Redis如何添加服務(wù)器 master slave

步驟

步驟一：部署新redis服務(wù)器 ip為192.168.4.58

1）裝包角寸，初始化租漂，啟用集群功能窃肠，重啟服務(wù)

]#yum -y? install gcc

]#tar -zxvf redis-4.0.8.tar.gz

]#cd redis-4.0.8/

]#make

]#make install

]#./utils/install_server.sh

]# /etc/init.d/redis_6379? stop

vim /etc/redis/6379.conf

? ? ? ? bind 192.168.4.58

? ? ? ? port 6358

? ? ? ? cluster-enabled? yes? //啟用集群

? ? ? ? cluster-config-file? nodes-6379.conf? ? ? //存儲集群信息文件

? ? ? ? cluster-node-timeout? 5000

:wq

]# vim +43 /etc/init.d/redis_6379

? ? ? ? $CLIEXEC -h 192.168.4.58 -p 6358 shutdown

:wq

]# /etc/init.d/redis_6379? start

]# netstat -utnlp? | grep redis-server

tcp? 0? 0 192.168.4.58:6358? 0.0.0.0:*? LISTEN? ? ? 21201/redis-server?

tcp? 0? 0 192.168.4.58:16358? 0.0.0.0:*? LISTEN? 21201/redis-server?

步驟二：添加master角色主機到集群里

1）在管理主機，添加master角色主機

[root@mgm57 ~]# redis-trib.rb? add-node? 192.168.4.58:6358? 192.168.4.53:6353? //執(zhí)行添加命令

>>> Adding node 192.168.4.58:6358 to cluster 192.168.4.53:6353

...

[OK] New node added correctly. //提示添加完成

2）在管理主機灌具，查看集群新消息

[root@mgm57 ~]# redis-trib.rb info 192.168.4.53:6353? //查看集群信息

...

192.168.4.58:6358 (4fe1fa46...) -> 0 keys | 0 slots | 0 slaves. //主服務(wù)器58

...

3）在管理主機茂卦，檢測集群

[root@mgm57 ~]# redis-trib.rb check 192.168.4.53:6353? ? //檢測集群

>>> Performing Cluster Check (using node 192.168.4.53:6353)

...

M: 4fe1fa467ad237802021f5aac5f1d5b3e0db47ef 192.168.4.58:6358

? slots: (0 slots) master? //master服務(wù)器58 何什，沒有hash槽

? 0 additional replica(s)

S: d9f8fe6d6d9dd391be8e7904501db1535e4d17cb 192.168.4.51:6351

...

[OK] All 16384 slots covered.

4）在管理主機，重新分配hash槽

[root@mgm57 ~]# redis-trib.rb? reshard? 192.168.4.53:6353?

How many slots do you want to move (from 1 to 16384)?4096? //拿出4096個hash 槽給主機192.168.4.58

What is the receiving node ID?? c5e0da48f335c46a2ec199faa99b830f537dd8a0? //主機192.168.4.58的id值

Source node #1:all? ? ? //從當前所有master服務(wù)器獲取hash槽

Do you want to proceed with the proposed reshard plan (yes/no)?yes //同意以上配置

...

Moving slot 12283 from 192.168.4.53:6353 to 192.168.4.58:6358:

Moving slot 12284 from 192.168.4.53:6353 to 192.168.4.58:6358:

Moving slot 12285 from 192.168.4.53:6353 to 192.168.4.58:6358:

Moving slot 12286 from 192.168.4.53:6353 to 192.168.4.58:6358:

Moving slot 12287 from 192.168.4.53:6353 to 192.168.4.58:6358:

5）在管理主機等龙，查看集群信息

[root@mgm57 ~]# redis-trib.rb info 192.168.4.53:6353

192.168.4.53:6353 (9e44139c...) -> 2 keys | 4096 slots | 1 slaves.

192.168.4.52:6352 (324e05df...) -> 1 keys | 4096 slots | 1 slaves.

192.168.4.58:6358 (4fe1fa46...) -> 4 keys | 4096 slots | 0 slaves. //hash槽4096個

192.168.4.55:6355 (2d343a9d...) -> 1 keys | 4096 slots | 1 slaves.

[OK] 8 keys in 4 masters.

0.00 keys per slot on average.

步驟三：添加slave角色主機到集群里

1）部署新的redis服務(wù)器 192.168.4.59

]#yum -y? install gcc

]#tar -zxvf redis-4.0.8.tar.gz

]#cd redis-4.0.8/

]#make

]#make install

]#./utils/install_server.sh

]# /etc/init.d/redis_6379? stop

vim /etc/redis/6379.conf

? ? ? ? bind 192.168.4.59

? ? ? ? port 6359

? ? ? ? cluster-enabled? yes? ? ? ? ? ? ? ? ? ? ? ? //啟用集群

? ? ? ? cluster-config-file? nodes-6379.conf? ? ? //存儲集群信息文件

? ? ? ? cluster-node-timeout? 5000

:wq

]# vim +43 /etc/init.d/redis_6379

? ? ? ? $CLIEXEC -h 192.168.4.59 -p 6359 shutdown

:wq

]# /etc/init.d/redis_6379? start

]# netstat -utnlp? | grep redis-server

tcp? 0? 0 192.168.4.59:6359? 0.0.0.0:*? LISTEN? ? ? 21201/redis-server?

tcp? 0? 0 192.168.4.59:16359? 0.0.0.0:*? LISTEN? 21201/redis-server?

2）在管理主機处渣，添加slave角色主機

[root@mgm57 ~]# redis-trib.rb add-node? --slave 192.168.4.59:6359? 192.168.4.51:6351? //執(zhí)行添加命令

>>> Adding node 192.168.4.59:6359 to cluster 192.168.4.51:6351

>>> Performing Cluster Check (using node 192.168.4.51:6351)

...

>>> Configure node as replica of 192.168.4.58:6358. //提示添加完成

[OK] New node added correctly.

3）在管理主機，查看集群新消息

[root@mgm57 ~]# redis-trib.rb? info? 192.168.4.51:6351 //查看信息

192.168.4.55:6355 (2d343a9d...) -> 3 keys | 4096 slots | 1 slaves.

192.168.4.53:6353 (9e44139c...) -> 3 keys | 4096 slots | 1 slaves.

192.168.4.52:6352 (324e05df...) -> 2 keys | 4096 slots | 1 slaves.

192.168.4.58:6358 (4fe1fa46...) -> 5 keys | 4096 slots | 1 slaves. //有1個從服務(wù)器

[OK] 13 keys in 4 masters.

0.00 keys per slot on average.

[root@mgm57 ~]#

4）在管理主機而咆，檢測集群

[root@mgm57 ~]# redis-trib.rb check 192.168.4.53:6353? ? //檢測集群

[root@mgm57 ~]# redis-trib.rb? check? 192.168.4.51:6351

>>> Performing Cluster Check (using node 192.168.4.51:6351)

...

S: 7f3fa4f20c8c516d5b412ecc22550ed8e7bb8d7a 192.168.4.59:6359 //從服務(wù)器

? slots: (0 slots) slave

? replicates 4fe1fa467ad237802021f5aac5f1d5b3e0db47ef //58主機的id值

...

M: 4fe1fa467ad237802021f5aac5f1d5b3e0db47ef 192.168.4.58:6358 //主服務(wù)器

? slots:0-1364,5461-6826,10923-12287 (4096 slots) master

....

[OK] All 16384 slots covered.

5）在客戶端霍比，訪問從服務(wù)器59，查看數(shù)據(jù)

[root@host50 ~]# redis-cli? -c -h 192.168.4.59 -p 6359

192.168.4.59:6359> keys * //自動同步主服務(wù)器58的數(shù)據(jù)

1) "name"

2) "name2"

3) "age"

4) "y"

5) "shcool5"

192.168.4.59:6359>?