Redis集群环境搭建（实验）-创新互联

环境信息：

集群中至少有奇数个主节点，所以至少三个主节点，

  每个节点至少一个备份节点，所以共6个节点（master和slave各3个）

节点信息： （我这里准备了3台主机，每台主机运行一个master和一个slave）

节点1：192.168.2.100：6379     master

节点2：192.168.2.100：6380     slave

节点3：192.168.2.200：6379     master

节点4：192.168.2.200：6380     slave

节点5：192.168.2.201：6379     master

节点6：192.168.2.201：6380     slave 

master和slave安装路径：

master：/usr/local/redis-3.0.6-6379

slave：/usr/local/redis-3.0.6-6380

master配置文件:

daemonize yes                           //开启后台运行

pidfile /var/run/redis_6379.pid                    //pid文件

port 6379                                        //端口

bind 192.168.2.100                        //默认127.0.0.1，需要改为其他节点可访问的地址

logfile "/usr/local/redis-3.0.6-6379/redis_6379.log"     //log文件路径

dir /usr/local/redis-3.0.6-6379/             //RDB文件路径

appendonly yes                               //开启AOF持久化

cluster-enabled yes                      //开启集群

cluster-config-file nodes-6379.conf        //集群配置文件

cluster-node-timeout 15000          //请求超时，默认15秒

slave配置文件:

daemonize yes

pidfile /var/run/redis_6380.pid

port 6380

bind 192.168.2.100

logfile "/usr/local/redis-3.0.6-6380/redis_6380.log"

dir /usr/local/redis-3.0.6-638/

appendonly yes

cluster-enabled yes

cluster-config-file nodes-6380.conf

cluster-node-timeout 15000

启动redis

# redis-server redis.conf         //6个节点

# ps -ef |grep redis

root      22584      1  0 17:41 ?        00:00:00 redis-server 192.168.2.100:6379 [cluster]

root      22599      1  0 17:41 ?        00:00:00 redis-server 192.168.2.100:6380 [cluster]

root      22606   6650  0 17:41 pts/0    00:00:00 grep --color=auto redis

安装ruby环境：（redis-trib.rb命令，需要在ruby环境中执行）

# yum -y install ruby ruby-devel rubygems rpm-build

# gem install redis

Successfully installed redis-3.2.1

Parsing documentation for redis-3.2.1

1 gem installed

可能会遇到的报错：

      ERROR:  Could not find a valid gem 'redis' (>= 0), here is why:

        Unable to download data from https://rubygems.org/ - no such name (https://rubygems.org/latest_specs.4.8.gz)

  手动下载：https://rubygems.global.ssl.fastly.net/gems/redis-3.2.1.gem

   执行：# gem install -l ./redis-3.2.1.gem

创建集群：

将redis-trib.rb复制到/usr/local/bin目录下

# cp /usr/local/redis-3.0.6-6379/src/redis-trib.rb /usr/local/bin/

# redis-trib.rb create --replicas 1 192.168.2.100:6379 192.168.2.100:6380 192.168.2.200:6379         192.168.2.200:6380 192.168.2.201:6379 192.168.2.201:6380     //创建集群

>>> Creating cluster

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

Using 3 masters:

192.168.2.100:6379     //3个master节点

192.168.2.200:6379

192.168.2.201:6379

Adding replica 192.168.2.200:6380 to 192.168.2.100:6379     //3个slave节点

Adding replica 192.168.2.100:6380 to 192.168.2.200:6379

Adding replica 192.168.2.201:6380 to 192.168.2.201:6379

M: 098e7eb756b6047fde988ab3c0b7189e1724ecf5 192.168.2.100:6379

slots:0-5460 (5461 slots) master         //hash slot [0-5460]

S: 7119dec91b086ca8fe69f7878fa42b1accd75f0f 192.168.2.100:6380

replicates 5844b4272c39456b0fdf73e384ff8c479547de47

M: 5844b4272c39456b0fdf73e384ff8c479547de47 192.168.2.200:6379

slots:5461-10922 (5462 slots) master         //hash slot [5461-10922]

S: 227f51028bbe827f27b4e40ed7a08fcc7d8df969 192.168.2.200:6380

replicates 098e7eb756b6047fde988ab3c0b7189e1724ecf5

M: 3ff3a74f9dc41f8bc635ab845ad76bf77ffb0f69 192.168.2.201:6379

slots:10923-16383 (5461 slots) master         //hash slot [10923-16383]

S: 2faf68564a70372cfc06c1afff197019cc6a39f3 192.168.2.201:6380

replicates 3ff3a74f9dc41f8bc635ab845ad76bf77ffb0f69

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 192.168.2.100:6379)

M: 098e7eb756b6047fde988ab3c0b7189e1724ecf5 192.168.2.100:6379

slots:0-5460 (5461 slots) master

M: 7119dec91b086ca8fe69f7878fa42b1accd75f0f 192.168.2.100:6380

slots: (0 slots) master

replicates 5844b4272c39456b0fdf73e384ff8c479547de47

M: 5844b4272c39456b0fdf73e384ff8c479547de47 192.168.2.200:6379

slots:5461-10922 (5462 slots) master

M: 227f51028bbe827f27b4e40ed7a08fcc7d8df969 192.168.2.200:6380

slots: (0 slots) master

replicates 098e7eb756b6047fde988ab3c0b7189e1724ecf5

M: 3ff3a74f9dc41f8bc635ab845ad76bf77ffb0f69 192.168.2.201:6379

slots:10923-16383 (5461 slots) master

M: 2faf68564a70372cfc06c1afff197019cc6a39f3 192.168.2.201:6380

slots: (0 slots) master

replicates 3ff3a74f9dc41f8bc635ab845ad76bf77ffb0f69

[OK] All nodes agree about slots configuration.      //所有节点都同意槽配置

>>> Check for open slots...          //开始检查槽

>>> Check slots coverage...         //检查槽的覆盖率

[OK] All 16384 slots covered.         //所有的槽（16384个槽）都被覆盖（分配）

到此，redis集群环境部署完成。

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