zookeeper cluster的机器, Linux RHEL6
首先在脚本运行的机器A上确定可以ssh无密码登录到待安装zk的机器B,C,D,…上，然后就可以在A上运行本脚本:
代码如下:
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前提：
B, C, D机器必须配置好repo，本脚本使用的是cdh5的repo, 下面的内容保存到：/etc/yum.repos.d/cloudera-cdh5.repo:
代码如下:
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2
3# Packages for Cloudera's Distribution for Hadoop, Version 5, on RedHat or CentOS 6 x86_64
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5name=Cloudera's Distribution for Hadoop, Version 5
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7baseurl=http://archive.cloudera.com/cdh5/redhat/6/x86_64/cdh/5/
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9gpgkey = http://archive.cloudera.com/cdh5/redhat/6/x86_64/cdh/RPM-GPG-KEY-cloudera
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11gpgcheck = 1
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13enabled = 1
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自动安装脚本将自动在B,C,D机器上安装好zookeeper, 配置好相关配置文件。但没有启动它们。支持1,3,5,7个服务器。
代码如下:
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2
3#
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5# @file
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7# install_zookeeper.sh
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9#
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11# @date
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13# 2014-12-21
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15#
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17# @author
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19# cheungmine@hgdb.net
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21#
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23# @version
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25# 0.0.1pre
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27#
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29# @usage
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31# ./install_zookeeper.sh
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33################################################################################
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37#***********************************************************
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39# split_to_array
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41# split string into array
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43#***********************************************************
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45function split_to_array() {
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47 OLD_IFS="$IFS"
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49 IFS="$2"
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51 array=($1)
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53 IFS="$OLD_IFS"
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55}
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61#***********************************************************
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63# install_zookeeper
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65# install zookeeper on 1, 3 or 5 servers
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67#
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69# Parameters:
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71# clientPort - the port at which the clients will connect to
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73# servers - varying arguments: 1, 3, 5, up to 7
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75# "zkServer:serverPort:appPort"
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77# zkServer - ipaddr of zookeeper server
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79# serverPort - communication port for zookeeper servers
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81# appPort - communication port between zookeeper with other applications
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83#
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85# Example:
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87# 1) install_zookeeper 2181 zk1 zk2 zk3
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89# 2) install_zookeeper 2181 192.168.122.201 192.168.122.202 192.168.122.203
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91# 3) install_zookeeper "2181" "192.168.122.201:2888:3888" "192.168.122.202:2888:3888" "192.168.122.203:2888:3888"
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93# 4) install_zookeeper "2181:/var/lib/zookeeper" "192.168.122.201:2888:3888" "192.168.122.202:2888:3888" "192.168.122.203:2888:3888"
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95#***********************************************************
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97ERR_INVALID_ZK_SERVERS=1001
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101function install_zookeeper() {
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103 echo -e "<INFO> install zookeeper on cluster ..."
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105 #chk_root
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109 local ret clientPort dataDir len i ZOO_CFG server serverPort appPort destip destlogin
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113 serverPort=2888
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115 appPort=3888
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119 # parse the first argument
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121 split_to_array $1 ":"
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125 # the port at which the clients will connect
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127 clientPort=${array[0]}
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131 # the directory where the snapshot is stored
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133 dataDir="/var/lib/zookeeper"
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135 if [ ${#array[*]} -eq 2 ]; then
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137 dataDir=${array[1]}
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139 fi
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143 echo -e "<INFO> clientPort: $clientPort"
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145 echo -e "<INFO> dataDir: $dataDir"
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149 # zookeeper configure file
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151 ZOO_CFG="/usr/lib/zookeeper/conf/zoo.cfg"
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155 # get list of servers: args
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157 shift
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159 local argc=$#
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163 if [ $argc -eq 1 -o $argc -eq 3 -o $argc -eq 5 -o $argc -eq 7 ]; then
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165 echo -e "<INFO> zookeeper servers in cluster: [$argc]"
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167 else
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169 echo -e "<ERROR> invalid zookeeper servers: [$argc]"
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171 exit $ERR_INVALID_ZK_SERVERS;
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173 fi
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177 local argv="$@"
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181 OLD_IFS="$IFS"
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183 IFS=" "
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185 local args=($argv)
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187 IFS="$OLD_IFS"
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191 # array variable
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193 local ipaddrs=()
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195 local servers=()
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199 local sid=0
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201 for a in ${args[@]}
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203 do
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205 let sid++
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209 # check if server format is either of:
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211 # serverIP
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213 # or:
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215 # serverIP:serverPort:appPort
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217 split_to_array $a ":"
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219 serverIP=${array[0]}
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223 if [ ${#array[*]} -ne 3 ]; then
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225 a="$serverIP:$serverPort:$appPort";
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227 fi
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231 local server="server.$sid=$a"
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233 servers[sid-1]=$server
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235 echo $server
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239 ipaddrs[sid-1]=$serverIP
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241 done
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245 # output array to one line string: echo ${servers[@]}
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247 # get length of array
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249 len=${#servers[*]}
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251 i=0
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253 while [ $i -lt $len ]
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255 do
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257 let sid=i+1
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259 destip=${ipaddrs[$i]}
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261 destlogin=root@$destip
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263 echo -e "<INFO> configuring server.$sid: $destip ...\c"
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267 ret=`ssh $destlogin "yum install -y zookeeper zookeeper-server && service zookeeper-server init --myid=$sid"`
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271 ret=`ssh $destlogin "echo '#!{{install_zookeeper@hgdb.net==>' >> $ZOO_CFG"`
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275 for s in ${servers[*]}
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277 do
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279 ret=`ssh $destlogin "echo '$s' >> $ZOO_CFG"`
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281 done
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285 ret=`ssh $destlogin "echo '#!<==install_zookeeper@hgdb.net}}' >> $ZOO_CFG"`
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289 echo -e "OK."
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293 let i++
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295 done
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299 echo "<INFO> zookeeper cluster installation completed successfully!"
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301}
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305#=======================================================================
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307install_zookeeper "2181" "192.168.122.201" "192.168.122.202" "192.168.122.203"
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根据配置修改最后一行:
代码如下:
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注意：需要把zk-cluster的每台机器上的防火墙停掉，再启动zookeeper:
代码如下:
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