- #!/usr/bin/phthon
- import os
- import time
- import commands
- import shutil
- import threading
- from os.path import join, getsize
- import MySQLdb as mydb
- # 备份目录
- baseDir = "/data2/backup/backup_data/"
- # ns 或 wx; 备份后是否要压缩(mydumper 自带压缩功能)，要压缩 True，否则 False.
- idc = 'ns'; isZip = True
- # 备份失败是否重试 ，True 则重试,不重试 设 False, retry_sleep 多久后才开始重试(秒)
- is_errRetryBackup = True; retry_sleep = 300
- # 备份日期
- backup_date = time.strftime("%Y%m%d")
- # 备份命令
- cmd = "/usr/local/bin/mydumper -h %s -u root -p password? -P %s %s -t 5 -o %s"
- '''''
- 功能描述：
- 1. mydumper 远程批量备份, 备份列表由配置文件提供
- 2. 可按要求对备份是否压缩(mydumper 自动压缩)
- 3. 备份失败允许再尝试备份一次
- 4. 备份信息写入数据库
- '''
- def main():
- thread_pool = []
- # 是否启用压缩
- zip = '-c' if isZip == True else ''
- # 从配置文件读取 ip, 名称, 端口, 并拼凑备份语句
- #f = open('/data2/backup/cnf/other_list.cnf', 'r')
- f = open('/data/other_list.cnf', 'r')
- for lines in f.readlines():
- if (not lines.startswith('#') and len(lines.strip()) > 0):
- str = lines.split()
- host, businessName, port, isMaster = str[0], str[1], str[2], str[3]
- # 业务文件夹不存在则创建
- dir = baseDir + '/' + businessName;
- if (not os.path.exists(dir)):
- os.makedirs(dir)
- dir += "/%s%s" % (businessName, backup_date)
- # 业务目录: dir , 备份目录: dir/name+备份日期
- strcmd = cmd % (host, port, zip, dir)
- th = threading.Thread(target = mydumper, args =(strcmd, dir, businessName, host, port, is_errRetryBackup, int(isMaster)))
- thread_pool.append(th)
- if (thread_pool):
- for t in thread_pool:
- t.daemon = True
- t.start()
- for t in thread_pool:
- t.join()
- def mydumper(sCmd, backupDir, businessName, host, port, is_Retry, isMaster):
- master_host = ""; backup_host = host; name = businessName; port = port; backup_type = 1; file = "";
- start_time = ""; stop_time = ""; returncode = 0; file_size = 0; slave_statement = ""; std_err = "";
- start_time = time.strftime("%Y%m%d%H%M%S")
- # 清除可能遗留的备份
- if (os.path.exists(backupDir)):
- shutil.rmtree(backupDir)
- # 执行备份
- returncode, std_err = execute(sCmd)
- stop_time = time.strftime("%Y%m%d%H%M%S")
- if (returncode == 0):
- # 备份 std_err 返回不为空也视为出错。
- if (std_err.strip() != ""):
- returncode = 123456
- else:
- # 获取 change master to 信息，再次校验备份是否有效
- returncode, std_err, master_host, slave_statement = statement(backupDir, backup_host, isMaster)
- if (returncode == 0):
- file = backupDir
- if (returncode != 0):
- # 异常备份标记为: 日期 + _ERR
- errDir = backupDir + "_ERR"
- os.rename(backupDir, errDir)
- file = errDir
- # 获取备份大小
- file_size = getDirsize(file)
- if (len(std_err) > 255):
- std_err = std_err[:250] + "..."
- my_args = [idc, master_host, backup_host, name, port, backup_type, file, start_time, stop_time, returncode, file_size, slave_statement, std_err]
- # 写入数据库
- call_proc(my_args)
- # 备份失败是否需要重备? 重备允许一次.
- if (is_Retry == True and returncode != 0):
- time.sleep(retry_sleep)
- oldfile = sCmd.split('-o')[1]
- pos = oldfile.rfind("/") + 1
- # 获取备份全路径, 备份文件标记为重备 字样
- retry_file = oldfile[:pos] + "ReBackup-" + oldfile[pos:]
- retryCmd = sCmd.replace(oldfile, retry_file)
- # 重备开始
- mydumper(retryCmd, retry_file.strip(), name, host, port, False, isMaster)
- def getDirsize(path):
- # 获取备份文件夹大小
- size = 0L
- for root, dirs, files in os.walk(path):
- size += sum([getsize(join(root, name)) for name in files])
- return (size)
- def statement(path, backup_host, isMaster):
- '''''
- 功能: 从 metadata 读取change master to 信息
- 1. 备份过程: 会先生成: metadata.partial, 完成后metadata.partial会重名为: metadata 并写入备份完成时间
- 2. metadata 分3段:
- (1) Started dump: 备份开始时间.
- (2) master 的log-file 和 log-pos 信息 (必有); slave 的host、log-file 和 log-pos 信息 （备机是slave 才有)
- (3) Finished dump: 备份结束时间
- 3. 返回错码, master_host 和 change master to 信息
- '''
- path += "/metadata"; sMetadata = ""; master_host = ""; er_code = 654321; er_info = "%s not exists !!!" % (path)
- if (os.path.exists(path)):
- if (isMaster != 1):
- # 备机是 slave
- num = 3
- sFinds = "SLAVE STATUS"
- else:
- num = 2
- sFinds = "MASTER STATUS"
- f = open(path, 'r')
- rows = f.readlines(); i = 100; lst =[]
- for s in rows:
- if (s.find(sFinds) > 0):
- i = 1; continue
- if (i <= num):
- lst.append(s.split(':')[1].strip())
- i += 1
- if (isMaster == 1):
- # 备机是 master
- master_host = backup_host
- log_file, log_pos = lst;
- else:
- # 备机是 slave
- master_host, log_file, log_pos = lst;
- er_code = 0
- er_info = ""
- sMetadata = "CHANGE MASTER TO MASTER_HOST='%s',MASTER_LOG_FILE='%s',MASTER_LOG_POS=%s,MASTER_USER='rep_user',MASTER_PASSWORD='meizu.com'" % (master_host, log_file, log_pos )
- return (er_code, er_info, master_host, sMetadata)
- def execute(cmd):
- '''''
- 1.执行 shell 命令
- 2.返回执行信息 (returncode = 0 则执行成功, std_err 为报错的错误信息)
- '''
- try:
- returncode, std_err = commands.getstatusoutput(cmd)
- return (returncode, std_err)
- except os.error, e:
- # 异常返回 1001 错误
- return (1001, e)
- def call_proc(my_args):
- # 备份信息写入数据库
- try:
- conn = mydb.connect(host = '127.0.0.1', user = 'test', passwd = 'zxc/213?', db = 'meizu_item')
- cur = conn.cursor()
- cur.callproc('sp_backup_i',[my_args[0], my_args[1], my_args[2], my_args[3], my_args[4], my_args[5], my_args[6], my_args[7], my_args[8], my_args[9], my_args[10], my_args[11], my_args[12]])
- conn.commit()
- except mydb.Error, e:
- pass
- # print "Mysql Error %d: %s" % (e.args[0], e.args[1])
- finally:
- cur.close(); conn.close()
- if __name__ == '__main__':
- main()
