Question

redis-2.8.21怎么部署

Answer 1

Redis集群部署文档(centos6系统)
（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）
<a class="baidu-highlight" href="https://www.baidu.com/s?wd=127.0.0.1&tn=44039180_cpr&fenlei=mv6quAkxTZn0IZRqIHckPjm4nH00T1YvuhfsmHu9nW6kmHczPj0s0ZwV5Hcvrjm3rH6sPfKWUMw85HfYnjn4nH6sgvPsT6KdThsqpZwYTjCEQLGCpyw9Uz4Bmy-bIi4WUvYETgN-TLwGUv3EPWf3rHnLrjRYPWc3rHb1nHcd" target="_blank">127.0.0.1</a>:7000
<a class="baidu-highlight" href="https://www.baidu.com/s?wd=127.0.0.1&tn=44039180_cpr&fenlei=mv6quAkxTZn0IZRqIHckPjm4nH00T1YvuhfsmHu9nW6kmHczPj0s0ZwV5Hcvrjm3rH6sPfKWUMw85HfYnjn4nH6sgvPsT6KdThsqpZwYTjCEQLGCpyw9Uz4Bmy-bIi4WUvYETgN-TLwGUv3EPWf3rHnLrjRYPWc3rHb1nHcd" target="_blank">127.0.0.1</a>:7001
<a class="baidu-highlight" href="https://www.baidu.com/s?wd=127.0.0.1&tn=44039180_cpr&fenlei=mv6quAkxTZn0IZRqIHckPjm4nH00T1YvuhfsmHu9nW6kmHczPj0s0ZwV5Hcvrjm3rH6sPfKWUMw85HfYnjn4nH6sgvPsT6KdThsqpZwYTjCEQLGCpyw9Uz4Bmy-bIi4WUvYETgN-TLwGUv3EPWf3rHnLrjRYPWc3rHb1nHcd" target="_blank">127.0.0.1</a>:7002
127.0.0.1:7003
127.0.0.1:7004
127.0.0.1:7005

1：下载redis。官网下载3.0.0版本，之前2.几的版本不支持集群模式
下载地址：<a href="https:// github.com/antirez/redis/archive/3.0.0-rc2.tar.gz" target="_blank">https:// github.com/antirez/redis/archive/3.0.0-rc2.tar.gz</a>
2：上传服务器，解压，编译
tar -zxvf redis-3.0.0-rc2.tar.gz mv redis-3.0.0-rc2.tar.gz redis3.0cd /usr/local/redis3.0makemake install
3：创建集群需要的目录
mkdir -p /usr.local/clustercd /usr.local/clustermkdir 7000mkdir 7001mkdir 7002mkdir 7003mkdir 7004mkdir 7005
4：修改配置文件redis.conf
cp /usr/local/redis3.0/redis.conf /usr.local/clustervi redis.conf##修改配置文件中的下面选项port 7000daemonize yescluster-enabled yescluster-config-file nodes.confcluster-node-timeout 5000appendonly yes##修改完redis.conf配置文件中的这些配置项之后把这个配置文件分别拷贝到7000/7001/7002/7003/7004/7005目录下面cp /usr/local/cluster/redis.conf /usr/local/cluster/7000cp /usr/local/cluster/redis.conf /usr/local/cluster/7001cp /usr/local/cluster/redis.conf /usr/local/cluster/7002cp /usr/local/cluster/redis.conf /usr/local/cluster/7003cp /usr/local/cluster/redis.conf /usr/local/cluster/7004cp /usr/local/cluster/redis.conf /usr/local/cluster/7005 ##注意：拷贝完成之后要修改7001/7002/7003/7004/7005目录下面redis.conf文件中的port参数，分别改为对应的文件夹的名称
5：分别启动这6个redis实例
cd /usr/local/cluster/7000redis-server redis.confcd /usr/local/cluster/7001redis-server redis.confcd /usr/local/cluster/7002redis-server redis.confcd /usr/local/cluster/7003redis-server redis.confcd /usr/local/cluster/7004redis-server redis.confcd /usr/local/cluster/7005redis-server redis.conf ##启动之后使用命令查看redis的启动情况ps -ef|grep redis如下图显示则说明启动成功
6：执行redis的创建集群命令创建集群
cd /usr/local/redis3.0/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
6.1执行上面的命令的时候会报错，因为是执行的ruby的脚本，需要ruby的环境
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安装
yum install ruby

6.2然后再执行第6步的创建集群命令，还会报错，提示缺少rubygems组件，使用yum安装

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6步的命令，还会报错，提示不能加载redis，是因为缺少redis和ruby的接口，使用gem 安装
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

6.4 再次执行第6步的命令，正常执行

输入yes，然后配置完成。

至此redis集群即搭建成功！
7：使用redis-cli命令进入集群环境
redis-cli -c -p 7000