python備份mysql

#!/usr/bin/python
#--*-- coding:utf-8 --*--

import os
import time
import logging
import MySQLdb as mdb
from datetime import datetime

# LOG INFO
log='/data/scripts/logs/'
isExists = os.path.exists(log)
if not isExists:
    os.makedirs(log)
logging.basicConfig(level=logging.INFO,
                    format='%(asctime)s: %(levelname)-4s %(message)s',
                    filename= log + 'backup_mysql_' + time.strftime('%Y%m%d_%H%M%S', time.localtime()) + '.log',
                    filemode='w',
                    datefmt='%Y%m%d %X')
class MYSQL:
    def __init__(self,ip,user,pwd,db,port):
        self.ip = ip
        self.user = user
        self.pwd = pwd
        self.db = db
        self.port = port

    def __GetConnect(self):
        conn = mdb.connect(self.ip,self.user,self.pwd,self.db,self.port)
        cur = conn.cursor(cursorclass=mdb.cursors.DictCursor)
        return cur

    def Query(self,sql):
        cur = self.__GetConnect()
        cur.execute(sql)
        res = cur.fetchall()
        cur.close()
        return res

def dellog(log):
    f = list(os.listdir(log))
    logging.info('--------------------------------------------------')
    logging.info("Delete >60 days backup log %s" % log)
    for i in range(len(f)):
        filedate = os.path.getmtime(log + '/' + f[i])
        currdate = time.time()
        num = (currdate - filedate) / (60 * 60 * 24 * 31 * 12)
        if num > 5:
            if os.path.isfile(log + f[i]):
                try:
                    os.remove(log + '/' + f[i])
                    logging.info(u"Delete %s" % f[i])
                except Exception as e:
                    logging.info(e)
    logging.info('--------------------------------------------------')

def delpath(path,flag):
    f = list(os.listdir(path))
    logging.info("Delete >30 days backup file %s" % path)
    for i in range(len(f)):
        filedate = os.path.getmtime(path + '/' + f[i])
        currdate = time.time()
        num = (currdate - filedate) / (60 * 60 * 24 * 31)
        if flag == 'day':
            if num > 3:
                if os.path.isfile(path + f[i]):
                    try:
                        os.remove(path + '/' + f[i])
                        logging.info(u"Delete %s" % f[i])
                    except Exception as e:
                        logging.info(e)
        if flag == 'mon':
            if num > 12:
                if os.path.isfile(path + f[i]):
                    try:
                        os.remove(path + '/' + f[i])
                        logging.info(u"Delete %s" % f[i])
                    except Exception as e:
                        logging.info(e)
        if flag == 'year':
            if num > 12 * 5:
                if os.path.isfile(path + f[i]):
                    try:
                        os.remove(path + '/' + f[i])
                        logging.info(u"Delete %s" % f[i])
                    except Exception as e:
                        logging.info(e)


def main():
    user = 'dumper'
    pwd = '123456'
    schema = 'information_schema'
    port = 3306
    pre = '100.110.1.'
    iplist = ('10','11','12','13','15','17','58')
    for i in iplist:
        ip = pre + i
        #  create mysql connect instance
        mysql = MYSQL(ip,user,pwd,schema,port)
        # all db of need backup
        sql = 'select schema_name from schemata where schema_name not in ("information_schema","performance_schema","sys")'
        # query result is tuple,but all element is dictionary
        dblist = mysql.Query(sql)
        logging.info('Begin  backup ' + ip + ' to 10.110.0.1')
        #
        for db in dblist:
            path = '/media/dbbackup/'
            ti = time.strftime('%Y%m%d_%H%M%S', time.localtime())
            # db is dictionary,so get the values attributes
            dbname = db.values()[0]
            # local dir for backup
            path = path + ip + '/' + dbname + '/'
            # make if local dir is not exists
            isExists = os.path.exists(path)
            if not isExists:
                os.makedirs(path)
            fname = path + dbname + '_' + str(ti) + '.sql.gz'
            cmd = '/usr/local/mysql/bin/mysqldump -h%s -u%s -p%s --single-transaction --master-data=2 -R --triggers --hex-blob -B %s| gzip > %s' %(ip,user,pwd,dbname,fname)
            # begin backup
            logging.info('Begin  ' + dbname )
            os.system(cmd)
            # delete backup more than 30 days
            delpath(path,'day')
            # 判斷是否有初、年初，如是多保留一份
            dat = time.strftime('%Y%m%d', time.localtime())
            mon = '%d%02d01' % (time.localtime().tm_year, time.localtime().tm_mon)
            year = '%d0101' % (time.localtime().tm_year)
            if dat == mon:
                mpath = path + 'month/'
                isExists = os.path.exists(mpath)
                if not isExists:
                    os.makedirs(mpath)
                cmd='cp '+ fname + ' ' + mpath
                os.system(cmd)
                # delete backup more than 12 months
                delpath(mpath,'mon')
                if dat == year:
                    ypath = path + 'year/'
                    isExists = os.path.exists(ypath)
                    if not isExists:
                        os.makedirs(ypath)
                    cmd='cp '+ fname + ' ' + ypath
                    os.system(cmd)
                    # delete backup more than 5 years
                    delpath(ypath,'year')
    # delete backup log more than 6 years
    dellog(log)

if __name__ == '__main__':
    logging.info('##################################################')
    main()
    logging.info('##################################################')