详解centos下搭建redis集群
必备的工具:
redis-3.0.0.tar
redis-3.0.0.gem (ruby和redis接口)
分析:
首先,集群数需要基数,这里搭建一个简单的redis集群(6个redis实例进行集群)。
在一台服务器上操作,因此仅需要6个不同的端口号即可。分别是:7001、7002、7003、7004、7005、7006。
步骤:
1、上传redis-3.0.0.tar到服务器(自己指定自己的软件目录),解压redis-3.0.0.tar。
2、安装c语言环境(安装centos之后,自带c语言环境)
yum install gcc-c++
3、进入到redis-3.0.0目录
make
4、安装redis到/usr/local/redis目录
make install PREFIX=/usr/local/redis
5、查看是否安装成功(出现bin目录即可)
6、前端启动redis(进入上图的bin目录)
./redis-server(开启)
./redis-cli shutdown(关闭)
7、后端启动
需要将redis解压之后的源码包中(redis-3.0.0目录下)的redis.conf文件拷贝到bin目录下
修改redis.conf文件,将daemonize改为yes先要使用vim redis.conf
使用命令后端启动redis
bin目录下执行 ./redis-server redis.conf
查看是否启动成功
关闭后端启动的方式:
./redis-cli shutdown
以上是单独的redis安装,接下来搭建集群!
安装ruby
yum install ruby
yum install rubygems
将以下文件上传到linux系统
redis-3.0.0.gem (ruby和redis接口)
进入该目录执行:gem install redis-3.0.0.gem
将redis-3.0.0包下src目录中的以下文件拷贝到/usr/local/redis/redis-cluster/
前提:先新建一个redis-cluster目录
搭建集群最少也得需要3台主机,如果每台主机再配置一台从机的话,则最少需要6台机器。
端口设计如下:7001-7006
第一步:复制出一个7001机器
进入/usr/local/redis/目录执行 cp bin ./redis-cluster/7001 –r
第二步:如果存在持久化文件,则删除
rm -rf appendonly.aof dump.rdb
第三步:设置集群参数
第四步:修改端口
第五步:复制出7002-7006机器
给出我桌面系统下的目录结构:
接下来设置一键启动全部redis或者关闭redis群:
首先,新建一个文件,可以用vim打开一个不存在的文件,然后保存就存在了。(上图的start-all.sh和shutdow-all.sh就是我新建的)
start-all.sh:
cd 7001
./redis-server redis.conf
cd ..
cd 7002
./redis-server redis.conf
cd ..
cd 7003
./redis-server redis.conf
cd ..
cd 7004
./redis-server redis.conf
cd ..
cd 7005
./redis-server redis.conf
cd ..
cd 7006
./redis-server redis.conf
cd ..
shutdow-all.sh:
cd 7001
./redis-cli -p 7001 shutdown
cd ..
cd 7002
./redis-cli -p 7002 shutdown
cd ..
cd 7003
./redis-cli -p 7003 shutdown
cd ..
cd 7004
./redis-cli -p 7004 shutdown
cd ..
cd 7005
./redis-cli -p 7005 shutdown
cd ..
cd 7006
./redis-cli -p 7006 shutdown
cd ..
接下来修改那两个文件权限,设置其为可启动的脚本文件
chmod u+x start-all.sh
chmod u+x shutdown-all.sh
接下来用ruby连接这几个集群,进行管理
/redis-trib.rb create --replicas 1 192.168.78.133:7001 192.168.78.133:7002 192.168.78.133:7003 192.168.78.133:7004 192.168.78.133:7005 192.168.78.133:7006
出现:
Connecting to node 192.168.242.137:7001: OK
Connecting to node 192.168.242.137:7002: OK
Connecting to node 192.168.242.137:7003: OK
Connecting to node 192.168.242.137:7004: OK
Connecting to node 192.168.242.137:7005: OK
Connecting to node 192.168.242.137:7006: OK
>>> Performing hash slots allocation on 6 nodes...
Using 3 masters:
192.168.242.137:7001
192.168.242.137:7002
192.168.242.137:7003
Adding replica 192.168.242.137:7004 to 192.168.242.137:7001
Adding replica 192.168.242.137:7005 to 192.168.242.137:7002
Adding replica 192.168.242.137:7006 to 192.168.242.137:7003
M: 8240cd0fe6d6f842faa42b0174fe7c5ddcf7ae24 192.168.242.137:7001
slots:0-5460 (5461 slots) master
M: 4f52a974f64343fd9f1ee0388490b3c0647a4db7 192.168.242.137:7002
slots:5461-10922 (5462 slots) master
M: cb7c5def8f61df2016b38972396a8d1f349208c2 192.168.242.137:7003
slots:10923-16383 (5461 slots) master
S: 66adf006fed43b3b5e499ce2ff1949a756504a16 192.168.242.137:7004
replicates 8240cd0fe6d6f842faa42b0174fe7c5ddcf7ae24
S: cbb0c9bc4b27dd85511a7ef2d01bec90e692793b 192.168.242.137:7005
replicates 4f52a974f64343fd9f1ee0388490b3c0647a4db7
S: a908736eadd1cd06e86fdff8b2749a6f46b38c00 192.168.242.137:7006
replicates cb7c5def8f61df2016b38972396a8d1f349208c2
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 192.168.242.137:7001)
M: 8240cd0fe6d6f842faa42b0174fe7c5ddcf7ae24 192.168.242.137:7001
slots:0-5460 (5461 slots) master
M: 4f52a974f64343fd9f1ee0388490b3c0647a4db7 192.168.242.137:7002
slots:5461-10922 (5462 slots) master
M: cb7c5def8f61df2016b38972396a8d1f349208c2 192.168.242.137:7003
slots:10923-16383 (5461 slots) master
M: 66adf006fed43b3b5e499ce2ff1949a756504a16 192.168.242.137:7004
slots: (0 slots) master
replicates 8240cd0fe6d6f842faa42b0174fe7c5ddcf7ae24
M: cbb0c9bc4b27dd85511a7ef2d01bec90e692793b 192.168.242.137:7005
slots: (0 slots) master
replicates 4f52a974f64343fd9f1ee0388490b3c0647a4db7
M: a908736eadd1cd06e86fdff8b2749a6f46b38c00 192.168.242.137:7006
slots: (0 slots) master
replicates cb7c5def8f61df2016b38972396a8d1f349208c2
[OK] All nodes agree about slots configuration.
>>> Check for open slots...
>>> Check slots coverage...
[OK] All 16384 slots covered.
则代表成功了!
测试一下,进入7001目录执行:./redis-cli -h 192.168.242.137 -p 7001 –c
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