centos 安装 redis3.2.9

目前线上使用2.8.4版本的，一直很稳定，但是数据量越来越大，所以想升级到支持集群的3.X版本

特此记录安装过程

下载安装

cd /soft （我习惯放在这个目录下）

wget http://download.redis.io/releases/redis-3.2.9.tar.gz

tar xzf redis-3.2.9.tar.gz
cd redis-3.2.9

make && make install

依赖项

yum install automake autoconf ruby rubygems -y

创建六个实例

实例目录

mkdir -p /usr/local/cluster

mkdir -p /usr/local/cluster/6379

mkdir -p /usr/local/cluster/6380

mkdir -p /usr/local/cluster/6381

mkdir -p /usr/local/cluster/6382

mkdir -p /usr/local/cluster/6383

mkdir -p /usr/local/cluster/6384

修改配置文件

cp /soft/redis-3.2.9/redis.conf  /usr/local/cluster/6379/

打开redis.conf并修改（注意不同文件夹下端口都不一样）

所有port都要修改（一般cp过来的都是6379，可以根据6379查找、修改）
daemonize yes
cluster-enabled yes
cluster-config-file nodes.conf
cluster-node-timeout 5000
appendonly ye

每个文件夹下都一样

启动实例

cd 6379

redis-server redis.conf

其他同理

所有实例启动成功

root      7607     1  0 21:32 ?        00:00:02 redis-server 127.0.0.1:6379 [cluster]root      7723     1  0 21:33 ?        00:00:02 redis-server 127.0.0.1:6380 [cluster]root      7748     1  0 21:33 ?        00:00:02 redis-server 127.0.0.1:6381 [cluster]root      7775     1  0 21:33 ?        00:00:02 redis-server 127.0.0.1:6382 [cluster]root      7786     1  0 21:33 ?        00:00:02 redis-server 127.0.0.1:6383 [cluster]root      7847     1  0 21:33 ?        00:00:02 redis-server 127.0.0.1:6384 [cluster]

配置集群

cd /soft/redis-3.2.9/src

./redis-trib.rb  create --replicas 1 127.0.0.1:6379 127.0.0.1:6380 127.0.0.1:6381 127.0.0.1:6382 127.0.0.1:6383 127.0.0.1:6384

如果报以下错误：

/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

则需要安装redis和ruby的接口

gem install redis

安装好后继续执行上面命令，提示输入yes即可

>>> Creating cluster>>> Performing hash slots allocation on 6 nodes...Using 3 masters:127.0.0.1:6379127.0.0.1:6380127.0.0.1:6381Adding replica 127.0.0.1:6382 to 127.0.0.1:6379Adding replica 127.0.0.1:6383 to 127.0.0.1:6380Adding replica 127.0.0.1:6384 to 127.0.0.1:6381M: c274b5d0921e59a50838afd5d2975f1ead774aa0 127.0.0.1:6379   slots:0-5460 (5461 slots) masterM: 515b30be975005a102837fd75298ad4ec87cd2e7 127.0.0.1:6380   slots:5461-10922 (5462 slots) masterM: 72bbf9cf89ae3eb64230b0b60d720c46400983fb 127.0.0.1:6381   slots:10923-16383 (5461 slots) masterS: 1d8a5458a13b4a13b3c21f73981a463bc7dd8652 127.0.0.1:6382   replicates c274b5d0921e59a50838afd5d2975f1ead774aa0S: f28ecdd64376fd41cd78ec8d1ccf0b3ede2352c1 127.0.0.1:6383   replicates 515b30be975005a102837fd75298ad4ec87cd2e7S: df431bd756cf57b4711ae3dd64d569e7958e4acc 127.0.0.1:6384   replicates 72bbf9cf89ae3eb64230b0b60d720c46400983fbCan 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 clusterWaiting for the cluster to join....>>> Performing Cluster Check (using node 127.0.0.1:6379)M: c274b5d0921e59a50838afd5d2975f1ead774aa0 127.0.0.1:6379   slots:0-5460 (5461 slots) master   1 additional replica(s)S: f28ecdd64376fd41cd78ec8d1ccf0b3ede2352c1 127.0.0.1:6383   slots: (0 slots) slave   replicates 515b30be975005a102837fd75298ad4ec87cd2e7S: df431bd756cf57b4711ae3dd64d569e7958e4acc 127.0.0.1:6384   slots: (0 slots) slave   replicates 72bbf9cf89ae3eb64230b0b60d720c46400983fbM: 72bbf9cf89ae3eb64230b0b60d720c46400983fb 127.0.0.1:6381   slots:10923-16383 (5461 slots) master   1 additional replica(s)M: 515b30be975005a102837fd75298ad4ec87cd2e7 127.0.0.1:6380   slots:5461-10922 (5462 slots) master   1 additional replica(s)S: 1d8a5458a13b4a13b3c21f73981a463bc7dd8652 127.0.0.1:6382   slots: (0 slots) slave   replicates c274b5d0921e59a50838afd5d2975f1ead774aa0[OK] All nodes agree about slots configuration.>>> Check for open slots...>>> Check slots coverage...[OK] All 16384 slots covered.

这时候执行

redis-cli  cluster info

cluster_state:okcluster_slots_assigned:16384cluster_slots_ok:16384cluster_slots_pfail:0cluster_slots_fail:0cluster_known_nodes:6cluster_size:3cluster_current_epoch:6cluster_my_epoch:1cluster_stats_messages_sent:552cluster_stats_messages_received:552

redis-cli cluster nodes

f28ecdd64376fd41cd78ec8d1ccf0b3ede2352c1 127.0.0.1:6383 slave 515b30be975005a102837fd75298ad4ec87cd2e7 0 1497362977647 5 connecteddf431bd756cf57b4711ae3dd64d569e7958e4acc 127.0.0.1:6384 slave 72bbf9cf89ae3eb64230b0b60d720c46400983fb 0 1497362978648 6 connected72bbf9cf89ae3eb64230b0b60d720c46400983fb 127.0.0.1:6381 master - 0 1497362978147 3 connected 10923-16383515b30be975005a102837fd75298ad4ec87cd2e7 127.0.0.1:6380 master - 0 1497362978147 2 connected 5461-109221d8a5458a13b4a13b3c21f73981a463bc7dd8652 127.0.0.1:6382 slave c274b5d0921e59a50838afd5d2975f1ead774aa0 0 1497362977146 4 connectedc274b5d0921e59a50838afd5d2975f1ead774aa0 127.0.0.1:6379 myself,master - 0 0 1 connected 0-5460

竟然自动分配了主从和slot = =（我自己测试使用的是3.2.8，主从和slot都需要自己配置，不过也很简单）

完成

[root@src]# redis-cli -c set test001 hahahaOK[root@src]# redis-cli -c get test001"hahaha"

OK