redis5集群搭建

装了三个redhat7，每个分配2G内存，关闭了防火墙和selinux 而且配置的网络环境为nat转发，并且改了静态ip三台的ip分别为：192.168.101.128，192.168.101.129，192.168.101.127保证三台机子可以互相ping通，并且跟宿主机可以ping通

三台虚拟机，三主三从，每个机子部署一个主master还有一个备的slaver，然后把三个机子整合为一个cluster

一.安装redis

1.下载redis

打开redis官网 https://redis.io/ 下载最新版

1.cd /usr/local/src

2. wget http://download.redis.io/releases/redis-5.0.2.tar.gz

2.编译安装redis

需要先安装gcc编译器

echo "/dev/cdrom /mnt/ iso9660 defaults 0 0" >> /etc/fstab

　mount -av

yum install gcc-c++ -y

yum -y install gcc

解压redis包然后编译安装

tar -zxvf redis-5.0.2.tar.gz

cd redis-5.0.2

make && make install

同样的操作去给另外两条机器安装redis

二. 创建节点

1. 我选择在/usr/local下创建了一个redis-cluster文件夹用于存放redis节点的配置文件（redis.conf）

mkdir /usr/local/redis-cluster

cd /usr/local/redis-cluster

mkdir 9000 9001

cp /usr/local/redis-5.0.2/redis.conf /usr/local/redis-cluster/9000

cp /usr/local/redis-5.0.2/redis.conf /usr/local/redis-cluster/9001

2.修改配置文件(9000和9001文件夹下各一个配置文件都需要修改，9001参照9000的配置只需要把端口改了)

daemonize yes //守护线程，后台运行redis

pidfile /var/run/redis_9000.pid

port 9000 //每个节点的端口号

cluster-enabled yes //开启集群模式

cluster-config-file nodes_9000.conf //集群节点的配置

cluster-node-timeout 5000 //节点请求超时时间

appendonly yes //aof日志每一个操作都记录模式

bind 0.0.0.0 //开启网络，保证其他网络可以访问该机子

三. 分发该配置到另外两台机器

我选择了使用scp命令进行文件的分发。。真的很好用。

scp -r /usr/local/redis-cluster 192.168.153.129:/usr/local

然后输入root密码。

scp -r /usr/local/redis-cluster 192.168.153.130:/usr/local

然后输入root密码。

四. 启动每台机器上的两个节点

 cd /usr/loacl/src/

 

redis-server /usr/local/redis-cluster/9000/redis.conf

 

redis-server /usr/local/redis-cluster/9001/redis.conf

同样的操作去另外两条机器启动剩下的四个节点。

五. 创建集群

redis5.0真心舒服集群创建方式改为了C编写的redis-cli创建，不用再安装麻烦的ruby（上午用的redis 4.0安装，太麻烦。需要安装一些库，而且redhat7 yum -y install ruby 默认安装的ruby版本是2.0 而gem install redis 需要的ruby最低2.2上网看了些资料真的懒得折腾了 5.0 !!!舒服！！！）了。

cd /usr/local/src/redis-5.0.2

redis-cli --cluster create 192.168.153.128:9000  192.168.153.129:9000 192.168.153.130:9000 192.168.153.128:9001  192.168.153.129:9001 192.168.153.130:9001 --cluster-replicas 1

//创建集群，--cluster-replicas 1 指定从库数量1

//创建顺序三个主，三个从，前面三个是主后面三个是从

启动后，可看到成功信息，如下：

[root@hadoop01 local]# redis-cli --cluster create 192.168.153.128:9000 192.168.153.129:9000 192.168.153.130:9000 192.168.153.128:9001 192.168.153.129:9001 192.168.153.130:9001 --cluster-replicas 1

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

Master[0] -> Slots 0 - 5460

Master[1] -> Slots 5461 - 10922

Master[2] -> Slots 10923 - 16383

Adding replica 192.168.153.129:9001 to 192.168.153.128:9000

Adding replica 192.168.153.128:9001 to 192.168.153.129:9000

Adding replica 192.168.153.130:9001 to 192.168.153.130:9000

>>> Trying to optimize slaves allocation for anti-affinity

[OK] Perfect anti-affinity obtained!

M: 274618a39848cd3e7c8fb0476703ac663eb4f098 192.168.153.128:9000

   slots:[0-5460] (5461 slots) master

M: b6eef47101d34c6f6905ea65467186051374f38d 192.168.153.129:9000

   slots:[5461-10922] (5462 slots) master

M: 76123e02af1a85ce730e12431a8fdc8aa28a0b2c 192.168.153.130:9000

   slots:[10923-16383] (5461 slots) master

S: 90734168c2e428ad1cfd70ce2b9506708b6f548b 192.168.153.128:9001

   replicates b6eef47101d34c6f6905ea65467186051374f38d

S: 3c17d33fd0270a711e3e00c1d95f4aa16ec2cc88 192.168.153.129:9001

   replicates 76123e02af1a85ce730e12431a8fdc8aa28a0b2c

S: 067da7a5d5e6b63b5617b18cf389ffa153b48c09 192.168.153.130:9001

   replicates 274618a39848cd3e7c8fb0476703ac663eb4f098

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 192.168.153.128:9000)

M: 274618a39848cd3e7c8fb0476703ac663eb4f098 192.168.153.128:9000

   slots:[0-5460] (5461 slots) master

   1 additional replica(s)

M: 76123e02af1a85ce730e12431a8fdc8aa28a0b2c 192.168.153.130:9000

   slots:[10923-16383] (5461 slots) master

   1 additional replica(s)

S: 3c17d33fd0270a711e3e00c1d95f4aa16ec2cc88 192.168.153.129:9001

   slots: (0 slots) slave

   replicates 76123e02af1a85ce730e12431a8fdc8aa28a0b2c

M: b6eef47101d34c6f6905ea65467186051374f38d 192.168.153.129:9000

   slots:[5461-10922] (5462 slots) master

   1 additional replica(s)

S: 067da7a5d5e6b63b5617b18cf389ffa153b48c09 192.168.153.130:9001

   slots: (0 slots) slave

   replicates 274618a39848cd3e7c8fb0476703ac663eb4f098

S: 90734168c2e428ad1cfd70ce2b9506708b6f548b 192.168.153.128:9001

   slots: (0 slots) slave

   replicates b6eef47101d34c6f6905ea65467186051374f38d

[OK] All nodes agree about slots configuration.

>>> Check for open slots...

>>> Check slots coverage...

[OK] All 16384 slots covered.

redis集群搭建完毕。

(创建集群的时候，报了一个错，到129没有route，原因是忘了关129的防火墙，执行iptables -F setenforce 0.后可正常创建)

至此。。redis集群搭建完毕了。。然后就是jedis来连接redis集群了

开发我不会，暂时先放一放

posted on 2019-07-27 17:05 小舟868 阅读(135) 评论(0) 收藏举报

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