sound like files of a replication slave or master

and that is why you should post details and folder-listings
in the first posting to hep understand waht you are speaking
about

[root@srv-rhsoft:~]$ ls /data/db/mysql-srv/ | grep bin
-rw-rw---- 1 mysql mysql  12M 2013-03-22 19:44 bin.000001
-rw-rw---- 1 mysql mysql  14M 2013-03-23 13:36 bin.000002
-rw-rw---- 1 mysql mysql 153M 2013-03-27 20:33 bin.000003
-rw-rw---- 1 mysql mysql  102 2013-03-23 13:38 bin.index

[root@srv-rhsoft:~]$ cat /data/db/mysql-srv/bin.index
/mnt/data/db/mysql-srv/bin.000001
/mnt/data/db/mysql-srv/bin.000002
/mnt/data/db/mysql-srv/bin.000003

[root@srv-rhsoft:~]$ cat /etc/my.cnf | grep bin
log-bin                                 = /mnt/data/db/mysql-srv/bin.log
log-bin-index                           = /mnt/data/db/mysql-srv/bin.index

Am 27.03.2013 20:25, schrieb Arnold:
> There are files beginning with 1.<sequence number>.  The sequence number is 
> 000001 to 000015.  A new file is created every time MySQL is restarted.  The 
> 1.index file contains a list of these files.  One thing that I have done is 
> when I was hardening the security we stopped MySQL and moved the data 
> directory to a directory called /var/lib/db/mysql.  I changed the datadir 
> variable in the my.cnf file to point to this directory.  This was to be sure 
> that our data directory was not on the same partition as our SYSTEM or the 
> Log partitions.  Everything is working fine except I have the files mentioned 
> above.  
>
> -----Original Message-----
> From: Reindl Harald [mailto:h.rei...@thelounge.net] 
> Sent: Wednesday, March 27, 2013 3:14 PM
> To: mysql@lists.mysql.com
> Subject: Re: *.index files in MySQL Data directory
> 
> 
> 
> Am 27.03.2013 19:53, schrieb Arnold:
>> What are the *.index files in the MySQL Data directory?  I notice a new one 
>> is created every time that MySQL is stopped and restarted.  My Data 
>> directory is not in the default location so does that have anything to do 
>> with it?
> 
> maybe a "ls -lha" of a sample would be nice
> 
> never seen one of them from MySQL 3.x to 5.5 nor with MariaDB, indexes are 
> .MYI

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