redis集群配置加单实例数据迁移到集群

linux下安装redis集群

环境:

OS:Rad Hat Linux As5

Redis 4.0.6

3主3从配置

序号	主	从
1	192.168.56.91:6379	192.168.56.91:7379
2	192.168.56.92:6379	192.168.56.92:7379
3	192.168.56.93:6379	192.168.56.93:7379

1.安装步骤

1.1 下载安装介质

Redis官网下载

根据情况选择下载的版本,我这里下载的版本是apache-hive-2.3.0-bin.tar.gz

1.2 解压并安装

在每台机器上都安装如下步骤安装

[root@pxc01 soft]#tar –zxvf redis-4.0.6.tar.gz

[root@pxc01 soft]# cp -R ./redis-4.0.6 /opt/

[root@pxc01 opt]# cd redis-4.0.6

[root@pxc01 redis-4.0.6]# make

[root@pxc01 redis-4.0.6]# make test

没有问题会提示如下输出:

\o/ All tests passed without errors!

Cleanup: may take some time... OK

make[1]: Leaving directory `/opt/redis-4.0.6/src'

继续安装

[root@pxc01 redis-4.0.6]# cd src

[root@pxc01 src]# make install

1.3 配置文件

1.3.1创建目录

[root@pxc01 opt]# cd redis-4.0.6/

[root@pxc01 redis-4.0.6]# mkdir conf  ##配置文件目录

[root@pxc01 redis-4.0.6]# mkdir log   ##日志文件目录

[root@pxc01 redis-4.0.6]# mkdir run   ##运行的pid文件目录

[root@pxc01 redis-4.0.6]# mkdir rdb   ##快照和AOF文件目录

1.3.2主库配置文件(6379)

daemonize yes

pidfile /opt/redis-4.0.6/run/redis-6379.pid

port 6379

tcp-backlog 511

timeout 0

tcp-keepalive 0

loglevel notice

logfile "/opt/redis-4.0.6/log/redis-6379.log"

databases 16

save 900 1

save 300 10

save 60 10000

stop-writes-on-bgsave-error yes

rdbcompression yes

rdbchecksum yes

dbfilename dump-6379.rdb

dir /opt/redis-4.0.6/rdb

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 yes

appendfilename "redis-6379.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

cluster-enabled yes

cluster-config-file run_6379.conf

cluster-node-timeout 15000

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-entries 512

list-max-ziplist-value 64

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

# Generated by CONFIG REWRITE

#masterauth "richinfo123"

#requirepass "richinfo123"

protected-mode no

1.3.2从库配置文件(7379)

参考主库的配置文件,将6379修改为7379即可

1.4 启动redis

启动每台机器上安装的redis

192.168.56.91:

/opt/redis-4.0.6/src/redis-server /opt/redis-4.0.6/conf/6379.conf

/opt/redis-4.0.6/src/redis-server /opt/redis-4.0.6/conf/7379.conf

192.168.56.92:

/opt/redis-4.0.6/src/redis-server /opt/redis-4.0.6/conf/6379.conf

/opt/redis-4.0.6/src/redis-server /opt/redis-4.0.6/conf/7379.conf

192.168.56.93:

/opt/redis-4.0.6/src/redis-server /opt/redis-4.0.6/conf/6379.conf

/opt/redis-4.0.6/src/redis-server /opt/redis-4.0.6/conf/7379.conf

1.5 创建集群

/opt/redis-4.0.6/src/redis-trib.rb create --replicas 1 192.168.56.91:6379 192.168.56.91:7379 192.168.56.92:6379 192.168.56.92:7379 192.168.56.93:6379 192.168.56.93:7379

选项 --replicas 1 表示为集群中的每个主节点创建一个从节点

[root@pxc01 soft]# /opt/redis-4.0.6/src/redis-trib.rb create --replicas 1 192.168.56.91:6379 192.168.56.91:7379 192.168.56.92:6379 192.168.56.92:7379 192.168.56.93:6379 192.168.56.93:7379

>>> Creating cluster

>>> Performing hash slots allocation on 6 nodes...

Using 3 masters:

192.168.56.91:6379

192.168.56.92:6379

192.168.56.93:6379

Adding replica 192.168.56.92:7379 to 192.168.56.91:6379

Adding replica 192.168.56.91:7379 to 192.168.56.92:6379

Adding replica 192.168.56.93:7379 to 192.168.56.93:6379

M: def4ff42e3c7759538d0273cc64d9a17cdd129b4 192.168.56.91:6379

   slots:0-5460 (5461 slots) master

S: 3b53f11a7aaa49b89df6297062fd4e9581944cfa 192.168.56.91:7379

   replicates 9fb8db06a065d3c73b226b6499de167b0f078c1a

M: 9fb8db06a065d3c73b226b6499de167b0f078c1a 192.168.56.92:6379

   slots:5461-10922 (5462 slots) master

S: f4be871dd3b25f1e1ec2de0df5f281b72bc54af3 192.168.56.92:7379

   replicates def4ff42e3c7759538d0273cc64d9a17cdd129b4

M: 0aedad523787113cdbccc449f7651219ffb336fd 192.168.56.93:6379

   slots:10923-16383 (5461 slots) master

S: a6e3625a31809a7cde6de1371f00b606c24966cc 192.168.56.93:7379

   replicates 0aedad523787113cdbccc449f7651219ffb336fd

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 192.168.56.91:6379)

M: def4ff42e3c7759538d0273cc64d9a17cdd129b4 192.168.56.91:6379

   slots:0-5460 (5461 slots) master

   1 additional replica(s)

M: 9fb8db06a065d3c73b226b6499de167b0f078c1a 192.168.56.92:6379

   slots:5461-10922 (5462 slots) master

   1 additional replica(s)

S: f4be871dd3b25f1e1ec2de0df5f281b72bc54af3 192.168.56.92:7379

   slots: (0 slots) slave

   replicates def4ff42e3c7759538d0273cc64d9a17cdd129b4

S: 3b53f11a7aaa49b89df6297062fd4e9581944cfa 192.168.56.91:7379

   slots: (0 slots) slave

   replicates 9fb8db06a065d3c73b226b6499de167b0f078c1a

M: 0aedad523787113cdbccc449f7651219ffb336fd 192.168.56.93:6379

   slots:10923-16383 (5461 slots) master

   1 additional replica(s)

S: a6e3625a31809a7cde6de1371f00b606c24966cc 192.168.56.93:7379

   slots: (0 slots) slave

   replicates 0aedad523787113cdbccc449f7651219ffb336fd

[OK] All nodes agree about slots configuration.

>>> Check for open slots...

>>> Check slots coverage...

[OK] All 16384 slots covered.

1.6 登录集群

登录

./redis-cli -c -h 192.168.56.91 -p 6379

查看集群信息

192.168.56.91:6379> cluster nodes

9fb8db06a065d3c73b226b6499de167b0f078c1a 192.168.56.92:6379@16379 master - 0 1515653505000 3 connected 5461-10922

f4be871dd3b25f1e1ec2de0df5f281b72bc54af3 192.168.56.92:7379@17379 slave def4ff42e3c7759538d0273cc64d9a17cdd129b4 0 1515653505399 4 connected

3b53f11a7aaa49b89df6297062fd4e9581944cfa 192.168.56.91:7379@17379 slave 9fb8db06a065d3c73b226b6499de167b0f078c1a 0 1515653504392 3 connected

0aedad523787113cdbccc449f7651219ffb336fd 192.168.56.93:6379@16379 master - 0 1515653505000 5 connected 10923-16383

a6e3625a31809a7cde6de1371f00b606c24966cc 192.168.56.93:7379@17379 slave 0aedad523787113cdbccc449f7651219ffb336fd 0 1515653505000 6 connected

def4ff42e3c7759538d0273cc64d9a17cdd129b4 192.168.56.91:6379@16379 myself,master - 0 1515653504000 1 connected 0-5460

1.7 单实例数据迁移到集群

很多通常情况下,单实例的redis运行一段时间后,根据业务需要或是公司要求升级到集群,那么这些数据怎么放入到集群中呢,通常的做法是创建好集群,将所有的slot分配到一个主节点，

把单节点的实例快照或是aof文件拷贝到集群的一个节点上,将所有数据放到主节点的16834个slot里面，然后启动集群另外的节点，将16834个slot里的数据分发到其他的节点上去，最后是为每个主节点创建从库。

1.7.1查看单实例的数据文件

数据库大小,这里是有30万个key,升级到集群后也是要这个数据，说明升级成功。

[root@pxc01 src]# ./redis-cli -h 192.168.56.91 -p 8379

192.168.56.91:8379> dbsize

(integer) 300000

在单实例中假如同时开启了RDB和AOF，还是只要AOF文件就可以了，因为当AOF和RDB同时存在的时候，Redis还是会先加载AOF文件的

192.168.56.91:8379> BGREWRITEAOF

Background append only file rewriting started

然后到数据文件目录查看aof文件

[root@pxc01 rdb]# ls -al

total 15640

drwxr-xr-x.  2 root root       70 Jan 22 17:25 .

drwxrwxr-x. 10 root root     4096 Jan 18 16:40 ..

-rw-r--r--.  1 root root  4469779 Jan 22 16:55 dump-8379.rdb

-rw-r--r--.  1 root root 11533363 Jan 22 17:25 redis-8379.aof

-rw-r--r--.  1 root root      114 Jan 18 16:54 run_8379.conf

1.7.2创建集群

分别启动三个节点的redis

192.168.56.91

/opt/redis-4.0.6/src/redis-server /opt/redis-4.0.6/conf/6379.conf

192.168.56.92

/opt/redis-4.0.6/src/redis-server /opt/redis-4.0.6/conf/6379.conf

192.168.56.93

/opt/redis-4.0.6/src/redis-server /opt/redis-4.0.6/conf/6379.conf

目前集群只有一个节点

[root@pxc01 src]# ./redis-trib.rb check 192.168.56.91:6379

>>> Performing Cluster Check (using node 192.168.56.91:6379)

M: def4ff42e3c7759538d0273cc64d9a17cdd129b4 192.168.56.91:6379

   slots:0-16383 (16384 slots) master

   0 additional replica(s)

[OK] All nodes agree about slots configuration.

>>> Check for open slots...

>>> Check slots coverage...

[OK] All 16384 slots covered.

创建三个节点的集群:

./redis-trib.rb create 192.168.56.91:6379 192.168.56.92:6379 192.168.56.93:6379

[root@pxc01 src]# ./redis-trib.rb create 192.168.56.91:6379 192.168.56.92:6379 192.168.56.93:6379

>>> Creating cluster

[ERR] Node 192.168.56.91:6379 is not empty. Either the node already knows other nodes (check with CLUSTER NODES) or contains some key in database 0.

提示其中一个节点有数据,尝试了执行flushdb不管用,因为这些集群是之前使用的，需要将dump文件,aof文件,运行配置文件进行删除。

再次运行成功

[root@pxc01 src]# ./redis-trib.rb create 192.168.56.91:6379 192.168.56.92:6379 192.168.56.93:6379

>>> Creating cluster

>>> Performing hash slots allocation on 3 nodes...

Using 3 masters:

192.168.56.91:6379

192.168.56.92:6379

192.168.56.93:6379

M: c5f8550043708e27e659a0a5ecdf44264d1b3e41 192.168.56.91:6379

   slots:0-5460 (5461 slots) master

M: 65b17f89c5d6fbadc5185df4ce6896f47ac8cd2b 192.168.56.92:6379

   slots:5461-10922 (5462 slots) master

M: 00fb26359103a3dd7b55b4cfbe3e1984cc2f2387 192.168.56.93:6379

   slots:10923-16383 (5461 slots) master

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 192.168.56.91:6379)

M: c5f8550043708e27e659a0a5ecdf44264d1b3e41 192.168.56.91:6379

   slots:0-5460 (5461 slots) master

   0 additional replica(s)

M: 65b17f89c5d6fbadc5185df4ce6896f47ac8cd2b 192.168.56.92:6379

   slots:5461-10922 (5462 slots) master

   0 additional replica(s)

M: 00fb26359103a3dd7b55b4cfbe3e1984cc2f2387 192.168.56.93:6379

   slots:10923-16383 (5461 slots) master

   0 additional replica(s)

[OK] All nodes agree about slots configuration.

>>> Check for open slots...

>>> Check slots coverage...

[OK] All 16384 slots covered.

1.7.3 将卡槽全部分配一个节点上

将单实例的数据同步到集群上面，需要将所有的卡槽迁移到一个节点上，数据同步到该节点后，再重新分配卡槽到所有的节点。

查看当前集群的卡槽分配情况

[root@pxc01 src]# ./redis-trib.rb check 192.168.56.91:6379

>>> Performing Cluster Check (using node 192.168.56.91:6379)

M: c5f8550043708e27e659a0a5ecdf44264d1b3e41 192.168.56.91:6379

   slots:0-5460 (5461 slots) master

   0 additional replica(s)

M: 65b17f89c5d6fbadc5185df4ce6896f47ac8cd2b 192.168.56.92:6379

   slots:5461-10922 (5462 slots) master

   0 additional replica(s)

M: 00fb26359103a3dd7b55b4cfbe3e1984cc2f2387 192.168.56.93:6379

   slots:10923-16383 (5461 slots) master

   0 additional replica(s)

[OK] All nodes agree about slots configuration.

>>> Check for open slots...

>>> Check slots coverage...

[OK] All 16384 slots covered.

可以看到每个节点的卡槽分配如下：

192.168.56.91:6379 分配的卡槽是: 0-5460

192.168.56.92:6379 分配的卡槽是: 5461-10922

192.168.56.93:6379 分配的卡槽是: 10923-16383

我们现在要将192.168.56.92和192.168.56.93的卡槽迁移到192.168.56.91上面去

先将192.168.56.92的卡槽迁移到192.168.56.91

[root@pxc01 src]# ./redis-trib.rb reshard 192.168.56.92:6379

>>> Performing Cluster Check (using node 192.168.56.92:6379)

M: 65b17f89c5d6fbadc5185df4ce6896f47ac8cd2b 192.168.56.92:6379

   slots:5461-10922 (5462 slots) master

   0 additional replica(s)

M: c5f8550043708e27e659a0a5ecdf44264d1b3e41 192.168.56.91:6379

   slots:0-5460 (5461 slots) master

   0 additional replica(s)

M: 00fb26359103a3dd7b55b4cfbe3e1984cc2f2387 192.168.56.93:6379

   slots:10923-16383 (5461 slots) master

   0 additional replica(s)

[OK] All nodes agree about slots configuration.

>>> Check for open slots...

>>> Check slots coverage...

[OK] All 16384 slots covered.

How many slots do you want to move (from 1 to 16384)? 5462 ##迁移多少卡槽

What is the receiving node ID? c5f8550043708e27e659a0a5ecdf44264d1b3e41 ##接收迁移卡槽的节点id，这里就是192.168.56.91节点对应的id

Please enter all the source node IDs.

  Type 'all' to use all the nodes as source nodes for the hash slots.

  Type 'done' once you entered all the source nodes IDs.

Source node #1:65b17f89c5d6fbadc5185df4ce6896f47ac8cd2b ##移出去的节点id，这里是192.168.56.92节点的id

Source node #2:done

可以看到92节点的卡槽已经迁移到了91节点

[root@pxc01 src]# ./redis-trib.rb check 192.168.56.91:6379

>>> Performing Cluster Check (using node 192.168.56.91:6379)

M: c5f8550043708e27e659a0a5ecdf44264d1b3e41 192.168.56.91:6379

   slots:0-10922 (10923 slots) master

   0 additional replica(s)

M: 65b17f89c5d6fbadc5185df4ce6896f47ac8cd2b 192.168.56.92:6379

   slots: (0 slots) master

   0 additional replica(s)

M: 00fb26359103a3dd7b55b4cfbe3e1984cc2f2387 192.168.56.93:6379

   slots:10923-16383 (5461 slots) master

   0 additional replica(s)

[OK] All nodes agree about slots configuration.

>>> Check for open slots...

>>> Check slots coverage...

[OK] All 16384 slots covered.

下面把192.168.56.93节点的卡槽迁移到192.168.56.91节点

[root@pxc01 src]# ./redis-trib.rb reshard 192.168.56.93:6379

>>> Performing Cluster Check (using node 192.168.56.93:6379)

M: 00fb26359103a3dd7b55b4cfbe3e1984cc2f2387 192.168.56.93:6379

   slots:10923-16383 (5461 slots) master

   0 additional replica(s)

M: 65b17f89c5d6fbadc5185df4ce6896f47ac8cd2b 192.168.56.92:6379

   slots: (0 slots) master

   0 additional replica(s)

M: c5f8550043708e27e659a0a5ecdf44264d1b3e41 192.168.56.91:6379

   slots:0-10922 (10923 slots) master

   0 additional replica(s)

[OK] All nodes agree about slots configuration.

>>> Check for open slots...

>>> Check slots coverage...

[OK] All 16384 slots covered.

How many slots do you want to move (from 1 to 16384)? 5461

What is the receiving node ID? c5f8550043708e27e659a0a5ecdf44264d1b3e41

Please enter all the source node IDs.

  Type 'all' to use all the nodes as source nodes for the hash slots.

  Type 'done' once you entered all the source nodes IDs.

Source node #1:00fb26359103a3dd7b55b4cfbe3e1984cc2f2387

Source node #2:done

可以看到93节点的卡槽也迁移到了91节点上面了,现在所有的卡槽都在节点1上面了

[root@pxc01 src]# ./redis-trib.rb check 192.168.56.91:6379

>>> Performing Cluster Check (using node 192.168.56.91:6379)

M: c5f8550043708e27e659a0a5ecdf44264d1b3e41 192.168.56.91:6379

   slots:0-16383 (16384 slots) master

   0 additional replica(s)

M: 65b17f89c5d6fbadc5185df4ce6896f47ac8cd2b 192.168.56.92:6379

   slots: (0 slots) master

   0 additional replica(s)

M: 00fb26359103a3dd7b55b4cfbe3e1984cc2f2387 192.168.56.93:6379

   slots: (0 slots) master

   0 additional replica(s)

[OK] All nodes agree about slots configuration.

>>> Check for open slots...

>>> Check slots coverage...

[OK] All 16384 slots covered.

1.7.3 单实例数据迁移到集群

先停掉集群，然后把单实例节点的aof文件和dump文件拷贝到192.168.56.91的节点对应的目录下，单实例开启了aof的化只需要aof文件即可，我这里也把dump文件拷贝过去了。

[root@pxc01 rdb]# cp redis-8379.aof /opt/redis-4.0.6/rdb/

[root@pxc01 rdb]# cp dump-8379.rdb /opt/redis-4.0.6/rdb/

进入到192.168.56.91节点进去，将刚才拷贝过来的文件命名为跟节点192.168.56.91配置文件定义的名字一样。

[root@pxc01 rdb]# mv redis-8379.aof redis-6379.aof

mv: overwrite ‘redis-6379.aof’? y

[root@pxc01 rdb]# mv dump-8379.rdb dump-6379.rdb

启动集群登录集群,查看数据情况

[root@pxc01 src]# ./redis-cli -h 192.168.56.91 -c -p 6379

192.168.56.91:6379> dbsize

(integer) 300000

192.168.56.91:6379>

数据跟单实例一样，说明数据已经同步过来.但是现在数据全部在节点1上的，我们需要重新分配卡槽，将数据分布到其他的节点。

1.7.4 重新分配卡槽数据

[root@pxc01 src]# ./redis-trib.rb check 192.168.56.91:6379

>>> Performing Cluster Check (using node 192.168.56.91:6379)

M: c5f8550043708e27e659a0a5ecdf44264d1b3e41 192.168.56.91:6379

   slots:0-16383 (16384 slots) master

   0 additional replica(s)

M: 00fb26359103a3dd7b55b4cfbe3e1984cc2f2387 192.168.56.93:6379

   slots: (0 slots) master

   0 additional replica(s)

M: 65b17f89c5d6fbadc5185df4ce6896f47ac8cd2b 192.168.56.92:6379

   slots: (0 slots) master

   0 additional replica(s)

[OK] All nodes agree about slots configuration.

>>> Check for open slots...

>>> Check slots coverage...

[OK] All 16384 slots covered.

当前的数据卡槽全部在节点1上的，需要分发到其他的节点上面

把节点1:192.168.56.91上的上5462个slots移动节点192.168.56.92上

./redis-trib.rb reshard --from c5f8550043708e27e659a0a5ecdf44264d1b3e41  --to 65b17f89c5d6fbadc5185df4ce6896f47ac8cd2b --slots 5462 --yes 192.168.56.91:6379

把节点1:192.168.56.91上的5461个slots移动节点192.168.56.93上

./redis-trib.rb reshard --from c5f8550043708e27e659a0a5ecdf44264d1b3e41  --to 00fb26359103a3dd7b55b4cfbe3e1984cc2f2387 --slots 5461 --yes 192.168.56.91:6379

[root@pxc01 src]# ./redis-trib.rb check 192.168.56.91:6379

>>> Performing Cluster Check (using node 192.168.56.91:6379)

M: c5f8550043708e27e659a0a5ecdf44264d1b3e41 192.168.56.91:6379

   slots:10923-16383 (5461 slots) master

   0 additional replica(s)

M: 00fb26359103a3dd7b55b4cfbe3e1984cc2f2387 192.168.56.93:6379

   slots:5462-10922 (5461 slots) master

   0 additional replica(s)

M: 65b17f89c5d6fbadc5185df4ce6896f47ac8cd2b 192.168.56.92:6379

   slots:0-5461 (5462 slots) master

   0 additional replica(s)

[OK] All nodes agree about slots configuration.

>>> Check for open slots...

>>> Check slots coverage...

[OK] All 16384 slots covered.

可以看到已经将部分卡槽迁移到另外的2个节点了。

1.7.5 建立主从

每个主节点数据分布好之后，我们为每个主库创建一个从库，构成集群主从关系。

首先要启动每个从节点,接着为每个主节点创建从库.

启动从库1,让其成为主库1的备份节点

./redis-trib.rb add-node --slave --master-id c5f8550043708e27e659a0a5ecdf44264d1b3e41 192.168.56.91:7379 192.168.56.91:6379

[root@pxc01 src]# ./redis-trib.rb check 192.168.56.91:6379

>>> Performing Cluster Check (using node 192.168.56.91:6379)

M: c5f8550043708e27e659a0a5ecdf44264d1b3e41 192.168.56.91:6379

   slots:10923-16383 (5461 slots) master

   1 additional replica(s)

S: d11187b7bc773abf09917896d1b3b9964da27252 192.168.56.91:7379

   slots: (0 slots) slave

   replicates c5f8550043708e27e659a0a5ecdf44264d1b3e41

M: 00fb26359103a3dd7b55b4cfbe3e1984cc2f2387 192.168.56.93:6379

   slots:5462-10922 (5461 slots) master

   0 additional replica(s)

M: 65b17f89c5d6fbadc5185df4ce6896f47ac8cd2b 192.168.56.92:6379

   slots:0-5461 (5462 slots) master

   0 additional replica(s)

[OK] All nodes agree about slots configuration.

>>> Check for open slots...

>>> Check slots coverage...

[OK] All 16384 slots covered.

可以看到从库1已经加入集群并成为主库1的备份节点，使用同样的方法，把另外2个从库加入到集群，并分别设置对应主库的从节点,全部加入完成后，查看集群情况:

>>> Performing Cluster Check (using node 192.168.56.91:6379)

M: c5f8550043708e27e659a0a5ecdf44264d1b3e41 192.168.56.91:6379

   slots:10923-16383 (5461 slots) master

   1 additional replica(s)

S: 749ef9f210b3f841c436576f7c28d2f419414a54 192.168.56.92:7379

   slots: (0 slots) slave

   replicates 65b17f89c5d6fbadc5185df4ce6896f47ac8cd2b

S: d11187b7bc773abf09917896d1b3b9964da27252 192.168.56.91:7379

   slots: (0 slots) slave

   replicates c5f8550043708e27e659a0a5ecdf44264d1b3e41

M: 00fb26359103a3dd7b55b4cfbe3e1984cc2f2387 192.168.56.93:6379

   slots:5462-10922 (5461 slots) master

   1 additional replica(s)

S: dbd8174b22a59d0c97cc7213c5c4998c47126f8e 192.168.56.93:7379

   slots: (0 slots) slave

   replicates 00fb26359103a3dd7b55b4cfbe3e1984cc2f2387

M: 65b17f89c5d6fbadc5185df4ce6896f47ac8cd2b 192.168.56.92:6379

   slots:0-5461 (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

1.7.5 验证数据一致性

我们从单实例同步过来的dbsize=300000

我们现在登录个节点查看数据分布情况

[root@pxc01 src]# ./redis-cli -h 192.168.56.91 -c -p 6379

192.168.56.91:6379> dbsize

(integer) 100001

192.168.56.91:6379> exit

[root@pxc01 src]# ./redis-cli -h 192.168.56.92 -c -p 6379

192.168.56.92:6379> dbsize

(integer) 100072

192.168.56.92:6379> exit

[root@pxc01 src]# ./redis-cli -h 192.168.56.93 -c -p 6379

192.168.56.93:6379> dbsize

(integer) 99927

100001+100072+99927=300000,说明数据成功转移到各节点。

1.8 安装过程遇到的问题

1.4.1需要安装tcl

[root@pxc02 redis-4.0.6]# make test

cd src && make test

make[1]: Entering directory `/opt/redis-4.0.6/src'

    CC Makefile.dep

make[1]: Leaving directory `/opt/redis-4.0.6/src'

make[1]: Entering directory `/opt/redis-4.0.6/src'

You need tcl 8.5 or newer in order to run the Redis test

make[1]: *** [test] Error 1

make[1]: Leaving directory `/opt/redis-4.0.6/src'

make: *** [test] Error 2

安装tcl包:

[root@pxc02 Packages]# rpm -ivh tcl-8.5.13-8.el7.x86_64.rpm

[root@pxc02 Packages]# rpm -ivh tcl-pgtcl-2.0.0-5.el7.x86_64.rpm

1.4.2 修改replication-2.tcl

错误信息:

"bg_complex_data [lindex $argv 0] [lindex $argv 1] [lindex $argv 2] [lindex $argv 3]"

    (file "tests/helpers/bg_complex_data.tcl" line 10)

Killing still running Redis server 21198

make: *** [test] Error 1

解决办法:

[root@localhost src]# vim ../tests/integration/replication-2.tcl

start_server {tags {"repl"}} {

    start_server {} {

        test {First server should have role slave after SLAVEOF} {

            r -1 slaveof [srv 0 host] [srv 0 port]

            after 10000    #修改成10000

            s -1 role

1.4.2 安装ruby

[root@pxc03 src]# /opt/redis-4.0.6/src/redis-trib.rb create --replicas 1 192.168.56.91:6379 192.168.56.91:7379 192.168.56.92:6379 192.168.56.92:7379 192.168.56.93:6379 192.168.56.93:7379

/usr/bin/env: ruby: No such file or directory

1.4.2 gem install redis

[root@pxc01 yum.repos.d]# /opt/redis-4.0.6/src/redis-trib.rb create --replicas 1 192.168.56.91:6379 192.168.56.91:7379 192.168.56.92:6379 192.168.56.92:7379 192.168.56.93:6379 192.168.56.93:7379

/usr/share/rubygems/rubygems/core_ext/kernel_require.rb:55:in `require': cannot load such file -- redis (LoadError)

        from /usr/share/rubygems/rubygems/core_ext/kernel_require.rb:55:in `require'

        from /opt/redis-4.0.6/src/redis-trib.rb:25:in `

'

下载redis-4.0.0.gem,然后安装

[root@pxc01 soft]# gem install -l redis-4.0.0.gem

ERROR:  Error installing redis-4.0.0.gem:

        redis requires Ruby version >= 2.2.2.

查看当前系统的ruby版本

[root@pxc01 soft]# rpm -qa|grep ruby

rubygems-2.0.14.1-29.el7.noarch

rubygem-json-1.7.7-29.el7.x86_64

ruby-irb-2.0.0.648-29.el7.noarch

rubygem-io-console-0.4.2-29.el7.x86_64

ruby-libs-2.0.0.648-29.el7.x86_64

ruby-2.0.0.648-29.el7.x86_64

rubygem-rdoc-4.0.0-29.el7.noarch

rubygem-bigdecimal-1.2.0-29.el7.x86_64

rubygem-psych-2.0.0-29.el7.x86_64

下载个3.3.2的版本进行安装

[root@pxc01 soft]# gem install -l redis-3.3.2.gem

Successfully installed redis-3.3.2

Parsing documentation for redis-3.3.2

Installing ri documentation for redis-3.3.2

1 gem installed