Redis 6.X Cluster集群如何搭建

这篇文章将为大家详细讲解有关Redis 6.X Cluster集群如何搭建，小编觉得挺实用的，因此分享给大家做个参考，希望大家阅读完这篇文章后可以有所收获。

Part1Redis 6.X Cluster 集群搭建

1下载解压

可直接到 Redis 官网下载最新稳定包，地址：https://redis.io/download。或者使用 命令：sudo wget http://download.redis.io/releases/redis-6.0.9.tar.gz 下载安装包.。

码哥统一把软件包放在 /opt/soft 目录下，并创建目录 mkdir redisCluster用于放置集群配置文件。在 redisCluster 目录下执行 mkdir 7000 7001 7002 7003 7004 7005 创建 6 个目录分别对应每个节点 redis.conf 配置模板。

tar -zxf redis-6.0.9.tar.gz -C redisCluster 解压到 redisCluster 目录中。

2make 编译

在编译之前我们需要确认 gcc 版本，自 redis 6.0.0 之后，编译 redis 需要支持 C11 特性，C11 特性在 4.9 中被引入。Centos 7 默认 gcc 版本为 4.8.5，所以需要升级gcc版本。

编译错误

否则在编译过程中会遇到如下错误日志：

In file included from server.c:31:0: server.c:4999:59: error: ‘struct redisServer’ has no member named ‘cluster’              (server.cluster_enabled && nodeIsMaster(server.cluster->myself)));                                                            ^ cluster.h:58:27: note: in definition of macro ‘nodeIsMaster’  #define nodeIsMaster(n) ((n)->flags & CLUSTER_NODE_MASTER)                            ^ server.c: In function ‘main’: server.c:5047:11: error: ‘struct redisServer’ has no member named ‘sentinel_mode’      server.sentinel_mode = checkForSentinelMode(argc,argv);            ^ server.c:5064:15: error: ‘struct redisServer’ has no member named ‘sentinel_mode’      if (server.sentinel_mode) {                ^ server.c:5131:19: error: ‘struct redisServer’ has no member named ‘sentinel_mode’          if (server.sentinel_mode && configfile && *configfile == '-') {                    ^ server.c:5153:168: error: ‘struct redisServer’ has no member named ‘sentinel_mode’          serverLog(LL_WARNING, "Warning: no config file specified, using the default config. In order to specify a config file use %s /path/to/%s.conf", argv[0], server.sentinel_mode ? "sentinel" : "redis");                                                                                                                                                                         ^ server.c:5158:11: error: ‘struct redisServer’ has no member named ‘supervised’      server.supervised = redisIsSupervised(server.supervised_mode);            ^ server.c:5158:49: error: ‘struct redisServer’ has no member named ‘supervised_mode’      server.supervised = redisIsSupervised(server.supervised_mode);                                                  ^ server.c:5159:28: error: ‘struct redisServer’ has no member named ‘daemonize’      int background = server.daemonize && !server.supervised;                             ^ server.c:5159:49: error: ‘struct redisServer’ has no member named ‘supervised’      int background = server.daemonize && !server.supervised;                                                  ^ server.c:5163:29: error: ‘struct redisServer’ has no member named ‘pidfile’      if (background || server.pidfile) createPidFile();                              ^ server.c:5168:16: error: ‘struct redisServer’ has no member named ‘sentinel_mode’      if (!server.sentinel_mode) {                 ^ server.c:5178:19: error: ‘struct redisServer’ has no member named ‘cluster_enabled’          if (server.cluster_enabled) {                    ^ server.c:5186:19: error: ‘struct redisServer’ has no member named ‘ipfd_count’          if (server.ipfd_count > 0 || server.tlsfd_count > 0)                    ^ server.c:5186:44: error: ‘struct redisServer’ has no member named ‘tlsfd_count’          if (server.ipfd_count > 0 || server.tlsfd_count > 0)                                             ^ server.c:5188:19: error: ‘struct redisServer’ has no member named ‘sofd’          if (server.sofd > 0)                    ^ server.c:5189:94: error: ‘struct redisServer’ has no member named ‘unixsocket’              serverLog(LL_NOTICE,"The server is now ready to accept connections at %s", server.unixsocket);                                                                                               ^ server.c:5190:19: error: ‘struct redisServer’ has no member named ‘supervised_mode’          if (server.supervised_mode == SUPERVISED_SYSTEMD) {                    ^ server.c:5191:24: error: ‘struct redisServer’ has no member named ‘masterhost’              if (!server.masterhost) {                         ^ server.c:5201:19: error: ‘struct redisServer’ has no member named ‘supervised_mode’          if (server.supervised_mode == SUPERVISED_SYSTEMD) {                    ^ server.c:5208:15: error: ‘struct redisServer’ has no member named ‘maxmemory’      if (server.maxmemory > 0 && server.maxmemory < 1024*1024) {                ^ server.c:5208:39: error: ‘struct redisServer’ has no member named ‘maxmemory’      if (server.maxmemory > 0 && server.maxmemory < 1024*1024) {                                        ^ server.c:5209:176: error: ‘struct redisServer’ has no member named ‘maxmemory’          serverLog(LL_WARNING,"WARNING: You specified a maxmemory value that is less than 1MB (current value is %llu bytes). Are you sure this is what you really want?", server.maxmemory);                                                                                                                                                                                 ^ server.c:5212:31: error: ‘struct redisServer’ has no member named ‘server_cpulist’      redisSetCpuAffinity(server.server_cpulist);                                ^ server.c: In function ‘hasActiveChildProcess’: server.c:1480:1: warning: control reaches end of non-void function [-Wreturn-type]  }  ^ server.c: In function ‘allPersistenceDisabled’: server.c:1486:1: warning: control reaches end of non-void function [-Wreturn-type]  }  ^ server.c: In function ‘writeCommandsDeniedByDiskError’: server.c:3826:1: warning: control reaches end of non-void function [-Wreturn-type]  }  ^ server.c: In function ‘iAmMaster’: server.c:5000:1: warning: control reaches end of non-void function [-Wreturn-type]  }  ^  ....

解决方式

yum -y install gcc gcc-c++ make tcl yum -y install centos-release-scl yum -y install devtoolset-9-gcc devtoolset-9-gcc-c++ devtoolset-9-binutils scl enable devtoolset-9 bash

升级之后便可解决 make 报错问题。

注意：scl命令启用只是临时的，退出xshell或者重启就会恢复到原来的gcc版本。如果要长期生效的话，执行如下 sudo echo "source /opt/rh/devtoolset-9/enable" >>/etc/profile。

cd /opt/soft/redisCluster/redis-6.0.9 切换到目录执行 make 。

编译完成使用 make install 对 redis 进行安装 ，命令：sudo make install。

3修改配置文件

cd /opt/soft/redisCluster/redis-6.0.9 将 redis.conf 分别复制到 7000 7001 7002 7003 7004 目录中。

分别修改 6 个 redis.conf

## 7000-7005端口 port 7000 ## 后台启动 daemonize yes ## 如果是在单机模拟集群必须指定bind的IP，如果不修改ip的话使用程序连接集群会报错 bind 192.168.221.150 ## 开启redis-cluster集群 cluster-enabled yes ## 每个实例还包含存储此节点配置的文件的路径，默认情况下为nodes.conf，自动创建 cluster-config-file nodes_7000.conf ## 超时 cluster-node-timeout 500 ## 开启aof appendonly yes   #注释cluster集群下不允许复制。 #replicaof 127.0.0.1 9000 #关闭保护模式,如果开启需要设置密码，比较繁琐，可根据自己的需求来 protected-mode no

每个配置文件只需要修改 port 和 cluster-config-file 就可以了。

4启动节点并创建集群

启动节点

进入 redisCluster 目录，执行指令依次启动每个节点。redis-6.0.9/src/redis-server 700x/redis.conf 注意指定每个节点配置文件，如果不指定配置文件会默认使用src下的配置。

创建集群

进入任意一个节点，执行以下指令创建集群

指令如下：

redis-6.0.9/src/redis-cli --cluster create 172.16.90.152:7000 172.16.90.152:7001 172.16.90.152:7002 172.16.90.152:7003 172.16.90.152:7004 172.16.90.152:7005 --cluster-replicas 1

集群参数解释：

• cluster-replicas 1：表示希望为集群中的每个主节点创建一个从节点(一主一从)。

• cluster-replicas 2：表示希望为集群中的每个主节点创建两个从节点(一主二从)。

控制台响应：

>>> Performing hash slots allocation on 6 nodes... Master[0] -> Slots 0 - 5460 Master[1] -> Slots 5461 - 10922 Master[2] -> Slots 10923 - 16383 Adding replica 172.16.90.152:7004 to 172.16.90.152:7000 Adding replica 172.16.90.152:7005 to 172.16.90.152:7001 Adding replica 172.16.90.152:7003 to 172.16.90.152:7002 >>> Trying to optimize slaves allocation for anti-affinity [WARNING] Some slaves are in the same host as their master M: 06c56f5a6a4436108fae931be499465985141d39 172.16.90.152:7000    slots:[0-5460] (5461 slots) master M: 0ab7c9efd97319d94a8ea52452ec58f7708d812d 172.16.90.152:7001    slots:[5461-10922] (5462 slots) master M: 096f076d99363270c02785a2fb298e2ee65d3f07 172.16.90.152:7002    slots:[10923-16383] (5461 slots) master S: 69d621060295eb433af3e34e702142df0fd4d73d 172.16.90.152:7003    replicates 06c56f5a6a4436108fae931be499465985141d39 S: 1d37df0aa0e2310aedb5a380f95cc818256003f8 172.16.90.152:7004    replicates 0ab7c9efd97319d94a8ea52452ec58f7708d812d S: d9204f6da875a4b2522c5fa25d9e6c1f95cf51ea 172.16.90.152:7005    replicates 096f076d99363270c02785a2fb298e2ee65d3f07 Can I set the above configuration? (type 'yes' to accept):

Can I set the above configuration? (type 'yes' to accept): 询问是否确认节点 slots 分配方案， 我们输入 ‘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 172.16.90.152:7000) M: 06c56f5a6a4436108fae931be499465985141d39 172.16.90.152:7000    slots:[0-5460] (5461 slots) master    1 additional replica(s) S: 1d37df0aa0e2310aedb5a380f95cc818256003f8 172.16.90.152:7004    slots: (0 slots) slave    replicates 0ab7c9efd97319d94a8ea52452ec58f7708d812d M: 0ab7c9efd97319d94a8ea52452ec58f7708d812d 172.16.90.152:7001    slots:[5461-10922] (5462 slots) master    1 additional replica(s) S: d9204f6da875a4b2522c5fa25d9e6c1f95cf51ea 172.16.90.152:7005    slots: (0 slots) slave    replicates 096f076d99363270c02785a2fb298e2ee65d3f07 S: 69d621060295eb433af3e34e702142df0fd4d73d 172.16.90.152:7003    slots: (0 slots) slave    replicates 06c56f5a6a4436108fae931be499465985141d39 M: 096f076d99363270c02785a2fb298e2ee65d3f07 172.16.90.152:7002    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.

[OK] All 16384 slots covered.

到此完成!

5查看集群状态

redis-6.0.9/src/redis-cli --cluster check 172.16.90.152:7000

6注意事项

当使用 redis-6.0.9/src/redis-cli --cluster create 172.16.90.152:7000 172.16.90.152:7001 172.16.90.152:7002 172.16.90.152:7003 172.16.90.152:7004 172.16.90.152:7005 --cluster-replicas 1 创建集群以后，一次创建，永久使用。之后直接启动每个节点即可构建集群。

结束命令：redis-6.0.9/src/redis-cli -c -h 192.168.124.23 -p 7004 shutdown

进入集群命令 redis-cli -c -h host -p prot 不带-c 参数进入的不是集群

关于"Redis 6.X Cluster集群如何搭建"这篇文章就分享到这里了，希望以上内容可以对大家有一定的帮助，使各位可以学到更多知识，如果觉得文章不错，请把它分享出去让更多的人看到。