I have configured the database using SET GLOBAL binlog_expire_logs_seconds = 259200; query to purge binary logs older then 3 days. Using MySQL 8.0.22. This does not seem to have any effect. bin logs are accumulating under /var/lib/mysq/dbname-bin.000xx files. Executing
PURGE BINARY LOGS BEFORE '2020-.......'
works, but I would like the DB engine to purge those logs on its own without myself calling it. Otherwise binlogs take most of the disk space. Please suggest.
I had the same problem (but on Windows 10), I edited my.ini located in c:/xampp/mysql/bin and added the following:
binlog_expire_logs_seconds=60
Does this work for you?
Related
We have noticed that we run out of space on one of our machines that is running Mysql 5.5.37 (InnoDb)
Mysql seems to be generating several ~1.1GB files per day with the name pattern 0.0001234 (increasing number) in the /var/lib/mysql folder.
What are those files?
Can they be deleted?
Can we configure mysql to write them to a different location?
To avoid having to do the purge periodically, set this:
expire_logs_days = 7
in my.cnf. That will keep the binlogs purged down to 7 days' worth.
See also binlog_expire_logs_seconds in MySQL 8.0.
Turns out these were binlogs.
The setting log_bin=0
does not disable them but simply sets the file-name-format to 0.\d+
We deleted the present logs with PURGE BINARY LOGS to 'lastFileName', then disabled the generation by commenting out all bin_log related entries in the my.cnf.
I have a backup from two weeks ago that will be a last resort, but the DB files themselves seem fine and it appears it's just the ibdata1 file that is having issues. As stated, I'm using Xampp and MySQL crashes right after I start it. Here is the error log: http://textuploader.com/7vfd
I hadn't done anything out of the ordinary; it seemingly just up and stopped working.
I looked up InnoDB recovery, but the solutions I tried required MySQL to be functional, which it isn't due to the corruption. Is there a way to salvage what are presumably intact IBD files with a bad ibdata1 file?
Edit: I was aware of using innodb_force_recovery = # and I had tried it...except I had tried it in the wrong my.ini. I had to use the one in the bin folder. It appears to be fixed now.
The ibdata1 file contains the tablespace information and other metadata about your Mysql database(s).
You can try using the innodb_force_recovery = 1 all the way to innodb_force_recovery = 6 to see if that rectifies the problem. Try changing this in your my.cnf (my.ini for windows) file and then attempt to restart your mysql server again.
If you are able to start Mysql using recovery flag, your database will be in a read-only mode. You should do a mysqldump of the data, stop mysql, re-install fresh, create your database again, and import back in the data.
Here is a link for more info on innodb recovery dev.mysql.
If you use linux...
Another more complex option is to use percona recovery tool kit. This will realign your tablespaces. Although, from experience its a bit of a challenge to navigate and takes a bit of time to implement if you are a newb.
However, akuzminsky the creator of the toolkit (how cool is that!) mentioned that he has made significant improvements to the toolkit.
Link to download toolkit Percona.com
Link with a walkthough from chriSQL.
Link to akuzinsky's website TwinDB.
Unless that data is mission critical, I would just revert back to the backup from 2 weeks prior. The amount of time and effort you may end up putting into recovering this data may out way the benefit.
In my case, the mysql.ini didn't have the innodb_force_recovery option.
So i added it to the file and the start was able to start normally
The location to the ini file for my case was
C:\xampp\mysql\bin\my.ini
innodb_force_recovery = 1
For my case, the data got corrupted after a disk check up by windows. In the due course, the database got corrupted.
Hope this can as well help someone out there.
on my case using xampp v3.3.3, i enable innodb_force_recovery = 6 in the top of my.ini configuration file and start the service from xampp dashboard.
also i clean up log, disable innodb_force_recovery = 6 and start again. it works like a charm
I have a mysql log file that regularly goes over 30gb, this sucks when you realise that your server is full because of this file. I need a simple solution to limit this file to about 1gb, i don't need logs that run that long, and i'd rather avoid this problem in the future.
Any ideas? Thanks
To specify it in the my.cnf file, backup your current my.cnf file (always recommended), stop slave, stop the MySQL server and place the following option:
# relay log restrictions
relay-log-space-limit=15G
Then save and quit the file and start MySQL. Unless you configured differently, MySQL will automatically start the slave thread.
I have tried several commands (FLUSH LOGS, PURGE MASTER) but none deletes the log files (when previously activated) or the log tables (mysql/slow_log.CSV and mysql/general_log.CSV and their .frm and .CSM counterparts).
SHOW BINARY LOGS returns "You are not using binary logging".
Edit: I found this simple solution to clear the table logs (but not yet the file logs using a mysql command):
TRUNCATE mysql.general_log;
TRUNCATE mysql.slow_log;
FLUSH LOGS just closes and reopens log files. If the log files are large, it won't reduce them. If you're on Linux, you can use mv to rename log files while they're in use, and then after FLUSH LOGS, you know that MySQL is writing to a new, small file, and you can remove the old big files.
Binary logs are different. To eliminate old binlogs, use PURGE BINARY LOGS. Make sure your slaves (if any) aren't still using the binary logs. That is, run SHOW SLAVE STATUS to see what binlog file they're working on, and don't purge that file or later files.
Also keep in mind that binlogs are useful for point-in-time recovery in case you need to restore from backups and then reapply binlogs to bring the database up to date. If you need to use binlogs in this manner, don't purge the binlogs that have been written since your last backup.
If you are on amazon RDS, executing this twice will do the trick:
PROMPT> CALL mysql.rds_rotate_slow_log;
PROMPT> CALL mysql.rds_rotate_general_log;
Source: http://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/USER_LogAccess.Concepts.MySQL.html
It seems binary logging is not enabled in your server .And i guess you want to delete the old log files which were used/created at the time of binary logging is enabled . you can delete them manually using 'rm' command if you want . if you want to enable the binary logging you can do the same by updating the configuaration file ( but it needs restart of the server if it is already running) . You can refer below links.
http://dev.mysql.com/doc/refman/5.0/en/replication-options-binary-log.html#option_mysqld_log-bin
http://dev.mysql.com/doc/refman/5.0/en/replication-options-binary-log.html#sysvar_log_bin
I've got a small database, around 50mb. It's a master replicating to a remote server. I noticed that the relay-bin files total to over 5GB. Is it safe to delete them?
I think a better answer is relay logs can be 'deleted' but mysql should manage it automatically.
One way to do this is to check for the value of relay_log_purge.
It should be set to 1 if you want mysql to manage them:
set global relay_log_purge=1;
You would probably need to flush the logs:
flush logs;
This does not affect the binary logs.
Maybe try to resync your master and slave.
If possible, cleanup the slave by running a
reset slave
it will purge all relay binary logs.
Then set the replication again with change master to ...
You may have too much lag between your master and slave.
From the MySQL manual:
The SQL thread automatically deletes each relay log file after it has
executed all events in the file and no longer needs it. There is no
explicit mechanism for deleting relay logs because the SQL thread
takes care of doing so. However, FLUSH LOGS rotates relay logs, which
influences when the SQL thread deletes them.
No, do not delete the relay-bin files manually. What you can do is to purge the binary files using MySQL commands. See the MySQL 5.0 Manual for more on the PURGE BINARY LOGS command.