超简易的查看mysql主从延时的脚本

1 代码逻辑

很简单，就是python连mysql，然后show slave status，然后取2个参数，后面加了一个log模块，然后做了一个循环，5s一次。

2. 代码本体

隐掉了一些敏感信息:

import MySQLdb
import logging
import time

FORMAT = ‘%(asctime)-15s  %(message)s‘
logging.basicConfig(filename=‘/tmp/slave.log‘,level=logging.DEBUG,format=FORMAT)
#logging.basicConfig(format=FORMAT)

dbuser = "xx"
dbpass = "xx"
dbname = "xx"
d=[]
d.append(‘xx.mysql.rds.aliyuncs.com‘)
d.append(‘xx.mysql.rds.aliyuncs.com‘)
d.append(‘xx.mysql.rds.aliyuncs.com‘)
d.append(‘xx.mysql.rds.aliyuncs.com‘)

def get_vars(thedb ):
    db1 = MySQLdb.connect(thedb,dbuser,dbpass,dbname)
#db1 = MySQLdb.connect(‘rdso8nxo733x5hq8q2a1.mysql.rds.aliyuncs.com‘,dbuser,dbpass,dbname)
    c = db1.cursor()
    c.execute("show slave status")
    ret = c.fetchone()
    c.close()
    db1.close()
    return (ret[32],ret[42])

while True:
    for i in d:
        print i
        (v1,v2) = get_vars(i)
    #print "Seconds_Behind_Master:%s \nSQL_Delay:%s\n" %(ret[32],ret[42])
        logging.debug(‘Seconds_Behind_Master:%s|SQL_Delay:%s‘,v1,v2)
        print "Seconds_Behind_Master:%s \nSQL_Delay:%s\n" %(v1,v2)
    logging.debug(‘end‘)
    time.sleep(5)

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