redis集群搭建步骤[在linux模拟搭建]

怼烎@ 2022-06-13 04:54 184阅读 0赞

## 1.先在linux安装redis,具体可以参考: ##

[Linux下redis的安装以及使用][Linux_redis]  
2.本次搭建需要6台服务器,由于虚拟机不能开太多,所以就在一台虚拟机上搭建6台服务器,是一个为分布式.  
在安装redis完成之后,使用以下命令:  
![这里写图片描述][SouthEast]

cp  -r redis/bin redis-cluster/redis01

然后使用 ll命令查看所有文件

![这里写图片描述][SouthEast 1]

将这个快照文件删除

rm -rf dump.rdb

然后编辑redis.conf文件

vim redis.conf

大概在45行的位置,将端口号改为7001  
![这里写图片描述][SouthEast 2]

大概在633行将cluster-enabled yes打开

![这里写图片描述][SouthEast 3]

然后复制多份redis01文件,分别将redis.conf文件中的端口号改为7002,7003,7004,7005,7006

cp -r redis01/ redis02
    cp -r redis01/ redis03
    cp -r redis01/ redis04
    cp -r redis01/ redis05
    cp -r redis01/ redis06

然后创建一个批处理文件,统一开启所有的服务

vim start-all.sh

里面的内容为:

cd  redis01
    ./redis-server redis.conf
    cd..
    cd  redis02
    ./redis-server redis.conf
    cd..
    cd  redis03
    ./redis-server redis.conf
    cd..
    cd  redis04
    ./redis-server redis.conf
    cd..
    cd  redis05
    ./redis-server redis.conf
    cd..
    cd  redis06
    ./redis-server redis.conf
    cd..

退出保存,然后修改start-all.sh文件的权限,让其可执行

chmod +x start-all.sh

然后就可以执行这个文件了

./start-all.sh

使用下面这个命令查看是否启动

ps aux |grep redis

## 2.集群搭建环境 ##

1、使用ruby脚本搭建集群。需要ruby的运行环境。安装ruby

yum install ruby
    yum install rubygems

然后将这个文件上传到根目录下

![这里写图片描述][SouthEast 4]

在根目录下找到redis-3.0.0.gem文件,然后安装ruby脚本运行使用的包。

gem install redis-3.0.0.gem

然后进入到redis安装目录下的src目录下

cd redis-3.0.0/src

找到.rb文件,将其复制到redis-cluster文件夹下

cp *.rb /usr/local/redis-cluster/

然后使用以下这个命令创建集群 (192.168.254.128为服务器的ip地址,7001-7006位端口号)

./redis-trib.rb create --replicas 1 192.168.254.128:7001 192.168.254.128:7002 192.168.254.128:7003 192.168.254.128:7004 192.168.254.128:7005 192.168.254.128:7006

然后会生成一大串东西,不用管.直到看到这个\[OK\] All 16384 slots covered.证明搭建成功了.

>>> Creating cluster
    Connecting to node 192.168.254.128:7001: OK
    Connecting to node 192.168.254.128:7002: OK
    Connecting to node 192.168.254.128:7003: OK
    Connecting to node 192.168.254.128:7004: OK
    Connecting to node 192.168.254.128:7005: OK
    Connecting to node 192.168.254.128:7006: OK
    >>> Performing hash slots allocation on 6 nodes...
    Using 3 masters:
    192.168.254.128:7001
    192.168.254.128:7002
    192.168.254.128:7003
    Adding replica 192.168.254.128:7004 to 192.168.254.128:7001
    Adding replica 192.168.254.128:7005 to 192.168.254.128:7002
    Adding replica 192.168.254.128:7006 to 192.168.254.128:7003
    M: a0095a091cecdb4e341bf812e63152d1bc77e4dc 192.168.254.128:7001
       slots:0-5460 (5461 slots) master
    M: 5a361790bcfb83892b8440fa39d99ffeb0e6d13e 192.168.254.128:7002
       slots:5461-10922 (5462 slots) master
    M: 48c268389b581505e71bea67d8afa7209c158ec0 192.168.254.128:7003
       slots:10923-16383 (5461 slots) master
    S: efe542c6210cbdc9e757596585012f0c953aebfd 192.168.254.128:7004
       replicates a0095a091cecdb4e341bf812e63152d1bc77e4dc
    S: 53e665f942ef30e63975246ad4bb6d82f1a565e2 192.168.254.128:7005
       replicates 5a361790bcfb83892b8440fa39d99ffeb0e6d13e
    S: eee775e1e2d14ca407d4e88be677b847d2073bf1 192.168.254.128:7006
       replicates 48c268389b581505e71bea67d8afa7209c158ec0
    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 192.168.254.128:7001)
    M: a0095a091cecdb4e341bf812e63152d1bc77e4dc 192.168.254.128:7001
       slots:0-5460 (5461 slots) master
    M: 5a361790bcfb83892b8440fa39d99ffeb0e6d13e 192.168.254.128:7002
       slots:5461-10922 (5462 slots) master
    M: 48c268389b581505e71bea67d8afa7209c158ec0 192.168.254.128:7003
       slots:10923-16383 (5461 slots) master
    M: efe542c6210cbdc9e757596585012f0c953aebfd 192.168.254.128:7004
       slots: (0 slots) master
       replicates a0095a091cecdb4e341bf812e63152d1bc77e4dc
    M: 53e665f942ef30e63975246ad4bb6d82f1a565e2 192.168.254.128:7005
       slots: (0 slots) master
       replicates 5a361790bcfb83892b8440fa39d99ffeb0e6d13e
    M: eee775e1e2d14ca407d4e88be677b847d2073bf1 192.168.254.128:7006
       slots: (0 slots) master
       replicates 48c268389b581505e71bea67d8afa7209c158ec0
    [OK] All nodes agree about slots configuration.
    >>> Check for open slots...
    >>> Check slots coverage...
    [OK] All 16384 slots covered.

## 3.使用redis-cli连接集群 ##

redis01/redis-cli -p 7002 -c

\-c：代表连接的是redis集群

下面这个命令是查看集群的信息:

cluster info

![这里写图片描述][SouthEast 5]

cluster nodes命令查看节点的信息

![这里写图片描述][SouthEast 6]

## 4.使用JedisCluster连接集群 ##

@Test
        public void testJedisCluster() throws Exception {
            // 第一步：使用JedisCluster对象。需要一个Set<HostAndPort>参数。Redis节点的列表。
            Set<HostAndPort> nodes = new HashSet<>();
            nodes.add(new HostAndPort("192.168.254.128", 7001));
            nodes.add(new HostAndPort("192.168.254.128", 7002));
            nodes.add(new HostAndPort("192.168.254.128", 7003));
            nodes.add(new HostAndPort("192.168.254.128", 7004));
            nodes.add(new HostAndPort("192.168.254.128", 7005));
            nodes.add(new HostAndPort("192.168.254.128", 7006));
            JedisCluster jedisCluster = new JedisCluster(nodes);
            // 第二步：直接使用JedisCluster对象操作redis。在系统中单例存在。
            jedisCluster.set("cluster-test01", "1008611");
            String result = jedisCluster.get("cluster-test01");
            // 第三步：打印结果
            System.out.println(result);
            // 第四步：系统关闭前，关闭JedisCluster对象。
            jedisCluster.close();
        }

[Linux_redis]: http://blog.csdn.net/u012661010/article/details/73776066
[SouthEast]: /images/20220613/c6fbc630d45142d596114a28b753148d.png
[SouthEast 1]: /images/20220613/ffacb86df9ab41a7ab63b96c958eafea.png
[SouthEast 2]: /images/20220613/d7460aa0aa294fee96490cb1ad9d9cd3.png
[SouthEast 3]: /images/20220613/68972e6926744260af36fa378756adcb.png
[SouthEast 4]: /images/20220613/b2c75f64da3e4ae28199cc1ba9e0d255.png
[SouthEast 5]: /images/20220613/c9db52a7d58c426e957a575e6836e534.png
[SouthEast 6]: /images/20220613/1896fa979d7e4315844ad1d7f2897d7b.png