自动化卸载Ambari脚本示例与步骤

#!/bin/bash
# uninstall ambari automatic

#取得集群的所有主机名，这里需要注意：/etc/hosts配置的IP和主机名只能用一个空格分割
hostList=$(cat /etc/hosts | tail -n+3| cut -d ' ' -f 2|grep '.com')

#定义ambari组件所在目录对应的变量
yumReposDir=/etc/yum.repos.d/
alterNativesDir=/etc/alternatives/
hdpDir=/usr/hdp/
usrBinDir=/usr/bin/
etcDir=/etc/
mountHadoopDir=/mnt/xvdb/hadoop/
varLogDir=/var/log/
varRunDir=/var/run/
wwwHtmlDir=/var/www/html/

#ping主机的次数
pingCount=5

#Log日志开头
logPre=UNINSTALL

#输入ambari主机名称
read -p "Please input your master hostname: " master
master=${master:-"master"}
ssh $master "ambari-server stop"

#重置ambari数据库
ssh $master "ambari-server reset"

for host in $hostList
do
    #echo $host
    #检测主机的连通性
    unPing=$(ping $host -c $pingCount | grep 'Unreachable' | wc -l)
    if [ "$unPing" == "$pingCount" ]; then
        echo -e "$logPre======>$host is Unreachable,please check '/etc/hosts' file"
        continue
    fi

    echo "$logPre======>$host deleting... \n"
    #1.)删除hdp.repo、HDP.repo、HDP-UTILS.repo和ambari.repo
    ssh $host "cd $yumReposDir"
    ssh $host "rm -rf $yumReposDir/hdp.repo"
    ssh $host "rm -rf $yumReposDir/HDP*"
    ssh $host "rm -rf $yumReposDir/ambari.repo"
    
    #删除HDP相关的安装包
    ssh $host "yum remove -y  sqoop.noarch"
    ssh $host "yum remove -y  lzo-devel.x86_64"
    ssh $host "yum remove -y  hadoop-libhdfs.x86_64"
    ssh $host "yum remove -y  rrdtool.x86_64"
    ssh $host "yum remove -y  hbase.noarch"
    ssh $host "yum remove -y  pig.noarch"
    ssh $host "yum remove -y  lzo.x86_64" 
    ssh $host "yum remove -y  ambari-log4j.noarch"
    ssh $host "yum remove -y  oozie.noarch"
    ssh $host "yum remove -y  oozie-client.noarch"