1.檢視是否安裝了mysql

rpm -qa | grep -i mysql

安裝了

2.停止mysql服務，刪除之前安裝的mysql

停止 service mysql stop
刪除
rpm -e MySQL-server-5.5.47-1.linux2.6.x86_64
rpm -e MySQL-client-5.5.47-1.linux2.6.x86_64

3.檢視之前老版本mysql的目錄，並且刪除老版本mysql的檔案和庫 find / -name mysql

 find / -name mysql

查詢結果：

1 /root/mysql
2 /root/Downloads/sqoop-1.4.6.bin__hadoop-2.0.4-alpha/src/java/org/apache/sqoop/mapreduce/mysql
3 /root/Downloads/sqoop-1.4.6.bin__hadoop-2.0.4-alpha/src/test/org/apache/sqoop/manager/mysql
4 /root/Downloads/apache-hive-1.2.0-bin/scripts/metastore/upgrade/mysql
5 /usr/lib64/mysql
6 /var/lib/mysql
7 /var/lib/mysql/mysq
 

刪除對應的mysql目錄：

1 rm -rf /root/mysql
2 rm -rf /root/Downloads/sqoop-1.4.6.bin__hadoop-2.0.4-alpha/src/java/org/apache/sqoop/mapreduce/mysql
3 rm -rf /root/Downloads/sqoop-1.4.6.bin__hadoop-2.0.4-alpha/src/test/org/apache/sqoop/manager/mysql
4 rm -rf /root/Downloads/apache-hive-1.2.0-bin/scripts/metastore/upgrade/mysql
5 rm -rf /usr/lib64/mysql
6 rm -rf /var/lib/mysql
7 rm -rf /var/lib/mysql/mysql
 

4.再次查詢機器是否安裝mysql

rpm -qa | grep -i mysql

解除安裝成功