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【Redis】用python操作redis集群
https://blog.csdn.net/bitcarmanlee/article/details/51852126
密码不能写到列表中去：
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- 有密码 就是这样 redisconn = StrictRedisCluster(startup_nodes=redis_nodes，password=password)
结合上一篇文章，改进脚本后操作redis-cluster
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[root@ip-172-31-47-226 tmp]# more /root/get_nottl.py
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# encoding: utf-8
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"""
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author: yangyi@youzan.com
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time: 2018/4/26 下午4:34
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func: 获取数据库中没有设置ttl的 key
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"""
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import redis
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import argparse
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import time
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import sys
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import rediscluster
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class ShowProcess:
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"""
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显示处理进度的类
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调用该类相关函数即可实现处理进度的显示
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"""
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i = 0 # 当前的处理进度
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max_steps = 0 # 总共需要处理的次数
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max_arrow = 50 # 进度条的长度
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# 初始化函数，需要知道总共的处理次数
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def __init__(self, max_steps):
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self.max_steps = max_steps
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self.i = 0
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# 显示函数，根据当前的处理进度i显示进度
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# 效果为[>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>]100.00%
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def show_process(self, i = None):
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if i is not None:
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self.i = i
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else:
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self.i += 1
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num_arrow = int(int(self.i) * int(self.max_arrow) / int(self.max_steps)) # 计算显示多少个'>'
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num_line = self.max_arrow - num_arrow # 计算显示多少个'-'
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percent = self.i * 100.0 / self.max_steps # 计算完成进度，格式为xx.xx%
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process_bar = '[' + '>' * num_arrow + ' ' * num_line + ']'+ '%.2f' % percent + '%' + '\r' # 带输出的字符串，'\r'表示不换行回到最左边
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sys.stdout.write(process_bar) # 这两句打印字符到终端
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sys.stdout.flush()
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def close(self, words='done'):
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print ''
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print words
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self.i = 0
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def check_ttl(redis_conn, no_ttl_file, dbindex):
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start_time = time.time()
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no_ttl_num = 0
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allkey= redis_conn.dbsize()
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keys_num= sum(list(set(allkey.values())))
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print"key分布如下:",allkey
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print "there are {num} keys in db {index} ".format(num=keys_num, index=dbindex)
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process_bar = ShowProcess(keys_num)
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with open(no_ttl_file, 'a') as f:
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for key in redis_conn.scan_iter(count=10):
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process_bar.show_process()
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if redis_conn.ttl(key) == -1:
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no_ttl_num += 1
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if no_ttl_num < 10000:
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f.write(key+'\n')
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else:
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continue
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process_bar.close()
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print "cost time(s):", time.time() - start_time
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print "no ttl keys number:", no_ttl_num
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print "we write keys with no ttl to the file: %s" % no_ttl_file
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def main():
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parser = argparse.ArgumentParser()
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parser.add_argument('-p', type=int, dest='port', action='store', help='port of redis ')
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parser.add_argument('-a', type=str, dest='password', action='store', help='password of redis ')
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parser.add_argument('-d', type=str, dest='db_list', action='store', default=0, help='ex : -d all / -d 1,2,3,4 ')
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args = parser.parse_args()
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port = args.port
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pwd = args.password
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if args.db_list == 'all':
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db_list = [i for i in xrange(0, 16)]
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else:
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db_list = [int(i) for i in args.db_list.split(',')]
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for index in db_list:
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try:
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startup_nodes= [{"host": "172.31.47.226", "port": port,"db":index}]
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r= rediscluster.StrictRedisCluster(startup_nodes=startup_nodes, password=pwd)
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except Exception, e:
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print e
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else:
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no_ttl_keys_file = "/tmp/{port}_{db}_no_ttl_keys.txt".format(port=port, db=index)
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check_ttl(r, no_ttl_keys_file, index)
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if __name__ == '__main__':
- main()
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