概述
一两拨千斤，项目环境中某个环节为了安全性的需要，因为项目环境也是一个生态链嘛，所以就进行了所有的升级，其中涉及到Redis版本升级。
在上一篇文章中【CentOs7搭建基于Redis-4.0.2的集群环境之图文详解】已经对Redis进行了一些基本的详细的介绍，但是是基于Redis4.x的版本进行的，今年，Redis又进行了一次革命性版本变革，升级到了Redis-5.x版本，在本文章一些基本的概念就不再重复的阐述，本文主要结合官方文档以更加主观的方式来介绍Redis-5.x的一些更本性的变化，以及如何正确快捷的基于最新的Redis-5.x搭建一个Redis集群环境。
官网文档：https://redis.io/documentation
关于 Redis 集群数据分片：
在官文中得出结论，当前Redis-5.x新版本构建集群使用Redis的客户端工具“ redis-cli ” 进行的，而Redis-4.x及Redis-3.x使用的 “ redis-trib ” 连接器进行构建的，语法如下：
redis-cli --cluster SUBCOMMAND [ARGUMENTS] [OPTIONS]
如果想构建一个基于Redis-5.x的集群环境，请继续往下看》》》
Linux-7.7下基于最新版Redis-5.0.5集群环境搭建与配置
如果还是使用以前的方式的话，就不行了：
具体信息如下：
[root@localhost redis_cluster]# ./redis-trib.rb create --replicas 1 192.168.159.129:9001 192.168.159.129:9002 192.168.159.129:9003 192.168.159.129:9004 192.168.159.129:9005 192.168.159.129:9006
WARNING: redis-trib.rb is not longer available!
You should use redis-cli instead.
All commands and features belonging to redis-trib.rb have been moved
to redis-cli.
In order to use them you should call redis-cli with the --cluster
option followed by the subcommand name, arguments and options.
Use the following syntax:
redis-cli --cluster SUBCOMMAND [ARGUMENTS] [OPTIONS]
Example:
redis-cli --cluster create 192.168.159.129:9001 192.168.159.129:9002 192.168.159.129:9003 192.168.159.129:9004 192.168.159.129:9005 192.168.159.129:9006 --cluster-replicas 1
To get help about all subcommands, type:
redis-cli --cluster help
所以必须使用Redis的脚本工具 “ redis-cli ” 进行创建
输入命令 “ ./redis-cli --cluster create 192.168.159.129:9001 192.168.159.129:9002 192.168.159.129:9003 192.168.159.129:9004 192.168.159.129:9005 192.168.159.129:9006 --cluster-replicas 1 ”
如果还不知道怎么准备的，请参看【CentOs7搭建基于Redis-4.0.2的集群环境之图文详解】
创建内容如下：
[root@localhost redis_001]# ./redis-cli --cluster create 192.168.159.129:9001 192.168.159.129:9002 192.168.159.129:9003 192.168.159.129:9004 192.168.159.129:9005 192.168.159.129:9006 --cluster-replicas 1
>>> Performing hash slots allocation on 6 nodes...
Master[0] -> Slots 0 - 5460
Master[1] -> Slots 5461 - 10922
Master[2] -> Slots 10923 - 16383
Adding replica 192.168.159.129:9005 to 192.168.159.129:9001
Adding replica 192.168.159.129:9006 to 192.168.159.129:9002
Adding replica 192.168.159.129:9004 to 192.168.159.129:9003
>>> Trying to optimize slaves allocation for anti-affinity
[WARNING] Some slaves are in the same host as their master
M: 6298907d9f4facfdc6b68e985013d80a5344a2da 192.168.159.129:9001
slots:[0-5460] (5461 slots) master
M: 6d484bad6d77a8f7bf350a475471f11f79f0338a 192.168.159.129:9002
slots:[5461-10922] (5462 slots) master
M: 88dff0c3f9705cb03797c1ebf933e1a184b5bb5d 192.168.159.129:9003
slots:[10923-16383] (5461 slots) master
S: 0e5dbfa0b083c0246a28781cb8c891fe882014c3 192.168.159.129:9004
replicates 6298907d9f4facfdc6b68e985013d80a5344a2da
S: b2e4faa325739badb7b272c15ead7b4321aa05d3 192.168.159.129:9005
replicates 6d484bad6d77a8f7bf350a475471f11f79f0338a
S: d2c554a34412e6767f1d512c8db03fdd81067f4e 192.168.159.129:9006
replicates 88dff0c3f9705cb03797c1ebf933e1a184b5bb5d
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 192.168.159.129:9001)
M: 6298907d9f4facfdc6b68e985013d80a5344a2da 192.168.159.129:9001
slots:[0-5460] (5461 slots) master
1 additional replica(s)
S: b2e4faa325739badb7b272c15ead7b4321aa05d3 192.168.159.129:9005
slots: (0 slots) slave
replicates 6d484bad6d77a8f7bf350a475471f11f79f0338a
M: 6d484bad6d77a8f7bf350a475471f11f79f0338a 192.168.159.129:9002
slots:[5461-10922] (5462 slots) master
1 additional replica(s)
S: 0e5dbfa0b083c0246a28781cb8c891fe882014c3 192.168.159.129:9004
slots: (0 slots) slave
replicates 6298907d9f4facfdc6b68e985013d80a5344a2da
S: d2c554a34412e6767f1d512c8db03fdd81067f4e 192.168.159.129:9006
slots: (0 slots) slave
replicates 88dff0c3f9705cb03797c1ebf933e1a184b5bb5d
M: 88dff0c3f9705cb03797c1ebf933e1a184b5bb5d 192.168.159.129:9003
slots:[10923-16383] (5461 slots) master
1 additional replica(s)
[OK] All nodes agree about slots configuration.
>>> Check for open slots...
>>> Check slots coverage...
[OK] All 16384 slots covered.
hash-slots的分配如下：
【图1】
【图2】
好了，关于 Linux-7.7下基于最新版Redis-5.0.5集群环境搭建与配置详细教程 就写到这儿了，如果还有什么疑问或遇到什么问题欢迎扫码提问，也可以给我留言哦，我会一一详细的解答的。
歇后语：“ 共同学习，共同进步 ”，也希望大家多多关注CSND的IT社区。
| 作 者： | 华 仔 |
| 联系作者： | [email protected] |
| 来 源： | CSDN (Chinese Software Developer Network) |
| 原 文： | https://blog.csdn.net/Hello_World_QWP/article/details/102820018 |
| 版权声明： | 本文为博主原创文章，请在转载时务必注明博文出处！ |