redis搭建集群ERROR: Could not find a valid gem 'redis-3.0.0' (>= 0) in any repository

步骤：

1,下载redis。官网下载3.0.0版本，之前几的版本不支持集群模式

下载地址：http://download.redis.io/releases/redis-3.0.0.tar.gz

2：上传服务器，解压，编译

3：创建集群需要的目录并拷贝redis

4：修改配置文件redis.conf

5：启动6个redis

6,创建redis集群

cd /usr/local/redis3.0/src

./redis-trib.rb create --replicas 1 192.168.25.129:7001 192.168.25.129:7002 192.168.25.129:7003 192.168.25.129:7004 192.168.25.129:7005 192.168.25.129:7006

6.1执行上面的命令的时候会报错，因为是执行的的脚本，需要

错误内容：/usr/bin/env: ruby: No such file or directory

所以需要安装ruby的环境，这里推荐使用yum install ruby

yum install ruby

6.2然后再执行第步的创建集群命令，还会报错，提示缺少rubygems组件

错误内容：

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

from ./redis-trib.rb:24

yum install rubygems

6.3再次执行第步的命令，还会报错，提示不能加载redis，是因为缺少redis的接口

错误内容：

/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

gem install redis

这里可能无法安装,因为无法连接gem服务器：

[@zw_22_90 src]# gem install redis --version 3.0.0  
ERROR:  Could not find a valid gem 'redis-3.0.0' (>= 0) in any repository

ERROR:  While executing gem ... (Gem::RemoteFetcher::FetchError)

安装redis过程中遇到题目中的问题解决如下：

需要手工下载并安装：

wget https://rubygems.global.ssl.fastly.net/gems/redis-3.2.1.gem
gem install -l ./redis-3.2.1.gem

6.4 再次执行第步的命令，正常执行

输入yes，然后配置完成。

[@zw_22_90 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

>>> 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: 2022f24d581b4a7c3342e3245c32927cbd5ec16d 127.0.0.1:7000

   slots:0-5460 (5461 slots) master

M: 37b7008f80f8c21a698da8cb1f1b32db8c0c415c 127.0.0.1:7001

   slots:5461-10922 (5462 slots) master

M: ac6dc5fa96e856b34c1ba4c3814394e4ebb698dd 127.0.0.1:7002

   slots:10923-16383 (5461 slots) master

S: b5b76d70bbb0dbf3e7df8a38f1259e95e2054721 127.0.0.1:7003

   replicates 2022f24d581b4a7c3342e3245c32927cbd5ec16d

S: 6881f8fef9c25da486f320ebf2ead39c1502db4c 127.0.0.1:7004

   replicates 37b7008f80f8c21a698da8cb1f1b32db8c0c415c

S: f090526d32cced97731eef2a2e1722a7bac7d9ea 127.0.0.1:7005

   replicates ac6dc5fa96e856b34c1ba4c3814394e4ebb698dd

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: 2022f24d581b4a7c3342e3245c32927cbd5ec16d 127.0.0.1:7000

   slots:0-5460 (5461 slots) master

M: 37b7008f80f8c21a698da8cb1f1b32db8c0c415c 127.0.0.1:7001

   slots:5461-10922 (5462 slots) master

M: ac6dc5fa96e856b34c1ba4c3814394e4ebb698dd 127.0.0.1:7002

   slots:10923-16383 (5461 slots) master

M: b5b76d70bbb0dbf3e7df8a38f1259e95e2054721 127.0.0.1:7003

   slots: (0 slots) master

   replicates 2022f24d581b4a7c3342e3245c32927cbd5ec16d

M: 6881f8fef9c25da486f320ebf2ead39c1502db4c 127.0.0.1:7004

   slots: (0 slots) master

   replicates 37b7008f80f8c21a698da8cb1f1b32db8c0c415c

M: f090526d32cced97731eef2a2e1722a7bac7d9ea 127.0.0.1:7005

   slots: (0 slots) master

   replicates ac6dc5fa96e856b34c1ba4c3814394e4ebb698dd

[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！

7，redis-cli命令进入集群环境

[@zw_22_90 src]# redis-cli -c -p 7000

127.0.0.1:7000> quit;

需要注意的是，这个集群是在虚拟机上搭建的，如果在6台真实服务器上搭建集群，需要将这些服务器的防火墙关闭。

文章详细内容转载地址见：centos 安装 redis3.0.0 集群