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docker-compose搭建redis-cluster

阿新 • • 發佈：2020-12-23

技術標籤：Dockerdocker分散式redis運維linux

1.上傳離線映象包並解壓匯入

[[email protected] ~]# cd redis-cluster/
[[email protected] redis-cluster]# ls
redis-cluster.tar  redis-trib.tar
[[email protected] redis-cluster]# docker load -i redis-cluster.tar 
[[email protected] redis-cluster]# docker load -i redis-
 
trib.tar 
[[email protected] ~]# docker images|grep redis
redis-cluster                   latest              29e4f38e4475        2 years ago         94.9MB
redis-trib                      latest              0f7b910114d5        3 years ago         32MB
redis-cluster 映象為開啟cluster功能的Redis映象
redis-trib    映象為建立叢集的工具

2. 編寫compose檔案

檔案內容為：

[[email protected] redis]# cat docker-compose.yml 
version: "3"
services:
  redis1:
    image: redis-cluster   
    environment:
      REDIS_PORT: 7001
    ports:
      - "7001:7001"
      - "17001:17001"
  redis2:
    image: redis-cluster   
    environment:
 

      REDIS_PORT: 7002
    ports:
      - "7002:7002"
      - "17002:17002"
  redis3:
    image: redis-cluster   
    environment:
      REDIS_PORT: 7003
    ports:
      - "7003:7003"
      - "17003:17003"
  redis4:
    image: redis-cluster   
    environment:
      REDIS_PORT: 7004
    ports:
      - "7004:7004"
      - "17004:17004"
  redis5:
    image: redis-cluster   
    environment:
      REDIS_PORT: 7005
    ports:
      - "7005:7005"
      - "17005:17005"
  redis6:
    image: redis-cluster   
    environment:
      REDIS_PORT: 7006
    ports:
      - "7006:7006"
      - "17006:17006"
     
[[email protected] redis]#

3. 基於compose檔案執行容器

[[email protected] redis]# docker-compose up -d
Creating network "redis_default" with the default driver
Creating redis_redis1_1 ... done
Creating redis_redis2_1 ... done
Creating redis_redis5_1 ... done
Creating redis_redis3_1 ... done
Creating redis_redis6_1 ... done
Creating redis_redis4_1 ... done

4.檢視執行的容器

[[email protected] redis]# docker-compose ps
     Name                   Command               State                              Ports                           
---------------------------------------------------------------------------------------------------------------------
redis_redis1_1   /usr/local/bin/entrypoint. ...   Up      0.0.0.0:17001->17001/tcp, 6379/tcp, 7000/tcp,              
                                                          0.0.0.0:7001->7001/tcp                                     
redis_redis2_1   /usr/local/bin/entrypoint. ...   Up      0.0.0.0:17002->17002/tcp, 6379/tcp, 7000/tcp,              
                                                          0.0.0.0:7002->7002/tcp                                     
redis_redis3_1   /usr/local/bin/entrypoint. ...   Up      0.0.0.0:17003->17003/tcp, 6379/tcp, 7000/tcp,              
                                                          0.0.0.0:7003->7003/tcp                                     
redis_redis4_1   /usr/local/bin/entrypoint. ...   Up      0.0.0.0:17004->17004/tcp, 6379/tcp, 7000/tcp,              
                                                          0.0.0.0:7004->7004/tcp                                     
redis_redis5_1   /usr/local/bin/entrypoint. ...   Up      0.0.0.0:17005->17005/tcp, 6379/tcp, 7000/tcp,              
                                                          0.0.0.0:7005->7005/tcp                                     
redis_redis6_1   /usr/local/bin/entrypoint. ...   Up      0.0.0.0:17006->17006/tcp, 6379/tcp, 7000/tcp,              
                                                          0.0.0.0:7006->7006/tcp

5. 基於 redis-trib 映象執行容器並建立叢集

–replicas 每個master的slave個數

[[email protected] redis]# docker run --rm -it redis-trib create --replicas 1 192.168.153.188:7001 192.168.153.188:7002 192.168.153.188:7003 192.168.153.188:7004 192.168.153.188:7005 192.168.153.188:7006
>>> Creating cluster
>>> Performing hash slots allocation on 6 nodes...
Using 3 masters:
192.168.153.188:7001
192.168.153.188:7002
192.168.153.188:7003
Adding replica 192.168.153.188:7004 to 192.168.153.188:7001
Adding replica 192.168.153.188:7005 to 192.168.153.188:7002
Adding replica 192.168.153.188:7006 to 192.168.153.188:7003
M: 0df61abb1a4e8fe387fb17d8b1791bc0da6e2e61 192.168.153.188:7001
   slots:0-5460 (5461 slots) master
M: 0835b2910581f50ec4f242c46228548b02c94b57 192.168.153.188:7002
   slots:5461-10922 (5462 slots) master
M: 220f82aaa6cd0ef91e009d7841c1508fa305423b 192.168.153.188:7003
   slots:10923-16383 (5461 slots) master
S: 3ca45a0c709b6c380a371de03e15b6abd3e34096 192.168.153.188:7004
   replicates 0df61abb1a4e8fe387fb17d8b1791bc0da6e2e61
S: ec0a4756ad58bf4e24597eb5df8132b05cdf1d31 192.168.153.188:7005
   replicates 0835b2910581f50ec4f242c46228548b02c94b57
S: eb21f6cbc09c6cd0e1ec0592ce2bbb81378e21a4 192.168.153.188:7006
   replicates 220f82aaa6cd0ef91e009d7841c1508fa305423b
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 192.168.153.188:7001)
M: 0df61abb1a4e8fe387fb17d8b1791bc0da6e2e61 192.168.153.188:7001
   slots:0-5460 (5461 slots) master
   1 additional replica(s)
S: 3ca45a0c709b6c380a371de03e15b6abd3e34096 172.22.0.1:7004@17004
   slots: (0 slots) slave
   replicates 0df61abb1a4e8fe387fb17d8b1791bc0da6e2e61
M: 0835b2910581f50ec4f242c46228548b02c94b57 172.22.0.1:7002@17002
   slots:5461-10922 (5462 slots) master
   1 additional replica(s)
M: 220f82aaa6cd0ef91e009d7841c1508fa305423b 172.22.0.1:7003@17003
   slots:10923-16383 (5461 slots) master
   1 additional replica(s)
S: eb21f6cbc09c6cd0e1ec0592ce2bbb81378e21a4 172.22.0.1:7006@17006
   slots: (0 slots) slave
   replicates 220f82aaa6cd0ef91e009d7841c1508fa305423b
S: ec0a4756ad58bf4e24597eb5df8132b05cdf1d31 172.22.0.1:7005@17005
   slots: (0 slots) slave
   replicates 0835b2910581f50ec4f242c46228548b02c94b57
[OK] All nodes agree about slots configuration.
>>> Check for open slots...
>>> Check slots coverage...
[OK] All 16384 slots covered.
[[email protected] redis]#

6. 連線容器測試

[[email protected] redis]# docker-compose exec redis1 bash

[email protected]8214dd99c27e:/data# redis-cli -c -h 192.168.153.188 -p 7001

//檢視叢集資訊
192.168.153.188:7001> cluster info   
cluster_state:ok
cluster_slots_assigned:16384
cluster_slots_ok:16384
cluster_slots_pfail:0
cluster_slots_fail:0
cluster_known_nodes:6
cluster_size:3
cluster_current_epoch:6
cluster_my_epoch:1
cluster_stats_messages_ping_sent:515
cluster_stats_messages_pong_sent:514
cluster_stats_messages_sent:1029
cluster_stats_messages_ping_received:509
cluster_stats_messages_pong_received:515
cluster_stats_messages_meet_received:5
cluster_stats_messages_received:1029

 //檢視節點資訊
192.168.153.188:7001> cluster nodes  
0df61abb1a4e8fe387fb17d8b1791bc0da6e2e61 172.22.0.5:7001@17001 myself,master - 0 1608607239000 1 connected 0-5460
3ca45a0c709b6c380a371de03e15b6abd3e34096 172.22.0.1:7004@17004 slave 0df61abb1a4e8fe387fb17d8b1791bc0da6e2e61 0 1608607241253 4 connected
0835b2910581f50ec4f242c46228548b02c94b57 172.22.0.1:7002@17002 master - 0 1608607240550 2 connected 5461-10922
220f82aaa6cd0ef91e009d7841c1508fa305423b 172.22.0.1:7003@17003 master - 0 1608607241054 3 connected 10923-16383
eb21f6cbc09c6cd0e1ec0592ce2bbb81378e21a4 172.22.0.1:7006@17006 slave 220f82aaa6cd0ef91e009d7841c1508fa305423b 0 1608607240246 6 connected
ec0a4756ad58bf4e24597eb5df8132b05cdf1d31 172.22.0.1:7005@17005 slave 0835b2910581f50ec4f242c46228548b02c94b57 0 1608607241000 5 connected
192.168.153.188:7001> 

建立鍵值對測試
192.168.153.188:7001> set name tom
-> Redirected to slot [5798] located at 172.22.0.1:7002
OK
172.22.0.1:7002> get name
"tom"
172.22.0.1:7002> set city beijing
-> Redirected to slot [11479] located at 172.22.0.1:7003
OK
172.22.0.1:7003> get city
"beijing"
172.22.0.1:7003>

7.高可用測試

停掉3 叢集仍然可用 資料沒有丟失



[email protected]8214dd99c27e:/data# redis-cli -c -h 192.168.153.188 -p 7003 shutdown

[email protected]8214dd99c27e:/data# redis-cli -c -h 192.168.153.188 -p 7001

192.168.153.188:7001> cluster info
cluster_state:ok
cluster_slots_assigned:16384
cluster_slots_ok:16384
cluster_slots_pfail:0
cluster_slots_fail:0
cluster_known_nodes:6
cluster_size:3
cluster_current_epoch:7
cluster_my_epoch:1
cluster_stats_messages_ping_sent:1628
cluster_stats_messages_pong_sent:1324
cluster_stats_messages_fail_sent:4
cluster_stats_messages_auth-ack_sent:1
cluster_stats_messages_sent:2957
cluster_stats_messages_ping_received:1319
cluster_stats_messages_pong_received:1336
cluster_stats_messages_meet_received:5
cluster_stats_messages_fail_received:1
cluster_stats_messages_auth-req_received:1
cluster_stats_messages_received:2662

192.168.153.188:7001> cluster nodes
0df61abb1a4e8fe387fb17d8b1791bc0da6e2e61 172.22.0.5:7001@17001 myself,master - 0 1608607669000 1 connected 0-5460
3ca45a0c709b6c380a371de03e15b6abd3e34096 172.22.0.1:7004@17004 slave 0df61abb1a4e8fe387fb17d8b1791bc0da6e2e61 0 1608607670354 4 connected
0835b2910581f50ec4f242c46228548b02c94b57 172.22.0.1:7002@17002 master - 0 1608607670000 2 connected 5461-10922
220f82aaa6cd0ef91e009d7841c1508fa305423b 172.22.0.1:7003@17003 master,fail - 1608607630805 1608607629902 3 disconnected
eb21f6cbc09c6cd0e1ec0592ce2bbb81378e21a4 172.22.0.1:7006@17006 master - 0 1608607668330 7 connected 10923-16383
ec0a4756ad58bf4e24597eb5df8132b05cdf1d31 172.22.0.1:7005@17005 slave 0835b2910581f50ec4f242c46228548b02c94b57 0 1608607669851 5 connected

192.168.153.188:7001> get city
-> Redirected to slot [11479] located at 172.22.0.1:7006
"beijing"
172.22.0.1:7006>

再停掉1和2

停掉1之後退出
[email protected]8214dd99c27e:/data# redis-cli -c -h 192.168.153.188 -p 7001 shutdown
[email protected]8214dd99c27e:/data# 
[[email protected] redis]# 
[[email protected] redis]# docker-compose ps
     Name                   Command               State                                   Ports                                
-------------------------------------------------------------------------------------------------------------------------------
redis_redis1_1   /usr/local/bin/entrypoint. ...   Exit 0                                                                       
redis_redis2_1   /usr/local/bin/entrypoint. ...   Up       0.0.0.0:17002->17002/tcp, 6379/tcp, 7000/tcp, 0.0.0.0:7002->7002/tcp
redis_redis3_1   /usr/local/bin/entrypoint. ...   Exit 0                                                                       
redis_redis4_1   /usr/local/bin/entrypoint. ...   Up       0.0.0.0:17004->17004/tcp, 6379/tcp, 7000/tcp, 0.0.0.0:7004->7004/tcp
redis_redis5_1   /usr/local/bin/entrypoint. ...   Up       0.0.0.0:17005->17005/tcp, 6379/tcp, 7000/tcp, 0.0.0.0:7005->7005/tcp
redis_redis6_1   /usr/local/bin/entrypoint. ...   Up       0.0.0.0:17006->17006/tcp, 6379/tcp, 7000/tcp, 0.0.0.0:7006->7006/tcp
連線4停掉2
[[email protected] redis]# docker-compose exec redis4 bash
[email protected]39dcd8bd7bad:/data# redis-cli -c -h 192.168.153.188 -p 7002 shutdown

檢視資料仍然沒有丟失
[email protected]39dcd8bd7bad:/data# redis-cli -c -h 192.168.153.188 -p 7004         
192.168.153.188:7004> get name
-> Redirected to slot [5798] located at 172.22.0.1:7005
"tom"
172.22.0.1:7005> get city
-> Redirected to slot [11479] located at 172.22.0.1:7006
"beijing"
172.22.0.1:7006> exit
[email protected]39dcd8bd7bad:/data# exit
exit
[[email protected] redis]# docker-compose ps
     Name                   Command               State                                   Ports                                
-------------------------------------------------------------------------------------------------------------------------------
redis_redis1_1   /usr/local/bin/entrypoint. ...   Exit 0                                                                       
redis_redis2_1   /usr/local/bin/entrypoint. ...   Exit 0                                                                       
redis_redis3_1   /usr/local/bin/entrypoint. ...   Exit 0                                                                       
redis_redis4_1   /usr/local/bin/entrypoint. ...   Up       0.0.0.0:17004->17004/tcp, 6379/tcp, 7000/tcp, 0.0.0.0:7004->7004/tcp
redis_redis5_1   /usr/local/bin/entrypoint. ...   Up       0.0.0.0:17005->17005/tcp, 6379/tcp, 7000/tcp, 0.0.0.0:7005->7005/tcp
redis_redis6_1   /usr/local/bin/entrypoint. ...   Up       0.0.0.0:17006->17006/tcp, 6379/tcp, 7000/tcp, 0.0.0.0:7006->7006/tcp
[[email protected] redis]#

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