建立6個redis節點，其中3個為主節點，3個為從節點。

redis節點的ip和埠對應關係如下：

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

下載redis3.0.4。（2.*不支援叢集模式）

官網下載地址：http://download.redis.io/releases/redis-3.0.4.tar.gz

安裝redis

        若伺服器已聯網則通過下面命令進行安裝，否則就通過官網下載地址下載上傳到伺服器。（我安裝在/usr/local/src/目錄下）

#下載
[[email protected]
 
 src]# wget http://download.redis.io/releases/redis-3.0.4.tar.gz
[[email protected] src]# tar zxvf redis-3.0.4.tar.gz
[[email protected] src]# cd redis-3.0.4
#如果不加引數,linux下會報錯
[[email protected] src]# make MALLOC=libc
[[email protected] src]# make install

        測試redis是否安裝成功。

#啟動redis
[[email protected]
 
 redis-3.0.4]# src/redis-server
#關閉redis
[[email protected] redis-3.0.4]# src/redis-cli shutdown

        成功後顯示如下：

        測試redis：

[[email protected] redis-3.0.4]# src/redis-cli 
127.0.0.1:6379> get foo
"bar"
127.0.0.1:6379> 
[[email protected] redis-3.0.4]# src/redis-cli 
127.0.0.1:6379> set foo csdn
OK
127.0.0.1:6379> get foo
"csdn"
127.0.0.1:6379> 
 

        關閉redis。

redis cluster叢集搭建

1：建立叢集所需目錄

[[email protected] cluster]# mkdir /usr/local/src/cluster
[[email protected] src]# cd cluster/
[[email protected] cluster]# mkdir 7001
[[email protected] cluster]# cp /usr/local/src/redis-3.0.4/redis.conf /usr/local/src/cluster/7001/
[[email protected] cluster]# cp /usr/local/src/redis-3.0.4/src/redis-server /usr/local/src/cluster/7001/
[[email protected] cluster]# vi 7001/redis.conf

        修改配置檔案中的下面選項

port 7001
daemonize yes
cluster-enabled yes
cluster-config-file nodes.conf
cluster-node-timeout 5000
appendonly yes

        修改完redis.conf配置檔案中的配置項後，執行下面命令：

[[email protected] cluster]# cp -r 7001/ 7002
[[email protected] cluster]# cp -r 7001/ 7003
[[email protected] cluster]# cp -r 7001/ 7004
[[email protected] cluster]# cp -r 7001/ 7005
[[email protected] cluster]# cp -r 7001/ 7006

        注意：複製完資料夾後，修改每個資料夾下的redis.conf檔案中的port配置項。

2：建立啟動指令碼：

[[email protected] cluster]# vi redis-start.sh 

cd /usr/local/src/cluster/7001/
redis-server redis.conf
cd /usr/local/src/cluster/7002/
redis-server redis.conf
cd /usr/local/src/cluster/7003/
redis-server redis.conf
cd /usr/local/src/cluster/7004/
redis-server redis.conf
cd /usr/local/src/cluster/7005/
redis-server redis.conf
cd /usr/local/src/cluster/7006/
redis-server redis.conf

        儲存啟動指令碼後，授予許可權：

#給sh檔案授權許可權
[[email protected] cluster]# chmod +x redis-start.sh 
#啟動所有redis節點
[[email protected] cluster]# ./redis-start.sh 

3：執行redis的建立叢集命令建立叢集

[[email protected] cluster]# cd /usr/local/src/redis-3.0.4/src/
[[email protected] src]# ./redis-trib.rb create --replicas 1 127.0.0.1:7001 127.0.0.1:7002 127.0.0.1:7003 127.0.0.1:7004 127.0.0.1:7005 127.0.0.1:7006

3.1執行上面的命令的時候會報錯，因為是執行的ruby的指令碼，需要ruby的環境
錯誤內容：/usr/bin/env: ruby: No such file or directory
所以需要安裝ruby的環境，這裡推薦使用yum install ruby安裝

[[email protected] cluster]# yum install ruby

3.2然後再執行第步的建立叢集命令，還會報錯，提示缺少rubygems元件
錯誤內容：
./redis-trib.rb:24:in `require': no such file to load -- rubygems (LoadError)
from ./redis-trib.rb:24

[[email protected] cluster]# yum install rubygems

3.3再次執行第步的命令，還會報錯，提示不能載入redis，是因為缺少redis的介面
錯誤內容：

/usr/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `gem_original_require': no such file to load -- redis (LoadError)
from /usr/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `require'
from ./redis-trib.rb:25

[[email protected] cluster]# gem install redis

這裡可能無法安裝,因為無法連線gem伺服器：

[[email protected] src]# gem install redis --version 3.0.0  
ERROR:  Could not find a valid gem 'redis' (= 3.0.0) in any repository
ERROR:  While executing gem ... (Gem::RemoteFetcher::FetchError)

需要手工下載並安裝：（下載連結：http://download.csdn.net/detail/ltr15036900300/9172823）

gem install -l ./redis-3.2.1.gem

3.4再次執行第步的命令，正常執行

[[email protected] src]# ./redis-trib.rb create --replicas 1 127.0.0.1:7001 127.0.0.1:7002 127.0.0.1:7003 127.0.0.1:7004 127.0.0.1:7005 127.0.0.1:7006

輸入yes，然後配置完成。
[[email protected] src]# ./redis-trib.rb  create --replicas 1 127.0.0.1:7001 127.0.0.1:7002 127.0.0.1:7003 127.0.0.1:7004 127.0.0.1:7005 127.0.0.1:7000
>>> Creating cluster
Connecting to node 127.0.0.1:7001: OK
Connecting to node 127.0.0.1:7002: OK
Connecting to node 127.0.0.1:7003: OK
Connecting to node 127.0.0.1:7004: OK
Connecting to node 127.0.0.1:7005: OK
Connecting to node 127.0.0.1:7006: OK
>>> Performing hash slots allocation on 6 nodes...
Using 3 masters:
127.0.0.1:7001
127.0.0.1:7002
127.0.0.1:7003
Adding replica 127.0.0.1:7004 to 127.0.0.1:7001
Adding replica 127.0.0.1:7005 to 127.0.0.1:7002
Adding replica 127.0.0.1:7006 to 127.0.0.1:7003
M: 2022f24d581b4a7c3342e3245c32927cbd5ec16d 127.0.0.1:7001
   slots:0-5460 (5461 slots) master
M: 37b7008f80f8c21a698da8cb1f1b32db8c0c415c 127.0.0.1:7002
   slots:5461-10922 (5462 slots) master
M: ac6dc5fa96e856b34c1ba4c3814394e4ebb698dd 127.0.0.1:7003
   slots:10923-16383 (5461 slots) master
S: b5b76d70bbb0dbf3e7df8a38f1259e95e2054721 127.0.0.1:7004
   replicates 2022f24d581b4a7c3342e3245c32927cbd5ec16d
S: 6881f8fef9c25da486f320ebf2ead39c1502db4c 127.0.0.1:7005
   replicates 37b7008f80f8c21a698da8cb1f1b32db8c0c415c
S: f090526d32cced97731eef2a2e1722a7bac7d9ea 127.0.0.1:7006
   replicates ac6dc5fa96e856b34c1ba4c3814394e4ebb698dd
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 127.0.0.1:7001)
M: 2022f24d581b4a7c3342e3245c32927cbd5ec16d 127.0.0.1:7001
   slots:0-5460 (5461 slots) master
M: 37b7008f80f8c21a698da8cb1f1b32db8c0c415c 127.0.0.1:7002
   slots:5461-10922 (5462 slots) master
M: ac6dc5fa96e856b34c1ba4c3814394e4ebb698dd 127.0.0.1:7003
   slots:10923-16383 (5461 slots) master
M: b5b76d70bbb0dbf3e7df8a38f1259e95e2054721 127.0.0.1:7004
   slots: (0 slots) master
   replicates 2022f24d581b4a7c3342e3245c32927cbd5ec16d
M: 6881f8fef9c25da486f320ebf2ead39c1502db4c 127.0.0.1:7005
   slots: (0 slots) master
   replicates 37b7008f80f8c21a698da8cb1f1b32db8c0c415c
M: f090526d32cced97731eef2a2e1722a7bac7d9ea 127.0.0.1:7006
   slots: (0 slots) master
   replicates ac6dc5fa96e856b34c1ba4c3814394e4ebb698dd
[OK] All nodes agree about slots configuration.
>>> Check for open slots...
>>> Check slots coverage...
[OK] All 16384 slots covered.

4：redis-cli命令進入叢集環境

[[email protected] cluster]# redis-cli -c -p 7001

參考文章：