CentOS6.6如何安装Redis3.0.3集群

这篇文章主要介绍CentOS6.6如何安装redis3.0.3集群，文中介绍的非常详细，具有一定的参考价值，感兴趣的小伙伴们一定要看完！

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一个Redis集群，至少需要6个节点，3个为主，3个为从。

IP	端口	节点
127.0.0.1	7000	Master
127.0.0.1	7001	Master
127.0.0.1	7002	Master
127.0.0.1	7003	Slave
127.0.0.1	7004	Slave
127.0.0.1	7005	Slave

安装步骤：

一、下载redis3.0.3

# cd /usr/local

# wget http://download.redis.io/releases/redis-3.0.3.tar.gz

二、解压并编译

# tar -zxvf redis-3.0.3.tar.gz

# cd redis-3.0.3

# make

# make test

# make install

执行make install后，在/usr/local/bin目录下可看到生成了一些文件：

# ls /usr/local/bin/

redis-benchmark redis-check-dump redis-sentinel

redis-check-aof redis-cli redis-server

三、创建集群需要的目录并拷贝redis

# mkdir -p /usr/local/cluster

# mkdir -p /usr/local/cluster/7000

# mkdir -p /usr/local/cluster/7001

# mkdir -p /usr/local/cluster/7002

# mkdir -p /usr/local/cluster/7003

# mkdir -p /usr/local/cluster/7004

# mkdir -p /usr/local/cluster/7005

# cp -rf /usr/local/redis-3.0.3/* /usr/local/cluster/7000/

# cp -rf /usr/local/redis-3.0.3/* /usr/local/cluster/7001/

# cp -rf /usr/local/redis-3.0.3/* /usr/local/cluster/7002/

# cp -rf /usr/local/redis-3.0.3/* /usr/local/cluster/7003/

# cp -rf /usr/local/redis-3.0.3/* /usr/local/cluster/7004/

# cp -rf /usr/local/redis-3.0.3/* /usr/local/cluster/7005/

四、修改配置文件redis.conf

# vi /usr/local/cluster/7000/redis.conf

修改配置文件中的下面选项

daemonize yes

port 7000

appendonly yes

cluster-enabled yes

cluster-config-file nodes.conf

cluster-node-timeout 5000

用7000/redis.conf覆盖7001,7002,7003,7004,7005目录下的redis.conf

# cp /usr/local/cluster/7001/redis.conf /usr/local/cluster/7001

# cp /usr/local/cluster/7001/redis.conf /usr/local/cluster/7002

# cp /usr/local/cluster/7001/redis.conf /usr/local/cluster/7003

# cp /usr/local/cluster/7001/redis.conf /usr/local/cluster/7004

# cp /usr/local/cluster/7001/redis.conf /usr/local/cluster/7005

再修改7001,7002,7003,7004,7005目录下的redis.conf中的port，使得redis.conf中的port与其父目录名称一致，比如7001/redis.conf中的port为7001，7002/redis.conf中的port为7002

五、启动6个redis

# cd /usr/local/cluster/7000/src

# redis-server ../redis.conf

# cd /usr/local/cluster/7001/src

# redis-server ../redis.conf

# cd /usr/local/cluster/7002/src

# redis-server ../redis.conf

# cd /usr/local/cluster/7003/src

# redis-server ../redis.conf

# cd /usr/local/cluster/7004/src

# redis-server ../redis.conf

# cd /usr/local/cluster/7005/src

# redis-server ../redis.conf

启动之后使用命令查看redis的启动情况

# ps -ef | grep redis

root 9656 1 0 20:35 ? 00:00:00 redis-server *:7000 [cluster]

root 9684 1 0 20:37 ? 00:00:00 redis-server *:7001 [cluster]

root 9725 1 0 20:43 ? 00:00:00 redis-server *:7002 [cluster]

root 9730 1 0 20:43 ? 00:00:00 redis-server *:7003 [cluster]

root 9734 1 0 20:43 ? 00:00:00 redis-server *:7004 [cluster]

root 9739 1 0 20:43 ? 00:00:00 redis-server *:7005 [cluster]

root 9743 3288 0 20:43 pts/0 00:00:00 grep redis

六、创建redis集群

1 执行创建redis集群的命令会报错，提示找不到ruby

# cd /usr/local/redis-3.0.3/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: 没有那个文件或目录

解决此错误需要安装ruby，这里推荐使用yum install ruby

# yum install ruby

2 再执行创建集群的命令，还会报错，提示缺少rubygems组件

# ./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

./redis-trib.rb:24:in `require': no such file to load -- rubygems (LoadError)

from ./redis-trib.rb:24

解决此错误需要安装rubygems

# yum install rubygems

3 再次执行创建集群的命令，还会报错，提示不能加载redis，是因为缺少redis的接口

# ./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/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

解决此错误需要安装redis

# gem install redis

Successfully installed redis-3.3.3

1 gem installed

Installing ri documentation for redis-3.3.3...

Installing RDoc documentation for redis-3.3.3...

注意，有时候碰到无法安装的情况，需要手工下载并安装：

# wget https://rubygems.global.ssl.fastly.net/gems/redis-3.3.3.gem

# gem install -l ./redis-3.3.3.gem

4 再次执行安装集群的命令，正常执行

# ./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

>>> 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

Adding replica 127.0.0.1:7003 to 127.0.0.1:7000

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

M: 747467b5f2e2a472afad96de6c88dc2f3bf5b426 127.0.0.1:7000

slots:0-5460 (5461 slots) master

M: 4e4d8ba07d743c4e69fcd5df8867b996084ca4d9 127.0.0.1:7001

slots:5461-10922 (5462 slots) master

M: a6fe3c0a16bcb465a23147de8a3e242deb87e800 127.0.0.1:7002

slots:10923-16383 (5461 slots) master

S: 827ca514f4289dc4ac4d51308721f90851ae6180 127.0.0.1:7003

replicates 747467b5f2e2a472afad96de6c88dc2f3bf5b426

S: be77a6f99e905109150ceaaa50d357ed86803a4c 127.0.0.1:7004

replicates 4e4d8ba07d743c4e69fcd5df8867b996084ca4d9

S: 1285a04f3628c3e76f14d1036c59aef1cb36258d 127.0.0.1:7005

replicates a6fe3c0a16bcb465a23147de8a3e242deb87e800

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 127.0.0.1:7000)

M: 747467b5f2e2a472afad96de6c88dc2f3bf5b426 127.0.0.1:7000

slots:0-5460 (5461 slots) master

M: 4e4d8ba07d743c4e69fcd5df8867b996084ca4d9 127.0.0.1:7001

slots:5461-10922 (5462 slots) master

M: a6fe3c0a16bcb465a23147de8a3e242deb87e800 127.0.0.1:7002

slots:10923-16383 (5461 slots) master

M: 827ca514f4289dc4ac4d51308721f90851ae6180 127.0.0.1:7003

slots: (0 slots) master

replicates 747467b5f2e2a472afad96de6c88dc2f3bf5b426

M: be77a6f99e905109150ceaaa50d357ed86803a4c 127.0.0.1:7004

slots: (0 slots) master

replicates 4e4d8ba07d743c4e69fcd5df8867b996084ca4d9

M: 1285a04f3628c3e76f14d1036c59aef1cb36258d 127.0.0.1:7005

slots: (0 slots) master

replicates a6fe3c0a16bcb465a23147de8a3e242deb87e800

[OK] All nodes agree about slots configuration.

>>> Check for open slots...

>>> Check slots coverage...

[OK] All 16384 slots covered.

至此redis集群即搭建成功！

七、执行redis-cli命令进入集群环境

# redis-cli -c -p 7000

127.0.0.1:7000> quit;

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