# 安装
[root@db01 ~]# yum install -y python36-devel
## 安装python调用redis的库文件
[root@db01 ~]# pip3 install redis
## 导入redis
[root@db01 ~]# python3.6
Python 3.6.8 (default, Jun 20 2023, 11:53:23)
[GCC 4.8.5 20150623 (Red Hat 4.8.5-44)] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> redis.StrictRedis(host='172.16.1.51', port=7000, db=0)
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
NameError: name 'redis' is not defined
>>> import redis #导入redis
## 链接redis
>>> redis.StrictRedis(host='172.16.1.52', port=6379, db=0,password='123')
Redis<ConnectionPool<Connection<host=172.16.1.52,port=6379,db=0>>>
>>> redis.StrictRedis(host='172.16.1.52', port=6379, db=0,password='123').get('name')
>>> redis.StrictRedis(host='172.16.1.52', port=6379, db=0,password='123').get('name')
b'wxk'
#设置redis连接变量
>>> r=redis.StrictRedis(host='172.16.1.52', port=6379, db=0,password='123')
>>> r.get('name')
b'wxk'
>>> r.set('age','18')
True
>>> r.get('age')
b'18'
>>> r.info('replication')
#导入Redis Sentinel模块
from redis.sentinel import Sentinel
#安装Python连接Redis Cluster驱动
[root@db01 ~]# pip3 install redis-py-cluster
#导入Redis Cluster模块
>>> from rediscluster import RedisCluster
#设置登录redis集群变量
>>> startup_nodes = [{"host": "172.16.1.53", "port": "7004"}]
#设置连接变量
>>> rc = RedisCluster(startup_nodes=startup_nodes, decode_responses=True)
# 测试设置key（写入集群）
>>> rc.set("wxk", "whh")
True
#查询key
>>> print(rc.get("wxk"))
whh
Python连接单台Redis API
安装redis
#下载
[root@db01 src]# wget http://download.redis.io/releases/redis-3.2.12.tar.gz
#解压
[root@db01 src]# tar xf redis-3.2.12.tar.gz
#移动到指定目录
[root@db01 src]# mv redis-3.2.12 /application/
#做软链接
[root@db01 src]# ln -s /application/redis-3.2.12 /application/redis
#进入redis目录
[root@db01 src]# cd /application/redis
#编译
[root@db01 redis]# make
#添加环境变量
[root@db01 redis]# vim /etc/profile.d/redis.sh
export PATH="/application/redis/src:$PATH"
#创建配置文件存放目录
[root@db01 ~]# mkdir -p /data/6379
#编辑redis配置文件
[root@db01 ~]# vim /data/6379/redis.conf
port 6379
daemonize yes
pidfile /data/6379/redis.pid
logfile "/data/6379/redis.log"
dbfilename dump.rdb
dir /data/6379
protected-mode no
appendonly yes
requirepass zls
#启动redis
[root@db01 ~]# redis-server /data/6379/redis.conf
#连接redis
[root@db01 ~]# redis-cli -a zls
#设置key
127.0.0.1:6379> set name zls
OK
使用Python连接redis
#连接Python终端
[root@db01 ~]# python3
Python 3.6.4 (default, Apr 8 2019, 17:12:35)
[GCC 4.4.7 20120313 (Red Hat 4.4.7-4)] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>>
#导入redis模块
>>> import redis
#设置redis连接变量
>>> r = redis.StrictRedis(host='localhost', port=6379, db=0,password='zls')
#获取刚才创建的key
>>> r.get('name')
b'zls'
#创建一个key
>>> r.set('age', '18')
True
#退出Python终端
>>> quit()
#连接redis
[root@db01 ~]# redis-cli -a zls
#查看是否有刚才创建的key
127.0.0.1:6379> KEYS *
#查看age的值
127.0.0.1:6379> get age
"18"
Python连接Redis Sentinel API
一般在企业中，Redis是不会使用单台，大部分企业都是以集群的形式存在的，所以我们需要知道，
Python如何连接Redis集群的API，当然我们讲的集群，有Sentinel和Redis Cluster。
#启动Redis多实例
[root@db01 ~]# redis-server /data/6380/redis.conf
[root@db01 ~]# redis-server /data/6381/redis.conf
[root@db01 ~]# redis-server /data/6382/redis.conf
#启动Redis Sentinel
[root@db01 ~]# redis-sentinel /data/26380/sentinel.conf &
#连接python终端
[root@db01 ~]# python3
Python 3.6.4 (default, Apr 8 2019, 17:12:35)
[GCC 4.4.7 20120313 (Red Hat 4.4.7-4)] on linux
Type "help", "copyright", "credits" or "license" for more information.
#导入Redis Sentinel模块
>>> from redis.sentinel import Sentinel
#设置连接信息变量
>>> sentinel = Sentinel([('localhost', 26380)], socket_timeout=0.1)
#获取主库，从库信息
>>> sentinel.discover_master('mymaster')
>>> sentinel.discover_slaves('mymaster')
#配置读写分离，写节点
>>> master = sentinel.master_for('mymaster', socket_timeout=0.1,password="zls")
#配置读写分离，读节点
>>> slave = sentinel.slave_for('mymaster', socket_timeout=0.1,password="zls")
#读写分离测试key
>>> master.set('zls', 'handsome')
>>> slave.get('zls')
'handsome'
Python连接Redis Cluster
Redis Cluster的连接并操作（python2.7.2以上版本才支持redis cluster，我们选择的是3.6.4）
https://github.com/Grokzen/redis-py-cluster
#安装Python连接Redis Cluster驱动
[root@db01 ~]# pip3 install redis-py-cluster
Collecting redis-py-cluster
Downloading
https://files.pythonhosted.org/packages/6d/02/b2458f900496d1e573ada7ffd882efe62aeee992
eab1222411fe08aa5f75/redis-py-cluster-1.3.6.tar.gz
Collecting redis==2.10.6 (from redis-py-cluster)
Downloading
https://files.pythonhosted.org/packages/3b/f6/7a76333cf0b9251ecf49efff635015171843d9b9
77e4ffcf59f9c4428052/redis-2.10.6-py2.py3-none-any.whl (64kB)
100% |████████████████████████████████| 71kB 26kB/s
Installing collected packages: redis, redis-py-cluster
Found existing installation: redis 3.2.1
Uninstalling redis-3.2.1:
Successfully uninstalled redis-3.2.1
Running setup.py install for redis-py-cluster ... done
Successfully installed redis-2.10.6 redis-py-cluster-1.3.6
You are using pip version 9.0.1, however version 19.0.3 is available.
You should consider upgrading via the 'pip install --upgrade pip' command.
#启动Redis Cluster集群
[root@db01 ~]# redis-server /data/7000/redis.conf
[root@db01 ~]# redis-server /data/7001/redis.conf
[root@db01 ~]# redis-server /data/7002/redis.conf
[root@db01 ~]# redis-server /data/7003/redis.conf
[root@db01 ~]# redis-server /data/7004/redis.conf
[root@db01 ~]# redis-server /data/7005/redis.conf
#连接Python终端
[root@db01 ~]# python3
Python 3.6.4 (default, Apr 8 2019, 17:12:35)
[GCC 4.4.7 20120313 (Red Hat 4.4.7-4)] on linux
Type "help", "copyright", "credits" or "license" for more information.
#导入Redis Cluster模块
>>> from rediscluster import StrictRedisCluster
#设置登录redis集群变量
>>> startup_nodes = [{"host": "127.0.0.1", "port": "7000"}]
#设置连接变量
>>> rc = StrictRedisCluster(startup_nodes=startup_nodes, decode_responses=True)
#测试设置key
>>> rc.set("foo", "bar")
True
#查询key
>>> print(rc.get("foo"))
bar
