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python操作redis集群_python 连接管理作redis集群

發布時間：2024/7/23 python 32 豆豆

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python的redis庫是不支持集群操作的，推薦庫：redis-py-cluster。

安裝

pip3 install redis-py-cluster

連接redis集群

#!/usr/bin/env python

# coding: utf-8

from rediscluster import StrictRedisCluster

class RedisCluster(object): # 連接redis集群

def __init__(self,conn_list):

self.conn_list = conn_list # 連接列表

def connect(self):

"""

連接redis集群

:return: object

"""

try:

# 非密碼連接redis集群

# redisconn = StrictRedisCluster(startup_nodes=self.conn_list)

# 使用密碼連接redis集群

redisconn = StrictRedisCluster(startup_nodes=self.conn_list, password='123456')

return redisconn

except Exception as e:

print(e)

print("錯誤,連接redis 集群失敗")

return False

redis_basis_conn = [{'host': '192.168.10.168', 'port': 7201}, {'host': '192.168.10.169', 'port': 7201}, {'host': '192.168.10.170', 'port': 7201}, {'host': '192.168.10.171', 'port': 7201}, {'host': '192.168.10.142', 'port': 7201}, {'host': '192.168.10.143', 'port': 7201}]

res = RedisCluster(redis_basis_conn).connect()

if not res:

print("連接redis集群失敗")

else:

print("連接redis集群成功")

執行輸出：

連接redis集群成功

二、操作redis集群

查看節點狀態

#!/usr/bin/env python

# coding: utf-8

from rediscluster import StrictRedisCluster

class RedisCluster(object): # 連接redis集群

def __init__(self,conn_list):

self.conn_list = conn_list # 連接列表

def connect(self):

"""

連接redis集群

:return: object

"""

try:

# 非密碼連接redis集群

# redisconn = StrictRedisCluster(startup_nodes=self.conn_list)

# 使用密碼連接redis集群

redisconn = StrictRedisCluster(startup_nodes=self.conn_list, password='123456')

return redisconn

except Exception as e:

print(e)

print("錯誤,連接redis 集群失敗")

return False

def get_state(self):

"""

獲取狀態

:return:

"""

res = RedisCluster(self.conn_list).connect()

# print("連接集群對象",res,type(res),res.__dict__)

if not res:

return False

dic = res.cluster_info() # 查看info信息, 返回dict

for i in dic: # 遍歷dict

ip = i.split(":")[0]

if dic[i].get('cluster_state'): # 獲取狀態

print("節點狀態, ip: ", ip, "value: ", dic[i].get('cluster_state'))

RedisCluster(redis_basis_conn).get_state()

執行輸出：

節點狀態, ip: 192.168.10.171 value: ok

節點狀態, ip: 192.168.10.169 value: ok

節點狀態, ip: 192.168.10.143 value: ok

節點狀態, ip: 192.168.10.142 value: ok

節點狀態, ip: 192.168.10.170 value: ok

節點狀態, ip: 192.168.10.168 value: ok

查看aof是否開啟

#!/usr/bin/env python

# coding: utf-8

from rediscluster import StrictRedisCluster

class RedisCluster(object): # 連接redis集群

def __init__(self,conn_list):

self.conn_list = conn_list # 連接列表

def connect(self):

"""

連接redis集群

:return: object

"""

try:

# 非密碼連接redis集群

# redisconn = StrictRedisCluster(startup_nodes=self.conn_list)

# 使用密碼連接redis集群

redisconn = StrictRedisCluster(startup_nodes=self.conn_list, password='123456')

return redisconn

except Exception as e:

print(e)

print("錯誤,連接redis 集群失敗")

return False

def get_info(self):

"""

獲取redis集群info信息

:return: dict

"""

res = RedisCluster(self.conn_list).connect()

# print("連接集群對象",res,type(res),res.__dict__)

if not res:

return False

dic = res.cluster_info() # 查看info信息, 返回dict

if not dic:

return False

return dic

def get_state(self):

"""

獲取狀態

:return:

"""

dic = self.get_info() # type:dict

if not dic:

return dic

for i in dic: # 遍歷dict

ip = i.split(":")[0]

if dic[i].get('cluster_state'): # 獲取狀態

print("節點狀態, ip: ", ip, "value: ", dic[i].get('cluster_state'))

def get_has_aof(self):

"""

查看aof是否打開

:return:

"""

res = RedisCluster(self.conn_list).connect()

# print("連接集群對象",res,type(res),res.__dict__)

if not res:

return False

dic = res.config_get('appendonly') # 從config配置項中查詢appendonly

for i in dic:

ip = i.split(":")[0]

# print(dic[i])

if dic[i].get('appendonly'):

print("aof開關, ip: ", ip,"value: ",dic[i].get('appendonly'))

RedisCluster(redis_basis_conn).get_has_aof()

執行輸出：

aof開關, ip: 192.168.10.170 value: no

aof開關, ip: 192.168.10.168 value: no

aof開關, ip: 192.168.10.142 value: no

aof開關, ip: 192.168.10.171 value: no

aof開關, ip: 192.168.10.169 value: no

aof開關, ip: 192.168.10.143 value: no

set和get

#!/usr/bin/env python

# coding: utf-8

from rediscluster import StrictRedisCluster

class RedisCluster(object): # 連接redis集群

def __init__(self,conn_list):

self.conn_list = conn_list # 連接列表

def connect(self):

"""

連接redis集群

:return: object

"""

try:

# 非密碼連接redis集群

# redisconn = StrictRedisCluster(startup_nodes=self.conn_list)

# 使用密碼連接redis集群

redisconn = StrictRedisCluster(startup_nodes=self.conn_list, password='123456')

return redisconn

except Exception as e:

print(e)

print("錯誤,連接redis 集群失敗")

return False

# 連接列表，注意：必須嚴格按照此格式來！

redis_conn = RedisCluster(redis_basis_conn).connect() # redis連接對象

redis_conn.set('name','weijing') # 插入一個值

print("name is: ", redis_conn.get('name')) # 查詢值

執行輸出：

name is: b'weijing'

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