Redis3.0.5 cluster--安装

基于大神指点配置：http://blog.csdn.net/xu470438000/article/details/42971091，加上自己遇到问题整理如下：

系统版本：先 mac ox x 10.11，安装redis3.0，搭建一下集群环境，后遇到问题换到ubuntu 15.04，需要 ruby 环境。

最多就能启动2个实例，正在解决中，问题很奇怪，最后把cluster关闭，挨个各自启动一下，没问题，改回来之后重启下就成功启动。还有就是把cluster-config-file node-端口号.conf 由于cluster-config-file nodes.conf 相同的名称，顺序启动第三个节点时候文件会分配到7002文件夹内，重名！我的文件结构如下：

./src/redis-trib.rb create --replicas 1 127.0.0.1:7001 127.0.0.1:7002 127.0.0.1:7003 127.0.0.1:7004 127.0.0.1:7005 127.0.0.1:7006

root@java:/usr/local/redis-3.0.5# ./src/redis-trib.rb create --replicas 1 127.0.0.1:7001 127.0.0.1:7005

/usr/lib/ruby/2.1.0/rubygems/core_ext/kernel_require.rb:55:in `require': cannot load such file -- redis (LoadError)

安装 ruby 和 redis 接口，ruby 安装 redis client 包。

MacBook-Pro:src java$ gem install redis
Fetching: redis-3.2.2.gem (100%)
Successfully installed redis-3.2.2
Parsing documentation for redis-3.2.2
Installing ri documentation for redis-3.2.2
1 gem installed

准备完毕

root@java:/usr/local/redis-3.0.5# ./src/redis-trib.rb create --replicas 1 127.0.0.1:7001 127.0.0.1:7005

>>> Creating cluster

Connecting to node 127.0.0.1:7001: OK

Connecting to node 127.0.0.1:7005: OK

*** ERROR: Invalid configuration for cluster creation.

*** Redis Cluster requires at least 3 master nodes.

*** This is not possible with 2 nodes and 1 replicas per node.

*** At least 6 nodes are required.

将各个节点数据flush掉，否则报错：

[ERR] Node 127.0.0.1:7002 is not empty. Either the node already knows other nodes (check with CLUSTER NODES) or contains some key in database 0.

将节点加入到集群，又特么报错了：

root@java:/usr/local/redis-3.0.5/src# ./redis-trib.rb create --replicas 1 127.0.0.1:7001 127.0.0.1:7002 127.0.0.1:7003 127.0.0.1:7004 127.0.0.1:7005 127.0.0.1:7006

>>> Creating cluster

Connecting to node 127.0.0.1:7001: OK

Connecting to node 127.0.0.1:7002: OK

Connecting to node 127.0.0.1:7003: OK

Connecting to node 127.0.0.1:7004: OK

Connecting to node 127.0.0.1:7005: OK

Connecting to node 127.0.0.1:7006: OK

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

Using 3 masters:

127.0.0.1:7001

127.0.0.1:7002

127.0.0.1:7003

Adding replica 127.0.0.1:7004 to 127.0.0.1:7001

Adding replica 127.0.0.1:7005 to 127.0.0.1:7002

Adding replica 127.0.0.1:7006 to 127.0.0.1:7003

M: c04c15188ccc0dbca000c595b7754a8fe2794158 127.0.0.1:7001

slots:0-5460,5798 (5462 slots) master

M: a5ef5518546ae0850b3ec7a465996fef7ed6c5fb 127.0.0.1:7002

slots:5461-10922 (5462 slots) master

M: 7ada5979528e2b636926f6e929eabb4706a895e5 127.0.0.1:7003

slots:5798,10923-16383 (5462 slots) master

S: 7fbd159aeb4bd35f06b9a8dea6bb3a80676c5bf6 127.0.0.1:7004

replicates c04c15188ccc0dbca000c595b7754a8fe2794158

S: 462f9070964d91eb5d92caac00634c69fb26ff69 127.0.0.1:7005

replicates a5ef5518546ae0850b3ec7a465996fef7ed6c5fb

S: c229fb38c95e1bdc530ebc21320584d33443fee0 127.0.0.1:7006

replicates 7ada5979528e2b636926f6e929eabb4706a895e5

Can I set the above configuration? (type 'yes' to accept): yes

/var/lib/gems/2.1.0/gems/redis-3.2.2/lib/redis/client.rb:114:in `call': ERR Slot 5798 is already busy (Redis::CommandError)

from /var/lib/gems/2.1.0/gems/redis-3.2.2/lib/redis.rb:2646:in `block in method_missing'

from /var/lib/gems/2.1.0/gems/redis-3.2.2/lib/redis.rb:57:in `block in synchronize'

from /usr/lib/ruby/2.1.0/monitor.rb:211:in `mon_synchronize'

from /var/lib/gems/2.1.0/gems/redis-3.2.2/lib/redis.rb:57:in `synchronize'

from /var/lib/gems/2.1.0/gems/redis-3.2.2/lib/redis.rb:2645:in `method_missing'

from ./redis-trib.rb:205:in `flush_node_config'

from ./redis-trib.rb:667:in `block in flush_nodes_config'

from ./redis-trib.rb:666:in `each'

from ./redis-trib.rb:666:in `flush_nodes_config'

from ./redis-trib.rb:1007:in `create_cluster_cmd'

from ./redis-trib.rb:1388:in `

root@jiangqq:/usr/local/redis-3.0.5/src#

删除实例rdb、aof文件，重启 redis，再来一次：

root@keung:/usr/local/redis-3.0.5# src/redis-trib.rb create --replicas 1 127.0.0.1:7001 127.0.0.1:7002 127.0.0.1:7003 127.0.0.1:7004 127.0.0.1:7005 127.0.0.1:7006

mkreleasehdr.sh redis-benchmark redis-check-aof redis-check-dump redis-cli redis-sentinel redis-server redis-trib.rb

root@jiangqq:/usr/local/redis-3.0.5# src/redis-trib.rb create --replicas 1 127.0.0.1:7001 127.0.0.1:7002 127.0.0.1:7003 127.0.0.1:7004 127.0.0.1:7005 127.0.0.1:7006

>>> Creating cluster

Connecting to node 127.0.0.1:7001: OK

Connecting to node 127.0.0.1:7002: OK

Connecting to node 127.0.0.1:7003: OK

Connecting to node 127.0.0.1:7004: OK

Connecting to node 127.0.0.1:7005: OK

Connecting to node 127.0.0.1:7006: OK

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

Using 3 masters:

127.0.0.1:7001

127.0.0.1:7002

127.0.0.1:7003

Adding replica 127.0.0.1:7004 to 127.0.0.1:7001

Adding replica 127.0.0.1:7005 to 127.0.0.1:7002

Adding replica 127.0.0.1:7006 to 127.0.0.1:7003

M: 1fcf7efcab49091e6dc86b64bf246c48dcd3683d 127.0.0.1:7001

slots:0-5460 (5461 slots) master

M: 00d3325115ce9a8f017c1f2ea51fc9e393954e22 127.0.0.1:7002

slots:5461-10922 (5462 slots) master

M: 6618c2d54c8090f1c4451c96577498966475105c 127.0.0.1:7003

slots:10923-16383 (5461 slots) master

S: 5905617db2ca7e08aabde9989669caf6686489d9 127.0.0.1:7004

replicates 1fcf7efcab49091e6dc86b64bf246c48dcd3683d

S: 444d9fe91c59f2df00f9805478ac35af2ed01e60 127.0.0.1:7005

replicates 00d3325115ce9a8f017c1f2ea51fc9e393954e22

S: 01126c7db11891ef0a939a565d33900fe9f12077 127.0.0.1:7006

replicates 6618c2d54c8090f1c4451c96577498966475105c

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 127.0.0.1:7001)

M: 1fcf7efcab49091e6dc86b64bf246c48dcd3683d 127.0.0.1:7001

slots:0-5460 (5461 slots) master

M: 00d3325115ce9a8f017c1f2ea51fc9e393954e22 127.0.0.1:7002

slots:5461-10922 (5462 slots) master

M: 6618c2d54c8090f1c4451c96577498966475105c 127.0.0.1:7003

slots:10923-16383 (5461 slots) master

M: 5905617db2ca7e08aabde9989669caf6686489d9 127.0.0.1:7004

slots: (0 slots) master

replicates 1fcf7efcab49091e6dc86b64bf246c48dcd3683d

M: 444d9fe91c59f2df00f9805478ac35af2ed01e60 127.0.0.1:7005

slots: (0 slots) master

replicates 00d3325115ce9a8f017c1f2ea51fc9e393954e22

M: 01126c7db11891ef0a939a565d33900fe9f12077 127.0.0.1:7006

slots: (0 slots) master

replicates 6618c2d54c8090f1c4451c96577498966475105c

[OK] All nodes agree about slots configuration.

>>> Check for open slots...

>>> Check slots coverage...

[OK] All 16384 slots covered.

root@jiangqq:/usr/local/redis-3.0.5#

root@jiangqq:/usr/local/redis-3.0.5# redis-cli -p 7001

127.0.0.1:7001> set name 'a'

(error) MOVED 5798 127.0.0.1:7002

127.0.0.1:7001> set name 'a'

(error) MOVED 5798 127.0.0.1:7002

127.0.0.1:7001> keys *

(empty list or set)

127.0.0.1:7001>

root@jiangqq:/usr/local/redis-3.0.5# redis-cli -p 7002

127.0.0.1:7002> set name 'a'

127.0.0.1:7001> cluster info

cluster_state:ok

cluster_slots_assigned:16384

cluster_slots_ok:16384

cluster_slots_pfail:0

cluster_slots_fail:0

cluster_known_nodes:6

cluster_size:3

cluster_current_epoch:6

cluster_my_epoch:2

cluster_stats_messages_sent:3353

cluster_stats_messages_received:3353

127.0.0.1:7001>

OK，终于启动了，用了几乎一个工作日，搭建起来了，有如下几个问题，

1、客户端怎么连接集群呢？是把所有的IP、端口都连接起来嘛？如果是，set的时候怎么知道把他set到哪个机器了，如果只需要连接一台，如果当前连接网线掉了怎么办？lvs+keepalived？

2、集群架构也不是太理解，再想想还有什么问题。

Redis3.0.5 cluster--安装

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