四、实战：部署Redis集群

实战：部署Redis集群

1.创建网卡

[root@docker ~]# docker network create redis --subnet 192.168.2.0/24 --gateway 192.168.2.1

97304262c0e2e2a98f9635e60fb5d80e2c9c73aaae849d4866487e181f917fcf

[root@docker ~]# docker network ls

NETWORK ID          NAME                DRIVER              SCOPE

219769a74201        bridge              bridge              local               

f6b9d84b1f81        host                host                local               

2bb4bf4c0539        mynet               bridge              local               

47132fb890ac        none                null                local               

97304262c0e2        redis               bridge              local

2.通过脚本创建6个redis配置文件

for port  in {1..6}; do

mkdir -p /mydata/redis/node-${port}/conf

touch /mydata/redis/node-${port}/conf/redis.conf

cat >>  /mydata/redis/node-${port}/conf/redis.conf << EOF

port 6379

bind 0.0.0.0

cluster-enabled yes

cluster-config-file nodes.conf

cluster-node-timeout 5000

cluster-announce-ip 192.168.2.1${port}

cluster-announce-port 6379

cluster-announce-bus-port 16379

appendonly yes

EOF

done

3.启动redis容器

容器-1

[root@docker ~]# docker run -p 6371:6379 -p 16371:16379 --name redis-1 -v  /mydata/redis/node-1/data:/data -v  /mydata/redis/node-1/conf/redis.conf:/etc/redis/redis.conf -d --network redis --ip 192.168.2.11 redis:5.0.9-alpine3.11 redis-server /etc/redis/redis.conf

容器-2

[root@docker ~]# docker run -p 6372:6379 -p 16372:16379 --name redis-2 -v  /mydata/redis/node-2/data:/data -v  /mydata/redis/node-2/conf/redis.conf:/etc/redis/redis.conf -d --network redis --ip 192.168.2.12 redis:5.0.9-alpine3.11 redis-server /etc/redis/redis.conf

容器-3

[root@docker ~]# docker run -p 6373:6379 -p 16373:16379 --name redis-3 -v  /mydata/redis/node-3/data:/data -v  /mydata/redis/node-3/conf/redis.conf:/etc/redis/redis.conf -d --network redis --ip 192.168.2.13 redis:5.0.9-alpine3.11 redis-server /etc/redis/redis.conf

容器-4

[root@docker ~]# docker run -p 6374:6379 -p 16374:16379 --name redis-4 -v  /mydata/redis/node-4/data:/data -v  /mydata/redis/node-4/conf/redis.conf:/etc/redis/redis.conf -d --network redis --ip 192.168.2.14 redis:5.0.9-alpine3.11 redis-server /etc/redis/redis.conf

c881a22475f3ca563ed33e46eaad4522e6e7f02581e6dd708bd7ca819fdda23a

容器-5

[root@docker ~]# docker run -p 6375:6379 -p 16375:16379 --name redis-5 -v  /mydata/redis/node-5/data:/data -v  /mydata/redis/node-5/conf/redis.conf:/etc/redis/redis.conf -d --network redis --ip 192.168.2.15 redis:5.0.9-alpine3.11 redis-server /etc/redis/redis.conf

3272fae0293aef7674823375b9f0640d172bbac0054ea26a1d9bc70ba7e52974

容器-6

[root@docker ~]# docker run -p 6376:6379 -p 16376:16379 --name redis-6 -v  /mydata/redis/node-6/data:/data -v  /mydata/redis/node-6/conf/redis.conf:/etc/redis/redis.conf -d --network redis --ip 192.168.2.16 redis:5.0.9-alpine3.11 redis-server /etc/redis/redis.conf

4.创建集群

[root@docker ~]# docker exec -it redis-1 /bin/sh

/data # redis-cli --cluster create 192.168.2.11:6379 192.168.2.12:6379 192.168.2.13:6379 192.168.2.14:6379 192.168.2.15:6379 192.168.2.16:6379 --cluster-replicas  1

/data # redis-cli -c

127.0.0.1:6379> cluster info

cluster_state:ok

cluster_slots_assigned:16384

cluster_slots_ok:16384

cluster_slots_pfail:0

cluster_slots_fail:0

cluster_known_nodes:6

cluster_size:3

cluster_current_epoch:6

cluster_my_epoch:1

cluster_stats_messages_ping_sent:115

cluster_stats_messages_pong_sent:105

cluster_stats_messages_sent:220

cluster_stats_messages_ping_received:100

cluster_stats_messages_pong_received:115

cluster_stats_messages_meet_received:5

cluster_stats_messages_received:220

127.0.0.1:6379> cluster nodes

c9a1d39bc42bdb9a4b69ba21f5e6219249228d7f 192.168.2.11:6379@16379 myself,master - 0 1632712331000 1 connected 0-5460

69e6de33d8109bdd6502ded5236b6934009e86de 192.168.2.13:6379@16379 master - 0 1632712331000 3 connected 10923-16383

fa3e39d75667267f3de00344ed026a068174f70d 192.168.2.16:6379@16379 slave 2deddc69cc4423ee3bb3468282786aada2aaece3 0 1632712332000 6 conn

2deddc69cc4423ee3bb3468282786aada2aaece3 192.168.2.12:6379@16379 master - 0 1632712330235 2 connected 5461-10922

94036c138b2ea711a1e286ee9a5ff24e88267326 192.168.2.14:6379@16379 slave 69e6de33d8109bdd6502ded5236b6934009e86de 0 1632712332250 4 conn

91c7263eebc80758d4a270263ef45a1649b4f5f6 192.168.2.15:6379@16379 slave c9a1d39bc42bdb9a4b69ba21f5e6219249228d7f 0 1632712331242 5 conn

127.0.0.1:6379> set a b

-> Redirected to slot [15495] located at 192.168.2.13:6379

OK

测试高可用：

[root@docker ~]# docker stop redis-3

redis-3

[root@docker ~]# docker exec -it redis-1 /bin/sh

/data # redis-cli -c

127.0.0.1:6379> get a

-> Redirected to slot [15495] located at 192.168.2.14:6379

"b"

192.168.2.14:6379> cluster nodes

94036c138b2ea711a1e286ee9a5ff24e88267326 192.168.2.14:6379@16379 myself,master - 0 1632712512000 7 connected 10923-16383

c9a1d39bc42bdb9a4b69ba21f5e6219249228d7f 192.168.2.11:6379@16379 master - 0 1632712512501 1 connected 0-5460

2deddc69cc4423ee3bb3468282786aada2aaece3 192.168.2.12:6379@16379 master - 0 1632712513709 2 connected 5461-10922

fa3e39d75667267f3de00344ed026a068174f70d 192.168.2.16:6379@16379 slave 2deddc69cc4423ee3bb3468282786aada2aaece3 0 1632712512199 6 connected

69e6de33d8109bdd6502ded5236b6934009e86de 192.168.2.13:6379@16379 master,fail - 1632712430316 1632712428105 3 connected

91c7263eebc80758d4a270263ef45a1649b4f5f6 192.168.2.15:6379@16379 slave c9a1d39bc42bdb9a4b69ba21f5e6219249228d7f 0 1632712513205 1 connected

[root@docker ~]# docker start redis-3

redis-3

[root@docker ~]# docker exec -it redis-1 /bin/sh

/data # redis-cli -c

127.0.0.1:6379> cluster nodes

c9a1d39bc42bdb9a4b69ba21f5e6219249228d7f 192.168.2.11:6379@16379 myself,master - 0 1632712776000 1 connected 0-5460

69e6de33d8109bdd6502ded5236b6934009e86de 192.168.2.13:6379@16379 slave 94036c138b2ea711a1e286ee9a5ff24e88267326 0 1632712776000 7 connected

fa3e39d75667267f3de00344ed026a068174f70d 192.168.2.16:6379@16379 slave 2deddc69cc4423ee3bb3468282786aada2aaece3 0 1632712775599 6 connected

2deddc69cc4423ee3bb3468282786aada2aaece3 192.168.2.12:6379@16379 master - 0 1632712774592 2 connected 5461-10922

94036c138b2ea711a1e286ee9a5ff24e88267326 192.168.2.14:6379@16379 master - 0 1632712776506 7 connected 10923-16383

91c7263eebc80758d4a270263ef45a1649b4f5f6 192.168.2.15:6379@16379 slave c9a1d39bc42bdb9a4b69ba21f5e6219249228d7f 0 1632712776000 5 connected