Redis配置sentinel模式
Redis配置sentinel模式
作者：尹正杰
版权声明：原创作品，谢绝转载！否则将追究法律责任。
哨兵（sentinel）主要是完成三个功能：监控，通知，自动故障转移功能。sentinel是安装Redis服务时默认安装的，因此我们可以直接使用！
一.配置项说明
1>.port
服务的监听端口，比如：port 26479。
2>.sentinel monitor <master-name> <ip><redis-port><quorm>
<quorum>表示sentinel集群的quorum机制，即至少有quorum个sentinel节点同时判断主节点故障时，才任务其真的故障。
s_down：subjectively down
o_down：objectively down
3>.semtinel auth-pass <master-name><password>
4>.sentinel down-afer-milliseconds <master-name><millseconds>
监听到指定的集群的主节点异常状态持久多久方才将标记为“故障”。
5>.sentinel parallel-syncs <master-name> <numslaves>
指在failover过程中，能够被sentinel并行配置的从节点的数量。
6>.sentinel failover-timeout <master-name> <milliseconds>
sentinel必须在此指定的时间长内完成故障转移操作，否则，将视为故障转移操作失败。
7>.sentinel notification-script <master-name> <script-path>
通知脚本，此脚本被自动传递多个参数。
8>.redis-cli -h SENTINEL_HOST -p SENTINEL_PORT
二.实操案例
1>.编写sentinel的配置文件（我们复用redis集群的虚拟机）
[root@node101.yinzhengjie.org.cn ~]# egrep -v "^$|^#" /etc/redis-sentinel.conf
bind node101.yinzhengjie.org.cn
port
dir /tmp
sentinel monitor yinzhengjie-redis node101.yinzhengjie.org.cn
sentinel auth-pass yinzhengjie-redis yinzhengjie
sentinel down-after-milliseconds yinzhengjie-redis
sentinel parallel-syncs yinzhengjie-redis
sentinel failover-timeout yinzhengjie-redis
logfile /var/log/redis/sentinel.log
[root@node101.yinzhengjie.org.cn ~]#
[root@node101.yinzhengjie.org.cn ~]# egrep -v "^$|^#" /etc/redis-sentinel.conf
[root@node102.yinzhengjie.org.cn ~]# egrep -v "^$|^#" /etc/redis-sentinel.conf
bind node102.yinzhengjie.org.cn
port
dir /tmp
sentinel monitor yinzhengjie-redis node101.yinzhengjie.org.cn
sentinel auth-pass yinzhengjie-redis yinzhengjie
sentinel down-after-milliseconds yinzhengjie-redis
sentinel parallel-syncs yinzhengjie-redis
sentinel failover-timeout yinzhengjie-redis
logfile /var/log/redis/sentinel.log
[root@node102.yinzhengjie.org.cn ~]#
[root@node102.yinzhengjie.org.cn ~]# egrep -v "^$|^#" /etc/redis-sentinel.conf
[root@node103.yinzhengjie.org.cn ~]# egrep -v "^$|^#" /etc/redis-sentinel.conf
bind node103.yinzhengjie.org.cn
port
dir /tmp
sentinel monitor yinzhengjie-redis node101.yinzhengjie.org.cn
sentinel auth-pass yinzhengjie-redis yinzhengjie
sentinel down-after-milliseconds yinzhengjie-redis
sentinel parallel-syncs yinzhengjie-redis
sentinel failover-timeout yinzhengjie-redis
logfile /var/log/redis/sentinel.log
[root@node103.yinzhengjie.org.cn ~]#
[root@node103.yinzhengjie.org.cn ~]# egrep -v "^$|^#" /etc/redis-sentinel.conf
2>.启动sentinel服务
[root@node101.yinzhengjie.org.cn ~]# systemctl start redis-sentinel
[root@node101.yinzhengjie.org.cn ~]#
[root@node101.yinzhengjie.org.cn ~]# systemctl status redis-sentinel
● redis-sentinel.service - Redis Sentinel
Loaded: loaded (/usr/lib/systemd/system/redis-sentinel.service; disabled; vendor preset: disabled)
Drop-In: /etc/systemd/system/redis-sentinel.service.d
└─limit.conf
Active: active (running) since Sat -- :: CST; 11s ago
Main PID: (redis-sentinel)
CGroup: /system.slice/redis-sentinel.service
└─ /usr/bin/redis-sentinel node101.yinzhengjie.org.cn: [sentinel] Apr :: node101.yinzhengjie.org.cn systemd[]: Starting Redis Sentinel...
Apr :: node101.yinzhengjie.org.cn systemd[]: Started Redis Sentinel.
[root@node101.yinzhengjie.org.cn ~]#
[root@node101.yinzhengjie.org.cn ~]# ss -ntl
State Recv-Q Send-Q Local Address:Port Peer Address:Port
LISTEN 172.30.1.101: *:*
LISTEN 172.30.1.101: *:*
LISTEN *: *:*
LISTEN ::: :::*
[root@node101.yinzhengjie.org.cn ~]#
[root@node101.yinzhengjie.org.cn ~]#
[root@node101.yinzhengjie.org.cn ~]#
[root@node101.yinzhengjie.org.cn ~]# tail /etc/redis-sentinel.conf
logfile "/var/log/redis/sentinel.log"
# Generated by CONFIG REWRITE
supervised systemd
sentinel config-epoch yinzhengjie-redis
sentinel leader-epoch yinzhengjie-redis
sentinel known-slave yinzhengjie-redis 172.30.1.102
sentinel known-slave yinzhengjie-redis 172.30.1.103
sentinel known-sentinel yinzhengjie-redis 172.30.1.102 9c195f20e954d9032f57900c1839857ee4c31be4
sentinel known-sentinel yinzhengjie-redis 172.30.1.103 fbafb3bdbd04c61cf9c4e8dcf0147c7a20f22243
sentinel current-epoch
[root@node101.yinzhengjie.org.cn ~]#
[root@node101.yinzhengjie.org.cn ~]# systemctl start redis-sentinel
[root@node102.yinzhengjie.org.cn ~]# systemctl start redis-sentinel
[root@node102.yinzhengjie.org.cn ~]#
[root@node102.yinzhengjie.org.cn ~]# systemctl status redis-sentinel
● redis-sentinel.service - Redis Sentinel
Loaded: loaded (/usr/lib/systemd/system/redis-sentinel.service; disabled; vendor preset: disabled)
Drop-In: /etc/systemd/system/redis-sentinel.service.d
└─limit.conf
Active: active (running) since Sat -- :: CST; 42s ago
Main PID: (redis-sentinel)
CGroup: /system.slice/redis-sentinel.service
└─ /usr/bin/redis-sentinel node102.yinzhengjie.org.cn: [sentinel] Apr :: node102.yinzhengjie.org.cn systemd[]: Starting Redis Sentinel...
Apr :: node102.yinzhengjie.org.cn systemd[]: Started Redis Sentinel.
[root@node102.yinzhengjie.org.cn ~]#
[root@node102.yinzhengjie.org.cn ~]# ss -ntl
State Recv-Q Send-Q Local Address:Port Peer Address:Port
LISTEN 172.30.1.102: *:*
LISTEN 172.30.1.102: *:*
LISTEN *: *:*
LISTEN ::: :::*
[root@node102.yinzhengjie.org.cn ~]#
[root@node102.yinzhengjie.org.cn ~]#
[root@node102.yinzhengjie.org.cn ~]# tail /etc/redis-sentinel.conf
logfile "/var/log/redis/sentinel.log"
# Generated by CONFIG REWRITE
supervised systemd
sentinel config-epoch yinzhengjie-redis
sentinel leader-epoch yinzhengjie-redis
sentinel known-slave yinzhengjie-redis 172.30.1.103
sentinel known-slave yinzhengjie-redis 172.30.1.102
sentinel known-sentinel yinzhengjie-redis 172.30.1.103 fbafb3bdbd04c61cf9c4e8dcf0147c7a20f22243
sentinel known-sentinel yinzhengjie-redis 172.30.1.101 5697f4a91fe1bf43f075e729bdde6ec504dc820e
sentinel current-epoch
[root@node102.yinzhengjie.org.cn ~]#
[root@node102.yinzhengjie.org.cn ~]#
[root@node102.yinzhengjie.org.cn ~]# systemctl start redis-sentinel
[root@node103.yinzhengjie.org.cn ~]# systemctl start redis-sentinel
[root@node103.yinzhengjie.org.cn ~]#
[root@node103.yinzhengjie.org.cn ~]# systemctl status redis-sentinel
● redis-sentinel.service - Redis Sentinel
Loaded: loaded (/usr/lib/systemd/system/redis-sentinel.service; disabled; vendor preset: disabled)
Drop-In: /etc/systemd/system/redis-sentinel.service.d
└─limit.conf
Active: active (running) since Sat -- :: PDT; 5s ago
Main PID: (redis-sentinel)
CGroup: /system.slice/redis-sentinel.service
└─ /usr/bin/redis-sentinel node103.yinzhengjie.org.cn: [sentinel] Apr :: node103.yinzhengjie.org.cn systemd[]: Starting Redis Sentinel...
Apr :: node103.yinzhengjie.org.cn systemd[]: Started Redis Sentinel.
[root@node103.yinzhengjie.org.cn ~]#
[root@node103.yinzhengjie.org.cn ~]# tail /etc/redis-sentinel.conf
logfile "/var/log/redis/sentinel.log"
# Generated by CONFIG REWRITE
supervised systemd
sentinel config-epoch yinzhengjie-redis
sentinel leader-epoch yinzhengjie-redis
sentinel known-slave yinzhengjie-redis 172.30.1.102
sentinel known-slave yinzhengjie-redis 172.30.1.103
sentinel known-sentinel yinzhengjie-redis 172.30.1.101 5697f4a91fe1bf43f075e729bdde6ec504dc820e
sentinel known-sentinel yinzhengjie-redis 172.30.1.102 9c195f20e954d9032f57900c1839857ee4c31be4
sentinel current-epoch
[root@node103.yinzhengjie.org.cn ~]#
[root@node103.yinzhengjie.org.cn ~]#
[root@node103.yinzhengjie.org.cn ~]# systemctl start redis-sentinel
3>.查看当前集群的状态
[root@node101.yinzhengjie.org.cn ~]# redis-cli -h node101.yinzhengjie.org.cn -p
node101.yinzhengjie.org.cn:>
node101.yinzhengjie.org.cn:> SENTINEL masters
) ) "name"
) "yinzhengjie-redis"
) "ip"
) "172.30.1.101"
) "port"
) ""
) "runid"
) "514f95dd0a54449ec221b662da02caa65f74353e"
) "flags"
) "master"
) "link-pending-commands"
) ""
) "link-refcount"
) ""
) "last-ping-sent"
) ""
) "last-ok-ping-reply"
) ""
) "last-ping-reply"
) ""
) "down-after-milliseconds"
) ""
) "info-refresh"
) ""
) "role-reported"
) "master"
) "role-reported-time"
) ""
) "config-epoch"
) ""
) "num-slaves"
) ""
) "num-other-sentinels"
) ""
) "quorum"
) ""
) "failover-timeout"
) ""
) "parallel-syncs"
) ""
node101.yinzhengjie.org.cn:>
node101.yinzhengjie.org.cn:>
node101.yinzhengjie.org.cn:26379> SENTINEL masters #查看主节点信息
node101.yinzhengjie.org.cn:> SENTINEL slaves yinzhengjie-redis
) ) "name"
) "172.30.1.102:6379"
) "ip"
) "172.30.1.102"
) "port"
) ""
) "runid"
) "2b4d70685d17183e80816314d160162770d01aec"
) "flags"
) "slave"
) "link-pending-commands"
) ""
) "link-refcount"
) ""
) "last-ping-sent"
) ""
) "last-ok-ping-reply"
) ""
) "last-ping-reply"
) ""
) "down-after-milliseconds"
) ""
) "info-refresh"
) ""
) "role-reported"
) "slave"
) "role-reported-time"
) ""
) "master-link-down-time"
) ""
) "master-link-status"
) "ok"
) "master-host"
) "172.30.1.101"
) "master-port"
) ""
) "slave-priority"
) ""
) "slave-repl-offset"
) ""
) ) "name"
) "172.30.1.103:6379"
) "ip"
) "172.30.1.103"
) "port"
) ""
) "runid"
) "4ed8d98123094a5922650a4d7047bba03851f6b7"
) "flags"
) "slave"
) "link-pending-commands"
) ""
) "link-refcount"
) ""
) "last-ping-sent"
) ""
) "last-ok-ping-reply"
) ""
) "last-ping-reply"
) ""
) "down-after-milliseconds"
) ""
) "info-refresh"
) ""
) "role-reported"
) "slave"
) "role-reported-time"
) ""
) "master-link-down-time"
) ""
) "master-link-status"
) "ok"
) "master-host"
) "172.30.1.101"
) "master-port"
) ""
) "slave-priority"
) ""
) "slave-repl-offset"
) ""
node101.yinzhengjie.org.cn:>
node101.yinzhengjie.org.cn:>
node101.yinzhengjie.org.cn:26379> SENTINEL slaves yinzhengjie-redis #查看从节点信息
我们可以使用SENTINEL实现自动容灾，也可以根据SENTINEL提供的信息手动修改master节点等操作。
Redis配置sentinel模式的更多相关文章
- Redis哨兵(sentinel)模式搭建
一.Sentinel介绍 之前骚了一波Redis的简介及应用场景,今天试了下他的哨兵模式: Sentinel是Redis的高可用性(HA)解决方案,由一个或多个Sentinel实例组成的Sentine ...
- SpringBoot连接Redis （Sentinel模式&Cluster模式）
一.引入pom <dependency> <groupId>org.springframework.boot</groupId> <artifactId> ...
- Redis（九）高可用专栏之Sentinel模式
本文讲述Redis高可用方案中的哨兵模式--Sentinel,RedisClient中的Jedis如何使用以及使用原理. Redis主从复制 Redis Sentinel模式 Jedis中的Senti ...
- Redis配置集群一（window）
因为接下来的项目要使用到redis作为我们项目的缓存,所以就花了一天时间研究了一下redis的一些用法,因为没转linux虚拟机,所以就决定先研究一下windows版本的redis集群.主要是redi ...
- SpringBoot进阶教程(三十)整合Redis之Sentinel哨兵模式
Redis-Sentinel是官方推荐的高可用解决方案,当redis在做master-slave的高可用方案时,假如master宕机了,redis本身(以及其很多客户端)都没有实现自动进行主备切换,而 ...
- Redis笔记-Sentinel哨兵模式
Redis以主从的模式搭建集群后,如果主节点Master挂掉,虽然可以实现将备用节点Slave切换成主节点,但是Redis本身并没有自动监控机制,需要借助Sentinel哨兵模式,实现监控并实现自动切 ...
- redis单点、redis主从、redis哨兵sentinel，redis集群cluster配置搭建与使用
目录 redis单点.redis主从.redis哨兵 sentinel,redis集群cluster配置搭建与使用 1 .redis 安装及配置 1.1 redis 单点 1.1.2 在命令窗口操作r ...
- 【Redis】Redis学习（四） Redis Sentinel模式详解
主从模式的弊端就是不具备高可用性,当master挂掉以后,Redis将不能再对外提供写入操作,因此sentinel应运而生. Redis Sentinel是Redis官方提供的集群管理工具,主要有三大 ...
- Redis全方位讲解--哨兵模式（Sentinel模式）
前言 当按照上一篇<redis主从复制>部署好之后,我们会想,一旦redis的master出现了宕机,并且我们并没有及时发现,这时候就可能会出现数据丢失或程序无法运行.此时,redis的哨 ...
随机推荐
- ZYNQ EMIO使用及可重用封装
为了快速实现算法板级验证,PC端需要通过JTAG或以太网与FPGA形成通路.最简单便捷的方案是利用协议栈芯片,用户可以无视底层,利用简单的SPI协议读写寄存器实现复杂的TCP UDP等网络协议.当然带 ...
- 创建你的第一个Composer/Packagist包
今天我们要介绍一下如何通过Composer和Packagist向PHP社区贡献代码包.首先,如果你是一个PHP开发者但是还不知道什么是Composer,请先参考了一下这篇文章http://docs.p ...
- Sublime3如何用快捷键实现字母的大小写转换
说明 有的时候需要将字母大小写一键转换一下,很显然,通过编辑器来实现会更加轻量级,而不是打开IDE去实现 我用的Sublime3版本如下: 步骤 1.打开Sublime的Key Bindings 2. ...
- [RHEL 6]GPT分区--parted
对于2T以上的硬盘,划分分区表需要GPT分区,RHEL 6中使用parted进行分区 用法:parted [选项]... [设备 [命令 [参数]...]...] 将带有“参数”的命令应用于“设备”. ...
- Scrapy案例02-腾讯招聘信息爬取
目录 1. 目标 2. 网站结构分析 3. 编写爬虫程序 3.1. 配置需要爬取的目标变量 3.2. 写爬虫文件scrapy 3.3. 编写yield需要的管道文件 3.4. setting中配置请求 ...
- 黏包现象之TCP
老师的博客:http://www.cnblogs.com/Eva-J/articles/8244551.html#_label5 server #_*_coding:gbk*_ from socket ...
- 容易被误读的IOSTAT
iostat(1)是在Linux系统上查看I/O性能最基本的工具,然而对于那些熟悉其它UNIX系统的人来说它是很容易被误读的.比如在HP-UX上 avserv(相当于Linux上的 svctm)是最重 ...
- 单元测试（qunit）
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <meta http ...
- 3-STM32物联网开发WIFI(ESP8266)+GPRS(Air202)系统方案安全篇(购买域名,域名绑定IP)
2-STM32物联网开发WIFI(ESP8266)+GPRS(Air202)系统方案安全篇(监听Wi-Fi和APP的数据) 因为安全连接是和域名绑在一块的,所以需要申请域名 有没有不知道域名是什么的, ...
- 一、TensorFlow初探
目录 计算模型 数据模型 运行模型 TensorFlow及神经网络 import tensorflow as tf a = tf.constant([1.0, 2.0], name='a', dtyp ...