NoSQL之Redis群集配置（实践篇）-创新互联
实验环境
用两台服务器模拟6台服务器（添加网卡）
- IP节点
- 主服务器
- 192.168.144.144
- 192.168.144.159
- 192.168.144.154
- 从服务器
- 192.168.144.141
- 192.168.144.155
- 192.168.144.160
在主服务器与从服务器上分别添加两张网卡
[root@master ruby-2.4.1]# service network restart //重启网卡
[root@master ruby-2.4.1]# systemctl stop firewalld.service //关闭防火墙
[root@master ruby-2.4.1]# setenforce 0[root@slave utils]# service network restart //重启网卡
[root@slave utils]# systemctl stop firewalld.service //关闭防火墙
[root@slave utils]# setenforce 0在两台服务器上都安装Redis
[root@localhost utils]# vim /etc/redis/6379.conf
#bind 127.0.0.1 //注释第70行的监听127地址,已监听所有地址
protected-mode no //开启关闭安全保护
port 6379 //开启端口6379
daemonize yes //开启以独立进程启动
cluster-enabled yes //开启群集功能
cluster-config-file nodes-6379.conf //群集名称文件设置
cluster-node-timeout 15000 //群集超时时间设置
appendonly yes //开启aof持久化
[root@localhost utils]# /etc/init.d/redis_6379 restart //重启服务
Stopping ...
Redis stopped
Starting Redis server...
[root@localhost utils]# cd /var/lib/redis/6379/
[root@localhost 6379]# ls
appendonly.aof dump.rdb nodes-6379.conf //生成aof、rdb和节点文件在主服务器上安装rvm、Ruby控制群集软件
[root@master 6379]# gpg --keyserver hkp://keys.gnupg.net --recv-keys 409B6B1796C275462A1703113804BB82D39DC0E3 //导入key文件
[root@master 6379]# curl -sSL https://get.rvm.io | bash -s stable //安装rvm
[root@localhost utils]# source /etc/profile.d/rvm.sh //执行环境变量
[root@localhost utils]# rvm list known //列出ruby可以安装的版本
[root@localhost utils]# rvm install 2.4.1 //安装2.4.1 版本
[root@localhost utils]# rvm use 2.4.1 //使用rubyruby2.4.1版本
Using /usr/local/rvm/gems/ruby-2.4.1
[root@localhost utils]# ruby -v //查看当前版本
ruby 2.4.1p111 (2017-03-22 revision 58053) [x86_64-linux]
[root@localhost utils]# gem install redis //再次安装Redis在master服务器上创建集群
[root@master ruby-2.4.1]# redis-cli --cluster create 192.168.144.144:6379 192.168.144.159:6379 192.168.144.154:6379 192.168.144.141:6379 192.168.144.155:6379 192.168.144.160:6379 --cluster-replicas 1 //创建群集，每组一主一从
>>> Performing hash slots allocation on 6 nodes...
Master[0] -> Slots 0 - 5460
Master[1] -> Slots 5461 - 10922
Master[2] -> Slots 10923 - 16383
Adding replica 192.168.144.155:6379 to 192.168.144.144:6379
Adding replica 192.168.144.160:6379 to 192.168.144.159:6379
Adding replica 192.168.144.141:6379 to 192.168.144.154:6379
M: d2aef8bb466d29891e051edd1c9c35d760c452e8 192.168.144.144:6379
slots:[0-5460] (5461 slots) master
M: d2aef8bb466d29891e051edd1c9c35d760c452e8 192.168.144.159:6379
slots:[5461-10922] (5462 slots) master
M: d2aef8bb466d29891e051edd1c9c35d760c452e8 192.168.144.154:6379
slots:[10923-16383] (5461 slots) master
S: 984482d225d614b2b2b084f5c54bf197202065a0 192.168.144.141:6379
replicates d2aef8bb466d29891e051edd1c9c35d760c452e8
S: 984482d225d614b2b2b084f5c54bf197202065a0 192.168.144.155:6379
replicates d2aef8bb466d29891e051edd1c9c35d760c452e8
S: 984482d225d614b2b2b084f5c54bf197202065a0 192.168.144.160:6379
replicates d2aef8bb466d29891e051edd1c9c35d760c452e8
Can I set the above configuration? (type 'yes' to accept): yes //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 192.168.144.144:6379)
M: d2aef8bb466d29891e051edd1c9c35d760c452e8 192.168.144.144:6379
slots:[0-16383] (16384 slots) master
1 additional replica(s)
S: 984482d225d614b2b2b084f5c54bf197202065a0 192.168.144.155:6379
slots: (0 slots) slave
replicates d2aef8bb466d29891e051edd1c9c35d760c452e8
[OK] All nodes agree about slots configuration.
>>> Check for open slots...
>>> Check slots coverage...
[OK] All 16384 slots covered.验证群集读写原理
root@master opt]# redis-cli -h 192.168.144.144 -p 6379 //主服务器
1192.168.144.144:6379> set name zhangsan //创建键值对
OK
192.168.144.144:6379> keys *
1) "name"
192.168.144.144:6379> get name
"zhangsan"
192.168.144.144:6379> exit
[root@master opt]# redis-cli -h 192.168.144.155 -p 6379 //从服务器
192.168.144.155:6379> keys * //查看从上也有
1) "name"
192.168.144.155:6379> get name
"zhangsan"
[root@master opt]# redis-cli -h 192.168.144.144 -p 6379
192.168.144.144:6379> hset person age 20 //用hash方式建立键值对
(integer) 1
192.168.144.144:6379> hset person name lisi
(integer) 1
192.168.144.144:6379> keys *
1) "person"
192.168.144.144:6379> hget person age //获取键的值
"20"
192.168.144.144:6379> expire person 5 //设置键的删除时间5s
(integer) 1
192.168.144.144:6379> keys *
1) "person"
192.168.144.144:6379> keys *
(empty list or set)另外有需要云服务器可以了解下创新互联cdcxhl.cn，海内外云服务器15元起步，三天无理由+7*72小时售后在线，公司持有idc许可证，提供“云服务器、裸金属服务器、高防服务器、香港服务器、美国服务器、虚拟主机、免备案服务器”等云主机租用服务以及企业上云的综合解决方案，具有“安全稳定、简单易用、服务可用性高、性价比高”等特点与优势，专为企业上云打造定制，能够满足用户丰富、多元化的应用场景需求。
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