kafka集群+knowstreaming安装

环境：centos7 mysql5.7 :kafka_2.13-3.5.1.tgz KnowStreaming-3.0.0-beta.3.tar.gz jdk11.tar.gz elasticsearch:7.6.1
三台centos7机器分别为：192.168.50.154 192.168.50.155 192.168.50.156
1.安装mysql脚本（作为参考）

function Install_Mysql(){
   
        cd $dir
        rpm -qa | grep -E "mariadb|mysql" | xargs yum -y remove >/dev/null 2>&1
        mv -f /var/lib/mysql/ /var/lib/mysqlbak$(date "+%s") >/dev/null 2>&1
        mkdir -p $dir/mysql/ && cd $dir/mysql/
        tar -zxf $dir/mysql5.7.tar.gz -C $dir/mysql/
        yum -y localinstall mysql* libaio*
        systemctl start mysqld
        systemctl enable mysqld >/dev/null 2>&1
        old_pass=`grep 'temporary password' /var/log/mysqld.log | awk '{print $NF}' | tail -n 1`
        mysql -NBe "alter user USER() identified by '$mysql_pass';" --connect-expired-password -uroot -p$old_pass
        if [ $? -eq 0 ];then
                echo  "Mysql database installation completed"
        else
                echo "Mysql database configuration failed. The script exits"
                exit
        fi
}

dir=`pwd`
mysql_pass=`date +%s |sha256sum |base64 |head -c 10 ;echo`"_Di2"
echo "$mysql_pass" > $dir/mysql.password