Redis高性能高可用：Redis-Cluster 集群（四）

环境：基于第一节，克隆6台主机（干净的环境）

分别将6个redis的redis.conf就行配置：

#cluster-enabled yes
cluster-enabled yes     #开启集群


#cluster-config-file nodes-6379.conf
cluster-config-file nodes-6379.conf     ##开放注释，cluster自动管理节点


#cluster-node-timeout 5000
cluster-node-timeout 5000       #集群超时时间，如果超时， 则切换主备

appendonly yes    #默认yes，如果是no请修改

分别启动6台主机的Redis服务

[root@redis1 ~]# /etc/init.d/redis_init_script start

构建集群

[root@redis3 redis]# redis-cli -a "123456" --cluster create 10.0.0.43:6379 10.0.0.44:6379 10.0.0.45:6379 10.0.0.46:6379 10.0.0.47:6379 10.0.0.48:6379 --cluster-replicas 1
Warning: Using a password with '-a' or '-u' option on the command line interface may not be safe.
>>> Performing hash slots allocation on 6 nodes...
Master[0] -> Slots 0 - 5460
Master[1] -> Slots 5461 - 10922
Master[2] -> Slots 10923 - 16383
Adding replica 10.0.0.47:6379 to 10.0.0.43:6379
Adding replica 10.0.0.48:6379 to 10.0.0.44:6379
Adding replica 10.0.0.46:6379 to 10.0.0.45:6379          ###cluster自动分配，三主三从
M: 5d012cc78f80276b23762db8336f7b14a9fecb86 10.0.0.43:6379
   slots:[0-5460] (5461 slots) master
M: 34cac491a62a12e7427e7d54184d54d4d3d61281 10.0.0.44:6379
   slots:[5461-10922] (5462 slots) master
M: b0f4dfc00f1a0a5d3e0c06b97737ca7d824da7c7 10.0.0.45:6379
   slots:[10923-16383] (5461 slots) master
S: f91096e9502b9dc0b688248eeb64f80963b110c7 10.0.0.46:6379
   replicates b0f4dfc00f1a0a5d3e0c06b97737ca7d824da7c7
S: 32724100791e5444e0179136c2556c3d5792b936 10.0.0.47:6379
   replicates 5d012cc78f80276b23762db8336f7b14a9fecb86
S: d1cfc38c26704e4ae4bad5473f360c18fbd98c6d 10.0.0.48:6379
   replicates 34cac491a62a12e7427e7d54184d54d4d3d61281
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 10.0.0.43:6379)
M: 5d012cc78f80276b23762db8336f7b14a9fecb86 10.0.0.43:6379
   slots:[0-5460] (5461 slots) master
   1 additional replica(s)
M: b0f4dfc00f1a0a5d3e0c06b97737ca7d824da7c7 10.0.0.45:6379
   slots:[10923-16383] (5461 slots) master
   1 additional replica(s)
S: f91096e9502b9dc0b688248eeb64f80963b110c7 10.0.0.46:6379
   slots: (0 slots) slave
   replicates b0f4dfc00f1a0a5d3e0c06b97737ca7d824da7c7
S: d1cfc38c26704e4ae4bad5473f360c18fbd98c6d 10.0.0.48:6379
   slots: (0 slots) slave
   replicates 34cac491a62a12e7427e7d54184d54d4d3d61281
S: 32724100791e5444e0179136c2556c3d5792b936 10.0.0.47:6379
   slots: (0 slots) slave
   replicates 5d012cc78f80276b23762db8336f7b14a9fecb86
M: 34cac491a62a12e7427e7d54184d54d4d3d61281 10.0.0.44:6379
   slots:[5461-10922] (5462 slots) master
   1 additional replica(s)
[OK] All nodes agree about slots configuration.
>>> Check for open slots...
>>> Check slots coverage...
[OK] All 16384 slots covered.
[root@redis3 redis]#

检查集群信息：redis-cli -a 123456 --cluster check 10.0.0.43:6379

[root@redis3 redis]# redis-cli -a 123456 --cluster check 10.0.0.43:6379
Warning: Using a password with '-a' or '-u' option on the command line interface may not be safe.
10.0.0.43:6379 (5d012cc7...) -> 0 keys | 5461 slots | 1 slaves.
10.0.0.45:6379 (b0f4dfc0...) -> 0 keys | 5461 slots | 1 slaves.
10.0.0.44:6379 (34cac491...) -> 0 keys | 5462 slots | 1 slaves.
[OK] 0 keys in 3 masters.
0.00 keys per slot on average.
>>> Performing Cluster Check (using node 10.0.0.43:6379)
M: 5d012cc78f80276b23762db8336f7b14a9fecb86 10.0.0.43:6379
   slots:[0-5460] (5461 slots) master
   1 additional replica(s)
M: b0f4dfc00f1a0a5d3e0c06b97737ca7d824da7c7 10.0.0.45:6379
   slots:[10923-16383] (5461 slots) master
   1 additional replica(s)
S: f91096e9502b9dc0b688248eeb64f80963b110c7 10.0.0.46:6379
   slots: (0 slots) slave
   replicates b0f4dfc00f1a0a5d3e0c06b97737ca7d824da7c7
S: d1cfc38c26704e4ae4bad5473f360c18fbd98c6d 10.0.0.48:6379
   slots: (0 slots) slave
   replicates 34cac491a62a12e7427e7d54184d54d4d3d61281
S: 32724100791e5444e0179136c2556c3d5792b936 10.0.0.47:6379
   slots: (0 slots) slave
   replicates 5d012cc78f80276b23762db8336f7b14a9fecb86
M: 34cac491a62a12e7427e7d54184d54d4d3d61281 10.0.0.44:6379
   slots:[5461-10922] (5462 slots) master
   1 additional replica(s)
[OK] All nodes agree about slots configuration.
>>> Check for open slots...
>>> Check slots coverage...
[OK] All 16384 slots covered.
[root@redis3 redis]#

通过集群模式连接redis

[root@redis3 redis-cluster-slave]# bin/redis-cli -h 172.16.0.163 -p 6379 -a '123456' -c

如果构建集群的过程中出现了如下错误：
错误1：

[root@redis3 redis]# redis-cli -a "123456" --cluster create 10.0.0.43:6379 10.0.0.44:6379 10.0.0.45:6379 10.0.0.46:6379 10.0.0.47:6379 10.0.0.48:6379 --cluster-replicas 1
Warning: Using a password with '-a' or '-u' option on the command line interface may not be safe.
[ERR] Node 10.0.0.43:6379 is not empty. Either the node already knows other nodes (check with CLUSTER NODES) or contains some key in database 0.

### 可能以前构建过，需要将redis中的 appendonly.aof 、 nodes-6379.conf 删除即可。

错误2：

[root@redis3 ~]# redis-cli --cluster create 10.0.0.43:6379 10.0.0.44:6379 10.0.0.45:6379 10.0.0.46:6379 10.0.0.47:6379 10.0.0.48:6379 --cluster-replicas 1
[ERR] Node 10.0.0.43:6379 NOAUTH Authentication required.

### 需要添加密码进行授权，-a "123456"

错误3：（大量日志占用磁盘的情况）

29132:S 19 May 2021 16:59:32.828 # MASTER aborted replication with an error: NOAUTH Authentication required.
29132:S 19 May 2021 16:59:32.828 * Reconnecting to MASTER 172.16.0.163:6379 after failure
29132:S 19 May 2021 16:59:32.829 * MASTER <-> REPLICA sync started
29132:S 19 May 2021 16:59:32.829 * Non blocking connect for SYNC fired the event.
29132:S 19 May 2021 16:59:32.829 * Master replied to PING, replication can continue...
29132:S 19 May 2021 16:59:32.830 * (Non critical) Master does not understand REPLCONF listening-port: -NOAUTH Authentication required.
29132:S 19 May 2021 16:59:32.830 * (Non critical) Master does not understand REPLCONF capa: -NOAUTH Authentication required.
29132:S 19 May 2021 16:59:32.830 * Partial resynchronization not possible (no cached master)
29132:S 19 May 2021 16:59:32.831 # Unexpected reply to PSYNC from master: -NOAUTH Authentication required.
29132:S 19 May 2021 16:59:32.831 * Retrying with SYNC...
29132:S 19 May 2021 16:59:32.832 # MASTER aborted replication with an error: NOAUTH Authentication required.
29132:S 19 May 2021 16:59:32.832 * Reconnecting to MASTER 172.16.0.163:6379 after failure
29132:S 19 May 2021 16:59:32.832 * MASTER <-> REPLICA sync started
29132:S 19 May 2021 16:59:32.833 * Non blocking connect for SYNC fired the event.
29132:S 19 May 2021 16:59:32.833 * Master replied to PING, replication can continue...
29132:S 19 May 2021 16:59:32.834 * (Non critical) Master does not understand REPLCONF listening-port: -NOAUTH Authentication required.
29132:S 19 May 2021 16:59:32.834 * (Non critical) Master does not understand REPLCONF capa: -NOAUTH Authentication required.
29132:S 19 May 2021 16:59:32.834 * Partial resynchronization not possible (no cached master)
29132:S 19 May 2021 16:59:32.835 # Unexpected reply to PSYNC from master: -NOAUTH Authentication required.
29132:S 19 May 2021 16:59:32.835 * Retrying with SYNC...
29132:S 19 May 2021 16:59:32.835 # MASTER aborted replication with an error: NOAUTH Authentication required.
29132:S 19 May 2021 16:59:32.835 * Reconnecting to MASTER 172.16.0.163:6379 after failure
29132:S 19 May 2021 16:59:32.836 * MASTER <-> REPLICA sync started
29132:S 19 May 2021 16:59:32.836 * Non blocking connect for SYNC fired the event.
29132:S 19 May 2021 16:59:32.837 * Master replied to PING, replication can continue...
29132:S 19 May 2021 16:59:32.838 * (Non critical) Master does not understand REPLCONF listening-port: -NOAUTH Authentication required.
29132:S 19 May 2021 16:59:32.838 * (Non critical) Master does not understand REPLCONF capa: -NOAUTH Authentication required.
29132:S 19 May 2021 16:59:32.838 * Partial resynchronization not possible (no cached master)
29132:S 19 May 2021 16:59:32.839 # Unexpected reply to PSYNC from master: -NOAUTH Authentication required.

如果出现大量这种日志，以上这种情况，则是主从之间需要密码认证才能数据同步，在主从redi.conf中设置masgterauth 123456即可。

SpringBoot 集成cluster集群-配置

spring:
  redis:
#   database: 6  #不写默认为6
    password: 123456
    cluster:
      nodes: 10.0.0.43:6379,10.0.0.44:6379,10.0.0.45:6379,10.0.0.46:6379,10.0.0.47:6379,10.0.0.48:6379

最后修改于 2020-01-10 16:10:54

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