·聲明
1，已官網中文教程為基礎，邊看邊學，結合環境現狀搭建。
2，哥對Ruby不熱愛、不熟悉、不感冒，所述內容如有疑義請諒解。
3，3.0官說集群還在測試中，其實用用也還算馬馬虎虎，對外集群API真心少，望有識之士能夠出力。
·准備材料
VM9，CentOS 6.4_x86_64（2.6+），SecureCRT，CentOS-6.4-x86_64-bin-DVD1.iso
redis官網：redis-3.0.0-beta1.tar.gz
ruby官網：rubygems-2.0.7.zip
rubygem官網：redis-3.0.7.gem
·下鍋
1，把一些基礎包裝一下，后面會用到
service iptables stop
放入DVD1-
yum install –y gcc*
yum install –y ruby
yum install –y ruby-rdoc
2，裝redis
tar -xvf redis-3.0.0-beta1.tar.gz
cd redis-3.0.0-beta
make
make install
ll /usr/local/bin
3，配置集群（假定 $REDIS_HOME=/root/soft/redis，就像ORACLE_HOME一樣）
cd $REDIS_HOME
mkdir cluster-test
cd cluster-test
mkdir 7000 7001 7002 7003 7004 7005
vim redis.conf，修改內容如下：
port 7000 個性化
cluster-enabled yes cluster-config-file nodes.7000.conf 個性化 cluster-node-timeout 5000 appendonly yes appendfilename "appendonly.7000.aof" 個性化 deamonize yes pidfile 個性化 log 個性化
cp ../redis.conf ./7000
cp ../redis.conf ./7001
cp ../redis.conf ./7002
cp ../redis.conf ./7003
cp ../redis.conf ./7004
cp ../redis.conf ./7005
cp /usr/local/bin/redis-server ./7000
cp /usr/local/bin/redis-server ./7001
cp /usr/local/bin/redis-server ./7002
cp /usr/local/bin/redis-server ./7003
cp /usr/local/bin/redis-server ./7004
cp /usr/local/bin/redis-server ./7005
/root/soft/redis/cluster-test/redis-server /root/soft/redis/cluster-test/7000/redis.conf
/root/soft/redis/cluster-test/redis-server /root/soft/redis/cluster-test/7001/redis.conf
/root/soft/redis/cluster-test/redis-server /root/soft/redis/cluster-test/7002/redis.conf
/root/soft/redis/cluster-test/redis-server /root/soft/redis/cluster-test/7003/redis.conf
/root/soft/redis/cluster-test/redis-server /root/soft/redis/cluster-test/7004/redis.conf
/root/soft/redis/cluster-test/redis-server /root/soft/redis/cluster-test/7005/redis.conf
如果需要看一看：ps –ef|grep redis
如果需要殺一殺：ps -ef|grep redis|egrep -v grep|awk -F ' ' '{print $2}'|xargs kill -9
4，配置ruby集群腳本
cd /root/soft/rubygems
ruby setup.rb
到redis-3.0.7.gem路徑下
gem install -l redis（不用L的話，走ruby官網，95%被WALL，你懂得，自己改source吧）
./redis-trib.rb create --replicas 1 127.0.0.1:7000 127.0.0.1:7002 127.0.0.3:7003 127.0.0.1:7004 127.0.0.1:7005 127.0.0.1:7005（半路記得“yes"一下）
>>> Creating cluster Connecting to node 127.0.0.1:7000: OK 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 >>> Performing hash slots allocation on 6 nodes... Using 3 masters: 127.0.0.1:7000 127.0.0.1:7001 127.0.0.1:7002 127.0.0.1:7000 replica #1 is 127.0.0.1:7003 127.0.0.1:7001 replica #1 is 127.0.0.1:7004 127.0.0.1:7002 replica #1 is 127.0.0.1:7005 M: bc66d90ca24eb6b69a3b375a4e242fef00de2052 127.0.0.1:7000 slots:0-5460 (5461 slots) master M: bc66d90ca24eb6b69a3b375a4e242fef00de2052 127.0.0.1:7001 slots:5461-10921 (5461 slots) master M: bc66d90ca24eb6b69a3b375a4e242fef00de2052 127.0.0.1:7002 slots:10922-16383 (5462 slots) master S: bc66d90ca24eb6b69a3b375a4e242fef00de2052 127.0.0.1:7003 replicates bc66d90ca24eb6b69a3b375a4e242fef00de2052 S: bc66d90ca24eb6b69a3b375a4e242fef00de2052 127.0.0.1:7004 replicates bc66d90ca24eb6b69a3b375a4e242fef00de2052 S: bc66d90ca24eb6b69a3b375a4e242fef00de2052 127.0.0.1:7005 replicates bc66d90ca24eb6b69a3b375a4e242fef00de2052 Can I set the above configuration? (type 'yes' to accept): yes >>> Nodes configuration updated >>> Sending CLUSTER MEET messages to join the cluster Waiting for the cluster to join... >>> Performing Cluster Check (using node 127.0.0.1:7000) M: 75bab28893c3536aecdb9879df97db89b24ce21e 127.0.0.1:7000 slots:5461-10921 (5461 slots) master M: cfc344721cad8a5ddb7a8d675eb3a4d6e5b9d1c1 127.0.0.1:7002 slots:10922-16383 (5462 slots) master M: 01b3977a3f592fd1538e8c83f86bbba37d0c1058 127.0.0.3:7003 slots:0-5460 (5461 slots) master M: df59fce238a1c538933bdc170edb27835d0b7cc7 127.0.0.1:7004 slots: (0 slots) master replicates 01b3977a3f592fd1538e8c83f86bbba37d0c1058 M: b6bdb2d309aa7f0b810288f24e975230419f25b1 127.0.0.1:7005 slots: (0 slots) master replicates 75bab28893c3536aecdb9879df97db89b24ce21e M: b6bdb2d309aa7f0b810288f24e975230419f25b1 127.0.0.1:7005 slots: (0 slots) master replicates cfc344721cad8a5ddb7a8d675eb3a4d6e5b9d1c1 [OK] All nodes agree about slots configuration. >>> Check for open slots... >>> Check slots coverage... [OK] All 16384 slots covered.
redis-cli -c -p 7000
127.0.0.1:7000> set b c -> Redirected to slot [3300] located at 127.0.0.1:7003 OK 127.0.0.1:7003> set hello world OK 127.0.0.1:7003> get foo -> Redirected to slot [12182] located at 127.0.0.1:7002 (nil) 127.0.0.1:7002> get hello -> Redirected to slot [866] located at 127.0.0.1:7003 "world" 127.0.0.1:7003> get b "c" 127.0.0.1:7003>
·FAQ
*** ERROR: Invalid configuration for cluster creation. *** Redis Cluster requires at least 3 master nodes. *** This is not possible with 4 nodes and 1 replicas per node. *** At least 6 nodes are required.
·Redis官說，至少3+3，還延續着Master-Slave的設計理念，這點上個人覺得Cassandra的一致性確實了得。
Either the node already knows other nodes
·因為報錯是ruby報的，不太能夠理解其意思，因為我之前做了些單機壓測，可能直接疊上集群會有垃圾數據，所以把/var/db/和/var/log/下能清空的都清空了。
[13321] 09 Mar 08:09:24.290 # Handshake error: we already know node bc66d90ca24eb6b69a3b375a4e242fef00de2052, updating the address if needed.
·同樣道理，ruby報的錯，一開始一直在join被我ctrl+c之后開始報錯，用上面的方法無果。把所有app目錄清空然后redis重裝。大家測試時，最后事先vmware快照一下或者redis現網數據備份一下。
·OK，自己爽一下吧