Redis集群擴(kuò)容的實(shí)現(xiàn)示例
更新時(shí)間：2025年02月27日 11:32:58 作者：元?dú)鉂M滿的熱碼式
本文介紹了在虛擬機(jī)上新建Redis集群,并將新增節(jié)點(diǎn)加入現(xiàn)有集群,通過配置文件和`redis-cli`命令,成功實(shí)現(xiàn)了Redis集群的擴(kuò)容,感興趣的可以了解一下
在虛擬機(jī)上新建兩個(gè)6387，6388服務(wù)配置文件，新建之后啟動(dòng)
[root@redis-cluster1 cluster]# cat redisCluster6387.conf bind 0.0.0.0 daemonize yes protected-mode no logfile "/myredis/cluster/cluster6387.log" pidfile /myredis/cluster6387.pid dir /myredis/cluster dbfilename dump6387.rdb appendonly yes appendfilename "appendonly6387.aof" requirepass 111111 masterauth 111111 port 6387 cluster-enabled yes cluster-config-file nodes-6387.conf cluster-node-timeout 5000 [root@redis-cluster1 cluster]# cat redisCluster6388.conf bind 0.0.0.0 daemonize yes protected-mode no logfile "/myredis/cluster/cluster6388.log" pidfile /myredis/cluster6388.pid dir /myredis/cluster dbfilename dump6388.rdb appendonly yes appendfilename "appendonly6388.aof" requirepass 111111 masterauth 111111 port 6388 cluster-enabled yes cluster-config-file nodes-6388.conf cluster-node-timeout 5000
啟動(dòng)87，88兩個(gè)服務(wù)，此時(shí)他們都是master，沒有加入集群
[root@redis-cluster1 cluster]# redis-server redisCluster6387.conf [root@redis-cluster1 cluster]# redis-server redisCluster6388.conf [root@redis-cluster1 cluster]# ps -ef | grep redis root 2038 1 0 15:31 ? 00:00:31 redis-server 0.0.0.0:6386 [cluster] root 2221 1 0 15:47 ? 00:00:24 redis-server 0.0.0.0:6385 [cluster] root 2327 1753 0 16:01 pts/0 00:00:00 redis-cli -a 111111 -p 6385 root 2472 1 0 16:44 ? 00:00:00 redis-server 0.0.0.0:6387 [cluster] root 2479 1 0 16:44 ? 00:00:00 redis-server 0.0.0.0:6388 [cluster] root 2486 1954 0 16:44 pts/1 00:00:00 grep --color=auto redis [root@redis-cluster1 cluster]# redis-cli -a 111111 -p 6387 Warning: Using a password with '-a' or '-u' option on the command line interface may not be safe. 127.0.0.1:6387> 127.0.0.1:6387> 127.0.0.1:6387> cluster nodes 494e60980fac86000312e544f71c0e835bc1445b :6387@16387 myself,master - 0 0 0 connected 127.0.0.1:6387>
將新增的6387節(jié)點(diǎn)作為master加入原集群
將新增的6387作為master節(jié)點(diǎn)加入原有集群
redis-cli -a 密碼 --cluster add-node,自己實(shí)際IP地址:6387 自己實(shí)際IP地址:6381
6387 就是將要作為master新增節(jié)點(diǎn)
6381 就是原來集群節(jié)點(diǎn)里面的領(lǐng)路人，相當(dāng)于6387拜拜6381的碼頭從而找到組織加入集群redis-cli -a 111111 --cluster add-node 192.168.111.174:6387 192.168.111.175:6381
[root@redis-cluster1 cluster]# redis-cli -a 111111 --cluster add-node 192.168.58.212:6387 192.168.58.129:6381 Warning: Using a password with '-a' or '-u' option on the command line interface may not be safe. >>> Adding node 192.168.58.212:6387 to cluster 192.168.58.129:6381 >>> Performing Cluster Check (using node 192.168.58.129:6381) M: ba40235fdad71fb36c3bf165ea51055825d453c2 192.168.58.129:6381 slots:[0-5460] (5461 slots) master 1 additional replica(s) S: fedf4b13be2122f44dde749a08c4b943582b3566 192.168.58.129:6382 slots: (0 slots) slave replicates be191621d4aa881d864a113c385d58b751753392 S: 91cf395e8f04a5df1aeec4602dd38b3e4a708d55 192.168.58.130:6384 slots: (0 slots) slave replicates ba40235fdad71fb36c3bf165ea51055825d453c2 M: 0a820807a70885c1d87d141824d3869dcf2418ee 192.168.58.130:6383 slots:[5461-10922] (5462 slots) master 1 additional replica(s) M: be191621d4aa881d864a113c385d58b751753392 192.168.58.212:6385 slots:[10923-16383] (5461 slots) master 1 additional replica(s) S: 30e5bdec200a671e4de666551d4489f0035235ba 192.168.58.212:6386 slots: (0 slots) slave replicates 0a820807a70885c1d87d141824d3869dcf2418ee [OK] All nodes agree about slots configuration. >>> Check for open slots... >>> Check slots coverage... [OK] All 16384 slots covered. >>> Getting functions from cluster >>> Send FUNCTION LIST to 192.168.58.212:6387 to verify there is no functions in it >>> Send FUNCTION RESTORE to 192.168.58.212:6387 >>> Send CLUSTER MEET to node 192.168.58.212:6387 to make it join the cluster. [OK] New node added correctly.
第一次檢查集群狀態(tài)：
6387還沒有被分配槽位
[root@redis-cluster1 cluster]# redis-cli -a 111111 --cluster check 192.168.58.129:6381 Warning: Using a password with '-a' or '-u' option on the command line interface may not be safe. 192.168.58.129:6381 (ba40235f...) -> 0 keys | 5461 slots | 1 slaves. 192.168.58.130:6383 (0a820807...) -> 0 keys | 5462 slots | 1 slaves. 192.168.58.212:6385 (be191621...) -> 0 keys | 5461 slots | 1 slaves. 192.168.58.212:6387 (494e6098...) -> 0 keys | 0 slots | 0 slaves. [OK] 0 keys in 4 masters. 0.00 keys per slot on average. >>> Performing Cluster Check (using node 192.168.58.129:6381) M: ba40235fdad71fb36c3bf165ea51055825d453c2 192.168.58.129:6381 slots:[0-5460] (5461 slots) master 1 additional replica(s) S: fedf4b13be2122f44dde749a08c4b943582b3566 192.168.58.129:6382 slots: (0 slots) slave replicates be191621d4aa881d864a113c385d58b751753392 S: 91cf395e8f04a5df1aeec4602dd38b3e4a708d55 192.168.58.130:6384 slots: (0 slots) slave replicates ba40235fdad71fb36c3bf165ea51055825d453c2 M: 0a820807a70885c1d87d141824d3869dcf2418ee 192.168.58.130:6383 slots:[5461-10922] (5462 slots) master 1 additional replica(s) M: be191621d4aa881d864a113c385d58b751753392 192.168.58.212:6385 slots:[10923-16383] (5461 slots) master 1 additional replica(s) S: 30e5bdec200a671e4de666551d4489f0035235ba 192.168.58.212:6386 slots: (0 slots) slave replicates 0a820807a70885c1d87d141824d3869dcf2418ee M: 494e60980fac86000312e544f71c0e835bc1445b 192.168.58.212:6387 slots: (0 slots) master [OK] All nodes agree about slots configuration. >>> Check for open slots... >>> Check slots coverage... [OK] All 16384 slots covered.
重新分配槽號(hào)
16384處于4，因?yàn)楝F(xiàn)在有四個(gè)主機(jī)；
填寫6387的id號(hào)；
[root@redis-cluster1 cluster]# redis-cli -a 111111 --cluster reshard 192.168.58.129:6381
Warning: Using a password with '-a' or '-u' option on the command line interface may not be safe.
>>> Performing Cluster Check (using node 192.168.58.129:6381)
M: ba40235fdad71fb36c3bf165ea51055825d453c2 192.168.58.129:6381
slots:[0-5460] (5461 slots) master
1 additional replica(s)
S: fedf4b13be2122f44dde749a08c4b943582b3566 192.168.58.129:6382
slots: (0 slots) slave
replicates be191621d4aa881d864a113c385d58b751753392
S: 91cf395e8f04a5df1aeec4602dd38b3e4a708d55 192.168.58.130:6384
slots: (0 slots) slave
replicates ba40235fdad71fb36c3bf165ea51055825d453c2
M: 0a820807a70885c1d87d141824d3869dcf2418ee 192.168.58.130:6383
slots:[5461-10922] (5462 slots) master
1 additional replica(s)
M: be191621d4aa881d864a113c385d58b751753392 192.168.58.212:6385
slots:[10923-16383] (5461 slots) master
1 additional replica(s)
S: 30e5bdec200a671e4de666551d4489f0035235ba 192.168.58.212:6386
slots: (0 slots) slave
replicates 0a820807a70885c1d87d141824d3869dcf2418ee
M: 494e60980fac86000312e544f71c0e835bc1445b 192.168.58.212:6387
slots: (0 slots) master
[OK] All nodes agree about slots configuration.
>>> Check for open slots...
>>> Check slots coverage...
[OK] All 16384 slots covered.
How many slots do you want to move (from 1 to 16384)? 4096
What is the receiving node ID? 494e60980fac86000312e544f71c0e835bc1445b
Please enter all the source node IDs.
Type 'all' to use all the nodes as source nodes for the hash slots.
Type 'done' once you entered all the source nodes IDs.
Source node #1: all
Ready to move 4096 slots.
Source nodes:
M: ba40235fdad71fb36c3bf165ea51055825d453c2 192.168.58.129:6381
slots:[0-5460] (5461 slots) master
1 additional replica(s)
M: 0a820807a70885c1d87d141824d3869dcf2418ee 192.168.58.130:6383
slots:[5461-10922] (5462 slots) master
1 additional replica(s)
M: be191621d4aa881d864a113c385d58b751753392 192.168.58.212:6385
slots:[10923-16383] (5461 slots) master
1 additional replica(s)
Destination node:
M: 494e60980fac86000312e544f71c0e835bc1445b 192.168.58.212:6387
slots: (0 slots) master
Resharding plan:
再次查看集群狀態(tài)
四個(gè)主節(jié)點(diǎn)均已被分配槽位；
當(dāng)前狀態(tài)為三主三從，一主零從
[root@redis-cluster1 cluster]# redis-cli -a 111111 --cluster check 192.168.58.129:6381 Warning: Using a password with '-a' or '-u' option on the command line interface may not be safe. 192.168.58.129:6381 (ba40235f...) -> 0 keys | 4096 slots | 1 slaves. 192.168.58.130:6383 (0a820807...) -> 0 keys | 4096 slots | 1 slaves. 192.168.58.212:6385 (be191621...) -> 0 keys | 4096 slots | 1 slaves. 192.168.58.212:6387 (494e6098...) -> 0 keys | 4096 slots | 0 slaves. [OK] 0 keys in 4 masters. 0.00 keys per slot on average. >>> Performing Cluster Check (using node 192.168.58.129:6381) M: ba40235fdad71fb36c3bf165ea51055825d453c2 192.168.58.129:6381 slots:[1365-5460] (4096 slots) master 1 additional replica(s) S: fedf4b13be2122f44dde749a08c4b943582b3566 192.168.58.129:6382 slots: (0 slots) slave replicates be191621d4aa881d864a113c385d58b751753392 S: 91cf395e8f04a5df1aeec4602dd38b3e4a708d55 192.168.58.130:6384 slots: (0 slots) slave replicates ba40235fdad71fb36c3bf165ea51055825d453c2 M: 0a820807a70885c1d87d141824d3869dcf2418ee 192.168.58.130:6383 slots:[6827-10922] (4096 slots) master 1 additional replica(s) M: be191621d4aa881d864a113c385d58b751753392 192.168.58.212:6385 slots:[12288-16383] (4096 slots) master 1 additional replica(s) S: 30e5bdec200a671e4de666551d4489f0035235ba 192.168.58.212:6386 slots: (0 slots) slave replicates 0a820807a70885c1d87d141824d3869dcf2418ee M: 494e60980fac86000312e544f71c0e835bc1445b 192.168.58.212:6387 slots:[0-1364],[5461-6826],[10923-12287] (4096 slots) master [OK] All nodes agree about slots configuration. >>> Check for open slots... >>> Check slots coverage... [OK] All 16384 slots covered.
為主節(jié)點(diǎn)87分配從節(jié)點(diǎn)88
[root@redis-cluster1 cluster]# redis-cli -a 111111 --cluster add-node 192.168.58.212:6388 192.168.58.212:6387 --cluster-slave --cluster-master-id 494e60980fac86000312e544f71c0e835bc1445b
--cluster-master-id 494e60980fac86000312e544f71c0e835bc1445b ：主節(jié)點(diǎn)id號(hào)
再次查看當(dāng)前的集群狀態(tài)：
127.0.0.1:6385> cluster nodes 0a820807a70885c1d87d141824d3869dcf2418ee 192.168.58.130:6383@16383 master - 0 1733303488000 3 connected 6827-10922 91cf395e8f04a5df1aeec4602dd38b3e4a708d55 192.168.58.130:6384@16384 slave ba40235fdad71fb36c3bf165ea51055825d453c2 0 1733303487073 1 connected be191621d4aa881d864a113c385d58b751753392 192.168.58.212:6385@16385 myself,master - 0 0 8 connected 12288-16383 30e5bdec200a671e4de666551d4489f0035235ba 192.168.58.212:6386@16386 slave 0a820807a70885c1d87d141824d3869dcf2418ee 0 1733303488559 3 connected ba40235fdad71fb36c3bf165ea51055825d453c2 192.168.58.129:6381@16381 master - 0 1733303488000 1 connected 1365-5460 c26c4f5ec9882083544326df9249fa48e35c6a2a 192.168.58.212:6388@16388 slave 494e60980fac86000312e544f71c0e835bc1445b 0 1733303488345 9 connected 494e60980fac86000312e544f71c0e835bc1445b 192.168.58.212:6387@16387 master - 0 1733303488675 9 connected 0-1364 5461-6826 10923-12287 fedf4b13be2122f44dde749a08c4b943582b3566 192.168.58.129:6382@16382 slave be191621d4aa881d864a113c385d58b751753392 0 1733303488106 8 connected 127.0.0.1:6385>
四主四從，集群擴(kuò)容完成！
[root@redis-cluster1 cluster]# redis-cli -a 111111 --cluster check 192.168.58.129:6381 Warning: Using a password with '-a' or '-u' option on the command line interface may not be safe. 192.168.58.129:6381 (ba40235f...) -> 0 keys | 4096 slots | 1 slaves. 192.168.58.212:6387 (494e6098...) -> 0 keys | 4096 slots | 1 slaves. 192.168.58.130:6383 (0a820807...) -> 0 keys | 4096 slots | 1 slaves. 192.168.58.212:6385 (be191621...) -> 0 keys | 4096 slots | 1 slaves. [OK] 0 keys in 4 masters. 0.00 keys per slot on average. >>> Performing Cluster Check (using node 192.168.58.129:6381) M: ba40235fdad71fb36c3bf165ea51055825d453c2 192.168.58.129:6381 slots:[1365-5460] (4096 slots) master 1 additional replica(s) S: 30e5bdec200a671e4de666551d4489f0035235ba 192.168.58.212:6386 slots: (0 slots) slave replicates 0a820807a70885c1d87d141824d3869dcf2418ee M: 494e60980fac86000312e544f71c0e835bc1445b 192.168.58.212:6387 slots:[0-1364],[5461-6826],[10923-12287] (4096 slots) master 1 additional replica(s) S: fedf4b13be2122f44dde749a08c4b943582b3566 192.168.58.129:6382 slots: (0 slots) slave replicates be191621d4aa881d864a113c385d58b751753392 M: 0a820807a70885c1d87d141824d3869dcf2418ee 192.168.58.130:6383 slots:[6827-10922] (4096 slots) master 1 additional replica(s) S: 91cf395e8f04a5df1aeec4602dd38b3e4a708d55 192.168.58.130:6384 slots: (0 slots) slave replicates ba40235fdad71fb36c3bf165ea51055825d453c2 M: be191621d4aa881d864a113c385d58b751753392 192.168.58.212:6385 slots:[12288-16383] (4096 slots) master 1 additional replica(s) S: c26c4f5ec9882083544326df9249fa48e35c6a2a 192.168.58.212:6388 slots: (0 slots) slave replicates 494e60980fac86000312e544f71c0e835bc1445b [OK] All nodes agree about slots configuration. >>> Check for open slots... >>> Check slots coverage... [OK] All 16384 slots covered.
到此這篇關(guān)于Redis集群擴(kuò)容的實(shí)現(xiàn)示例的文章就介紹到這了,更多相關(guān)Redis集群擴(kuò)容內(nèi)容請(qǐng)搜索腳本之家以前的文章或繼續(xù)瀏覽下面的相關(guān)文章希望大家以后多多支持腳本之家！
相關(guān)文章
Redission實(shí)現(xiàn)分布式鎖lock()和tryLock()方法的區(qū)別小結(jié)
Redisson是一種基于Redis的分布式鎖框架,提供了lock()和tryLock()兩種獲取鎖的方法,本文主要介紹了Redission實(shí)現(xiàn)分布式鎖lock()和tryLock()方法的區(qū)別小結(jié),具有一定的參考價(jià)值,感興趣的可以了解一下2024-07-07
Redis使用ZSET實(shí)現(xiàn)消息隊(duì)列的項(xiàng)目實(shí)踐
本文主要介紹了Redis使用ZSET實(shí)現(xiàn)消息隊(duì)列的項(xiàng)目實(shí)踐，文中通過示例代碼介紹的非常詳細(xì)，對(duì)大家的學(xué)習(xí)或者工作具有一定的參考學(xué)習(xí)價(jià)值，需要的朋友們下面隨著小編來一起學(xué)習(xí)學(xué)習(xí)吧2023-07-07
這篇文章主要介紹了redis如何實(shí)現(xiàn)保存對(duì)象，具有很好的參考價(jià)值，希望對(duì)大家有所幫助。如有錯(cuò)誤或未考慮完全的地方，望不吝賜教2022-06-06
這篇文章主要給大家介紹了關(guān)于redis的bigkey掃描腳本的相關(guān)資料，文中通過示例代碼介紹的非常詳細(xì)，對(duì)大家的學(xué)習(xí)或者工作具有一定的參考學(xué)習(xí)價(jià)值，需要的朋友們下面隨著小編來一起學(xué)習(xí)學(xué)習(xí)吧2018-07-07
Redis是一個(gè)基于內(nèi)存的鍵值存儲(chǔ)系統(tǒng),采用單線程事件驅(qū)動(dòng)架構(gòu)和epoll/kqueue實(shí)現(xiàn)I/O多路復(fù)用,本文給大家介紹Redis 底層運(yùn)行機(jī)制與原理流程分析,感興趣的朋友一起看看吧2025-11-11
這篇文章主要介紹了Redis持久化策略解讀以及如何選擇問題,具有很好的參考價(jià)值,希望對(duì)大家有所幫助,如有錯(cuò)誤或未考慮完全的地方,望不吝賜教2025-06-06
Redis集群是Redis官方推出的分布式解決方案,它允許將數(shù)據(jù)分布在多個(gè)Redis節(jié)點(diǎn)中,從而提高Redis的性能和可擴(kuò)展性,本文給大家介紹了Redis集群部署的過程步驟,需要的朋友可以參考下2024-06-06
在單體應(yīng)用中，如果我們對(duì)共享數(shù)據(jù)不進(jìn)行加鎖操作，會(huì)出現(xiàn)數(shù)據(jù)一致性問題，我們的解決辦法通常是加鎖。下面我們一起聊聊使用redis來實(shí)現(xiàn)分布式鎖2022-06-06
Redis高并發(fā)緩存設(shè)計(jì)問題與性能優(yōu)化
本文詳細(xì)介紹了Redis緩存設(shè)計(jì)中常見的問題及解決方案,包括緩存穿透、緩存失效（擊穿）、緩存雪崩、熱點(diǎn)緩存key重建優(yōu)化、緩存與數(shù)據(jù)庫雙寫不一致以及開發(fā)規(guī)范與性能優(yōu)化,感興趣的可以了解一下2024-11-11
為了提高數(shù)據(jù)處理效率和降低存儲(chǔ)成本,優(yōu)化數(shù)據(jù)結(jié)構(gòu)和采用高效的存儲(chǔ)策略至關(guān)重要,使用最小存儲(chǔ)形式、整數(shù)編碼、Redis的HyperLogLog等方法可以有效減少內(nèi)存占用,Redis6引入的對(duì)象壓縮、設(shè)置合理的過期時(shí)間、數(shù)據(jù)分片2024-09-09