redis cluster practice
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redis cluster practice
1. create three instance folder: 9001,9002,9003,folder name as redis instance port
2.Store configuration files redis-server,redis.conf to the three folders
3.Change redis.conf file, keep below setting:
daemonize yes
port 9001
cluster-enabled yes
cluster-config-file nodes.conf
cluster-node-timeout 5000
appendonly yes
note: port need to change into folder name
4.start up the three instances:
zhaoguihuadediannao:~ zhaogh$ cd applications/dev/redis-cluster
zhaoguihuadediannao:redis-cluster zhaogh$ cd 9001
zhaoguihuadediannao:9001 zhaogh$ ./redis-server ./redis.conf
zhaoguihuadediannao:9003 zhaogh$ cd ../9002
zhaoguihuadediannao:9002 zhaogh$ ./redis-server ./redis.conf
zhaoguihuadediannao:9002 zhaogh$ cd ../9003
zhaoguihuadediannao:9003 zhaogh$ ./redis-server ./redis.conf
zhaoguihuadediannao:9003 zhaogh$
5.create clusters on the three instances
zhaoguihuadediannao:src zhaogh$ ./redis-trib.rb create --replicas 0 127.0.0.1:9001 127.0.0.1:9002 127.0.0.1:9003
>>> Creating cluster
Connecting to node 127.0.0.1:9001: OK
Connecting to node 127.0.0.1:9002: OK
Connecting to node 127.0.0.1:9003: OK
>>> Performing hash slots allocation on 3 nodes...
Using 3 masters:
127.0.0.1:9001
127.0.0.1:9002
127.0.0.1:9003
M: 92c9912cb1ccf657c886ecd839dd32c66efd8762 127.0.0.1:9001
slots:0-5460 (5461 slots) master
M: b6d46fcb8b0e6ee373b09a4f2cbcec744d1a259b 127.0.0.1:9002
slots:5461-10922 (5462 slots) master
M: 44ab30c7c589ffb15b9b04dd827c72cfaeedacb2 127.0.0.1:9003
slots:10923-16383 (5461 slots) master
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 127.0.0.1:9001)
M: 92c9912cb1ccf657c886ecd839dd32c66efd8762 127.0.0.1:9001
slots:0-5460 (5461 slots) master
M: b6d46fcb8b0e6ee373b09a4f2cbcec744d1a259b 127.0.0.1:9002
slots:5461-10922 (5462 slots) master
M: 44ab30c7c589ffb15b9b04dd827c72cfaeedacb2 127.0.0.1:9003
slots:10923-16383 (5461 slots) master
[OK] All nodes agree about slots configuration.
>>> Check for open slots...
>>> Check slots coverage...
[OK] All 16384 slots covered.
zhaoguihuadediannao:src zhaogh$
6. command redis-trib.rb needs ruby env., may install it fromhttps://rubygems.org/gems/redis
sudo gem install redis-3.0.7.gem --local
7. test in redis client
zhaoguihuadediannao:src zhaogh$ ./redis-cli -c -p 9001
127.0.0.1:9001> get testkey001
-> Redirected to slot [12786] located at 127.0.0.1:9003
(nil)
127.0.0.1:9003> set testkey002 testvalue002
-> Redirected to slot [401] located at 127.0.0.1:9001
OK
127.0.0.1:9001> get testkey002
"testvalue002"
127.0.0.1:9001> set testkey003 testvalue003
OK
127.0.0.1:9001>
8. even connect9001 port, whenretrievetestkey001,redis cluster will auto redirect to port9003 .
When set9003 withtestkey002,redis cluster auto redirect to 9001
source:http://www.cnblogs.com/zhaoguihua/p/redis-005.html
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