当前位置：首页 > article >正文

企业级NoSql数据库 --- Redis集群

article 2024/11/13 9:07:40

什么是 redis ?

Redis是一个开源的、遵循BSD协议的、基于内存的而且目前比较流行的键值数据库(key-value database)，是一个非关系型数据库，redis 提供将内存通过网络远程共享的一种服务，提供类似功能的还有memcached，但相比memcached，redis还提供了易扩展、高性能、具备数据持久性等功能。

Redis 在高并发、低延迟环境要求比较高的环境使用量非常广泛。

环境准备：

母盘：RHEL9 ---> 1G，1内核

克隆：redis-node1（172.25.254.10）、redis-node2（172.25.254.20）、redis-node3（172.25.254.30）

vmset.sh eth0 172.25.254.10 redis-node1.test.org

vmset.sh eth0 172.25.254.20 redis-node1.test.org

vmset.sh eth0 172.25.254.30 redis-node1.test.org

redis安装

[root@redis-node1 ~]# tar zxf redis-7.4.0.tar.gz

[root@redis-node1 ~]# cd redis-7.4.0/

[root@redis-node1 redis-7.4.0]# dnf install make -y
[root@redis-node1 redis-7.4.0]# dnf install initscripts -y

[root@redis-node1 redis-7.4.0]# ll /etc/init.d/
[root@redis-node1 redis-7.4.0]# dnf install gcc -y
[root@redis-node1 redis-7.4.0]# make && make install


[root@redis-node1 redis-7.4.0]# cd utils/
[root@redis-node1 utils]# vim install_server.sh 
[root@redis-node1 utils]# ./install_server.sh 
#一路回车

[root@redis-node1 utils]# vim /etc/redis/6379.conf
[root@redis-node1 utils]# /etc/init.d/redis_6379 restart

[root@redis-node1 utils]# cd
[root@redis-node1 ~]# scp -r redis-7.4.0 root@172.25.254.20:/root
[root@redis-node1 ~]# scp -r redis-7.4.0 root@172.25.254.30:/root

[root@redis-node1 ~]# cd /usr/local/bin/

#10~30:都需要安装rsync
[root@redis-node1 bin]# dnf install rsync -y

[root@redis-node1 bin]# rsync -al * root@172.25.254.20:/usr/local/bin
[root@redis-node1 bin]# rsync -al * root@172.25.254.30:/usr/local/bin

[root@redis-node2 ~]# dnf install initscripts -y
[root@redis-node2 ~]# dnf install rsync -y


[root@redis-node2 ~]# cd redis-7.4.0/
[root@redis-node2 redis-7.4.0]# cd utils/
[root@redis-node2 utils]# ./install_server.sh 
Welcome to the redis service installer
This script will help you easily set up a running redis server

Please select the redis port for this instance: [6379] 
Selecting default: 6379
Please select the redis config file name [/etc/redis/6379.conf] 
Selected default - /etc/redis/6379.conf
Please select the redis log file name [/var/log/redis_6379.log] 
Selected default - /var/log/redis_6379.log
Please select the data directory for this instance [/var/lib/redis/6379] 
Selected default - /var/lib/redis/6379
Please select the redis executable path [/usr/local/bin/redis-server] 
Selected config:
Port           : 6379
Config file    : /etc/redis/6379.conf
Log file       : /var/log/redis_6379.log
Data dir       : /var/lib/redis/6379
Executable     : /usr/local/bin/redis-server
Cli Executable : /usr/local/bin/redis-cli
Is this ok? Then press ENTER to go on or Ctrl-C to abort.
Copied /tmp/6379.conf => /etc/init.d/redis_6379
Installing service...
Successfully added to chkconfig!
Successfully added to runlevels 345!
Starting Redis server...
Installation successful!
[root@redis-node2 utils]# 
[root@redis-node2 utils]# vim /etc/redis/6379.conf 
[root@redis-node2 utils]# /etc/init.d/redis_6379 restart
Stopping ...
Redis stopped
Starting Redis server...

[root@redis-node3 ~]# dnf install initscripts -y
[root@redis-node3 ~]# dnf install rsync -y


[root@redis-node3 ~]# cd redis-7.4.0/
[root@redis-node3 redis-7.4.0]# cd utils/
[root@redis-node3 utils]# ./install_server.sh 
Welcome to the redis service installer
This script will help you easily set up a running redis server

Please select the redis port for this instance: [6379] 
Selecting default: 6379
Please select the redis config file name [/etc/redis/6379.conf] 
Selected default - /etc/redis/6379.conf
Please select the redis log file name [/var/log/redis_6379.log] 
Selected default - /var/log/redis_6379.log
Please select the data directory for this instance [/var/lib/redis/6379] 
Selected default - /var/lib/redis/6379
Please select the redis executable path [/usr/local/bin/redis-server] 
Selected config:
Port           : 6379
Config file    : /etc/redis/6379.conf
Log file       : /var/log/redis_6379.log
Data dir       : /var/lib/redis/6379
Executable     : /usr/local/bin/redis-server
Cli Executable : /usr/local/bin/redis-cli
Is this ok? Then press ENTER to go on or Ctrl-C to abort.
Copied /tmp/6379.conf => /etc/init.d/redis_6379
Installing service...
Successfully added to chkconfig!
Successfully added to runlevels 345!
Starting Redis server...
Installation successful!
[root@redis-node3 utils]# 
[root@redis-node3 utils]# vim /etc/redis/6379.conf
[root@redis-node3 utils]# /etc/init.d/redis_6379 restart
Stopping ...
Redis stopped
Starting Redis server...

redis的主从复制

[root@redis-node2 utils]# vim /etc/redis/6379.conf
[root@redis-node2 utils]# /etc/init.d/redis_6379 restart
Stopping ...
Redis stopped
Starting Redis server...
[root@redis-node2 utils]# 
[root@redis-node2 utils]# redis-cli 
127.0.0.1:6379> get name
"lee"

[root@redis-node3 utils]# vim /etc/redis/6379.conf 
[root@redis-node3 utils]# /etc/init.d/redis_6379 restart
Stopping ...
Redis stopped
Starting Redis server...
[root@redis-node3 utils]# 
[root@redis-node3 utils]# redis-cli 
127.0.0.1:6379> get name
"lee"

redis哨兵

[root@redis-node1 ~]# ls
anaconda-ks.cfg  redis-7.4.0  redis-7.4.0.tar.gz
[root@redis-node1 ~]# cd redis-7.4.0/
[root@redis-node1 redis-7.4.0]# ls
00-RELEASENOTES     INSTALL      redis.conf              runtest-sentinel  TLS.md
BUGS                LICENSE.txt  REDISCONTRIBUTIONS.txt  SECURITY.md       utils
CODE_OF_CONDUCT.md  Makefile     runtest                 sentinel.conf
CONTRIBUTING.md     MANIFESTO    runtest-cluster         src
deps                README.md    runtest-moduleapi       tests
[root@redis-node1 redis-7.4.0]# cp sentinel.conf /etc/redis/
[root@redis-node1 redis-7.4.0]# vim /etc/redis/sentinel.conf
[root@redis-node1 redis-7.4.0]# scp /etc/redis/sentinel.conf root@172.25.254.20:/etc/redis/sentinel.conf
root@172.25.254.20's password: 
sentinel.conf                                    100%   14KB  10.6MB/s   00:00    
[root@redis-node1 redis-7.4.0]# scp /etc/redis/sentinel.conf root@172.25.254.30:/etc/redis/sentinel.conf
root@172.25.254.30's password: 
sentinel.conf                                    100%   14KB  10.5MB/s   00:00    
[root@redis-node1 redis-7.4.0]# 
[root@redis-node1 redis-7.4.0]# cd /etc/redis/
[root@redis-node1 redis]# ls
6379.conf  sentinel.conf
[root@redis-node1 redis]# cp sentinel.conf sentinel.conf.bak

[root@redis-node1 redis]# redis-sentinel /etc/redis/sentinel.conf

[root@redis-node2 ~]# cd /etc/redis/
[root@redis-node2 redis]# ls
6379.conf  sentinel.conf
[root@redis-node2 redis]# cp sentinel.conf sentinel.conf.bak

[root@redis-node2 redis]# redis-sentinel /etc/redis/sentinel.conf

[root@redis-node3 ~]# cd /etc/redis/
[root@redis-node3 redis]# ls
6379.conf  sentinel.conf
[root@redis-node3 redis]# cp sentinel.conf sentinel.conf.bak

[root@redis-node3 redis]# redis-sentinel /etc/redis/sentinel.conf

测试：

redis cluster

克隆：redis-node110、redis-node120、redis-node130

vmset.sh eth0 172.25.254.110 redis-node110.test.org

vmset.sh eth0 172.25.254.120 redis-node120.test.org

vmset.sh eth0 172.25.254.130 redis-node130.test.org

[root@redis-node1 redis]# cd /root/redis-7.4.0/
[root@redis-node1 redis-7.4.0]# /etc/init.d/redis_6379 stop
Stopping ...
Redis stopped
[root@redis-node1 redis-7.4.0]# ps aux | grep redis
root        7666  0.0  0.3   6408  2296 pts/1    S+   18:42   0:00 grep --color=auto redis
[root@redis-node1 redis-7.4.0]# make uninstall
cd src && make uninstall
make[1]: Entering directory '/root/redis-7.4.0/src'
rm -f /usr/local/bin/{redis-server,redis-benchmark,redis-cli,redis-check-rdb,redis-check-aof,redis-sentinel}
make[1]: Leaving directory '/root/redis-7.4.0/src'
[root@redis-node1 redis-7.4.0]# 
[root@redis-node1 redis-7.4.0]# cd
[root@redis-node1 ~]# dnf install redis -y


[root@redis-node1 ~]# vim /etc/redis/redis.conf
[root@redis-node1 ~]# systemctl enable --now redis
Created symlink /etc/systemd/system/multi-user.target.wants/redis.service → /usr/lib/systemd/system/redis.service.
[root@redis-node1 ~]# systemctl restart redis.service
[root@redis-node1 ~]# netstat -antlupe | grep redis
tcp        0      0 0.0.0.0:16379           0.0.0.0:*               LISTEN      991        40761      7919/redis-server * 
tcp        0      0 0.0.0.0:6379            0.0.0.0:*               LISTEN      991        40759      7919/redis-server * 
tcp6       0      0 :::16379                :::*                    LISTEN      991        40762      7919/redis-server * 
tcp6       0      0 :::6379                 :::*                    LISTEN      991        40760      7919/redis-server * 
[root@redis-node1 ~]# 
[root@redis-node1 ~]# redis-cli 
-bash: /usr/local/bin/redis-cli: No such file or directory
[root@redis-node1 ~]# exit


[root@redis-node1 ~]# redis-cli 
127.0.0.1:6379> auth 123456
OK
127.0.0.1:6379> keys *
(empty array)



[root@redis-node1 ~]# for i in 20 30 110 120 130
> do
> scp /etc/redis/redis.conf root@172.25.254.$i:/etc/redis/redis.conf
> done

[root@redis-node2 redis-7.4.0]# cd
[root@redis-node2 ~]# dnf install redis -y


[root@redis-node2 ~]# vim /etc/hosts 
[root@redis-node2 ~]# systemctl enable --now redis

[root@redis-node2 ~]# exit
[root@redis-node2 ~]# redis-cli -a 123456
Warning: Using a password with '-a' or '-u' option on the command line interface may not be safe.
127.0.0.1:6379> set name lee
OK

[root@redis-node3 redis-7.4.0]# cd
[root@redis-node3 ~]# dnf install redis -y


[root@redis-node3 ~]# vim /etc/hosts 
[root@redis-node3 ~]# systemctl enable --now redis

[root@redis-node3 ~]# exit
[root@redis-node3 ~]# redis-cli -a 123456
Warning: Using a password with '-a' or '-u' option on the command line interface may not be safe.
127.0.0.1:6379> get name
(error) MOVED 5798 172.25.254.20:6379

[root@redis-node110 ~]# dnf install redis -y
[root@redis-node110 ~]# vim /etc/hosts 
[root@redis-node110 ~]# systemctl enable --now redis

[root@redis-node120 ~]# dnf install redis -y
[root@redis-node120 ~]# vim /etc/hosts 
[root@redis-node120 ~]# systemctl enable --now redis

[root@redis-node130 ~]# dnf install redis -y
[root@redis-node130 ~]# vim /etc/hosts 
[root@redis-node130 ~]# systemctl enable --now redis

[root@redis-node1 ~]# redis-cli --cluster create -a 123456 \
> 172.25.254.10:6379 172.25.254.20:6379 172.25.254.30:6379 \
> 172.25.254.110:6379 172.25.254.120:6379 172.25.254.130:6379 \
> --cluster-replicas 1
...
>>> Performing Cluster Check (using node 172.25.254.10:6379)
M: 51942ff68767525da5b43516d5a1ac6d3a4236c0 172.25.254.10:6379
   slots:[0-5460] (5461 slots) master
   1 additional replica(s)
S: f775d5a125e9056a699f6ef324566e3024c8eba4 172.25.254.110:6379
   slots: (0 slots) slave
   replicates 53eaf5b37b8961c67beed67abe67a4fdb568ba06
S: 2a8f1dfd906a1638fdcfc771dc24f00a21b5e8bf 172.25.254.120:6379
   slots: (0 slots) slave
   replicates 51942ff68767525da5b43516d5a1ac6d3a4236c0
M: bd12ca08ea95bdc5abb1f52e35d6bb825611ba72 172.25.254.20:6379
   slots:[5461-10922] (5462 slots) master
   1 additional replica(s)
M: 53eaf5b37b8961c67beed67abe67a4fdb568ba06 172.25.254.30:6379
   slots:[10923-16383] (5461 slots) master
   1 additional replica(s)
S: aafeaea3cf23aa110960219c8b000946d94dd8a8 172.25.254.130:6379
   slots: (0 slots) slave
   replicates bd12ca08ea95bdc5abb1f52e35d6bb825611ba72
...


#20被推选，所以10不能创建
[root@redis-node1 ~]# redis-cli -a 123456
Warning: Using a password with '-a' or '-u' option on the command line interface may not be safe.
127.0.0.1:6379> set name lee
(error) MOVED 5798 172.25.254.20:6379

集群扩容

克隆：redis50、redis150 #都是1G 1内核

vmset.sh eth0 172.25.254.50 redis50.silingchuan.org

vmset.sh eth0 172.25.254.150 redis150.silingchuan.org

50 150：

dnf install redis -y

[root@redis-node2 ~]# scp /etc/redis/redis.conf root@172.25.254.50:/etc/redis/redis.conf

[root@redis-node2 ~]# scp /etc/redis/redis.conf root@172.25.254.150:/etc/redis/redis.conf

[root@redis-node50 ~]# dnf install redis -y
[root@redis-node50 ~]# systemctl start redis

[root@redis-node150 ~]# dnf install redis -y
[root@redis-node150 ~]# systemctl start redis

新增50master

[root@redis-node2 ~]# redis-cli -a 123456 --cluster add-node 172.25.254.50:6379 172.25.254.20:6379

[root@redis-node2 ~]# redis-cli -a 123456 --cluster check 172.25.254.10:6379

共享槽位

[root@redis-node2 ~]# redis-cli -a 123456 --cluster reshard 172.25.254.20:6379

(4096 50-ID all yes)

新增150slave

[root@redis-node2 ~]# redis-cli -a 123456 --cluster add-node 172.25.254.150:6379 172.25.254.20:6379 --cluster-slave --cluster-master-id 2ce4bedb48252ca1c7030586d45d1b271490176a

移除150：

[root@redis-node2 ~]# redis-cli -a 123456 --cluster del-node  172.25.254.150:6379 6ab4d6ec8aab005c3934f6bfa272a6be77545cbb

清空槽位：

[root@redis-node2 ~]# redis-cli -a 123456 --cluster  reshard 172.25.254.20:6379

(4096 20-ID 50-ID done yes)

移除50：

[root@redis-node2 ~]# redis-cli -a 123456 --cluster del-node  172.25.254.50:6379 2ce4bedb48252ca1c7030586d45d1b271490176a

查看全文

http://www.kler.cn/a/284080.html

算法——二分查找（leetcode704）

const限定符-C语言中指针的“可变与不可变”法则

Linux探秘坊-------1.系统核心的低语：基础指令的奥秘解析（1）

大数据面试题--kafka夺命连环问（后10问）

管家婆财贸ERP BB059.银行流水导入对账

什么是两化融合

Underactuated Robotics - 欠驱动机器人学（三）- 体操机器人、小车摆杆和四旋翼飞行器

pyhton - PyHive

金融上云方案中，国产虚拟化产品选型的重点考虑因素、自动化运维建设步骤及如何进行保障数据中心安全需求的存储设计等问题及解决方法|金融行业数字化QA合集③

77. 组合

shell脚本编写注意事项

《计算机操作系统》（第4版）第12章保护和安全复习笔记

HTTPS一定安全吗

综合布线智能运维管理方案

【Spring Boot 3】【Web】ProblemDetail

【K8s】专题十二（4）：Kubernetes 存储之 StorageClass

Python通过读取配置文件开发数据库链接脚本工具（统一封装 mysql，mongodb，redis，达梦，人大进仓等主流国内外数据库）

【Nginx】若依用nginx部署，prod-api没有成功转发到8080端口

8.30工作笔记

Flask蓝图的作用

RTPS协议之PSM:UDP/IP

CentOS7安装docker小记

Spark SQL Hints：优化查询性能的利器

基于 Transformer 的深度学习混合架构用于相位展开

ctfshow之web55~web57（无字母的rce）

Leetcode 第 136 场双周赛题解