搭建redis集羣環境

搭建redis集羣環境

僞集羣，單機上搭建，沒多的機器

說明

Redis3.0版本以後支持Cluster
 當前版本3.2.8
 redis集羣搭建最少6個節點其中3個主節點

修改配置

接上文redis環境搭建
redis1配置
打開集羣配置
port 7001
cluster-enabled yes
cluster-config-file nodes-7001.conf
cluster-node-timeout 5000
redis2配置
port 7002
cluster-enabled yes
cluster-config-file nodes-7002.conf
cluster-node-timeout 5000
redis3配置
port 7003
cluster-enabled yes
cluster-config-file nodes-7003.conf
cluster-node-timeout 5000

啓動redis

cd redis1
./redis-server redis.conf
cd redis2
./redis-server redis.conf
cd redis3
./redis-server redis.conf

查看服務是否正常

ps -ef|grep redis 查看redis進程

建立集羣

官方有提供工具redis-trib.rb，採用ruby編寫，so安裝ruby

安裝ruby

yum -y install ruby ruby-devel rubygems rpm-build

經過ruby命令工具安裝redis

gem install redis

經過redis-trib.rb 建立集羣

查看命令參數

[root@vultr src]# ./redis-trib.rb 
Usage: redis-trib <command> <options> <arguments ...>

  set-timeout     host:port milliseconds
  reshard         host:port
                  --pipeline <arg>
                  --to <arg>
                  --yes
                  --slots <arg>
                  --from <arg>
                  --timeout <arg>
  del-node        host:port node_id
  add-node        new_host:new_port existing_host:existing_port
                  --slave
                  --master-id <arg>
  fix             host:port
                  --timeout <arg>
  help            (show this help)
  rebalance       host:port
                  --pipeline <arg>
                  --simulate
                  --auto-weights
                  --use-empty-masters
                  --weight <arg>
                  --timeout <arg>
                  --threshold <arg>
  check           host:port
  info            host:port
  create          host1:port1 ... hostN:portN
                  --replicas <arg>
  import          host:port
                  --replace
                  --copy
                  --from <arg>
  call            host:port command arg arg .. arg
For check, fix, reshard, del-node, set-timeout you can specify the host and port of any working node in the cluster.

建立集羣，出錯

./redis-trib.rb  create  --replicas  1  127.0.0.1:7001 127.0.0.1:7002  127.0.0.1:7003 

*** ERROR: Invalid configuration for cluster creation.
*** Redis Cluster requires at least 3 master nodes.
*** This is not possible with 3 nodes and 1 replicas per node.
*** At least 6 nodes are required.

至少須要6個節點

開始建立節點

從新建立redis集羣

測試

1.經過redis-cli連接redis redis-cli -c -p 7001
[root@vultr bin]# redis-cli -c -p 7001
127.0.0.1:7001> set name kite
-> Redirected to slot [5798] located at 127.0.0.1:7002
OK
127.0.0.1:7002> get name
"kite"
127.0.0.1:7002> exit
[root@vultr bin]# redis-cli -c -p 7003
127.0.0.1:7003> get name
-> Redirected to slot [5798] located at 127.0.0.1:7002
"kite"
127.0.0.1:7002> 

已經進行同步

參考

Redis 3.2.1集羣搭建