Shell Script to auto kill mysql sleep processes

mysql kill long running queries automatically
mysql lots of sleep processes
mysql killed process still running
mysql show sleep queries
mysql show running queries
mysql running queries from command line
mariadb kill process
php kill mysql process

How We Kill mysql sleep processes Like:

+------+-----------+-----------+------------------------+---------+------+----------------+-------------------------------------------------------------------------------------------+
| Id   | User      | Host      | db                     | Command | Time | State          | Info                                                                                      |
+------+-----------+-----------+------------------------+---------+------+----------------+-------------------------------------------------------------------------------------------+
| 2477 | stageuser | localhost | jj_production_11102013 | Query   |    0 | end            | SELECT * FROM wp_comments WHERE blog_id = 1071 ORDER BY comment_date_gmt DESC LIMIT 0, 50 |
| 3050 | stageuser | localhost | jj_production_11102013 | Query   |    0 | Sorting result | SELECT * FROM wp_comments WHERE blog_id = 1071 ORDER BY comment_date_gmt DESC LIMIT 0, 50 |
| 3052 | stageuser | localhost | jj_production_11102013 | Sleep   |  336 |                | NULL                                                                                      |
| 3056 | stageuser | localhost | NULL                   | Query   |    0 | NULL           | show processlist                                                                          |
| 3057 | stageuser | localhost | jj_production_11102013 | Sleep   |  301 |                | NULL                                                                                      |
| 3058 | stageuser | localhost | jj_production_11102013 | Sleep   |  299 |                | NULL                                                                                      |
| 3059 | stageuser | localhost | jj_production_11102013 | Sleep   |  298 |                | NULL                                                                                      |
| 3061 | stageuser | localhost | jj_production_11102013 | Sleep   |  273 |                | NULL                                                                                      |
| 3068 | stageuser | localhost | jj_production_11102013 | Sleep   |  251 |                | NULL                                                                                      |
| 3072 | stageuser | localhost | jj_production_11102013 | Sleep   |  233 |                | NULL                                                                                      |
| 3111 | stageuser | localhost | jj_production_11102013 | Sleep   |    1 |                | NULL                                                                                      |
+------+-----------+-----------+------------------------+---------+------+----------------+-------------------------------------------------------------------------------------------+
11 rows in set (0.00 sec)

Is this sleep processes affect site performance like slow other queries?

I made it.

Create kill_sleep.sh file

mysql -u<user> -p<password> -h<host> -e "select concat('KILL ',id,';')  into outfile '/tmp/sleep_processes.txt' from information_schema.processlist where Command = 'Sleep'"
mysql -u<user> -p<password> -h<host> -e "source /tmp/sleep_processes.txt;"
rm -rf /tmp/sleep_processes.txt

And set kill_sleep.sh to cron job .

Make MySQL Faster by Killing Sleep Connections Automatically , Here's a Bash script to kill sleeping MySQL connections automatically and almost immediately to decrease MySQL CPU Usage and make  SHOW PROCESSLIST in MySQL command: sleep. It is making the database slow and when I kill the process, then it works normally. Shell Script to auto kill mysql

Vishal's answer works well if you're running the command on the MySQL server, but it won't work if you're connecting to the server remotely or if you don't have permission to run SOURCE or SELECT ... INTO OUTFILE (eg. Amazon's RDS). It's possible to rewrite it not to rely on those features though, and then it'll work anywhere:

mysql -h<host> -u<user> -p -e "SELECT CONCAT('KILL ',id,';') FROM information_schema.processlist WHERE Command = 'Sleep'" > sleep.txt
cat sleep.txt | xargs -I% mysql -h<host> -u<user> -p -e "%"

How can I kill all MySQL sleeping queries?, How can I kill all MySQL sleeping queries? Posted September 20, 2019 9.2k views. Linux BasicsMySQL. Hello,. I've noticed that I have a lot of sleeping MySQL  Sometimes you need to kill multiple SQL queries at once. This may be time consuming, since the MYSQL kill command can have only one argument. A simple hack is to create a script that will do it for us. First we start by listing the processes we wish to kill.

The syntax is:

KILL thread_id

In your case:

  mysql > KILL 3057

But in order to delete all the sleep processes,one command cant be used, you need to loop through whole processlist,after taking all the processes in tmp table and looping through it:

select concat('KILL ',id,';') from information_schema.processlist where Command='Sleep';

select concat('KILL ',id,';') from information_schema.processlist where Command='Sleep' into outfile '/tmp/a.txt';

Referred from here

How to automatically kill slow MySQL queries after N seconds , check out pt-kill command from the percona toolkit. and.. do start monitoring your system - munin, cacti with better cacti templates for mysql,  DROP PROCEDURE IF EXISTS kill_user_processes$$ CREATE PROCEDURE `kill_user_processes`( IN user_to_kill VARCHAR(255) ) READS SQL DATA BEGIN DECLARE name_val VARCHAR(255); DECLARE no_more_rows BOOLEAN; DECLARE loop_cntr INT DEFAULT 0; DECLARE num_rows INT DEFAULT 0; DECLARE friends_cur CURSOR FOR SELECT CONCAT('KILL ',id,';') FROM information_schema.processlist WHERE USER=user_to_kill; DECLARE CONTINUE HANDLER FOR NOT FOUND SET no_more_rows = TRUE; OPEN friends_cur; SELECT FOUND_ROWS() INTO

Percona Tools:

pt-kill --match-command Sleep --idle-time 100 --victims all  --interval 30 --kill

This will find all connections that are "Sleep" state and idle for 100 seconds or more and kill them. --interval 30 will make it keep do this every 30 seconds. So you can open a screen -S ptkill then in that screen run the above command, then ctrl-A, D to detach and exit the terminal and it will just keep running cleaning up your connections.

https://www.percona.com/doc/percona-toolkit/2.1/pt-kill.html

Bash Script to Kill Sleeping MySQL Processes ·, Here is a quick BASH script for you to quickly clear out sleeping MySQL processes over 1 second old. This article shows you how to use this Bash shell command effectively. Using sleep is easy. On the command line type sleep, a space, a number, and then press Enter. sleep 5. The cursor will disappear for five seconds and then return. What happened? Using sleep on the command line instructs Bash to suspend processing for the duration you provided. In our example this was five seconds.

How to Kill All MySQL Sleeping Processes, Having a lot of MySQL sleeping processes can cause a huge spike in your CPU load. Here is a simple one line command which would kill all of the current  pt-kill --match-command Sleep --idle-time 100 --victims all --interval 30 --kill This will find all connections that are "Sleep" state and idle for 100 seconds or more and kill them. --interval 30 will make it keep do this every 30 seconds.

How to kill all the connection in SLEEP on MySQL Database , In case the SLEEP connection on MySQL DB is too large and are not cleared automatically, we can kill the connection explicitely on the database using the following command: mysql -u<Username> -p<password> -e "show processlist;" | grep Sleep | awk '{print $1}' | while read LINE; do mysql  Hello, I've noticed that I have a lot of sleeping MySQL processes. I tried killing them one by one but there are too many to do so. Does anyone know if there is an easier way to kill all sleeping processes at once Thanks!

Mass killing of MySQL processes, This may be time consuming, since the MYSQL kill command can have .​qualityunit.com/245419-Show-processlist-without-sleep-command. Summary of PowerShell’s Stop-Process Cmdlet. As you try each PowerShell command, get into the rhythm of Verb-Noun pairs such as Stop-Process. In this example, look out for PowerShell techniques such as pipeline and Get-Member. One real-life task is to create a script for killing processes, or as PowerShell says – Stop-Process.

Comments
  • possible duplicate: stackoverflow.com/questions/1903838/…
  • Looks like a sleep SQL injection attack, Trying to find the source of attack may be a good idea. saotn.org/mysql-sleep-attacks
  • mysql -u -p -e "show processlist;" | grep Sleep | awk '{print $1}' | while read LINE; do mysql -u -p -e "kill $LINE"; done
  • @Jhamvi I already try this , Its show only sleep processes Like <pre> > select concat('KILL ',id,';') from information_schema.processlist where user='stageuser'; +------------------------+ | concat('KILL ',id,';') | +------------------------+ | KILL 3477; | | KILL 3072; | | KILL 3068; | | KILL 3061; | | KILL 3059; | | KILL 3058; | | KILL 3057; | | KILL 3056; | | KILL 3052; | | KILL 3050; | | KILL 2477; | +------------------------+ 11 rows in set (0.00 sec) </pre>
  • @VishalKamal , it will show only sleep process, you need to parse the loop, what language are you using??
  • @VishalKamal i mean are you using any programming language, so that you can use looping and fire the quey using that language??
  • php, I want linux shell script who kill all sleep processes automatic.
  • @VishalKamal , using a single command its not possinble in linux shell, there are 2-3 queries needed, refer this