具體就不做介紹了，直接開始安裝
準備環(huán)境：
使用2臺centos服務器，每臺機器上部署3個實例，集群為三個主節(jié)點與三個從節(jié)點： 第一臺 192.168.1.107:7000 192.168.1.107:7001 192.168.1.107:7002 第二臺 192.168.1.108:7003 192.168.1.108:7004 192.168.1.108:7005安裝配置：
192.168.1.107服務器
#yum -y install gcc zlib ruby rubygems #gem install redis #wget http://download.redis.io/releases/redis-3.2.8.tar.gz #tar -zxvf redis-3.2.8.tar.gz #cd redis-3.2.8 #make && make install 將 redis-trib.rb 復制到 /usr/local/bin 目錄下 #cp src/redis-trib.rb /usr/local/bin/ #mkdir -p /data/redis/{conf,data,logs} #cp redis.conf /data/redis/conf/redis-7000.conf #cp redis.conf /data/redis/conf/redis-7001.conf #cp redis.conf /data/redis/conf/redis-7002.conf配置內容如下(redis-7000.conf其它類同)：
daemonize yes pidfile /data/redis/data/redis-7000.pid port 7000 bind 192.168.1.107 unixsocket /data/redis/data/redis-7000.sock unixsocketperm 700 timeout 300 loglevel verbose logfile /data/redis/logs/redis-7000.log databases 16 dbfilename dump-7000.rdb dir /data/redis/data/ #aof持久化 appendonly yes appendfilename appendonly-7000.aof appendfsync everysec no-appendfsync-on-rewrite yes auto-aof-rewrite-percentage 80-100 auto-aof-rewrite-min-size 64mb lua-time-limit 5000 #集群配置 cluster-enabled yes cluster-config-file /data/redis/data/nodes-7000.conf cluster-node-timeout 5000同樣的在192.168.1.108上配置其它端口，配置后我們分別啟動
192.168.1.107主機 #redis-server /data/redis/conf/redis-7000.conf #redis-server /data/redis/conf/redis-7001.conf #redis-server /data/redis/conf/redis-7002.conf 192.168.1.108主機 #redis-server /data/redis/conf/redis-7003.conf #redis-server /data/redis/conf/redis-7004.conf #redis-server /data/redis/conf/redis-7005.conf分別在兩臺主機查看啟動進程與端口：
# ps -ef|grep redis root 4663 1 0 10:53 ? 00:00:09 redis-server 192.168.1.107:7000 [cluster] root 4667 1 0 10:53 ? 00:00:09 redis-server 192.168.1.107:7001 [cluster] root 5566 1 0 12:12 ? 00:00:06 redis-server 192.168.1.107:7002 [cluster] root 5611 5313 0 14:49 pts/1 00:00:00 grep redis # netstat -tnlp | grep redis tcp 0 0 192.168.1.107:7000 0.0.0.0:* LISTEN 4663/redis-server 1 tcp 0 0 192.168.1.107:7001 0.0.0.0:* LISTEN 4667/redis-server 1 tcp 0 0 192.168.1.107:7002 0.0.0.0:* LISTEN 5566/redis-server 1 tcp 0 0 192.168.1.107:17000 0.0.0.0:* LISTEN 4663/redis-server 1 tcp 0 0 192.168.1.107:17001 0.0.0.0:* LISTEN 4667/redis-server 1 tcp 0 0 192.168.1.107:17002 0.0.0.0:* LISTEN 5566/redis-server 1創(chuàng)建集群
redis-trib.rb命令介紹可以參考： http://weizijun.cn/2016/01/08/redis%20cluster%E7%AE%A1%E7%90%86%E5%B7%A5%E5%85%B7redis-trib-rb%E8%AF%A6%E8%A7%A3/ # redis-trib.rb create --replicas 1 192.168.1.107:7000 192.168.1.107:7001 192.168.1.107:7002 192.168.1.108:7003 192.168.1.108:7004 192.168.1.108:7005 >>> Creating cluster >>> Performing hash slots allocation on 6 nodes... Using 3 masters: 192.168.1.108:7003 192.168.1.107:7000 192.168.1.108:7004 Adding replica 192.168.1.107:7001 to 192.168.12.108:7003 Adding replica 192.168.1.108:7005 to 192.168.12.107:7000 Adding replica 192.168.1.107:7002 to 192.168.12.108:7004 M: d0ce4d4eb8c503267ffea606e90d1c537a83a22e 192.168.1.107:7000 slots:5461-10922 (5462 slots) master S: 24ca2753885db7f37c0e0077b1f43eb2b1a52e42 192.168.1.107:7001 replicates 8ee448821d5e757af73bab65861340e557b8cd14 S: 90c36924c71ae924b1179ff1a384c53e5ea2e484 192.168.1.107:7002 replicates 5a93221a3281f88f9984c24b6e1d6f08b3685c89 M: 8ee448821d5e757af73bab65861340e557b8cd14 192.168.1.108:7003 slots:0-5460 (5461 slots) master M: 5a93221a3281f88f9984c24b6e1d6f08b3685c89 192.168.1.108:7004 slots:10923-16383 (5461 slots) master S: a63176f88cbf58ab879421148da3b171f169540d 192.168.1.108:7005 replicates d0ce4d4eb8c503267ffea606e90d1c537a83a22e Can I set the above configuration? (type 'yes' to accept): yes #輸入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 192.168.1.107:7000) M: d0ce4d4eb8c503267ffea606e90d1c537a83a22e 192.168.1.107:7000 slots:5461-10922 (5462 slots) master M: 24ca2753885db7f37c0e0077b1f43eb2b1a52e42 192.168.1.107:7001 slots: (0 slots) master replicates 8ee448821d5e757af73bab65861340e557b8cd14 M: 90c36924c71ae924b1179ff1a384c53e5ea2e484 192.168.1.107:7002 slots: (0 slots) master replicates 5a93221a3281f88f9984c24b6e1d6f08b3685c89 M: 8ee448821d5e757af73bab65861340e557b8cd14 192.168.1.108:7003 slots:0-5460 (5461 slots) master M: 5a93221a3281f88f9984c24b6e1d6f08b3685c89 192.168.1.108:7004 slots:10923-16383 (5461 slots) master M: a63176f88cbf58ab879421148da3b171f169540d 192.168.1.108:7005 slots: (0 slots) master replicates d0ce4d4eb8c503267ffea606e90d1c537a83a22e [OK] All nodes agree about slots configuration. >>> Check for open slots... >>> Check slots coverage... [OK] All 16384 slots covered. #集群創(chuàng)建成功集群驗證
192.168.1.107的7002端口的節(jié)點寫入數(shù)據(jù)，在192.168.1.108的7005端口查詢，接方式為 redis-cli -h 192.168.31.245 -c -p 7002 ,加參數(shù) -C 可連接到集群，因為上面 redis.conf 將 bind 改為了ip地址，所以 -h 參數(shù)不可以省略。 # redis-cli -h 192.168.1.107 -c -p 7002 192.168.1.108:7003> set test01 "this is test01" OK 192.168.1.108:7003> # redis-cli -h 192.168.1.108 -c -p 7005 192.168.12.108:7005> get test01 -> Redirected to slot [1840] located at 192.168.12.108:7003 "this is test01" 說明集群運作正常。Redis 集群會把數(shù)據(jù)存在一個 master 節(jié)點，然后在這個 master 和其對應的salve 之間進行數(shù)據(jù)同步。當讀取數(shù)據(jù)時，也根據(jù)一致性哈希算法到對應的 master 節(jié)點獲取數(shù)據(jù)。只有當一個master 掛掉之后，才會啟動一個對應的 salve 節(jié)點，充當 master 。
需要注意的是：必須要3個或以上的主節(jié)點，否則在創(chuàng)建集群時會失敗，并且當存活的主節(jié)點數(shù)小于總節(jié)點數(shù)的一半時，整個集群就無法提供服務了。
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