The concept and understanding: Redis (1.7) Redis high availability architecture (theory section)
[0] test environment
Structure is as follows:
(Tested here is not so much a machine, build a test on three machines)
redis1 is a redis cluster node A, above redis running two instances, 70017004
Node B is a redis redis2 cluster, running above two redis example, 70027005
C is a redis redis3 node cluster, the above two running redis example, 70037006
- Test cluster includes A / B / C A1 / B1 / C1 6 nodes
A, B, C corresponding to the primary node Redis instance: 700170027003
A1, A2, A3 master node from the library, the corresponding Redis instance: 700470057006
- cross-built from the master node, a correspondence relationship
【A > B】 【B>C】 【C>A1】
A：192.168.135.173
B：192.168.135.174
C：192.168.135.175
- IP and port distribution:
cluster1：
Main: 192.168.135.173 7001 /data/redis/redis-cluster/nodes-7001/redis.conf
Preparation: 192.168.135.174 7005 /data/redis/redis-cluster/nodes-7005/redis.conf
cluster2：
Main: 192.168.135.174 7002 /data/redis/redis-cluster/nodes-7002/redis.conf
Preparation: 192.168.135.175 7006 /data/redis/redis-cluster/nodes-7006/redis.conf
cluster3：
Main: 192.168.135.175 7003 /data/redis/redis-cluster/nodes-7003/redis.conf
Preparation: 192.168.135.175 7004 /data/redis/redis-cluster/nodes-7004/redis.conf
- external connection policy
Outer end may use F5, keepalived + haproyx result, achieve load balancing 2 (3 write master reads three prepared)