Linux下python3的安装以及redis的使用

python3的安装

上传Python-3.5.2.tar.xz软件到 /server/tools 中

解压 ：
tar xf   Python-3.5.2.tar.xz

编译安装
cd Python-3.5.2
./configure
make
make install

--------------------------
安装redis  for python驱动

cd /server/tools
unzip redis-py-master.zip

cd  redis-py-master
python3  setup.py install

安装集群驱动
cd /server/tools
unzip redis-py-cluster-unstable.zip
cd redis-py-cluster-unstable
python3  setup.py install


------------------------------------------
1、python3 连接单机redis：

import redis  
r = redis.StrictRedis(host='127.0.0.1', port=6379,password='123')
r.get("name")
r.set("name","123")


------------------------------------------------------------
----
sentinel模式：

>>> from redis.sentinel import Sentinel  
>>> sentinel = Sentinel([('127.0.0.1', 26380)], socket_timeout=0.1)  

>>> sentinel.discover_master('mymaster')  
>>> sentinel.discover_slaves('mymaster')  

配置读写分离：

>>> master = sentinel.master_for('mymaster', socket_timeout=0.1)  
>>> slave = sentinel.slave_for('mymaster', socket_timeout=0.1)  
>>> master.set('foo', 'bar')  
>>> slave.get('foo')  

------------------------------------------------------------------
cluster模式
------
(1) redis-py并没有提供redis-cluster的支持，去github找了一下，有个叫redis-py-cluster的源码，
但是和redis-py不是一个作者，地址为:https://github.com/Grokzen/redis-py-cluster
watch,star,fork还算可以。
----    
(2) 安装
   Latest stable release from pypi

$ pip install redis-py-cluster  
    or from source

$ python setup.py install
---
 (3) 使用

>>> from rediscluster import StrictRedisCluster  
>>> startup_nodes = [{"host": "127.0.0.1", "port": "7000"}]  
>>> rc = StrictRedisCluster(startup_nodes=startup_nodes, decode_responses=True)  
>>> rc.set("foo", "bar")  
True  
>>> print(rc.get("foo"))  
'bar'  



=-------------------------------------------
安装redis cluster

EPEL源安装ruby支持
yum install ruby rubygems -y

使用国内源
gem sources -a http://mirrors.aliyun.com/rubygems/
gem sources  --remove http://rubygems.org/
gem install redis -v 3.3.3


-------------------
准备集群环境：

2、集群节点准备

mkdir /nosql/700{0..5}

vim /nosql/7000/redis.conf

port 7000
daemonize yes
pidfile /nosql/7000/redis.pid
loglevel notice
logfile "/nosql/7000/redis.log"
dbfilename dump.rdb
dir /nosql/7000
protected-mode no
cluster-enabled yes
cluster-config-file nodes.conf
cluster-node-timeout 5000
appendonly yes


vim /nosql/7001/redis.conf
port 7001
daemonize yes
pidfile /nosql/7001/redis.pid
loglevel notice
logfile "/nosql/7001/redis.log"
dbfilename dump.rdb
dir /nosql/7001
protected-mode no
cluster-enabled yes
cluster-config-file nodes.conf
cluster-node-timeout 5000
appendonly yes


vim /nosql/7002/redis.conf
port 7002
daemonize yes
pidfile /nosql/7002/redis.pid
loglevel notice
logfile "/nosql/7002/redis.log"
dbfilename dump.rdb
dir /nosql/7002
protected-mode no
cluster-enabled yes
cluster-config-file nodes.conf
cluster-node-timeout 5000
appendonly yes



vim /nosql/7003/redis.conf
port 7003
daemonize yes
pidfile /nosql/7003/redis.pid
loglevel notice
logfile "/nosql/7003/redis.log"
dbfilename dump.rdb
dir /nosql/7003
protected-mode no
cluster-enabled yes
cluster-config-file nodes.conf
cluster-node-timeout 5000
appendonly yes



vim /nosql/7004/redis.conf
port 7004
daemonize yes
pidfile /nosql/7004/redis.pid
loglevel notice
logfile "/nosql/7004/redis.log"
dbfilename dump.rdb
dir /nosql/7004
protected-mode no
cluster-enabled yes
cluster-config-file nodes.conf
cluster-node-timeout 5000
appendonly yes


vim /nosql/7005/redis.conf
port 7005
daemonize yes
pidfile /nosql/7005/redis.pid
loglevel notice
logfile "/nosql/7005/redis.log"
dbfilename dump.rdb
dir /nosql/7005
protected-mode no
cluster-enabled yes
cluster-config-file nodes.conf
cluster-node-timeout 5000
appendonly yes


启动节点：

redis-server /nosql/7000/redis.conf
redis-server /nosql/7001/redis.conf
redis-server /nosql/7002/redis.conf
redis-server /nosql/7003/redis.conf
redis-server /nosql/7004/redis.conf
redis-server /nosql/7005/redis.conf



[root@db01 ~]# ps -ef |grep redis
root       8854      1  0 03:56 ?        00:00:00 redis-server *:7000 [cluster]     
root       8858      1  0 03:56 ?        00:00:00 redis-server *:7001 [cluster]     
root       8860      1  0 03:56 ?        00:00:00 redis-server *:7002 [cluster]     
root       8864      1  0 03:56 ?        00:00:00 redis-server *:7003 [cluster]     
root       8866      1  0 03:56 ?        00:00:00 redis-server *:7004 [cluster]     
root       8874      1  0 03:56 ?        00:00:00 redis-server *:7005 [cluster]  


3、将节点加入集群管理

redis-trib.rb create --replicas 1 127.0.0.1:7000 127.0.0.1:7001 \
127.0.0.1:7002 127.0.0.1:7003 127.0.0.1:7004 127.0.0.1:7005


4、集群状态查看

集群主节点状态
redis-cli -p 7000 cluster nodes | grep master
集群从节点状态
redis-cli -p 7000 cluster nodes | grep slave