Redis集群~windows下搭建Sentinel环境及它对主从模式的实际意义

2023-07-30,,

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关于redis-sentinel出现的原因

Redis集群主从模式有个最大的弊端,就是当主master挂了之前,它的slave从服务器无法提升为主,而在redis-sentinel出现之后,有效的解决了这个问题,它相当于是一个投票者或者哨兵,它时刻监视着redis集群的各个服务器,当主master挂了之后,它将进行投票进行新master的选举,一般地,我们会建立多个redis-sentinel服务器,它们都会进行主master的选举工作,当多个redis-sentinal都选择同一个主之后,这个主才有效!

关于之前的主从模式

对于内部的主从模式(master-slaves)主要实现了数据的读写分离,可以有效的提升服务器的吞吐量,但对于高可用上,表现不佳,因为当主挂了之后,从slave无法成为主,或者没有这种机制,相关主从环境搭建请像我的这篇文章

《Redis学习笔记~conf自主集群模式》

关于sentinel环境的搭建

1 下载redis3.2版

2 建立几个副本文件夹

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3 对redis-window.conf的信息进行修改,主要有以下3点

sentinel monitor mymaster 127.0.0.1 6379 2 //当前的主master,2个sentinel选举成功后,才有效
sentinel down-after-milliseconds mymaster 60000 //判断主master挂机的时间(毫秒)
sentinel failover-timeout mymaster 180000 //失败的超时时间
sentinel parallel-syncs mymaster 1 //选项指定了在执行故障转移时, 最多可以有多少个从服务器同时对新的主服务器进行同步, 这个数字越小, 完成故障转移所需的时间就越长

4 以sentinel模块支持redis-server

对于windows版本的redis,没有像linux环境里redis-sentinel进程,而可以使用redis-server来启动sentinal,我们只要添加这个参数即可,代码如下

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" alt="" />

5 查看redis-sentinel下的主从服务器

SENTINEL masters :列出所有被监视的主服务器,以及这些主服务器的当前状态。
SENTINEL slaves :列出给定主服务器的所有从服务器,以及这些从服务器的当前状态。
SENTINEL get-master-addr-by-name : 返回给定名字的主服务器的 IP 地址和端口号。 如果这个主服务器正在执行故障转移操作, 或者针对这个主服务器的故障转移操作已经完成, 那么这个命令返回新的主服务器的 IP 地址和端口号。
SENTINEL reset : 重置所有名字和给定模式 pattern 相匹配的主服务器。
SENTINEL failover : 当主服务器失效时, 在不询问其他 Sentinel 意见的情况下, 强制开始一次自动故障迁移 (不过发起故障转移的 Sentinel 会向其他 Sentinel 发送一个新的配置,其他 Sentinel 会根据这个配置进行相应的更新)。

连接指定的redis-sentinel服务器

aaarticlea/png;base64,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" alt="" />

显示当前的主master服务器

aaarticlea/png;base64,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" alt="" />

Redis-sentinel的实际意义

对于我们使用方来说,有了redis-sentinel就等于有了当前的redis-master,即我们的数据就知道向哪台服务器写入了(其它slave都是从master同步的数据),这对于使用客户端的开发人员来说,直接链接redis-sentinel的返回值即可,当然前提是你不要求横向扩展,不要求分片存储,当然,这对一个大型数据存储来说,是可笑的,我们当然需要扩展,对大数据当然要进行自动分片,所有我们需要为redis-sentinal再加一层统一的代理服务器,如Twemproxy,有了TW代理,我们在连接redis时,直接连接TW的地址即可,这会自动分片,并且自动向redis-sentinel并连接真实的redis-master服务器!

对于我们的Sentinel来说,我们只能对它进行一些简单的操作,如订阅服务,同时,它为我们开放了很多事件,供我们在外面调用

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alt="" />

Sentinel模式下的几个事件

+reset-master :主服务器已被重置。
+slave :一个新的从服务器已经被 Sentinel 识别并关联。
+failover-state-reconf-slaves :故障转移状态切换到了 reconf-slaves 状态。
+failover-detected :另一个 Sentinel 开始了一次故障转移操作,或者一个从服务器转换成了主服务器。
+slave-reconf-sent :领头(leader)的 Sentinel 向实例发送了 [SLAVEOF](/commands/slaveof.html) 命令,为实例设置新的主服务器。
+slave-reconf-inprog :实例正在将自己设置为指定主服务器的从服务器,但相应的同步过程仍未完成。
+slave-reconf-done :从服务器已经成功完成对新主服务器的同步。
-dup-sentinel :对给定主服务器进行监视的一个或多个 Sentinel 已经因为重复出现而被移除 —— 当 Sentinel 实例重启的时候,就会出现这种情况。
+sentinel :一个监视给定主服务器的新 Sentinel 已经被识别并添加。
+sdown :给定的实例现在处于主观下线状态。
-sdown :给定的实例已经不再处于主观下线状态。
+odown :给定的实例现在处于客观下线状态。
-odown :给定的实例已经不再处于客观下线状态。
+new-epoch :当前的纪元(epoch)已经被更新。
+try-failover :一个新的故障迁移操作正在执行中,等待被大多数 Sentinel 选中(waiting to be elected by the majority)。
+elected-leader :赢得指定纪元的选举,可以进行故障迁移操作了。
+failover-state-select-slave :故障转移操作现在处于 select-slave 状态 —— Sentinel 正在寻找可以升级为主服务器的从服务器。
no-good-slave :Sentinel 操作未能找到适合进行升级的从服务器。Sentinel 会在一段时间之后再次尝试寻找合适的从服务器来进行升级,又或者直接放弃执行故障转移操作。
selected-slave :Sentinel 顺利找到适合进行升级的从服务器。
failover-state-send-slaveof-noone :Sentinel 正在将指定的从服务器升级为主服务器,等待升级功能完成。
failover-end-for-timeout :故障转移因为超时而中止,不过最终所有从服务器都会开始复制新的主服务器(slaves will eventually be configured to replicate with the new master anyway)。
failover-end :故障转移操作顺利完成。所有从服务器都开始复制新的主服务器了。
+switch-master :配置变更,主服务器的 IP 和地址已经改变。 这是绝大多数外部用户都关心的信息。
+tilt :进入 tilt 模式。
-tilt :退出 tilt 模式。

回到目录

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