Docker部署Redis集群
第一步创建Redis网卡
docker network create redis --subnet 192.168.1.0/24
通过脚本创建6个Redis配置
for port in $(seq 1 6); \
do \
mkdir -p /mydata/redis/node-${port}/conf
touch /mydata/redis/node-${port}/conf/redis.conf
cat << EOF >>/mydata/redis/node-${port}/conf/redis.conf
port 6379
bind 0.0.0.0
cluster-enabled yes
cluster-config-file nodes.conf
cluster-node-timeout 5000
cluster-announce-ip 192.168.1.1${port}
cluster-announce-port 6379
cluster-announce-bus-port 16379
appendonly yes
EOF
done
创建完毕后检查是否成功
[root@D mydata]# cd /mydata/
[root@D mydata]# ls
redis
[root@D mydata]# cd redis/
[root@D redis]# ls
node-1 node-2 node-3 node-4 node-5 node-6
[root@D redis]# cd node-1
[root@D node-1]# ls
conf
[root@D node-1]# cd conf/
[root@D conf]# ls
redis.conf
[root@D conf]# cat redis.conf
port 6379
bind 0.0.0.0
cluster-enabled yes
cluster-config-file nodes.conf
cluster-node-timeout 5000
cluster-announce-ip 192.168.1.11
cluster-announce-port 6379
cluster-announce-bus-port 16379
appendonly yes
[root@D conf]# docker run -p 637${port}:6379 -p 1637${port}:16379 --name redis-${port} \
-v /mydata/redis/node-${port}/data:/data \
-v /mydata/redis/node-${port}/conf/redis.conf:/etc/redis/redis.conf \
-d --net redis --ip 192.168.1.1${port} redis:5.0 redis-server /etc/redis/redis.conf
创建六台redis
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 --net redis --ip 192.168.1.11 redis:5.0 redis-server /etc/redis/redis.conf 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 --net redis --ip 192.168.1.12 redis:5.0 redis-server /etc/redis/redis.conf 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 --net redis --ip 192.168.1.13 redis:5.0 redis-server /etc/redis/redis.conf 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 --net redis --ip 192.168.1.14 redis:5.0 redis-server /etc/redis/redis.conf 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 --net redis --ip 192.168.1.15 redis:5.0 redis-server /etc/redis/redis.conf 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 --net redis --ip 192.168.1.16 redis:5.0 redis-server /etc/redis/redis.conf
然后进入redis创建集群
docker exec -it redis-1 /bin/sh redis-cli --cluster create 192.168.1.11:6379 192.168.1.12:6379 192.168.1.13:6379 192.168.1.14:6379 192.168.1.15:6379 192.168.1.16:6379 --cluster-replicas 1 # redis-cli --cluster create 192.168.1.11:6379 192.168.1.12:6379 192.168.1.13:6379 192.168.1.14:6379 192.168.1.15:6379 192.168.1.16:6379 --cluster-replicas 1
>>> Performing hash slots allocation on 6 nodes...
Master[0] -> Slots 0 - 5460
Master[1] -> Slots 5461 - 10922
Master[2] -> Slots 10923 - 16383
Adding replica 192.168.1.15:6379 to 192.168.1.11:6379
Adding replica 192.168.1.16:6379 to 192.168.1.12:6379
Adding replica 192.168.1.14:6379 to 192.168.1.13:6379
M: a7f6ab5c0d726d45099b63593b12676172b3f86b 192.168.1.11:6379
slots:[0-5460] (5461 slots) master
M: 38d476004e54dcb651471fb46f40567f0ee72c89 192.168.1.12:6379
slots:[5461-10922] (5462 slots) master
M: 4a260ed09fdc1eaee4896c6acf8185a5ff408faa 192.168.1.13:6379
slots:[10923-16383] (5461 slots) master
S: 7cc614aa214debdef74984e5e42becfbc60f4885 192.168.1.14:6379
replicates 4a260ed09fdc1eaee4896c6acf8185a5ff408faa
S: b2ec6c8a0ba9c7e8a2773d8f50fd99ef2d6a1de7 192.168.1.15:6379
replicates a7f6ab5c0d726d45099b63593b12676172b3f86b
S: 08accdc50545573fd75262bf1d304a0056fd2c6d 192.168.1.16:6379
replicates 38d476004e54dcb651471fb46f40567f0ee72c89
Can I set the above configuration? (type 'yes' to accept): yes
>>> Nodes configuration updated
>>> Assign a different config epoch to each node
>>> Sending CLUSTER MEET messages to join the cluster
Waiting for the cluster to join
.
>>> Performing Cluster Check (using node 192.168.1.11:6379)
M: a7f6ab5c0d726d45099b63593b12676172b3f86b 192.168.1.11:6379
slots:[0-5460] (5461 slots) master
1 additional replica(s)
M: 38d476004e54dcb651471fb46f40567f0ee72c89 192.168.1.12:6379
slots:[5461-10922] (5462 slots) master
1 additional replica(s)
S: b2ec6c8a0ba9c7e8a2773d8f50fd99ef2d6a1de7 192.168.1.15:6379
slots: (0 slots) slave
replicates a7f6ab5c0d726d45099b63593b12676172b3f86b
M: 4a260ed09fdc1eaee4896c6acf8185a5ff408faa 192.168.1.13:6379
slots:[10923-16383] (5461 slots) master
1 additional replica(s)
S: 7cc614aa214debdef74984e5e42becfbc60f4885 192.168.1.14:6379
slots: (0 slots) slave
replicates 4a260ed09fdc1eaee4896c6acf8185a5ff408faa
S: 08accdc50545573fd75262bf1d304a0056fd2c6d 192.168.1.16:6379
slots: (0 slots) slave
replicates 38d476004e54dcb651471fb46f40567f0ee72c89
[OK] All nodes agree about slots configuration.
>>> Check for open slots...
>>> Check slots coverage...
[OK] All 16384 slots covered.
# # 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:167
cluster_stats_messages_pong_sent:187
cluster_stats_messages_sent:354
cluster_stats_messages_ping_received:182
cluster_stats_messages_pong_received:167
cluster_stats_messages_meet_received:5
cluster_stats_messages_received:354
127.0.0.1:6379> cluster nodes
38d476004e54dcb651471fb46f40567f0ee72c89 192.168.1.12:6379@16379 master - 0 1647498718381 2 connected 5461-10922
a7f6ab5c0d726d45099b63593b12676172b3f86b 192.168.1.11:6379@16379 myself,master - 0 1647498716000 1 connected 0-5460
b2ec6c8a0ba9c7e8a2773d8f50fd99ef2d6a1de7 192.168.1.15:6379@16379 slave a7f6ab5c0d726d45099b63593b12676172b3f86b 0 1647498717378 5 connected
4a260ed09fdc1eaee4896c6acf8185a5ff408faa 192.168.1.13:6379@16379 master - 0 1647498718080 3 connected 10923-16383
7cc614aa214debdef74984e5e42becfbc60f4885 192.168.1.14:6379@16379 slave 4a260ed09fdc1eaee4896c6acf8185a5ff408faa 0 1647498718000 4 connected
08accdc50545573fd75262bf1d304a0056fd2c6d 192.168.1.16:6379@16379 slave 38d476004e54dcb651471fb46f40567f0ee72c89 0 1647498717879 6 connected
127.0.0.1:6379> set a b
-> Redirected to slot [15495] located at 192.168.1.13:6379
OK
127.0.0.1:6379> get a
-> Redirected to slot [15495] located at 192.168.1.14:6379
"b"
192.168.1.14:6379> get a b
(error) ERR wrong number of arguments for 'get' command
192.168.1.14:6379> get b
-> Redirected to slot [3300] located at 192.168.1.11:6379
(nil)
192.168.1.11:6379> get a
-> Redirected to slot [15495] located at 192.168.1.14:6379
"b"
192.168.1.14:6379> cluster nodes
38d476004e54dcb651471fb46f40567f0ee72c89 192.168.1.12:6379@16379 master - 0 1647499631792 2 connected 5461-10922
7cc614aa214debdef74984e5e42becfbc60f4885 192.168.1.14:6379@16379 myself,master - 0 1647499631000 7 connected 10923-16383
4a260ed09fdc1eaee4896c6acf8185a5ff408faa 192.168.1.13:6379@16379 master,fail - 1647498826767 1647498825665 3 connected
b2ec6c8a0ba9c7e8a2773d8f50fd99ef2d6a1de7 192.168.1.15:6379@16379 slave a7f6ab5c0d726d45099b63593b12676172b3f86b 0 1647499630000 5 connected
a7f6ab5c0d726d45099b63593b12676172b3f86b 192.168.1.11:6379@16379 master - 0 1647499631000 1 connected 0-5460
08accdc50545573fd75262bf1d304a0056fd2c6d 192.168.1.16:6379@16379 slave 38d476004e54dcb651471fb46f40567f0ee72c89 0 1647499631592 6 connected
192.168.1.14:6379>
