This is just incredible. I’m sooooo thankful to this guy. Millions of kudos.

Your quick geek-a-lion “unboxing”

There, happy now!



#!/usr/bin/env python
#
# Since MySQL is unable to purge logs based on number of logs and does it only based on days
# I stole this idea from mysql.com. It was in PHP, I rewrote it in Python <3
#
#         vllazarenko@ebay.com
#
# Questions? Do mail or pass by.
#
#

import sys
import MySQLdb

""" If you want to smurf, smurf over here """

slaveHost="localhost"
slaveUser="root"
slavePass="rootpass"
slaveDb=""

masterHost="masterhost"
masterUser="root"
masterPass="rootpass"
masterDb=""

keepLogs = 5

""" Please don't smurf after this line, unless you're an experienced smurf """

try:
     connSlave = MySQLdb.connect(slaveHost,
        	                 slaveUser,
                	         slavePass,
                        	 slaveDb)
except MySQLdb.Error, e:
     print "SLAVE: Error %d: %s" % (e.args[0], e.args[1])
     sys.exit (1)

try:
	connMaster = MySQLdb.connect(masterHost,
        	                     masterUser,
                	             masterPass,
                        	     masterDb)
except MySQLdb.Error, e:
     print "MASTER: Error %d: %s" % (e.args[0], e.args[1])
     sys.exit (1)

cursSlave = connSlave.cursor(MySQLdb.cursors.DictCursor)
cursMaster = connMaster.cursor(MySQLdb.cursors.DictCursor)

cursSlave.execute("SHOW SLAVE STATUS")
row = cursSlave.fetchone()

if row["Slave_IO_Running"] != "Yes":
	print "Alert. Slave IO not running."
if row["Slave_SQL_Running"] != "Yes":
	print "Alert. Slave SQL not running."
if row["Last_Error"] != "":
	print "Alert. Error on slave: %s" % row["Last_Error"]

masterLog = row["Master_Log_File"]
print "Current Master file on which Slave is acting: %s" % masterLog

cursMaster.execute("SHOW MASTER LOGS")
rows = cursMaster.fetchall()

if cursMaster.rowcount == 0:
	print "No master logs found."
	sys.exit(1)

lognames = list()

for row in rows:
	lognames.append(row["Log_name"])

marker = lognames.index(masterLog)
delMarker = marker - keepLogs;

if delMarker < 2:
	print "Not purging below 2 logs."
	sys.exit(1)

print "Going to purge logs up to %s." % lognames[delMarker]

delQuery = "PURGE MASTER LOGS TO '%s'" % lognames[delMarker]
# cursMaster.execute(delQuery)

print "Master binlogs were purged. The oldest log now available on the master is %s." % lognames[delMarker]

cursSlave.close()
connSlave.close()
cursMaster.close()
connMaster.close()