安装redis3.2集群出现的一些问题及解决方法

安装系统是在centOS上面时行的。有不足之处还记指正。

系统版本centOS6.5.

redis集群配置如下：

           节点1

=============================================

主192.168.135.128 ：1000

/usr/local/redis-cluster-test/cluster1/master

从  192.168.135.128 ：1001

/usr/local/redis-cluster-test/cluster1/slave

节点1主配置

pidfile /usr/local/redis-cluster-test/cluster1/master/redis_1000.pid

logfile /usr/local/redis-cluster-test/cluster1/master/redist-1000.log

port 1000

bind 192.168.135.128

appendonly yes

daemonize yes

dir /usr/local/redis-cluster-test/cluster1/master/
cluster-enabled yes

cluster-config-file nodes-1000.conf

节点1从配置

pidfile /usr/local/redis-cluster-test/cluster1/slave/redis_1001.pid

logfile /usr/local/redis-cluster-test/cluster1/salve/redist-1001.log

port 1001

bind 192.168.135.128

appendonly yes

daemonize yes

dir /usr/local/redis-cluster-test/cluster1/slave/

cluster-enabled yes

cluster-config-file nodes-1001.conf

          节点2

=============================================

节点2主192.168.135.128 ：2000

 /usr/local/redis-cluster-test/cluster2/master

 /usr/local/redis-cluster-test/cluster2/slave   

       

pidfile /usr/local/redis-cluster-test/cluster2/slave/redis_2001.pid

logfile /usr/local/redis-cluster-test/cluster2/salve/redist-2001.log

port 2001

bind 192.168.135.128

appendonly yes

daemonize yes
cluster-enabled yes

dir /usr/local/redis-cluster-test/cluster1/slave/
cluster-config-file nodes-2000.conf

节点2从  192.168.135.128 ：2001

/usr/local/redis-cluster-test/cluster2/slave 
         
pidfile /usr/local/redis-cluster-test/cluster2/slave/redis_2001.pid
logfile /usr/local/redis-cluster-test/cluster2/salve/redist-2001.log
port 2001
bind 192.168.135.128
appendonly yes
daemonize yes
dir /usr/local/redis-cluster-test/cluster1/slave/

cluster-enabled yes

cluster-config-file nodes-2001.conf

           节点3

=============================================

节点3主192.168.135.128 ：3000

/usr/local/redis-cluster-test/cluster3/master

/usr/local/redis-cluster-test/cluster2/slave          

pidfile /usr/local/redis-cluster-test/cluster3/slave/redis_3000.pid

logfile /usr/local/redis-cluster-test/cluster3/salve/redist-3000.log

port 3000

bind 192.168.135.128

appendonly yes

daemonize yes
cluster-enabled yes

dir /usr/local/redis-cluster-test/cluster1/slave/
cluster-config-file nodes-3000.conf

节点3从  192.168.135.128 ：3001

redis.conf    /usr/local/redis-cluster-test/cluster3/slave

pidfile    /usr/local/redis-cluster-test/cluster3/slave/redis_3001.pid

logfile    /usr/local/redis-cluster-test/cluster3/salve/redist-3001.log

port   3001

bind 192.168.135.128

appendonly yes

daemonize yes

dir /usr/local/redis-cluster-test/cluster1/slave/

cluster-enabled yes

cluster-config-file nodes-3001.conf

以上配置在从中设置少了一个cluster-node-timeout 15000这个配置可以自行设置。

下面就是主题了，搞下集群。

也有一些野路子配置集群的，在网上看到，试过了，也可以用，但是在删除和增加节点时不是那么灵活。官方文档上推荐使用ruby，而且redis3.2里面内置了redis-trib.rb文件，所以在centOS上面安装ruby就可以了。可是，我是纠结了一下午才搞定了ruby的运行环境，可能是我安装的centos太纯净了，有些依赖包没有找到的问题。

一些问题如下:

问题1：

   执行命令：./redis-trib.rb 

/usr/local/lib/ruby/2.0.0/rubygems/core_ext/kernel_require.rb:45:in `require': cannot load such file -- redis (LoadError)
from /usr/local/lib/ruby/2.0.0/rubygems/core_ext/kernel_require.rb:45:in `require'
from ./redis-trib.rb:25:in `<main>'
解决方法：下载安装rubygem 进入解压包中.configure    make && make install 

     此时就可以运行gem intall redis 命令，来安装ruby执行redis的相关依赖。

问题2：

gem install redis 命令出现的问题

ERROR:  Loading command: install (LoadError)
cannot load such file -- openssl

ERROR:  While executing gem ... (NoMethodError)

    undefined method `invoke_with_build_args' for nil:NilClass手动安装opensll,此问题解决。

问题3：

接着执行命令：gem install redis

ERROR:  Loading command: install (LoadError)
cannot load such file -- zlib
手动安装zlib包解决（这个可能是系统太纯净，没有些包的问题）。安装过程不多说，手动下载安装包安装。

问题3：

 接着执行命令：gem install redis

ERROR:  While executing gem ... (Gem::Exception)

    Unable to require openssl, install OpenSSL and rebuild ruby (preferred) or use non-HTTPS sources

网上搜索到的解决方法： gem sources --add https://ruby.taobao.org/ --remove https://rubygems.org/
ERROR:  While executing gem ... (Gem::Exception)

    Unable to require openssl, install OpenSSL and rebuild ruby (preferred) or use non-HTTPS sources

还是问题以旧。

解决方法：

      gem sources -a https://gems.ruby-china.org/ 把https地址改成 gem sources -a  http://gems.ruby-china.org/

执行成功，查看gem source -l 镜像地址修改成功。

再次执行:gem install redis成功。

通过命令查看：

gem list 已经成功安装了redis的依赖。

执行redis 目录下的ruby-trib.rb

命令格式如下：

./redis-trib.rb create --replicas 1 192.168.135.128:1000 192.168.135.128:2000 

192.168.135.128:3000 192.168.135.128:1001 192.168.135.128:2001 192.168.135.128:3001

注意：--replicas  1 代表每个master有一个slave，还有就是前面三个是主服务，后面三个从服务地址，集群配置成功。

如图所示：





以上是在个人配置集群的时候碰到的问题。

java 程序测试集群：

JedisPoolConfig poolConfig=new JedisPoolConfig();
Set<HostAndPort> nodeList=new HashSet<HostAndPort>();
nodeList.add(new HostAndPort(host,1000));
nodeList.add(new HostAndPort(host,1001));
nodeList.add(new HostAndPort(host,2000));
nodeList.add(new HostAndPort(host,2001));
nodeList.add(new HostAndPort(host,3000));
nodeList.add(new HostAndPort(host,3001));
JedisCluster cluster=new JedisCluster(nodeList,poolConfig);
String name=cluster.get("name");
System.out.println("args = [" + name + "]");

程序运行效果如下: