Linux环境redis集群搭建「建议收藏」
大家好，又见面了，我是你们的朋友全栈君。
（要让集群正常工作至少需要3个主节点，在这里我们要创建6个redis节点，其中三个为主节点，三个为从节点，对应的redis节点的ip和端口对应关系如下）
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
1、安装redis
上传服务器，解压，编译
tar -zxvf redis-3.2.1.tar.gz
cd redis-3.2.1
make
编译后
cd src
复制
redis-server
redis-cli
两个文件
2、创建集群目录
建立集群对应文件夹redisCluster
在这个文件夹中建6个子文件夹分别为r7000、r7001、r7002、r7003、r7004、r7005
将第一步复制的文件粘贴在上述6个子文件夹中，并授权
chmod 775 redis-cli
chmod 775 redis-server
再每个子文件夹中创建文件redis.conf
文件内容
port 7000
cluster-enabled yes
cluster-config-file nodes.conf
cluster-node-timeout 5000
appendonly yes
daemonize yes
bind 192.168.*.* protected-mode no
#这两个配置不加上，其他机器无法访问
每个文件的端口号都不一样，分别是7000、7001、7002、7003、7004、7005
3、分别启动这六个redis实例
到对应文件夹中执行
./redis-server redis.conf
查询redis进程如下
[root@apec-001 redis]# ps -ef|grep redis
root 11092 1 0 14:35 ? 00:00:00 ./redis-server *:7000 [cluster]
root 11296 1 0 14:46 ? 00:00:00 ./redis-server *:7001 [cluster]
root 11403 1 0 14:53 ? 00:00:00 ./redis-server *:7002 [cluster]
root 11441 1 0 14:55 ? 00:00:00 ./redis-server *:7003 [cluster]
root 11486 1 0 14:57 ? 00:00:00 ./redis-server *:7004 [cluster]
root 11532 1 0 14:59 ? 00:00:00 ./redis-server *:7005 [cluster]
root 11545 11135 0 15:00 pts/2 00:00:00 grep –color=auto redis
4、创建redis集群
在安装路径的src文件夹下执行
./redis-trib.rb create –replicas 1 127.0.0.1:7000 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
[root@apec-001 src]# ./redis-trib.rb create –replicas 1 127.0.0.1:7000 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
/usr/bin/env: ruby: No such file or directory
报错：/usr/bin/env: ruby: No such file or directory
因为是执行的ruby的脚本，需要ruby的环境
安装ruby环境
[root@apec-001 src]# yum install ruby
再次执行创建集群命令
[root@apec-001 src]# ./redis-trib.rb create –replicas 1 127.0.0.1:7000 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
/usr/share/rubygems/rubygems/core_ext/kernel_require.rb:55:in `require’: cannot load such file — redis (LoadError)
from /usr/share/rubygems/rubygems/core_ext/kernel_require.rb:55:in `require’
from ./redis-trib.rb:25:in `<main>’
报错cannot load such file — redis (LoadError)…
缺少rubygems组件，使用yum安装
[root@apec-001 src]# yum install rubygems
再次执行创建集群命令
[root@apec-001 src]# ./redis-trib.rb create –replicas 1 127.0.0.1:7000 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
/usr/share/rubygems/rubygems/core_ext/kernel_require.rb:55:in `require’: cannot load such file — redis (LoadError)
from /usr/share/rubygems/rubygems/core_ext/kernel_require.rb:55:in `require’
from ./redis-trib.rb:25:in `<main>’
缺少redis和ruby的接口，使用gem 安装
gem install redis
再次执行创建集群命令后，根据提示输入yes后集群创建成功
[root@apec-001 src]# ./redis-trib.rb create –replicas 1 192.168.8.21:7000 192.168.8.21:7001 192.168.8.21:7002 192.168.8.21:7003 192.168.8.21:7004 192.168.8.21:7005
>>> Creating cluster
>>> Performing hash slots allocation on 6 nodes…
Using 3 masters:
192.168.8.21:7000
192.168.8.21:7001
192.168.8.21:7002
Adding replica 192.168.8.21:7003 to 192.168.8.21:7000
Adding replica 192.168.8.21:7004 to 192.168.8.21:7001
Adding replica 192.168.8.21:7005 to 192.168.8.21:7002
M: ef86d6276bb1a8bbab07a1bd4ff8dc3f54ea73a1 192.168.8.21:7000
slots:0-5460 (5461 slots) master
M: 087d6d2f129f00262444d5bfc012b51239ee1636 192.168.8.21:7001
slots:5461-10922 (5462 slots) master
M: 67bc3416a311770682abaffde395fbfa34d7b5b0 192.168.8.21:7002
slots:10923-16383 (5461 slots) master
S: 22dceae7e42ff41e098854c476ec0af27a2cbfbc 192.168.8.21:7003
replicates ef86d6276bb1a8bbab07a1bd4ff8dc3f54ea73a1
S: 3231ff554f46b0310db5ece8a589be96b3098bed 192.168.8.21:7004
replicates 087d6d2f129f00262444d5bfc012b51239ee1636
S: 167b9645c6f1f347363c4f397c84eca666bd0456 192.168.8.21:7005
replicates 67bc3416a311770682abaffde395fbfa34d7b5b0
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 192.168.8.21:7000)
M: ef86d6276bb1a8bbab07a1bd4ff8dc3f54ea73a1 192.168.8.21:7000
slots:0-5460 (5461 slots) master
M: 087d6d2f129f00262444d5bfc012b51239ee1636 192.168.8.21:7001
slots:5461-10922 (5462 slots) master
M: 67bc3416a311770682abaffde395fbfa34d7b5b0 192.168.8.21:7002
slots:10923-16383 (5461 slots) master
M: 22dceae7e42ff41e098854c476ec0af27a2cbfbc 192.168.8.21:7003
slots: (0 slots) master
replicates ef86d6276bb1a8bbab07a1bd4ff8dc3f54ea73a1
M: 3231ff554f46b0310db5ece8a589be96b3098bed 192.168.8.21:7004
slots: (0 slots) master
replicates 087d6d2f129f00262444d5bfc012b51239ee1636
M: 167b9645c6f1f347363c4f397c84eca666bd0456 192.168.8.21:7005
slots: (0 slots) master
replicates 67bc3416a311770682abaffde395fbfa34d7b5b0
[OK] All nodes agree about slots configuration.
>>> Check for open slots…
>>> Check slots coverage…
[OK] All 16384 slots covered.
5、测试
使用redis-cli命令进入集群环境
./redis-cli -c -p 7000
nodes.conf文件内容
5e21c3a40f5b875d1f46724febc91059ccf3f36c 127.0.0.1:7004 slave 00158021c8af59f49ce83605601d79ef69dfb515 0 1476083335844 5 connected
bebc7ad0769b63d5dad22f59cf7e11e8eff8142e 127.0.0.1:7003 slave 2102328b7c064ece181bf431ae983f936770aef6 0 1476083334841 4 connected
d264a13fb4968cd93c3b700050e38c16000ee0ed 127.0.0.1:7005 slave 086e344b0e6fdee5e0e896c040aadd2cef32f6d9 0 1476083333841 6 connected
086e344b0e6fdee5e0e896c040aadd2cef32f6d9 127.0.0.1:7002 master – 0 1476083335744 3 connected 10923-16383
2102328b7c064ece181bf431ae983f936770aef6 127.0.0.1:7000 myself,master – 0 0 1 connected 0-5460
00158021c8af59f49ce83605601d79ef69dfb515 127.0.0.1:7001 master – 0 1476083334341 2 connected 5461-10922
vars currentEpoch 6 lastVoteEpoch 0
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