纯手动创建Redis Cluster集群，最原始的三主三从创建方法

标签：keep   gre   port   hold   命令行   不重启   delay   priority   databases   

环境
三台虚拟机，启动redis双实例，部署三主三从集群；此次是讲解最原始的Cluster集群创建，不使用官方的redis.trib.rb脚本创建，这是一个官方的ruby脚本。因为在公司生产中使用官方的脚本创建三台虚拟机双实例的Cluster集群，发现最后一台虚拟机始终是自己的6379和6380组成一对主从，即并非三台都是互为主从，有一对主从的是自己的实例。
172.16.1.7
172.16.1.31
172.16.1.61
#yum安装redis(需要epel源)
yum install -y redis
#创建多实例
mkdir -p /data/redis/{6379,6380}/{db,log}
配置文件

[root@web02 6379]# cat /data/redis/6379/redis.conf 
bind 172.16.1.7
protected-mode yes
port 6379
tcp-backlog 511
timeout 0
tcp-keepalive 300
daemonize yes
supervised no
pidfile /data/redis/6379/redis.pid
loglevel notice
logfile /data/redis/6379/log/redis.log
databases 16
save 900 1
save 300 10
save 60 10000
stop-writes-on-bgsave-error yes
rdbcompression yes
rdbchecksum yes
dbfilename dump.rdb
dir /data/redis/6379/db
slave-serve-stale-data yes
slave-read-only yes
repl-diskless-sync no
repl-diskless-sync-delay 5
repl-disable-tcp-nodelay no
slave-priority 100
appendonly no
appendfilename "appendonly.aof"
appendfsync everysec
no-appendfsync-on-rewrite no
auto-aof-rewrite-percentage 100
auto-aof-rewrite-min-size 64mb
aof-load-truncated yes
lua-time-limit 5000
slowlog-log-slower-than 10000
slowlog-max-len 128
latency-monitor-threshold 0
notify-keyspace-events ""
hash-max-ziplist-entries 512
hash-max-ziplist-value 64
list-max-ziplist-size -2
list-compress-depth 0
set-max-intset-entries 512
zset-max-ziplist-entries 128
zset-max-ziplist-value 64
hll-sparse-max-bytes 3000
activerehashing yes
client-output-buffer-limit normal 0 0 0
client-output-buffer-limit slave 256mb 64mb 60
client-output-buffer-limit pubsub 32mb 8mb 60
hz 10
aof-rewrite-incremental-fsync yes

#启动redis实例
redis-server /data/redis/6379/redis.conf
redis-server /data/redis/6380/redis.conf

#配置requirepass认证
#临时配置（不重启配置）

redis-cli -h 172.16.1.7 -p 6379
172.16.1.7:6379> config get requirepass
1) "requirepass"
2) ""
172.16.1.7:6379> config set requirepass 123456
OK
172.16.1.7:6379> config get requirepass
(error) NOAUTH Authentication required.
172.16.1.7:6379> auth 123456
OK
172.16.1.7:6379> config get requirepass
1) "requirepass"
2) "123456"

#永久配置，必须修改配置文件
#手动修改
requirepass "123456"

#直接保存在命令行中的配置
172.16.1.7:6380> config rewrite
#该命令会把配置刷到配置文件中（刷到磁盘永久化）
requirepass "123456"
#刷入redis.conf、nodes.conf配置文件，如果是集群的配置需要使用
#cluster saveconfig命令

创建cluster集群
修改配置文件

#每个cluster节点都必须启动对cluster集群的支持

cluster-enabled yes
cluster-config-file nodes-6379.conf #（会保存在数据目录下）
cluster-node-timeout 15000

#cluster集群中不能有slaveof的定义

slaveof 172.16.1.61 6379
cluster-enabled yes
cluster-config-file nodes-6380.conf
cluster-node-timeout 15000

Reading the configuration file, at line 57
>>> ‘slaveof 172.16.1.61 6379‘
slaveof directive not allowed in cluster mode

#查看redis进程，是以集群模式启动的

[root@web02 ~]# ps -ef|grep redis
root      1193     1  0 00:08 ?        00:00:01 redis-server 172.16.1.7:6379 [cluster]  
root      1212     1  0 00:24 ?        00:00:00 redis-server 172.16.1.7:6380 [cluster] 

#此时集群的状态还是fail，因为还没有把其它的节点都加进来，槽位也还没有分配

redis-cli -h 172.16.1.7 -p 6379 -a 123456
172.16.1.7:6379> cluster info
cluster_state:fail
cluster_slots_assigned:1
cluster_slots_ok:1
cluster_slots_pfail:0
cluster_slots_fail:0
cluster_known_nodes:1
cluster_size:1
cluster_current_epoch:0
cluster_my_epoch:0
cluster_stats_messages_sent:0
cluster_stats_messages_received:0
172.16.1.7:6379> cluster nodes
82424bf0ff964ca5486b7f904b95c155e6dceeb1 :6379 myself,master - 0 0 0 connected 15197

#在任意一个节点上把所有节点加入集群中
#把指定的节点添加到集群中

cluster meet 172.16.1.7 6380
172.16.1.7:6379> cluster nodes
965276bda73d2bce4a44a8fab6e18f676de54f15 172.16.1.61:6380 master - 0 1543768223343 0 connected
56572d4ef3b7e30c30a4956c87d4a6ea0050bef5 172.16.1.31:6379 master - 0 1543768221299 2 connected
673443984a3610fcaa2fcbf3d295f60b2f7f32ae 172.16.1.31:6380 master - 0 1543768222323 3 connected
26d3142fb8766e1cfc01978d01c17e287f4ebd38 172.16.1.61:6379 master - 0 1543768225389 4 connected
85142215ac8c6af9ad0a72fb6ac2a5d2be2608a1 172.16.1.7:6380 master - 0 1543768224368 0 connected
82424bf0ff964ca5486b7f904b95c155e6dceeb1 172.16.1.7:6379 myself,master - 0 0 1 connected 15197
172.16.1.7:6379> cluster info
cluster_state:fail
cluster_slots_assigned:1
cluster_slots_ok:1
cluster_slots_pfail:0
cluster_slots_fail:0
cluster_known_nodes:6
cluster_size:1
cluster_current_epoch:5
cluster_my_epoch:1
cluster_stats_messages_sent:96
cluster_stats_messages_received:9

#在slave节点上指定master节点
#把当前节点设置为node_id的slave，即指定当前节点的master节点，在每个slave节点上执行

[root@web02 ~]#  redis-cli -h 172.16.1.7 -p 6380 -a 123456
172.16.1.7:6380> cluster nodes
85142215ac8c6af9ad0a72fb6ac2a5d2be2608a1 172.16.1.7:6380 myself,master - 0 0 5 connected
26d3142fb8766e1cfc01978d01c17e287f4ebd38 172.16.1.61:6379 master - 0 1543768446773 4 connected
82424bf0ff964ca5486b7f904b95c155e6dceeb1 172.16.1.7:6379 master - 0 1543768444120 1 connected 15197
965276bda73d2bce4a44a8fab6e18f676de54f15 172.16.1.61:6380 master - 0 1543768445753 0 connected
56572d4ef3b7e30c30a4956c87d4a6ea0050bef5 172.16.1.31:6379 master - 0 1543768441669 2 connected
673443984a3610fcaa2fcbf3d295f60b2f7f32ae 172.16.1.31:6380 master - 0 1543768444734 3 connected
172.16.1.7:6380> cluster replicate 26d3142fb8766e1cfc01978d01c17e287f4ebd38
OK

#最终结果

172.16.1.61:6380> cluster nodes
82424bf0ff964ca5486b7f904b95c155e6dceeb1 172.16.1.7:6379 master - 0 1543768678663 1 connected 15197
56572d4ef3b7e30c30a4956c87d4a6ea0050bef5 172.16.1.31:6379 master - 0 1543768682754 2 connected
965276bda73d2bce4a44a8fab6e18f676de54f15 172.16.1.61:6380 myself,slave 56572d4ef3b7e30c30a4956c87d4a6ea0050bef5 0 0 0 connected
85142215ac8c6af9ad0a72fb6ac2a5d2be2608a1 172.16.1.7:6380 slave 26d3142fb8766e1cfc01978d01c17e287f4ebd38 0 1543768683780 5 connected
673443984a3610fcaa2fcbf3d295f60b2f7f32ae 172.16.1.31:6380 slave 82424bf0ff964ca5486b7f904b95c155e6dceeb1 0 1543768679697 3 connected
26d3142fb8766e1cfc01978d01c17e287f4ebd38 172.16.1.61:6379 master - 0 1543768681741 4 connected

分配槽位
#redis3.0.0规定槽位一共有16384个，我们这里是平均分配到三个主节点上。

for i in {0..5460};do redis-cli -h 172.16.1.7 -p 6379 -a 123456 cluster addslots $i >/dev/null;done
for i in {5461..10922};do redis-cli -h 172.16.1.31 -p 6379 -a 123456 cluster addslots $i >/dev/null;done
for i in {10923..16383};do redis-cli -h 172.16.1.61 -p 6379 -a 123456 cluster addslots $i >/dev/null;done

#把集群配置写入磁盘，每个节点都需要执行
cluster saveconfig

#检查集群状态

172.16.1.7:6379> 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:5
cluster_my_epoch:1
cluster_stats_messages_sent:2972
cluster_stats_messages_received:2972
172.16.1.7:6379> cluster nodes
965276bda73d2bce4a44a8fab6e18f676de54f15 172.16.1.61:6380 slave 56572d4ef3b7e30c30a4956c87d4a6ea0050bef5 0 1543769558241 2 connected
56572d4ef3b7e30c30a4956c87d4a6ea0050bef5 172.16.1.31:6379 master - 0 1543769553136 2 connected 5461-10922
673443984a3610fcaa2fcbf3d295f60b2f7f32ae 172.16.1.31:6380 slave 82424bf0ff964ca5486b7f904b95c155e6dceeb1 0 1543769559263 3 connected
26d3142fb8766e1cfc01978d01c17e287f4ebd38 172.16.1.61:6379 master - 0 1543769556196 4 connected 10923-15196 15198-16383
85142215ac8c6af9ad0a72fb6ac2a5d2be2608a1 172.16.1.7:6380 slave 26d3142fb8766e1cfc01978d01c17e287f4ebd38 0 1543769557220 5 connected
82424bf0ff964ca5486b7f904b95c155e6dceeb1 172.16.1.7:6379 myself,master - 0 0 1 connected 0-5460 15197

#配置集群masterauth认证，在集群创建成功之后配置，不然集群会创建失败

172.16.1.7:6379> config set masterauth 123456
OK
172.16.1.7:6379> config get masterauth
1) "masterauth"
2) "123456"
172.16.1.7:6379> config rewrite
OK

纯手动创建Redis Cluster集群，最原始的三主三从创建方法

标签：keep   gre   port   hold   命令行   不重启   delay   priority   databases   

原文地址：http://blog.51cto.com/13691477/2328115