[大数据] redis集群部署—

开发: C++知识库 Java知识库 JavaScript Python PHP知识库人工智能区块链大数据移动开发嵌入式开发工具数据结构与算法开发测试游戏开发网络协议系统运维
教程: HTML教程 CSS教程 JavaScript教程 Go语言教程 JQuery教程 VUE教程 VUE3教程 Bootstrap教程 SQL数据库教程 C语言教程 C++教程 Java教程 Python教程 Python3教程 C#教程
数码: 电脑笔记本显卡显示器固态硬盘硬盘耳机手机 iphone vivo oppo 小米华为单反装机图拉丁

-> 大数据 -> redis集群部署——排错 -> 正文阅读

[大数据]redis集群部署——排错

redis集群部署时候，已经部署了集群（三主三从）
问题一
在这里插入图片描述

192.168.1.134:7000>  cluster nodes 
ba4f83ec20945617d089adf7db640a6052cb2fa5 192.168.1.133:7002@17002 slave 17ff68e0800d8aea279bddacf27c5d2d0cfb52a0 0 1654065263135 7 connected
e1804de236f04b121ffff5bb5c5e661adfa50c66 192.168.1.135:7004@17004 master - 0 1654065261124 5 connected 10923-16383
17ff68e0800d8aea279bddacf27c5d2d0cfb52a0 192.168.1.135:7005@17005 master - 0 1654065262000 7 connected 5461-10922
2f6d776193a48b4dd39c908a6f0cd7c99450746d 192.168.1.134:7001@17001 slave e1804de236f04b121ffff5bb5c5e661adfa50c66 0 1654065259000 5 connected
70d81f0d43f2bc131ad7356711c5b49d49d10507 192.168.1.133:7003@17003 slave 1731b6bbca92f945dd01cf589c8f0fbc5048205b 0 1654065262129 1 connected
1731b6bbca92f945dd01cf589c8f0fbc5048205b 192.168.1.134:7000@17000 myself,master - 0 1654065261000 1 connected 0-5460

但是因为一些误操作出现了以下问题：

192.168.1.134:7001> cluster info 
cluster_state:ok
cluster_slots_assigned:16384
cluster_slots_ok:16384
cluster_slots_pfail:0
cluster_slots_fail:0
cluster_known_nodes:5
cluster_size:3
cluster_current_epoch:8
cluster_my_epoch:5
cluster_stats_messages_ping_sent:60
cluster_stats_messages_pong_sent:66
cluster_stats_messages_sent:126
cluster_stats_messages_ping_received:66
cluster_stats_messages_pong_received:59
cluster_stats_messages_received:125
192.168.1.134:7001> cluster nodes
2f6d776193a48b4dd39c908a6f0cd7c99450746d 192.168.1.134:7001@17001 myself,slave e1804de236f04b121ffff5bb5c5e661adfa50c66 0 1654075034000 5 connected
ba4f83ec20945617d089adf7db640a6052cb2fa5 192.168.1.133:7002@17002 master - 0 1654075035373 8 connected 5461-10922
1731b6bbca92f945dd01cf589c8f0fbc5048205b 192.168.1.134:7000@17000 master - 0 1654075036000 1 connected 0-5460
70d81f0d43f2bc131ad7356711c5b49d49d10507 192.168.1.133:7003@17003 slave 1731b6bbca92f945dd01cf589c8f0fbc5048205b 0 1654075037000 1 connected
e1804de236f04b121ffff5bb5c5e661adfa50c66 192.168.1.135:7004@17004 master - 0 1654075037386 5 connected 10923-16383

在这里插入图片描述
三主三从变三主两从。192.168.1.133:7005不见了。
看7005的日志

[root@localhost redis]# tail -29 /var/log/redis_7005.log 
30878:M 01 Jun 2022 05:01:01.845 * Node configuration loaded, I'm 17ff68e0800d8aea279bddacf27c5d2d0cfb52a0
30878:M 01 Jun 2022 05:01:01.846 * Running mode=cluster, port=7005.
30878:M 01 Jun 2022 05:01:01.846 # WARNING: The TCP backlog setting of 511 cannot be enforced because /proc/sys/net/core/somaxconn is set to the lower value of 128.
30878:M 01 Jun 2022 05:01:01.846 # Server initialized
30878:M 01 Jun 2022 05:01:01.846 * Reading RDB preamble from AOF file...
30878:M 01 Jun 2022 05:01:01.846 * Loading RDB produced by version 6.2.0
30878:M 01 Jun 2022 05:01:01.846 * RDB age 7464 seconds
30878:M 01 Jun 2022 05:01:01.846 * RDB memory usage when created 2.50 Mb
30878:M 01 Jun 2022 05:01:01.846 * RDB has an AOF tail
30878:M 01 Jun 2022 05:01:01.846 * Reading the remaining AOF tail...
30878:M 01 Jun 2022 05:01:01.846 * DB loaded from append only file: 0.000 seconds
30878:M 01 Jun 2022 05:01:01.846 * Ready to accept connections
48593:C 01 Jun 2022 05:16:19.128 # oO0OoO0OoO0Oo Redis is starting oO0OoO0OoO0Oo
48593:C 01 Jun 2022 05:16:19.128 # Redis version=6.2.0, bits=64, commit=00000000, modified=0, pid=48593, just started
48593:C 01 Jun 2022 05:16:19.128 # Configuration loaded
48593:M 01 Jun 2022 05:16:19.247 * Increased maximum number of open files to 10032 (it was originally set to 1024).
48593:M 01 Jun 2022 05:16:19.247 * monotonic clock: POSIX clock_gettime
48593:M 01 Jun 2022 05:16:19.247 * Node configuration loaded, I'm 17ff68e0800d8aea279bddacf27c5d2d0cfb52a0
48593:M 01 Jun 2022 05:16:19.247 * Running mode=cluster, port=7005.
48593:M 01 Jun 2022 05:16:19.247 # WARNING: The TCP backlog setting of 511 cannot be enforced because /proc/sys/net/core/somaxconn is set to the lower value of 128.
48593:M 01 Jun 2022 05:16:19.247 # Server initialized
48593:M 01 Jun 2022 05:16:19.248 * Reading RDB preamble from AOF file...
48593:M 01 Jun 2022 05:16:19.248 * Loading RDB produced by version 6.2.0
48593:M 01 Jun 2022 05:16:19.248 * RDB age 8382 seconds
48593:M 01 Jun 2022 05:16:19.248 * RDB memory usage when created 2.50 Mb
48593:M 01 Jun 2022 05:16:19.248 * RDB has an AOF tail
48593:M 01 Jun 2022 05:16:19.248 * Reading the remaining AOF tail...
48593:M 01 Jun 2022 05:16:19.248 * DB loaded from append only file: 0.000 seconds
48593:M 01 Jun 2022 05:16:19.248 * Ready to accept connections

一点用都没。
发现7002有主没从。
那就加7005到7002。
在这里插入图片描述
改变想法。它没了，我就添加它。

 src/redis-cli --cluster add-node 192.168.1.135:7005 192.168.1.133:7002 --cluster-slave --cluster-master-id ba4f83ec20945617d089adf7db640a6052cb2fa5
>>> Adding node 192.168.1.135:7005 to cluster 192.168.1.133:7002
>>> Performing Cluster Check (using node 192.168.1.133:7002)
M: ba4f83ec20945617d089adf7db640a6052cb2fa5 192.168.1.133:7002
   slots:[5461-10922] (5462 slots) master
M: e1804de236f04b121ffff5bb5c5e661adfa50c66 192.168.1.135:7004
   slots:[10923-16383] (5461 slots) master
   1 additional replica(s)
S: 2f6d776193a48b4dd39c908a6f0cd7c99450746d 192.168.1.134:7001
   slots: (0 slots) slave
   replicates e1804de236f04b121ffff5bb5c5e661adfa50c66
S: 70d81f0d43f2bc131ad7356711c5b49d49d10507 192.168.1.133:7003
   slots: (0 slots) slave
   replicates 1731b6bbca92f945dd01cf589c8f0fbc5048205b
M: 1731b6bbca92f945dd01cf589c8f0fbc5048205b 192.168.1.134:7000
   slots:[0-5460] (5461 slots) master
   1 additional replica(s)
[OK] All nodes agree about slots configuration.
>>> Check for open slots...
[WARNING] Node 192.168.1.135:7004 has slots in importing state 5798.
[WARNING] Node 192.168.1.134:7000 has slots in importing state 5798,12958,13593.
[WARNING] The following slots are open: 13593,12958,5798.
>>> Check slots coverage...
[OK] All 16384 slots covered.

在这里插入图片描述

重点来了

[ERR] WARNING] Node 192.168.1.135:7004 has slots in importing state 5798.
[WARNING] Node 192.168.1.134:7000 has slots in importing state 5798,12958,13593.
[WARNING] The following slots are open: 13593,12958,5798.

说明有几个slots正在输入。而我确定这不可能啊。那他就错了。
问题一解决方法
进入另外的集群机器。删除相关槽数据

[root@localhost redis]# src/redis-cli -h 192.168.1.134 -c -p 7000
192.168.1.134:7000> cluster setslot 13593 stable
OK
192.168.1.134:7000> cluster setslot 5798 stable
OK
192.168.1.134:7000> cluster setslot 12958 stable
OK

[root@localhost redis]# src/redis-cli -h 192.168.1.134 -c -p 7000
192.168.1.134:7000> cluster setslot 5798 stable
OK
在这里插入图片描述

再从新添加就好了

[root@localhost redis]# src/redis-cli --cluster add-node 192.168.1.135:7005 192.168.1.133:7002 --cluster-slave --cluster-master-id ba4f83ec20945617d089adf7db640a6052cb2fa5
>>> Adding node 192.168.1.135:7005 to cluster 192.168.1.133:7002
>>> Performing Cluster Check (using node 192.168.1.133:7002)
M: ba4f83ec20945617d089adf7db640a6052cb2fa5 192.168.1.133:7002
   slots:[5461-10922] (5462 slots) master
M: 1731b6bbca92f945dd01cf589c8f0fbc5048205b 192.168.1.134:7000
   slots:[0-5460] (5461 slots) master
   1 additional replica(s)
S: 70d81f0d43f2bc131ad7356711c5b49d49d10507 192.168.1.133:7003
   slots: (0 slots) slave
   replicates 1731b6bbca92f945dd01cf589c8f0fbc5048205b
S: 2f6d776193a48b4dd39c908a6f0cd7c99450746d 192.168.1.134:7001
   slots: (0 slots) slave
   replicates e1804de236f04b121ffff5bb5c5e661adfa50c66
M: e1804de236f04b121ffff5bb5c5e661adfa50c66 192.168.1.135:7004
   slots:[10923-16383] (5461 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.
>>> Send CLUSTER MEET to node 192.168.1.135:7005 to make it join the cluster.
Waiting for the cluster to join

>>> Configure node as replica of 192.168.1.133:7002.
[OK] New node added correctly.

在这里插入图片描述
查询就有了

在这里插入图片描述

192.168.1.133:7002> cluster nodes
b5fbed0a0bb1dbf44275f473ca09bdfd79f4d64a 192.168.1.135:7005@17005 slave ba4f83ec20945617d089adf7db640a6052cb2fa5 0 1654078383000 8 connected
1731b6bbca92f945dd01cf589c8f0fbc5048205b 192.168.1.134:7000@17000 master - 0 1654078383620 1 connected 0-5460
70d81f0d43f2bc131ad7356711c5b49d49d10507 192.168.1.133:7003@17003 slave 1731b6bbca92f945dd01cf589c8f0fbc5048205b 0 1654078382615 1 connected
2f6d776193a48b4dd39c908a6f0cd7c99450746d 192.168.1.134:7001@17001 slave e1804de236f04b121ffff5bb5c5e661adfa50c66 0 1654078381610 5 connected
e1804de236f04b121ffff5bb5c5e661adfa50c66 192.168.1.135:7004@17004 master - 0 1654078382000 5 connected 10923-16383
ba4f83ec20945617d089adf7db640a6052cb2fa5 192.168.1.133:7002@17002 myself,master - 0 1654078382000 8 connected 5461-10922