1、搭建Redis 主從復(fù)制 
----------------------------------------
Master節(jié)點(diǎn)： 192.168.10.23
Slave1節(jié)點(diǎn)： 192.168.10.14
Slave2節(jié)點(diǎn)： 192.168.10.15

systemctl stop firewalld
setenforce 0

2、安裝 Redis
----------------------------
yum install -y gcc gcc-c++ make

tar zxvf redis-5.0.7.tar.gz -C /opt/

wget -p /opt http://download.redis.io/releases/redis-5.0.7.tar.gz
cd /opt/redis-5.0.7/
make
make PREFIX=/usr/local/redis install

cd /opt/redis-5.0.7/utils
./install_server.sh
......
Please select the redis executable path [/usr/local/bin/redis-server] /usr/local/redis/bin/redis-server  	

ln -s /usr/local/redis/bin/* /usr/local/bin/


3、修改 Redis 配置文件（Master節(jié)點(diǎn)操作）
-----------------------------------------------
vim /etc/redis/6379.conf
bind 0.0.0.0						#70行，修改監(jiān)聽(tīng)地址為0.0.0.0
daemonize yes						#137行，開(kāi)啟守護(hù)進(jìn)程
logfile /var/log/redis_6379.log		#172行，指定日志文件目錄
dir /var/lib/redis/6379				#264行，指定工作目錄
appendonly yes						#700行，開(kāi)啟AOF持久化功能


/etc/init.d/redis_6379 restart


4、修改 Redis 配置文件（Slave節(jié)點(diǎn)操作）
-----------------------------------------------------
vim /etc/redis/6379.conf
bind 0.0.0.0						#70行，修改監(jiān)聽(tīng)地址為0.0.0.0
daemonize yes						#137行，開(kāi)啟守護(hù)進(jìn)程
logfile /var/log/redis_6379.log		#172行，指定日志文件目錄
dir /var/lib/redis/6379				#264行，指定工作目錄		#288行，指定要同步的Master節(jié)點(diǎn)IP和端口
replicaof 192.168.10.23 6379
appendonly yes						#700行，開(kāi)啟AOF持久化功能

/etc/init.d/redis_6379 restart

5、驗(yàn)證主從效果
--------------------------------
在Master節(jié)點(diǎn)上看日志：
tail -f /var/log/redis_6379.log 
Replica 192.168.10.14:6379 asks for synchronization
Replica 192.168.10.15:6379 asks for synchronization

在Master節(jié)點(diǎn)上驗(yàn)證從節(jié)點(diǎn)：
redis-cli info replication

# Replication
role:master
connected_slaves:2
slave0:ip=192.168.10.18,port=6379,state=online,offset=1246,lag=0
slave1:ip=192.168.10.19,port=6379,state=online,offset=1246,lag=1

驗(yàn)證：在主上添加一個(gè)數(shù)據(jù)，看從上有沒(méi)有。

1、搭建Redis 哨兵模式 

Master節(jié)點(diǎn)：192.168.10.23
Slave1節(jié)點(diǎn)：192.168.10.14
Slave2節(jié)點(diǎn)：192.168.10.15

systemctl stop firewalld
setenforce 0
----------------------------------------
2、修改 Redis 哨兵模式的配置文件（所有節(jié)點(diǎn)操作）

vim /opt/redis-5.0.7/sentinel.conf
protected-mode no								#17行，關(guān)閉保護(hù)模式
port 26379										#21行，Redis哨兵默認(rèn)的監(jiān)聽(tīng)端口
daemonize yes									#26行，指定sentinel為后臺(tái)啟動(dòng)
logfile "/var/log/sentinel.log"					#36行，指定日志存放路徑
dir "/var/lib/redis/6379"						#65行，指定數(shù)據(jù)庫(kù)存放路徑
sentinel monitor mymaster 192.168.10.23 6379 2	#84行，修改 指定該哨兵節(jié)點(diǎn)監(jiān)控192.168.10.23:6379這個(gè)主節(jié)點(diǎn)，該主節(jié)點(diǎn)的名稱(chēng)是mymaster，最后的2的含義與主節(jié)點(diǎn)的故障判定有關(guān)：至少需要2個(gè)哨兵節(jié)點(diǎn)同意，才能判定主節(jié)點(diǎn)故障并進(jìn)行故障轉(zhuǎn)移
sentinel down-after-milliseconds mymaster 30000	#113行，判定服務(wù)器down掉的時(shí)間周期，默認(rèn)30000毫秒（30秒）
sentinel failover-timeout mymaster 180000		#146行，故障節(jié)點(diǎn)的最大超時(shí)時(shí)間為180000（180秒）
--------------------------------------------------------------------------------------------

3、啟動(dòng)哨兵模式

先啟master，再啟slave
cd /opt/redis-5.0.7/
redis-sentinel sentinel.conf &

--------------------------------------------------------------------------------------------

3、查看哨兵信息

redis-cli -p 26379 info Sentinel

# Sentinel

sentinel_masters:1
sentinel_tilt:0
sentinel_running_scripts:0
sentinel_scripts_queue_length:0
sentinel_simulate_failure_flags:0
master0:name=mymaster,status=ok,address=192.168.20.23:6379,slaves=2,sentinels=3
--------------------------------------------------------------------------------------------

4、故障模擬
#查看redis-server進(jìn)程號(hào)：
ps -ef | grep redis
root      57031      1  0 15:20 ?        00:00:07 /usr/local/bin/redis-server 0.0.0.0:6379
root      57742      1  1 16:05 ?        00:00:07 redis-sentinel *:26379 [sentinel]
root      57883  57462  0 16:17 pts/1    00:00:00 grep --color=auto redis

#殺死 Master 節(jié)點(diǎn)上redis-server的進(jìn)程號(hào)
kill -9 57031			#Master節(jié)點(diǎn)上redis-server的進(jìn)程號(hào)

#驗(yàn)證結(jié)果
tail -f /var/log/sentinel.log
23062:X 18 Sep 2025 22:36:04.175 # +monitor master mymaster 192.168.10.23 6379 quorum 2
23062:X 18 Sep 2025 22:36:04.176 * +slave slave 192.168.10.14:6379 192.168.10.14 6379 @ mymaster 192.168.10.23 6379
23062:X 18 Sep 2025 22:36:04.178 * +slave slave 192.168.10.15:6379 192.168.10.15 6379 @ mymaster 192.168.10.23 6379
23062:X 18 Sep 2025 22:36:11.142 * +sentinel sentinel 2d97f3ac6e2ca4a7ecdf456264324b519edae80e 192.168.10.14 26379 @ mymaster 192.168.10.23 6379
23062:X 18 Sep 2025 22:36:13.326 * +sentinel sentinel 0fef2cc38d8db8ccefad0466290bcd1057e16aa9 192.168.10.15 26379 @ mymaster 192.168.10.23 6379
23066:X 18 Sep 2025 22:36:19.027 # oO0OoO0OoO0Oo Redis is starting oO0OoO0OoO0Oo
23066:X 18 Sep 2025 22:36:19.027 # Redis version=5.0.7, bits=64, commit=00000000, modified=0, pid=23066, just started
23066:X 18 Sep 2025 22:36:19.027 # Configuration loaded
23067:X 18 Sep 2025 22:36:19.028 * Increased maximum number of open files to 10032 (it was originally set to 1024).
23067:X 18 Sep 2025 22:36:19.028 # Could not create server TCP listening socket *:26379: bind: Address already in use
23062:X 18 Sep 2025 22:37:50.104 # +sdown master mymaster 192.168.10.23 6379
23062:X 18 Sep 2025 22:37:50.178 # +new-epoch 1
23062:X 18 Sep 2025 22:37:50.179 # +vote-for-leader 0fef2cc38d8db8ccefad0466290bcd1057e16aa9 1
23062:X 18 Sep 2025 22:37:50.560 # +config-update-from sentinel 0fef2cc38d8db8ccefad0466290bcd1057e16aa9 192.168.10.15 26379 @ mymaster 192.168.10.23 6379
23062:X 18 Sep 2025 22:37:50.560 # +switch-master mymaster 192.168.10.23 6379 192.168.10.15 6379
23062:X 18 Sep 2025 22:37:50.561 * +slave slave 192.168.10.14:6379 192.168.10.14 6379 @ mymaster 192.168.10.15 6379
23062:X 18 Sep 2025 22:37:50.561 * +slave slave 192.168.10.23:6379 192.168.10.23 6379 @ mymaster 192.168.10.15 6379
23062:X 18 Sep 2025 22:38:20.584 # +sdown slave 192.168.10.23:6379 192.168.10.23 6379 @ mymaster 192.168.10.15 6379
^C

--------------------------------------------------------------------------------------------

##查看master是否被切換
redis-cli -p 26379 INFO Sentinel

# Sentinel
sentinel_masters:1
sentinel_tilt:0
sentinel_running_scripts:0
sentinel_scripts_queue_length:0
sentinel_simulate_failure_flags:0
master0:name=mymaster,status=ok,address=192.168.10.14:6379,slaves=2,sentinels=3

1、搭建Redis 群集模式 ----------------------------------------
redis的集群一般需要6個(gè)節(jié)點(diǎn)，3主3從。方便起見(jiàn)，這里所有節(jié)點(diǎn)在同一臺(tái)服務(wù)器上模擬：
以端口號(hào)進(jìn)行區(qū)分：3個(gè)主節(jié)點(diǎn)端口號(hào)：6001/6002/6003，對(duì)應(yīng)的從節(jié)點(diǎn)端口號(hào)：6004/6005/6006。

cd /etc/redis/
mkdir -p redis-cluster/redis600{1..6}

for i in {1..6}
do
cp /opt/redis-5.0.7/redis.conf /etc/redis/redis-cluster/redis600$i
cp /opt/redis-5.0.7/src/redis-cli /opt/redis-5.0.7/src/redis-server /etc/redis/redis-cluster/redis600$i
done

2、#開(kāi)啟群集功能：
#其他5個(gè)文件夾的配置文件以此類(lèi)推修改，注意6個(gè)端口都要不一樣。
cd /etc/redis/redis-cluster/redis6001
vim redis.conf
#bind 127.0.0.1							#69行，注釋掉bind 項(xiàng)，默認(rèn)監(jiān)聽(tīng)所有網(wǎng)卡
protected-mode no						#88行，修改，關(guān)閉保護(hù)模式
port 6001								#92行，修改，redis監(jiān)聽(tīng)端口，
daemonize yes							#136行，開(kāi)啟守護(hù)進(jìn)程，以獨(dú)立進(jìn)程啟動(dòng)
cluster-enabled yes						#832行，取消注釋?zhuān)_(kāi)啟群集功能
cluster-config-file nodes-6001.conf		#840行，取消注釋?zhuān)杭Q(chēng)文件設(shè)置
cluster-node-timeout 15000				#846行，取消注釋群集超時(shí)時(shí)間設(shè)置
appendonly yes							#700行，修改，開(kāi)啟AOF持久化

3、#啟動(dòng)redis節(jié)點(diǎn)
分別進(jìn)入那六個(gè)文件夾，執(zhí)行命令：redis-server redis.conf ，來(lái)啟動(dòng)redis節(jié)點(diǎn)
cd /etc/redis/redis-cluster/redis6001
redis-server redis.conf

for d in {1..6}
do
cd /etc/redis/redis-cluster/redis600$d
redis-server redis.conf
done

ps -ef | grep redis

4、#啟動(dòng)集群
redis-cli --cluster create 127.0.0.1:6001 127.0.0.1:6002 127.0.0.1:6003 127.0.0.1:6004 127.0.0.1:6005 127.0.0.1:6006 --cluster-replicas 1

#六個(gè)實(shí)例分為三組，每組一主一從，前面的做主節(jié)點(diǎn)，后面的做從節(jié)點(diǎn)。下面交互的時(shí)候 需要輸入 yes 才可以創(chuàng)建。
--replicas 1 表示每個(gè)主節(jié)點(diǎn)有1個(gè)從節(jié)點(diǎn)。

5、#測(cè)試群集
redis-cli -p 6001 -c					#加-c參數(shù)，節(jié)點(diǎn)之間就可以互相跳轉(zhuǎn)
127.0.0.1:6001> cluster slots			#查看節(jié)點(diǎn)的哈希槽編號(hào)范圍
1) 1) (integer) 5461
   2) (integer) 10922									#哈希槽編號(hào)范圍
   3) 1) "127.0.0.1"
      2) (integer) 6003									#主節(jié)點(diǎn)IP和端口號(hào)
      3) "fdca661922216dd69a63a7c9d3c4540cd6baef44"
   4) 1) "127.0.0.1"
      2) (integer) 6004									#從節(jié)點(diǎn)IP和端口號(hào)
      3) "a2c0c32aff0f38980accd2b63d6d952812e44740"
2) 1) (integer) 0
   2) (integer) 5460
   3) 1) "127.0.0.1"
      2) (integer) 6001
      3) "0e5873747a2e26bdc935bc76c2bafb19d0a54b11"
   4) 1) "127.0.0.1"
      2) (integer) 6006
      3) "8842ef5584a85005e135fd0ee59e5a0d67b0cf8e"
3) 1) (integer) 10923
   2) (integer) 16383
   3) 1) "127.0.0.1"
      2) (integer) 6002
      3) "816ddaa3d1469540b2ffbcaaf9aa867646846b30"
   4) 1) "127.0.0.1"
      2) (integer) 6005
      3) "f847077bfe6722466e96178ae8cbb09dc8b4d5eb"
#設(shè)置數(shù)據(jù)
127.0.0.1:6001> set name zhangsan
-> Redirected to slot [5798] located at 127.0.0.1:6003
OK

127.0.0.1:6001> cluster keyslot name					#查看name鍵的槽編號(hào)

redis-cli -p 6006 -c
127.0.0.1:6004> keys *							#對(duì)應(yīng)的slave節(jié)點(diǎn)也有這條數(shù)據(jù)，但是別的節(jié)點(diǎn)沒(méi)有
1) "name"