Redis专题(十二)-Redis集群

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发布时间：2019-02-26

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Redis ?????????

1. Redis ????

Redis ??????

Redis ?????????????? Redis ????????????????????????????????????

??????? Redis ????????? PING-PONG ????????????????????????????

???????????????????????cluster-node-timeout?????????????????????????????????

?????????????? Redis ????????? proxy ???????????????

??????Redis ???? 16384 ?????????????????????????????????

??????

? Redis ??????????????

????? key ?? crc16 ????????

????? 16384 ?????????? 0-16383 ?????? ID?

???????????????????????????

2. Redis ??????

????

?????????master????????????????????????????????????????????cluster_state: fail???????

?????????????????????slave??

???????????????????????

??????

???????????????

127.0.0.1:7003> cluster info

?????

cluster_state: okcluster_slots_assigned: 16384cluster_slots_ok: 16384cluster_slots_pfail: 0cluster_slots_fail: 0cluster_known_nodes: 6cluster_size: 3cluster_current_epoch: 6cluster_my_epoch: 3cluster_stats_messages_sent: 926cluster_stats_messages_received: 926

3. ?? Redis ??

????

??????? Ruby ???

?????
```
yum install rubyyum install rubygems
```

?????? Redis-3.0.0.gem???????????
```
gem install /usr/local/redis-3.0.0.gem
```

??????????????? /usr/local/redis/redis-cluster ???

??????

???????

[root@A001 redis-cluster]# cp 7001/ 7002 -r[root@A001 redis-cluster]# cp 7001/ 7003 -r[root@A001 redis-cluster]# cp 7001/ 7004 -r[root@A001 redis-cluster]# cp 7001/ 7005 -r[root@A001 redis-cluster]# cp 7001/ 7006 -r

???????

?? Redis ??????????????

?????

[root@A001 redis-cluster]# ./startall.sh

?????

[root@A001 redis-cluster]# ./redis-trib.rb create --replicas 1 192.168.242.137:7001 192.168.242.137:7002 192.168.242.137:7003 192.168.242.137:7004 192.168.242.137:7005 192.168.242.137:7006

4. ????

????

??????

./redis-trib.rb add-node 127.0.0.1:7007 127.0.0.1:7001

???????
```
127.0.0.1:7003> cluster nodes
```

??????

./redis-trib.rb add-node --slave --master-id 
     
       192.168.101.3:7008 192.168.101.3:7001

###????

????????
```
127.0.0.1:7003> cluster slots
```

????

./redis-trib.rb reshard 192.168.101.3:7001 500 15b809eadae88955e36bcdbb8144f61bbbaf38fb all yes

5. ?????

?????

?????
```
./redis-cli -h 127.0.0.1 -p 7001 -c
```

???????
```
./redis-cli -h 127.0.0.1 -p 7001 -c
```

????

???????
```
127.0.0.1:7003> cluster info
```

???????
```
127.0.0.1:7003> cluster nodes
```

6. ?????

????

?????

./redis-trib.rb del-node 127.0.0.1:7005 4b45eb75c8b428fbd77ab979b85080146a9bc017

????????????????????????

?????????????? Redis ??????????????????????????

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