Shell脚本实现自动安装zookeeper_Linux

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:

$ ./install_zookeeper

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:

[cloudera-cdh5]
# packages for cloudera's distribution for hadoop, version 5, on redhat or centos 6 x86_64
name=cloudera's distribution for hadoop, version 5
baseurl=http://archive.cloudera.com/cdh5/redhat/6/x86_64/cdh/5/
gpgkey = http://archive.cloudera.com/cdh5/redhat/6/x86_64/cdh/rpm-gpg-key-cloudera
gpgcheck = 1
enabled = 1

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。

复制代码代码如下:

#!/bin/bash  

#  

# @file  

#   install_zookeeper.sh  

#  

# @date  

#   2014-12-21  

#  

# @author  

#   cheungmine@hgdb.net  

#  

# @version  

#   0.0.1pre  

#  

# @usage  

#   ./install_zookeeper.sh  

################################################################################  

#***********************************************************  

# split_to_array  

#   split string into array  

#***********************************************************  

function split_to_array() {  

    old_ifs="$ifs"  

    ifs="$2"  

    array=($1)  

    ifs="$old_ifs"  

}  

#***********************************************************  

# install_zookeeper  

#   install zookeeper on 1, 3 or 5 servers  

#  

# parameters:  

#   clientport - the port at which the clients will connect to  

#   servers - varying arguments: 1, 3, 5, up to 7  

#     "zkserver:serverport:appport"  

#     zkserver - ipaddr of zookeeper server  

#     serverport - communication port for zookeeper servers  

#     appport - communication port between zookeeper with other applications  

#  

# example:  

#   1) install_zookeeper 2181 zk1 zk2 zk3  

#   2) install_zookeeper 2181 192.168.122.201 192.168.122.202 192.168.122.203  

#   3) install_zookeeper "2181" "192.168.122.201:2888:3888" "192.168.122.202:2888:3888" "192.168.122.203:2888:3888"  

#   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"  

#***********************************************************  

err_invalid_zk_servers=1001  

function install_zookeeper() {  

    echo -e "<info> install zookeeper on cluster ..."  

    #chk_root  

    local ret clientport datadir len i zoo_cfg server serverport appport destip destlogin  

    serverport=2888  

    appport=3888  

    # parse the first argument  

    split_to_array $1 ":"  

    # the port at which the clients will connect  

    clientport=${array[0]}  

    # the directory where the snapshot is stored  

    datadir="/var/lib/zookeeper"  

    if [ ${#array[*]} -eq 2 ]; then  

        datadir=${array[1]}  

    fi  

    echo -e "<info> clientport: $clientport"  

    echo -e "<info> datadir: $datadir"  

    # zookeeper configure file  

    zoo_cfg="/usr/lib/zookeeper/conf/zoo.cfg"  

    # get list of servers: args  

    shift  

    local argc=$#  

    if [ $argc -eq 1 -o $argc -eq 3 -o $argc -eq 5 -o $argc -eq 7 ]; then  

        echo -e "<info> zookeeper servers in cluster: [$argc]"  

    else  

        echo -e "<error> invalid zookeeper servers: [$argc]"  

        exit $err_invalid_zk_servers;  

    fi  

    local argv="$@"  

    old_ifs="$ifs"  

    ifs=" "  

    local args=($argv)  

    ifs="$old_ifs"  

    # array variable  

    local ipaddrs=()  

    local servers=()  

    local sid=0  

    for a in ${args[@]}  

    do  

        let sid++  

        # check if server format is either of:  

        #   serverip  

        # or:  

        #   serverip:serverport:appport  

        split_to_array $a ":"  

        serverip=${array[0]}  

        if [ ${#array[*]} -ne 3 ]; then  

            a="$serverip:$serverport:$appport";  

        fi  

        local server="server.$sid=$a"  

        servers[sid-1]=$server  

        echo $server  

        ipaddrs[sid-1]=$serverip  

    done  

    # output array to one line string: echo ${servers[@]}  

    # get length of array  

    len=${#servers[*]}  

    i=0  

    while [ $i -lt $len ]  

    do  

        let sid=i+1  

        destip=${ipaddrs[$i]}  

        destlogin=root@$destip  

        echo -e "<info> configuring server.$sid: $destip ...\c"  

        ret=`ssh $destlogin "yum install -y zookeeper zookeeper-server && service zookeeper-server init --myid=$sid"`  

        ret=`ssh $destlogin "echo '#!{{install_zookeeper@hgdb.net==>' >> $zoo_cfg"`  

        for s in ${servers[*]}  

        do  

            ret=`ssh $destlogin "echo '$s' >> $zoo_cfg"`  

        done  

        ret=`ssh $destlogin "echo '#!<==install_zookeeper@hgdb.net}}' >> $zoo_cfg"`  

        echo -e "ok."  

        let i++  

    done  

    echo "<info> zookeeper cluster installation completed successfully!"  

}  

#=======================================================================  

install_zookeeper "2181" "192.168.122.201" "192.168.122.202" "192.168.122.203"