柚子快報(bào)激活碼778899分享：緩存 Redis 主從搭建

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Redis主從搭建 7.2.5

文章目錄

一. 同主機(jī)搭建Redis主從1. 環(huán)境介紹2. 環(huán)境前準(zhǔn)備工作3. 安裝 Redis 7.2.54. redis 配置修改并且啟動(dòng)4.1 修改配置文件4.2 編寫(xiě)啟動(dòng)腳本

5. 開(kāi)啟主從5.1 開(kāi)啟5.2 主庫(kù)實(shí)例查看主從信息5.3 從庫(kù)實(shí)例查看主從信息5.4 驗(yàn)證主從配置是否生效

6. 解除 192.168.1.100:16372 實(shí)例主從

二. 跨節(jié)點(diǎn)部署Redis主從1. 環(huán)境介紹2. 修改配置文件2.1 master2.2 slave 12.3 slave 2

3.啟動(dòng)Redis3.1 master3.2 slave 13.3 slave 2

4. 開(kāi)啟主從4.1 slave 14.2 slave 24.3 master

5. 驗(yàn)證主從配置是否生效

一. 同主機(jī)搭建Redis主從

1. 環(huán)境介紹

同機(jī)器 一主兩從

操作系統(tǒng)Centos 7內(nèi)核版本Linux 3.10.0-957.el7.x86_64主機(jī)名稱(chēng)master-salveIP地址192.168.1.100端口master: 16370 slave1: 16371 slave2: 16372Redis7.2.5

2. 環(huán)境前準(zhǔn)備工作

# 關(guān)閉防火墻

systemctl stop firewalld

systemctl disable firewalld

# 修改 hostname

hostnamectl set-hostname xxxx # 修改后退出當(dāng)前終端重新連接即可

# 更新下軟件源

# 地址 https://developer.aliyun.com/mirror/

# 時(shí)區(qū)調(diào)整，時(shí)間校準(zhǔn)

date -R

timedatectl set-timezone Asia/Shanghai

yum -y install ntp

ntpdate ntp1.aliyun.com

# 關(guān)閉 selinux：

sed -i 's/enforcing/disabled/' /etc/selinux/config

setenforce 0

3. 安裝 Redis 7.2.5

# 下載地址

http://download.redis.io/releases/

# 下載

wget http://download.redis.io/releases/redis-7.2.5.tar.gz

# 解壓

tar -xf redis-7.2.5.tar.gz -C /opt/redis

# 編譯

make MALLOC=libc

# 安裝 注意如果安裝提示python3不存在 執(zhí)行 yum install -y python3

make install PREFIX=/usr/local/redis

# 配置環(huán)境變量

vi /etc/profile.d/redis.sh

#!/bin/bash

export REDIS_HOME=/usr/local/redis

export PATH=$PATH:$REDIS_HOME/bin

# 使其配置生效

source /etc/profile.d/redis.sh

4. redis 配置修改并且啟動(dòng)

4.1 修改配置文件

# 創(chuàng)建redis數(shù)據(jù)存儲(chǔ)目錄

mkdir -p /usr/local/redis/data/1637{0..2}

# 創(chuàng)建redis配置文件存儲(chǔ)目錄

mkdir -p /usr/local/redis/conf/1637{0..2}

# 創(chuàng)建redis日志存儲(chǔ)目錄

mkdir -p /usr/local/redis/log/1637{0..2}

# 創(chuàng)建redis pid存儲(chǔ)目錄

mkdir /usr/local/redis/run

# redis配置文件 16370

# 開(kāi)啟保護(hù)模式

protected-mode yes

# 添加本機(jī)的ip

bind 192.168.1.100

# 端口　　

port 16370

# pid存儲(chǔ)目錄

pidfile /usr/local/redis/run/redis_16370.pid

# 日志存儲(chǔ)目錄

logfile /usr/local/redis/log/16370/redis_16370.log

# 數(shù)據(jù)存儲(chǔ)目錄，目錄要提前創(chuàng)建好

dir /usr/local/redis/data/16370

# 設(shè)置實(shí)例的驗(yàn)證口令

requirepass dongdong

# 以認(rèn)證的方式連接到master。 如果master中使用了“密碼保護(hù)”，slave必須交付正確的授權(quán)密碼，才能連接成功。

# 此配置項(xiàng)中值需要和master機(jī)器的“requirepass”保持一致

masterauth dongdong

# 配置RDB持久化策略

save 900 1

save 300 10

save 60 10000

# 配置AOF持久化

appendonly yes

appendfsync everysec

# 守護(hù)進(jìn)程

daemonize yes

# redis配置文件 16371

# 開(kāi)啟保護(hù)模式

protected-mode yes

# 添加本機(jī)的ip

bind 192.168.1.100

# 端口　　

port 16371

# pid存儲(chǔ)目錄

pidfile /usr/local/redis/run/redis_16371.pid

# 日志存儲(chǔ)目錄

logfile /usr/local/redis/log/16370/redis_16371.log

# 數(shù)據(jù)存儲(chǔ)目錄，目錄要提前創(chuàng)建好

dir /usr/local/redis/data/16371

# 設(shè)置實(shí)例的驗(yàn)證口令

requirepass dongdong

# 以認(rèn)證的方式連接到master。 如果master中使用了“密碼保護(hù)”，slave必須交付正確的授權(quán)密碼，才能連接成功。

# 此配置項(xiàng)中值需要和master機(jī)器的“requirepass”保持一致

masterauth dongdong

# 配置RDB持久化策略

save 900 1

save 300 10

save 60 10000

# 配置AOF持久化

appendonly yes

appendfsync everysec

# 守護(hù)進(jìn)程

daemonize yes

# redis配置文件 16372

# 開(kāi)啟保護(hù)模式

protected-mode yes

# 添加本機(jī)的ip

bind 192.168.1.100

# 端口　　

port 16372

# pid存儲(chǔ)目錄

pidfile /usr/local/redis/run/redis_16372.pid

# 日志存儲(chǔ)目錄

logfile /usr/local/redis/log/16370/redis_16372.log

# 數(shù)據(jù)存儲(chǔ)目錄，目錄要提前創(chuàng)建好

dir /usr/local/redis/data/16372

# 設(shè)置實(shí)例的驗(yàn)證口令

requirepass dongdong

# 以認(rèn)證的方式連接到master。 如果master中使用了“密碼保護(hù)”，slave必須交付正確的授權(quán)密碼，才能連接成功。

# 此配置項(xiàng)中值需要和master機(jī)器的“requirepass”保持一致

masterauth dongdong

# 配置RDB持久化策略

save 900 1

save 300 10

save 60 10000

# 配置AOF持久化

appendonly yes

appendfsync everysec

# 守護(hù)進(jìn)程

daemonize yes

# 復(fù)制下面命令即可

cat > /usr/local/redis/conf/redis_16370.conf <

# 開(kāi)啟保護(hù)模式

protected-mode yes

# 添加本機(jī)的ip

bind 192.168.1.100

# 端口　　

port 16370

# pid存儲(chǔ)目錄

pidfile /usr/local/redis/run/redis_16370.pid

# 日志存儲(chǔ)目錄

logfile /usr/local/redis/log/16370/redis_16370.log

# 數(shù)據(jù)存儲(chǔ)目錄，目錄要提前創(chuàng)建好

dir /usr/local/redis/data/16370

# 設(shè)置實(shí)例的驗(yàn)證口令

requirepass dongdong

# 以認(rèn)證的方式連接到master。 如果master中使用了“密碼保護(hù)”，slave必須交付正確的授權(quán)密碼，才能連接成功。

# 此配置項(xiàng)中值需要和master機(jī)器的“requirepass”保持一致

masterauth dongdong

# 配置RDB持久化策略

save 900 1

save 300 10

save 60 10000

# 配置AOF持久化

appendonly yes

appendfsync everysec

# 守護(hù)進(jìn)程

daemonize yes

EOF

cat > /usr/local/redis/conf/redis_16371.conf <

# 開(kāi)啟保護(hù)模式

protected-mode yes

# 添加本機(jī)的ip

bind 192.168.1.100

# 端口　　

port 16371

# pid存儲(chǔ)目錄

pidfile /usr/local/redis/run/redis_16371.pid

# 日志存儲(chǔ)目錄

logfile /usr/local/redis/log/16370/redis_16371.log

# 數(shù)據(jù)存儲(chǔ)目錄，目錄要提前創(chuàng)建好

dir /usr/local/redis/data/16371

# 設(shè)置實(shí)例的驗(yàn)證口令

requirepass dongdong

# 以認(rèn)證的方式連接到master。 如果master中使用了“密碼保護(hù)”，slave必須交付正確的授權(quán)密碼，才能連接成功。

# 此配置項(xiàng)中值需要和master機(jī)器的“requirepass”保持一致

masterauth dongdong

# 配置RDB持久化策略

save 900 1

save 300 10

save 60 10000

# 配置AOF持久化

appendonly yes

appendfsync everysec

# 守護(hù)進(jìn)程

daemonize yes

EOF

cat > /usr/local/redis/conf/redis_16372.conf <

# 開(kāi)啟保護(hù)模式

protected-mode yes

# 添加本機(jī)的ip

bind 192.168.1.100

# 端口　　

port 16372

# pid存儲(chǔ)目錄

pidfile /usr/local/redis/run/redis_16372.pid

# 日志存儲(chǔ)目錄

logfile /usr/local/redis/log/16370/redis_16372.log

# 數(shù)據(jù)存儲(chǔ)目錄，目錄要提前創(chuàng)建好

dir /usr/local/redis/data/16372

# 設(shè)置實(shí)例的驗(yàn)證口令

requirepass dongdong

# 以認(rèn)證的方式連接到master。 如果master中使用了“密碼保護(hù)”，slave必須交付正確的授權(quán)密碼，才能連接成功。

# 此配置項(xiàng)中值需要和master機(jī)器的“requirepass”保持一致

masterauth dongdong

# 配置RDB持久化策略

save 900 1

save 300 10

save 60 10000

# 配置AOF持久化

appendonly yes

appendfsync everysec

# 守護(hù)進(jìn)程

daemonize yes

EOF

4.2 編寫(xiě)啟動(dòng)腳本

# 啟動(dòng)腳本

cat > /usr/local/redis/bin/master-slave_start.sh << EOF

#!/bin/bash

redis-server /usr/local/redis/conf/redis_16370.conf

redis-server /usr/local/redis/conf/redis_16371.conf

redis-server /usr/local/redis/conf/redis_16372.conf

EOF

# 賦予可執(zhí)行權(quán)限

chmod +x /usr/local/redis/bin/master-slave_start.sh

# 關(guān)閉腳本

vi /usr/local/redis/bin/master-slave_shutdown.sh

#!/bin/bash

kill -9 $(ps -ef | grep 1637 | grep -v grep | awk '{print $2}')

# 賦予可執(zhí)行權(quán)限

chmod +x /usr/local/redis/bin/master-slave_shutdown.sh

5. 開(kāi)啟主從

5.1 開(kāi)啟

# 以"192.168.1.100:16370"實(shí)例為主庫(kù)，以"192.168.1.100:16371"實(shí)例和"192.168.1.100:16372"實(shí)例為從庫(kù)。

# -a 參數(shù)指定密碼

# 從庫(kù)實(shí)例開(kāi)啟主從

redis-cli -h 192.168.1.100 -p 16371 -a dongdong slaveof 192.168.1.100 16370

redis-cli -h 192.168.1.100 -p 16372 -a dongdong slaveof 192.168.1.100 16370

# Warning: Using a password with '-a' or '-u' option on the command line interface may not be safe.

# 警告：在命令行界面上使用帶有“-a”或“-u”選項(xiàng)的密碼可能不安全。 可以忽略

# 解決方式

# redis-cli -h 192.168.1.100 -p 16371 -a dongdong --no-auth-warning slaveof 192.168.1.100 16370

5.2 主庫(kù)實(shí)例查看主從信息

redis-cli -h 192.168.1.100 -p 16370 -a dongdong info replication

[root@master-slave ~]# redis-cli -h 192.168.1.100 -p 16370 -a dongdong info replication

Warning: Using a password with '-a' or '-u' option on the command line interface may not be safe.

# Replication

role:master

connected_slaves:2

slave0:ip=192.168.1.100,port=16371,state=online,offset=8428,lag=0

slave1:ip=192.168.1.100,port=16372,state=online,offset=8428,lag=1

master_failover_state:no-failover

master_replid:a292603e2c96a6f451055e6d84a60795f81f2928

master_replid2:0000000000000000000000000000000000000000

master_repl_offset:8428

second_repl_offset:-1

repl_backlog_active:1

repl_backlog_size:1048576

repl_backlog_first_byte_offset:1

repl_backlog_histlen:8428

5.3 從庫(kù)實(shí)例查看主從信息

# 192.168.1.100:16371 查看主從信息

redis-cli -h 192.168.1.100 -p 16371 -a dongdong info replication

[root@master-slave ~]# redis-cli -h 192.168.1.100 -p 16371 -a dongdong info replication

Warning: Using a password with '-a' or '-u' option on the command line interface may not be safe.

# Replication

role:slave

master_host:192.168.1.100

master_port:16370

master_link_status:up

master_last_io_seconds_ago:0

master_sync_in_progress:0

slave_read_repl_offset:8680

slave_repl_offset:8680

slave_priority:100

slave_read_only:1

replica_announced:1

connected_slaves:0

master_failover_state:no-failover

master_replid:a292603e2c96a6f451055e6d84a60795f81f2928

master_replid2:0000000000000000000000000000000000000000

master_repl_offset:8680

second_repl_offset:-1

repl_backlog_active:1

repl_backlog_size:1048576

repl_backlog_first_byte_offset:15

repl_backlog_histlen:8666

5.4 驗(yàn)證主從配置是否生效

# "192.168.1.100:16370"實(shí)例主庫(kù)的11號(hào)數(shù)據(jù)庫(kù)創(chuàng)建測(cè)試數(shù)據(jù)

redis-cli -h 192.168.1.100 -p 16370 -a dongdong -n 11

[root@master-slave ~]# redis-cli -h 192.168.1.100 -p 16370 -a dongdong -n 11

Warning: Using a password with '-a' or '-u' option on the command line interface may not be safe.

192.168.1.100:16370[11]> keys *

(empty array)

192.168.1.100:16370[11]> set name dongdong

OK

192.168.1.100:16370[11]> set age 18

OK

192.168.1.100:16370[11]> keys *

1) "age"

2) "name"

# "192.168.1.100:16371"實(shí)例從庫(kù)的11號(hào)數(shù)據(jù)庫(kù)查看是否同步主庫(kù)的11號(hào)數(shù)據(jù)庫(kù)

redis-cli -h 192.168.1.100 -p 16371 -a dongdong -n 11

[root@master-slave ~]# redis-cli -h 192.168.1.100 -p 16371 -a dongdong -n 11

Warning: Using a password with '-a' or '-u' option on the command line interface may not be safe.

192.168.1.100:16371[11]> keys *

1) "name"

2) "age"

192.168.1.100:16371[11]> get name

"dongdong"

192.168.1.100:16371[11]> get age

"18"

192.168.1.100:16371[11]>

# "192.168.1.100:16372"實(shí)例從庫(kù)的11號(hào)數(shù)據(jù)庫(kù)查看是否同步主庫(kù)的11號(hào)數(shù)據(jù)庫(kù)

redis-cli -h 192.168.1.100 -p 16372 -a dongdong -n 11

[root@master-slave ~]# redis-cli -h 192.168.1.100 -p 16372 -a dongdong -n 11

Warning: Using a password with '-a' or '-u' option on the command line interface may not be safe.

192.168.1.100:16372[11]> keys *

1) "age"

2) "name"

192.168.1.100:16372[11]> get name

"dongdong"

192.168.1.100:16372[11]> get age

"18"

192.168.1.100:16372[11]>

6. 解除 192.168.1.100:16372 實(shí)例主從

# 192.168.1.100:16372 查看主從信息

redis-cli -h 192.168.1.100 -p 16372 -a dongdong info replication

[root@master-slave ~]# redis-cli -h 192.168.1.100 -p 16372 -a dongdong info replication

Warning: Using a password with '-a' or '-u' option on the command line interface may not be safe.

# Replication

role:slave

master_host:192.168.1.100

master_port:16370

master_link_status:up

master_last_io_seconds_ago:4

master_sync_in_progress:0

slave_read_repl_offset:10003

slave_repl_offset:10003

slave_priority:100

slave_read_only:1

replica_announced:1

connected_slaves:0

master_failover_state:no-failover

master_replid:a292603e2c96a6f451055e6d84a60795f81f2928

master_replid2:0000000000000000000000000000000000000000

master_repl_offset:10003

second_repl_offset:-1

repl_backlog_active:1

repl_backlog_size:1048576

repl_backlog_first_byte_offset:155

repl_backlog_histlen:9849

# 192.168.1.100:16370 查看主從信息

redis-cli -h 192.168.1.100 -p 16370 -a dongdong info replication

[root@master-slave ~]# redis-cli -h 192.168.1.100 -p 16370 -a dongdong info replication

Warning: Using a password with '-a' or '-u' option on the command line interface may not be safe.

# Replication

role:master

connected_slaves:2

slave0:ip=192.168.1.100,port=16371,state=online,offset=10157,lag=0

slave1:ip=192.168.1.100,port=16372,state=online,offset=10157,lag=0

master_failover_state:no-failover

master_replid:a292603e2c96a6f451055e6d84a60795f81f2928

master_replid2:0000000000000000000000000000000000000000

master_repl_offset:10157

second_repl_offset:-1

repl_backlog_active:1

repl_backlog_size:1048576

repl_backlog_first_byte_offset:1

repl_backlog_histlen:10157

# 解除 192.168.1.100:16372 主從信息

redis-cli -h 192.168.1.100 -p 16372 -a dongdong slaveof no one

[root@master-slave ~]# redis-cli -h 192.168.1.100 -p 16372 -a dongdong slaveof no one

Warning: Using a password with '-a' or '-u' option on the command line interface may not be safe.

OK

# 再次查看 192.168.1.100:16370 查看主從信息

redis-cli -h 192.168.1.100 -p 16370 -a dongdong info replication

[root@master-slave ~]# redis-cli -h 192.168.1.100 -p 16370 -a dongdong info replication

Warning: Using a password with '-a' or '-u' option on the command line interface may not be safe.

# Replication

role:master

connected_slaves:1

slave0:ip=192.168.1.100,port=16371,state=online,offset=10731,lag=0

master_failover_state:no-failover

master_replid:a292603e2c96a6f451055e6d84a60795f81f2928

master_replid2:0000000000000000000000000000000000000000

master_repl_offset:10731

second_repl_offset:-1

repl_backlog_active:1

repl_backlog_size:1048576

repl_backlog_first_byte_offset:1

repl_backlog_histlen:10731

# 只剩下一個(gè) 從節(jié)點(diǎn)了

# 把192.168.1.100:16372 添加回來(lái)

redis-cli -h 192.168.1.100 -p 16372 -a dongdong slaveof 192.168.1.100 16370

[root@master-slave ~]# redis-cli -h 192.168.1.100 -p 16372 -a dongdong slaveof 192.168.1.100 16370

Warning: Using a password with '-a' or '-u' option on the command line interface may not be safe.

OK

# 此時(shí)再看192.168.1.100:16370 查看主從信息

redis-cli -h 192.168.1.100 -p 16370 -a dongdong info replication

[root@master-slave ~]# redis-cli -h 192.168.1.100 -p 16370 -a dongdong info replication

Warning: Using a password with '-a' or '-u' option on the command line interface may not be safe.

# Replication

role:master

connected_slaves:2

slave0:ip=192.168.1.100,port=16371,state=online,offset=10941,lag=0

slave1:ip=192.168.1.100,port=16372,state=online,offset=10941,lag=0

master_failover_state:no-failover

master_replid:a292603e2c96a6f451055e6d84a60795f81f2928

master_replid2:0000000000000000000000000000000000000000

master_repl_offset:10941

second_repl_offset:-1

repl_backlog_active:1

repl_backlog_size:1048576

repl_backlog_first_byte_offset:1

repl_backlog_histlen:10941

# slaves 變成2了

二. 跨節(jié)點(diǎn)部署Redis主從

1. 環(huán)境介紹

操作系統(tǒng)Centos 7Centos 7Centos 7內(nèi)核版本Linux 3.10.0-957.el7.x86_64Linux 3.10.0-957.el7.x86_64Linux 3.10.0-957.el7.x86_64主機(jī)名稱(chēng)masterslave1slave2IP192.168.1.100192.168.1.200192.168.1.250端口163801638116382

2. 修改配置文件

2.1 master

# 創(chuàng)建redis數(shù)據(jù)存儲(chǔ)目錄

mkdir -p /usr/local/redis/data/16380

# 創(chuàng)建redis配置文件存儲(chǔ)目錄

mkdir -p /usr/local/redis/conf/16380

# 創(chuàng)建redis日志存儲(chǔ)目錄

mkdir -p /usr/local/redis/log/16380

# 創(chuàng)建redis pid存儲(chǔ)目錄

mkdir /usr/local/redis/run

# 復(fù)制下面命令即可

cat > /usr/local/redis/conf/redis_16380.conf<

# 開(kāi)啟保護(hù)模式

protected-mode yes

# 添加本機(jī)的ip

bind 192.168.1.100

# 端口　　

port 16380

# pid存儲(chǔ)目錄

pidfile /usr/local/redis/run/redis_16380.pid

# 日志存儲(chǔ)目錄

logfile /usr/local/redis/log/redis_16380.log

# 數(shù)據(jù)存儲(chǔ)目錄，目錄要提前創(chuàng)建好

dir /usr/local/redis/data/16380

# 設(shè)置實(shí)例的驗(yàn)證口令

requirepass dongdong

# 以認(rèn)證的方式連接到master。 如果master中使用了“密碼保護(hù)”，slave必須交付正確的授權(quán)密碼，才能連接成功。

# 此配置項(xiàng)中值需要和master機(jī)器的“requirepass”保持一致

masterauth dongdong

# 配置RDB持久化策略

save 900 1

save 300 10

save 60 10000

# 配置AOF持久化

appendonly yes

appendfsync everysec

# 守護(hù)進(jìn)程

daemonize yes

EOF

2.2 slave 1

# 創(chuàng)建redis數(shù)據(jù)存儲(chǔ)目錄

mkdir -p /usr/local/redis/data/16381

# 創(chuàng)建redis配置文件存儲(chǔ)目錄

mkdir -p /usr/local/redis/conf/16381

# 創(chuàng)建redis日志存儲(chǔ)目錄

mkdir -p /usr/local/redis/log/16381

# 創(chuàng)建redis pid存儲(chǔ)目錄

mkdir /usr/local/redis/run

# 復(fù)制下面命令即可

cat > /usr/local/redis/conf/redis_16381.conf <

# 開(kāi)啟保護(hù)模式

protected-mode yes

# 添加本機(jī)的ip

bind 192.168.1.200

# 端口　　

port 16381

# pid存儲(chǔ)目錄

pidfile /usr/local/redis/run/redis_16381.pid

# 日志存儲(chǔ)目錄

logfile /usr/local/redis/log/redis_16381.log

# 數(shù)據(jù)存儲(chǔ)目錄，目錄要提前創(chuàng)建好

dir /usr/local/redis/data/16381

# 設(shè)置實(shí)例的驗(yàn)證口令

requirepass dongdong

# 以認(rèn)證的方式連接到master。 如果master中使用了“密碼保護(hù)”，slave必須交付正確的授權(quán)密碼，才能連接成功。

# 此配置項(xiàng)中值需要和master機(jī)器的“requirepass”保持一致

masterauth dongdong

# 配置RDB持久化策略

save 900 1

save 300 10

save 60 10000

# 配置AOF持久化

appendonly yes

appendfsync everysec

# 守護(hù)進(jìn)程

daemonize yes

EOF

2.3 slave 2

# 創(chuàng)建redis數(shù)據(jù)存儲(chǔ)目錄

mkdir -p /usr/local/redis/data/16382

# 創(chuàng)建redis配置文件存儲(chǔ)目錄

mkdir -p /usr/local/redis/conf/16382

# 創(chuàng)建redis日志存儲(chǔ)目錄

mkdir -p /usr/local/redis/log/16382

# 創(chuàng)建redis pid存儲(chǔ)目錄

mkdir /usr/local/redis/run

# 復(fù)制下面命令即可

cat > /usr/local/redis/conf/redis_16382.conf <

# 開(kāi)啟保護(hù)模式

protected-mode yes

# 添加本機(jī)的ip

bind 192.168.1.250

# 端口　　

port 16382

# pid存儲(chǔ)目錄

pidfile /usr/local/redis/run/redis_16382.pid

# 日志存儲(chǔ)目錄

logfile /usr/local/redis/log/redis_16382.log

# 數(shù)據(jù)存儲(chǔ)目錄，目錄要提前創(chuàng)建好

dir /usr/local/redis/data/16382

# 設(shè)置實(shí)例的驗(yàn)證口令

requirepass dongdong

# 以認(rèn)證的方式連接到master。 如果master中使用了“密碼保護(hù)”，slave必須交付正確的授權(quán)密碼，才能連接成功。

# 此配置項(xiàng)中值需要和master機(jī)器的“requirepass”保持一致

masterauth dongdong

# 配置RDB持久化策略

save 900 1

save 300 10

save 60 10000

# 配置AOF持久化

appendonly yes

appendfsync everysec

# 守護(hù)進(jìn)程

daemonize yes

EOF

3.啟動(dòng)Redis

3.1 master

redis-server /usr/local/redis/conf/redis_16380.conf

3.2 slave 1

redis-server /usr/local/redis/conf/redis_16381.conf

3.3 slave 2

redis-server /usr/local/redis/conf/redis_16382.conf

4. 開(kāi)啟主從

4.1 slave 1

# 從庫(kù)開(kāi)啟主從

redis-cli -h 192.168.1.200 -p 16381 -a dongdong slaveof 192.168.1.100 16380

[root@slave1 ~]# redis-cli -h 192.168.1.200 -p 16381 -a dongdong slaveof 192.168.1.100 16380

Warning: Using a password with '-a' or '-u' option on the command line interface may not be safe.

OK

# 從庫(kù)查看主從信息

redis-cli -h 192.168.1.200 -p 16381 -a dongdong info replication

[root@slave1 ~]# redis-cli -h 192.168.1.200 -p 16381 -a dongdong info replication

Warning: Using a password with '-a' or '-u' option on the command line interface may not be safe.

# Replication

role:slave

master_host:192.168.1.100

master_port:16380

master_link_status:up

master_last_io_seconds_ago:3

master_sync_in_progress:0

slave_read_repl_offset:532

slave_repl_offset:532

slave_priority:100

slave_read_only:1

replica_announced:1

connected_slaves:0

master_failover_state:no-failover

master_replid:7330881025ee2709ee6c9c32ea3fcc9b6649893d

master_replid2:0000000000000000000000000000000000000000

master_repl_offset:532

second_repl_offset:-1

repl_backlog_active:1

repl_backlog_size:1048576

repl_backlog_first_byte_offset:15

repl_backlog_histlen:518

4.2 slave 2

# 從庫(kù)開(kāi)啟主從

redis-cli -h 192.168.1.250 -p 16382 -a dongdong slaveof 192.168.1.100 16380

[root@slave2 ~]# redis-cli -h 192.168.1.250 -p 16382 -a dongdong slaveof 192.168.1.100 16380

Warning: Using a password with '-a' or '-u' option on the command line interface may not be safe.

OK

# 從庫(kù)查看主從信息

redis-cli -h 192.168.1.250 -p 16382 -a dongdong info replication

[root@slave2 ~]# redis-cli -h 192.168.1.250 -p 16382 -a dongdong info replication

Warning: Using a password with '-a' or '-u' option on the command line interface may not be safe.

# Replication

role:slave

master_host:192.168.1.100

master_port:16380

master_link_status:up

master_last_io_seconds_ago:10

master_sync_in_progress:0

slave_read_repl_offset:560

slave_repl_offset:560

slave_priority:100

slave_read_only:1

replica_announced:1

connected_slaves:0

master_failover_state:no-failover

master_replid:7330881025ee2709ee6c9c32ea3fcc9b6649893d

master_replid2:0000000000000000000000000000000000000000

master_repl_offset:560

second_repl_offset:-1

repl_backlog_active:1

repl_backlog_size:1048576

repl_backlog_first_byte_offset:211

repl_backlog_histlen:350

4.3 master

# 查看 主從信息

redis-cli -h 192.168.1.100 -p 16380 -a dongdong info replication

[root@master ~]# redis-cli -h 192.168.1.100 -p 16380 -a dongdong info replication

Warning: Using a password with '-a' or '-u' option on the command line interface may not be safe.

# Replication

role:master

connected_slaves:2

slave0:ip=192.168.1.200,port=16381,state=online,offset=336,lag=0

slave1:ip=192.168.1.250,port=16382,state=online,offset=336,lag=1

master_failover_state:no-failover

master_replid:7330881025ee2709ee6c9c32ea3fcc9b6649893d

master_replid2:0000000000000000000000000000000000000000

master_repl_offset:336

second_repl_offset:-1

repl_backlog_active:1

repl_backlog_size:1048576

repl_backlog_first_byte_offset:1

repl_backlog_histlen:336

5. 驗(yàn)證主從配置是否生效

# "master主機(jī)名"實(shí)例主庫(kù)的11號(hào)數(shù)據(jù)庫(kù)創(chuàng)建測(cè)試數(shù)據(jù)

redis-cli -h 192.168.1.100 -p 16380 -a dongdong -n 11

[root@master ~]# redis-cli -h 192.168.1.100 -p 16380 -a dongdong -n 11

Warning: Using a password with '-a' or '-u' option on the command line interface may not be safe.

192.168.1.100:16380[11]> keys *

(empty array)

192.168.1.100:16380[11]> set name dongdong

OK

192.168.1.100:16380[11]> set age 18

OK

192.168.1.100:16380[11]> keys *

1) "name"

2) "age"

192.168.1.100:16380[11]>

# "slave1主機(jī)名"實(shí)例從庫(kù)的11號(hào)數(shù)據(jù)庫(kù)查看是否同步主庫(kù)的11號(hào)數(shù)據(jù)庫(kù)

redis-cli -h 192.168.1.200 -p 16381 -a dongdong -n 11

[root@slave1 ~]# redis-cli -h 192.168.1.200 -p 16381 -a dongdong -n 11

Warning: Using a password with '-a' or '-u' option on the command line interface may not be safe.

192.168.1.200:16381[11]> get name

"dongdong"

192.168.1.200:16381[11]> get age

"18"

192.168.1.200:16381[11]> key *

(error) ERR unknown command 'key', with args beginning with: '*'

192.168.1.200:16381[11]> keys *

1) "age"

2) "name"

192.168.1.200:16381[11]>

# "slave2主機(jī)名"實(shí)例從庫(kù)的11號(hào)數(shù)據(jù)庫(kù)查看是否同步主庫(kù)的11號(hào)數(shù)據(jù)庫(kù)

redis-cli -h 192.168.1.250 -p 16382 -a dongdong -n 11

[root@slave2 ~]# redis-cli -h 192.168.1.250 -p 16382 -a dongdong -n 11

Warning: Using a password with '-a' or '-u' option on the command line interface may not be safe.

192.168.1.250:16382[11]> get name

"dongdong"

192.168.1.250:16382[11]> get age

"18"

192.168.1.250:16382[11]> keys *

1) "age"

2) "name"

192.168.1.250:16382[11]>

# 如果針對(duì) slave1 或者 slave2 進(jìn)行寫(xiě)入操作 則會(huì)報(bào)錯(cuò) 錯(cuò)誤信息 只能在master操作哦

(error) READONLY You can't write against a read only replica.

柚子快報(bào)激活碼778899分享：緩存 Redis 主從搭建

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