1.环境确认

a.系统版本查看

[hadoop@p168 ~]$ cat /etc/redhat-release

CentOS Linux release 7.2.1511 (Core)

b.安装依赖

[hadoop@p168 ~]$ sudo yum -y install tcl ruby tree

2.安装redis 3.0.6

[hadoop@p168 ~]#cd /usr/local/

[hadoop@p168 ~]#wget http://download.redis.io/redis-stable.tar.gz

[hadoop@p168 ~]#tar xzf redis-stable.tar.gz

[hadoop@p168 ~]#cd redis-stable

[hadoop@p168 ~]#make

[hadoop@p168 ~]#make test

[hadoop@p168 ~]#make install

3.建立节点配置目录

[hadoop@p168 ~]#mkdir /etc/redis

[hadoop@p168 ~]#mkdir /etc/redis/7000

4.建立节点配置文件

a.配置7000节点,先复制redis-server与初始配置文件redis.conf,然后修改redis.conf,使其适合集群

[hadoop@p168 ~]#cp /usr/local/redis-stable/src/redis-server /usr/local/redis-stable/redis.conf /etc/redis/7000

修改redis.conf,主要修改内容如下:

[hadoop@p168 ~]#vim /etc/redis/7000/redis.conf

#/etc/redis/7000/redis.conf

port 7000

daemonize yes

pidfile /var/run/redis_7000.pid

cluster-enabled yes

cluster-config-file nodes.conf

logfile "/var/log/redisd7000.log"

dir /etc/redis/7000/

cluster-node-timeout 5000

appendonly yes

b.复制其他节点配置文件

#生成7001配置,其他类似

cp -r 7000 7001

sed -i "s/7000/7001/g" 7001/redis.conf

cat 7001/redis.conf |grep 7001

5.配置节点开机启动

修改redisd7000的启动脚本,7001~7005类似

[hadoop@p168 ~]#cp /usr/local/redis-stable/utils/redis_init_script /etc/init.d/redisd7000

[hadoop@p168 ~]#vim /etc/init.d/redisd7000

#!/bin/sh

#chkconfig: 2345 90 10

#description: Redis is a persistent key-value database

# Simple Redis init.d script conceived to work on Linux systems

# as it does use of the /proc filesystem.

REDISPORT=7000

#EXEC=/usr/local/bin/redis-server

EXEC=/etc/redis/${REDISPORT}/redis-server

CLIEXEC=/usr/local/bin/redis-cli

PIDFILE=/var/run/redis_${REDISPORT}.pid

#CONF="/etc/redis/${REDISPORT}.conf"

CONF="/etc/redis/${REDISPORT}/redis.conf"

主要修改内容包括如下三点:

a.加入前三行即

#!/bin/sh

#chkconfig: 2345 90 10

#description: Redis is a persistent key-value database

b.修改端口,即

REDISPORT=7000

c.指定EXEC与CONF即

EXEC=/etc/redis/${REDISPORT}/redis-server

CONF="/etc/redis/${REDISPORT}/redis.conf"

其他的不动,略

复制生成其他启动脚本

#生成7001脚本,其他类似

cp /etc/init.d/redisd7000 /etc/init.d/redisd7001

sed -i "s/7000/7001/g" /etc/init.d/redisd7001

cat /etc/init.d/redisd7001 |grep 7001

#设置为开机自启动服务器,其他服务类似

[hadoop@p168 ~]#chkconfig redisd7000 on

确认配置文件,重启前应该是如下状态

[root@p161 ~]# ls /etc/init.d/ |grep redis

redisd7000

redisd7001

redisd7002

redisd7003

redisd7004

redisd7005

注:以上文件是6个服务的自动启动脚本

[root@p161 ~]# tree /etc/redis

/etc/redis

├── 7000

│ ├── redis.conf

│ └── redis-server

├── 7001

│ ├── redis.conf

│ └── redis-server

├── 7002

│ ├── redis.conf

│ └── redis-server

├── 7003

│ ├── redis.conf

│ └── redis-server

├── 7004

│ ├── redis.conf

│ └── redis-server

├── 7005

│ ├── redis.conf

│ └── redis-server

注:以上目录是各服务器的redis-server可执行程序与其配置文件,若没有tree命令,先 yum install -y tree

[hadoop@p168 ~]# reboot

重启以后服务应该就启动了,若有需要可以用如下命令来启动或停止服务了

service redisd7000 start

service redisd7000 stop

6.安装redis接口

#rubygems.org被墙,换ruby.taobao.org

gem sources --remove https://rubygems.org/

gem sources -a https://ruby.taobao.org/

gem install redis

7.建立集群

[root@p161 redis-stable]# /usr/local/redis-stable/src/redis-trib.rb create --replicas 1 192.168.1.161:7000 192.168.1.161:7001 192.168.1.161:7002 192.168.1.161:7003 192.168.1.161:7004 192.168.1.161:7005

>>> Creating cluster

>>> Performing hash slots allocation on 6 nodes...

Using 3 masters:

192.168.1.161:7000

192.168.1.161:7001

192.168.1.161:7002

Adding replica 192.168.1.161:7003 to 192.168.1.161:7000

Adding replica 192.168.1.161:7004 to 192.168.1.161:7001

Adding replica 192.168.1.161:7005 to 192.168.1.161:7002

M: 5f62052fb63b330ae39e35e35fdb5cd5d3f3d013 192.168.1.161:7000

slots:0-5460 (5461 slots) master

M: 925478713e7a73c986dc0c07c01dd7bd63c20f47 192.168.1.161:7001

slots:5461-10922 (5462 slots) master

M: d81817cb1d01695e552ea2fde2a5ac62772d2a08 192.168.1.161:7002

slots:10923-16383 (5461 slots) master

S: 26906db48fba3321374c9d1fa0f3b55730c49ae1 192.168.1.161:7003

replicates 5f62052fb63b330ae39e35e35fdb5cd5d3f3d013

S: 94077768fe3ff601722f2970c65b1604c6e714df 192.168.1.161:7004

replicates 925478713e7a73c986dc0c07c01dd7bd63c20f47

S: 9259eff3d7d40449830e2de9561e6c77a490f4e0 192.168.1.161:7005

replicates d81817cb1d01695e552ea2fde2a5ac62772d2a08

Can I set the above configuration? (type 'yes' to accept): yes

>>> Nodes configuration updated

>>> Assign a different config epoch to each node

>>> Sending CLUSTER MEET messages to join the cluster

Waiting for the cluster to join....

>>> Performing Cluster Check (using node 192.168.1.161:7000)

M: 5f62052fb63b330ae39e35e35fdb5cd5d3f3d013 192.168.1.161:7000

slots:0-5460 (5461 slots) master

M: 925478713e7a73c986dc0c07c01dd7bd63c20f47 192.168.1.161:7001

slots:5461-10922 (5462 slots) master

M: d81817cb1d01695e552ea2fde2a5ac62772d2a08 192.168.1.161:7002

slots:10923-16383 (5461 slots) master

M: 26906db48fba3321374c9d1fa0f3b55730c49ae1 192.168.1.161:7003

slots: (0 slots) master

replicates 5f62052fb63b330ae39e35e35fdb5cd5d3f3d013

M: 94077768fe3ff601722f2970c65b1604c6e714df 192.168.1.161:7004

slots: (0 slots) master

replicates 925478713e7a73c986dc0c07c01dd7bd63c20f47

M: 9259eff3d7d40449830e2de9561e6c77a490f4e0 192.168.1.161:7005

slots: (0 slots) master

replicates d81817cb1d01695e552ea2fde2a5ac62772d2a08

[OK] All nodes agree about slots configuration.

>>> Check for open slots...

>>> Check slots coverage...

[OK] All 16384 slots covered.

8.确认集群状态

[root@p169 ~]# /usr/local/redis-stable/src/redis-trib.rb check 192.168.1.161:7000

>>> Performing Cluster Check (using node 192.168.1.161:7000)

M: e3b5e66e28c015552625b7f1b52538da98d16c96 192.168.1.161:7000

slots:0-5460 (5461 slots) master

1 additional replica(s)

S: 6dacc2604f22692a9291e3e6e82bee492fbb0817 192.168.1.161:7003

slots: (0 slots) slave

replicates e3b5e66e28c015552625b7f1b52538da98d16c96

M: 5aa111c270091b474feaf0f11aa8a2e3ff2a5ccc 192.168.1.161:7001

slots:5461-10922 (5462 slots) master

1 additional replica(s)

S: 8252ac10b98a2f8d78c6f1b488610b8f789548db 192.168.1.161:7005

slots: (0 slots) slave

replicates 6aa2e0cb813a6ed451437ef4203aa669d42ac50c

S: 1e179fa5c399dba3eed3e592c5855cf600a648a5 192.168.1.161:7004

slots: (0 slots) slave

replicates 5aa111c270091b474feaf0f11aa8a2e3ff2a5ccc

M: 6aa2e0cb813a6ed451437ef4203aa669d42ac50c 192.168.1.161:7002

slots:10923-16383 (5461 slots) master

1 additional replica(s)

[OK] All nodes agree about slots configuration.

>>> Check for open slots...

>>> Check slots coverage...

[OK] All 16384 slots covered.

有错误的话,修复集群

[root@p161 ~]# /usr/local/redis-stable/src/redis-trib.rb fix 192.168.1.161:7000

若要确认输入yes

[root@p161 ~]# ps -ef | grep redis

root 26530 13340 0 12:07 pts/1 00:00:03 ./7000/redis-server *:7000 [cluster]

root 26914 26538 0 12:07 pts/3 00:00:03 ./7001/redis-server *:7001 [cluster]

root 27430 13649 0 12:10 pts/2 00:00:03 ./7002/redis-server *:7002 [cluster]

root 27441 26922 0 12:10 pts/4 00:00:03 ./7003/redis-server *:7003 [cluster]

root 27732 27448 0 12:10 pts/5 00:00:03 ./7004/redis-server *:7004 [cluster]

root 28029 27740 0 12:11 pts/6 00:00:02 ./7005/redis-server *:7005 [cluster]

root 28572 5882 0 12:23 pts/0 00:00:00 redis-cli -c -p 7000

root 30085 28867 0 12:35 pts/7 00:00:00 grep --color=auto redis

[root@p161 ~]# netstat -tnlp | grep redis

tcp 0 0 0.0.0.0:17000 0.0.0.0:* LISTEN 26530/./7000/redis-

tcp 0 0 0.0.0.0:17001 0.0.0.0:* LISTEN 26914/./7001/redis-

tcp 0 0 0.0.0.0:17002 0.0.0.0:* LISTEN 27430/./7002/redis-

tcp 0 0 0.0.0.0:17003 0.0.0.0:* LISTEN 27441/./7003/redis-

tcp 0 0 0.0.0.0:17004 0.0.0.0:* LISTEN 27732/./7004/redis-

tcp 0 0 0.0.0.0:17005 0.0.0.0:* LISTEN 28029/./7005/redis-

tcp 0 0 0.0.0.0:7000 0.0.0.0:* LISTEN 26530/./7000/redis-

tcp 0 0 0.0.0.0:7001 0.0.0.0:* LISTEN 26914/./7001/redis-

tcp 0 0 0.0.0.0:7002 0.0.0.0:* LISTEN 27430/./7002/redis-

tcp 0 0 0.0.0.0:7003 0.0.0.0:* LISTEN 27441/./7003/redis-

tcp 0 0 0.0.0.0:7004 0.0.0.0:* LISTEN 27732/./7004/redis-

tcp 0 0 0.0.0.0:7005 0.0.0.0:* LISTEN 28029/./7005/redis-

tcp6 0 0 :::17000 :::* LISTEN 26530/./7000/redis-

tcp6 0 0 :::17001 :::* LISTEN 26914/./7001/redis-

tcp6 0 0 :::17002 :::* LISTEN 27430/./7002/redis-

tcp6 0 0 :::17003 :::* LISTEN 27441/./7003/redis-

tcp6 0 0 :::17004 :::* LISTEN 27732/./7004/redis-

tcp6 0 0 :::17005 :::* LISTEN 28029/./7005/redis-

tcp6 0 0 :::7000 :::* LISTEN 26530/./7000/redis-

tcp6 0 0 :::7001 :::* LISTEN 26914/./7001/redis-

tcp6 0 0 :::7002 :::* LISTEN 27430/./7002/redis-

tcp6 0 0 :::7003 :::* LISTEN 27441/./7003/redis-

tcp6 0 0 :::7004 :::* LISTEN 27732/./7004/redis-

tcp6 0 0 :::7005 :::* LISTEN 28029/./7005/redis-

9.打开防火墙端口

[root@p161 ~]# firewall-cmd --zone=public --add-port=7000-7005/tcp --permanent

success

[root@p161 ~]#firewall-cmd --reload

success

10.访问测试

[root@p161 redis-stable]#redis-cli -c -p 7000

127.0.0.1:7000> cluster info

cluster_state:ok

cluster_slots_assigned:16384

cluster_slots_ok:16384

cluster_slots_pfail:0

cluster_slots_fail:0

cluster_known_nodes:6

cluster_size:3

cluster_current_epoch:6

cluster_my_epoch:1

cluster_stats_messages_sent:1248

cluster_stats_messages_received:1248

127.0.0.1:7000> cluster nodes

6dacc2604f22692a9291e3e6e82bee492fbb0817 192.168.1.161:7003 slave e3b5e66e28c015552625b7f1b52538da98d16c96 0 1451399924770 4 connected

5aa111c270091b474feaf0f11aa8a2e3ff2a5ccc 192.168.1.161:7001 master - 0 1451399923768 2 connected 5461-10922

8252ac10b98a2f8d78c6f1b488610b8f789548db 192.168.1.161:7005 slave 6aa2e0cb813a6ed451437ef4203aa669d42ac50c 0 1451399922766 6 connected

1e179fa5c399dba3eed3e592c5855cf600a648a5 192.168.1.161:7004 slave 5aa111c270091b474feaf0f11aa8a2e3ff2a5ccc 0 1451399925772 5 connected

e3b5e66e28c015552625b7f1b52538da98d16c96 192.168.1.161:7000 myself,master - 0 0 1 connected 0-5460

6aa2e0cb813a6ed451437ef4203aa669d42ac50c 192.168.1.161:7002 master - 0 1451399926776 3 connected 10923-16383

127.0.0.1:7000>

11.python测试

先安装pip install redis-py-cluster

注意在集群中 pip install redis安装的redis会报错!!!

from rediscluster import StrictRedisCluster
startup_nodes = [{"host": "192.168.1.161", "port": "7000"}]
rc = StrictRedisCluster(startup_nodes=startup_nodes, decode_responses=True)
rc.set("blog", "http://blog.csdn.net/dgatiger")
print rc.get('blog')

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