1. 集群配置

• 3主+3從

• 由于僅用于測試，故我這里只用1臺服務(wù)器進(jìn)行模擬

redis列表

2.編寫redis.conf

在server上創(chuàng)建一個目錄用于存放redis集群部署文件。這里我放的路徑為/root/redis-cluster

在/opt/docker/redis-cluster目錄下創(chuàng)建redis-1,redis-2,redis-3,redis-4,redis-5,redis-6文件夾

mkdir -p /opt/docker/redis-cluster/{redis-1,redis-2,redis-3,redis-4,redis-5,redis-6}#創(chuàng)建持久化目錄
mkdir -p /opt/docker/redis-cluster/redis-1/data
mkdir -p /opt/docker/redis-cluster/redis-2/data
mkdir -p /opt/docker/redis-cluster/redis-3/data
mkdir -p /opt/docker/redis-cluster/redis-4/data
mkdir -p /opt/docker/redis-cluster/redis-5/data
mkdir -p /opt/docker/redis-cluster/redis-6/data

3. 在每個redis-*文件夾下創(chuàng)建redis.conf文件，并寫入如下內(nèi)容:

cluster-enabled yes # 開啟集群
cluster-config-file nodes.conf # 集群配置文件
cluster-node-timeout 5000 # 集群節(jié)點多少時間未響應(yīng)視為該節(jié)點丟失
appendonly yes
port 6379 # redis監(jiān)聽端口
masterauth passwd123  #設(shè)置master節(jié)點密碼
requirepass passwd123 #設(shè)置密碼

注意：port值不能都為6379，根據(jù)上面redis列表設(shè)置的端口號，依次給redis-1 ~ redis-6設(shè)置6379~6384端口號

4.編寫docker-compose.yml文件

這里直接使用daocloud提供的redis鏡像地址daocloud.io/library/redis:6.0.4

在/root/redis-cluster文件夾下創(chuàng)建docker-compose.yml文件。

docker-compose.yml文件內(nèi)容如下：

version: '3.1'
services:# redis1配置redis1:image: daocloud.io/library/redis:6.0.4container_name: redis-1restart: alwaysnetwork_mode: "host"volumes:- /opt/docker/redis-cluster/redis-1/data:/data- /opt/docker/redis-cluster/redis-1/redis.conf:/usr/local/etc/redis/redis.confcommand: ["redis-server", "/usr/local/etc/redis/redis.conf"]# redis2配置redis2:image: daocloud.io/library/redis:6.0.4container_name: redis-2restart: alwaysnetwork_mode: "host"volumes:- /opt/docker/redis-cluster/redis-2/data:/data- /opt/docker/redis-cluster/redis-2/redis.conf:/usr/local/etc/redis/redis.confcommand: ["redis-server", "/usr/local/etc/redis/redis.conf"]# redis3配置redis3:image: daocloud.io/library/redis:6.0.4container_name: redis-3restart: alwaysnetwork_mode: "host"volumes:- /opt/docker/redis-cluster/redis-3/data:/data- /opt/docker/redis-cluster/redis-3/redis.conf:/usr/local/etc/redis/redis.confcommand: ["redis-server", "/usr/local/etc/redis/redis.conf"]# redis4配置redis4:image: daocloud.io/library/redis:6.0.4container_name: redis-4restart: alwaysnetwork_mode: "host"volumes:- /opt/docker/redis-cluster/redis-4/data:/data- /opt/docker/redis-cluster/redis-4/redis.conf:/usr/local/etc/redis/redis.confcommand: ["redis-server", "/usr/local/etc/redis/redis.conf"]# redis5配置redis5:image: daocloud.io/library/redis:6.0.4container_name: redis-5restart: alwaysnetwork_mode: "host"volumes:- /opt/docker/redis-cluster/redis-5/data:/data- /opt/docker/redis-cluster/redis-5/redis.conf:/usr/local/etc/redis/redis.confcommand: ["redis-server", "/usr/local/etc/redis/redis.conf"]# redis6配置redis6:image: daocloud.io/library/redis:6.0.4container_name: redis-6restart: alwaysnetwork_mode: "host"volumes:- /opt/docker/redis-cluster/redis-6/data:/data- /opt/docker/redis-cluster/redis-6/redis.conf:/usr/local/etc/redis/redis.confcommand: ["redis-server", "/usr/local/etc/redis/redis.conf"]

啟動容器,執(zhí)行命令:

#啟動容器
docker-compose -f xxx.yaml up -d

5.開啟集群

隨便找一個容器進(jìn)入，這里我選擇redis-1進(jìn)入。 在進(jìn)入容器后，輸入如下命令開啟集群:

redis-cli --cluster create 192.168.66.180:6379 \
192.168.66.180:6380 \
192.168.66.180:6381 \
192.168.66.180:6382 \
192.168.66.180:6383 \
192.168.66.180:6384 \
--cluster-replicas 1

出現(xiàn)下圖即為成功。

6.測試

使用redis-cli命令，連接集群中任意節(jié)點。（隨便找一臺能ping通集群所在IP的電腦，這里我用的本機(jī)進(jìn)行測試）

6.1 查看節(jié)點屬性

redis-cli -c -h 192.168.66.180 -p 6379192.168.66.180:6379> cluster info

顯示為如下圖，即為集群健康狀態(tài)

6.2 查看節(jié)點信息

cluster nodes

注意看圖中的slave,master,myself等關(guān)鍵字。

6.3 插入一個值

192.168.66.180:6379> set test 'hello world'
-> Redirected to slot [6918] located at 192.168.66.180:6380
OK
192.168.66.180:6380> 

注意：這里根據(jù)切片自動切換到了該數(shù)據(jù)分片所在的節(jié)點上，所以下面可以看到連接的節(jié)點變?yōu)榱?92.168.1.4:6380

get test

168.66.180:6379> set test 'hello world'
-> Redirected to slot [6918] located at 192.168.66.180:6380
OK
192.168.66.180:6380> get test
"hello world"
192.168.66.180:6380> 

這里因為就是在該數(shù)據(jù)所在分片上進(jìn)行的查詢，所以連接節(jié)點沒有改變。

7.添加密碼：

7.1 編輯redis.conf文件

#為redis.conf文件添加如下配置。這里設(shè)置密碼為123456
masterauth 123456
requirepass 123456

7.2 編輯docker-compose.yml文件

#為docker-compose.yml中每個容器添加如下配置:
environment:- REDISCLI_AUTH=123456

7.3 連接集群

redis-cli -c -h 192.168.66.180 -p 6379 -a 123456