Centos上安装Redis伪集群

港控/mmm° 2022-11-05 07:28 182阅读 0赞

> 环境：Centos 6.8，Redis-4.0.10，VMware虚拟机，redis集群6个节点。  
> 也是走了很多弯路，参考了很多网上资料，下面把搭建过程记录一下。

**首先，由于Centos6.8停止维护，导致yum安装不了工具，所以得切换数据源**

vi /etc/yum.repos.d/CentOS-Base.repo
    清空上面文件的内容，替换为下面的：
    [base]
    name=CentOS-6
    failovermethod=priority
    baseurl=https://vault.centos.org/6.9/os/x86_64/
    gpgcheck=0
    然后，执行
    yum clean all
    yum makecache

**安装gcc和openssl，遇网络不好，命令多执行几次**

yum install gcc -y
    gcc -v
    yum -y install openssl openssl-devel

**下载并安装ruby**

cd /usr/local/
    上传ruby包
    rz
    tar -zxf ruby-2.5.1.tar.gz 
    cd ruby-2.5.1/
    安装
    ./configure --prefix=/usr/local/ruby
    make
    make install
    查看ruby版本
    /usr/local/ruby/bin/ruby -v
    临时加入环境变量
    export RUBY_HOME=/usr/local/ruby
    export PATH=$RUBY_HOME/bin:$PATH
    echo $PATH$

**安装gem**

// 网络原因多执行几次
    gem install redis
    
    [root@node-2 ruby-2.5.1]# gem install redis
    ERROR:  Could not find a valid gem 'redis' (>= 0), here is why:
              Unable to download data from https://rubygems.org/ - Errno::ENETUNREACH: Failed to open TCP connection to api.rubygems.org:443 (Network is unreachable - connect(2) for "api.rubygems.org" port 443) (https://api.rubygems.org/specs.4.8.gz)
    ERROR:  Possible alternatives: redis
    [root@node-2 ruby-2.5.1]# 
    [root@node-2 ruby-2.5.1]# 
    [root@node-2 ruby-2.5.1]# gem install redis
    Fetching: redis-4.2.5.gem (100%)
    Successfully installed redis-4.2.5
    Parsing documentation for redis-4.2.5
    Installing ri documentation for redis-4.2.5
    Done installing documentation for redis after 1 seconds
    1 gem installed

**下载安装Redis**

yum install wget
    wget http://download.redis.io/releases/redis-4.0.10.tar.gz
    tar -xvf redis-4.0.10.tar.gz -C /usr/local/
    cd /usr/local/redis-4.0.10
    make
    创建集群目录，安装6个节点
    mkdir /usr/local/redis-cluster
    make install PREFIX=/usr/local/redis-cluster/redis-1
    make install PREFIX=/usr/local/redis-cluster/redis-2
    make install PREFIX=/usr/local/redis-cluster/redis-3
    make install PREFIX=/usr/local/redis-cluster/redis-4
    make install PREFIX=/usr/local/redis-cluster/redis-5
    make install PREFIX=/usr/local/redis-cluster/redis-6
    拷贝/usr/local/redis-4.0.10目录下的配置文件到6个节点下面
    cp redis.conf /usr/local/redis-cluster/redis-1/bin
    cp redis.conf /usr/local/redis-cluster/redis-2/bin
    cp redis-conf /usr/local/redis-cluster/redis-3/bin
    cp redis-conf /usr/local/redis-cluster/redis-4/bin
    cp redis-conf /usr/local/redis-cluster/redis-5/bin
    cp redis-conf /usr/local/redis-cluster/redis-6/bin

**修改redis配置**

以第一个节点为例，其他节点相同
    cd /usr/local/redis-cluster/redis-1/bin
    vi redis.conf 
    修改以下三处配置，端口分别是7001，7002直到7006
    port 7001
    daemonize yes
    cluster-enabled yes
    启动节点
    ./redis-server redis.conf 
    6个节点都起来后，查看redis进程：
    ps -aux|grep redis

说明：修改每个redis节点的配置文件redis.conf（真正的集群端口是一样的）

**配置集群**

在/usr/local/redis-4.0.10下
    ./src/redis-trib.rb create --replicas 1 127.0.0.1:7001 127.0.0.1:7002 127.0.0.1:7003 127.0.0.1:7004 127.0.0.1:7005 127.0.0.1:7006

**环境变量永久生效**

加入环境变量，方便下次直接从命令行使用
    vi /etc/profile
    source /etc/profile
    环境变量加入以下内容
    export RUBY_HOME=/usr/local/ruby
    export PATH=$RUBY_HOME/bin:$PATH
    export REDIS_HOME=/usr/local/redis-cluster/redis-1
    export PATH=$REDIS_HOME/bin:$PATH

参考资料：1

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1.  Linux-Centos6.8安装redis-4.0.10 官方集群版  
    https://blog.csdn.net/csdnmrliu/article/details/83618124 ↩︎