redis-cluster建立步骤

官方提供了脚本建立集群的工具，咱们参照官方的指导进行建立集群以我本测试环境为例：

/usr/local/soft/redis-cluster/redis-3.2.1/utils/create-cluster

进入脚本目录后执行集群建立失败，以下：

[root@bogon create-cluster]# ./create-cluster create
../../src/redis-trib.rb:24:in `require': no such file to load -- rubygems (LoadError)
        from ../../src/redis-trib.rb:24

经过查找官方文档说明，

The redis-trib utility is in the src directory of the Redis source code distribution. You need to install redis gem to be able to run redis-trib.（....须要经过安装redis gem来运行redis-trib）

gem install redis

系统没有安装gem，先安装gem。

1）yum install ruby

2）安装rubygems

ruby setup.rb --help

安装提示ruby版本需大于1.8.7，则须要手动安装ruby。从【ruby源】下载安装包后解压进行安装。

[root@bogon create-cluster]# gem install redis
ERROR:  Loading command: install (LoadError)
        cannot load such file -- zlib
ERROR:  While executing gem ... (NoMethodError)
    undefined method `invoke_with_build_args' for nil:NilClass

进入ruby安装目录/usr/local/soft/ruby/ruby-2.1.7/ext/zlib，手动编译安装zlib。

[root@bogon create-cluster]# gem install redis
ERROR:  While executing gem ... (Gem::Exception)
    Unable to require openssl, install OpenSSL and rebuild ruby (preferred) or use non-HTTPS sources

yum install openssl-devel

yum install openssl

进入ruby安装目录/usr/local/soft/ruby/ruby-2.1.7/ext/openssl，手动编译安装openssl

上述安装成功后，从新执行gem install redis

[root@bogon openssl]# gem install redis
Fetching: redis-3.3.1.gem (100%)
Successfully installed redis-3.3.1
Parsing documentation for redis-3.3.1
Installing ri documentation for redis-3.3.1
Done installing documentation for redis after 1 seconds
1 gem installed

进入脚本建立集群的目录/usr/local/soft/redis-cluster/redis-3.2.1/utils/create-cluster启动节点后建立集群。

1）启动6个节点

[root@bogon create-cluster]# ./create-cluster start
Starting 20001
Starting 20002
Starting 20003
Starting 20004
Starting 20005
Starting 20006

2）建立集群，3主3从

[root@bogon create-cluster]# ./create-cluster create
>>> Creating cluster
>>> Performing hash slots allocation on 6 nodes...
Using 3 masters:
127.0.0.1:20001
127.0.0.1:20002
127.0.0.1:20003
Adding replica 127.0.0.1:20004 to 127.0.0.1:20001
Adding replica 127.0.0.1:20005 to 127.0.0.1:20002
Adding replica 127.0.0.1:20006 to 127.0.0.1:20003
M: d3bef4dff6260735c0ff12b8add62636c2bc7e4f 127.0.0.1:20001
   slots:0-5460 (5461 slots) master
M: 351691e42b2207cf0322dbf4904c9b9fc6e6d18a 127.0.0.1:20002
   slots:5461-10922 (5462 slots) master
M: 54f86341f254d453f5e9221ecc6ab1623fdc7ed2 127.0.0.1:20003
   slots:10923-16383 (5461 slots) master
S: cbf8299efc5ef5422d3f160f54d7f7fb5452d613 127.0.0.1:20004
   replicates d3bef4dff6260735c0ff12b8add62636c2bc7e4f
S: 43a8538ace038e638ecc98c162bedfe4ed43798c 127.0.0.1:20005
   replicates 351691e42b2207cf0322dbf4904c9b9fc6e6d18a
S: 83df222815c36c773c2494486a03ffcd3367210a 127.0.0.1:20006
   replicates 54f86341f254d453f5e9221ecc6ab1623fdc7ed2
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 127.0.0.1:20001)
M: d3bef4dff6260735c0ff12b8add62636c2bc7e4f 127.0.0.1:20001
   slots:0-5460 (5461 slots) master
M: 351691e42b2207cf0322dbf4904c9b9fc6e6d18a 127.0.0.1:20002
   slots:5461-10922 (5462 slots) master
M: 54f86341f254d453f5e9221ecc6ab1623fdc7ed2 127.0.0.1:20003
   slots:10923-16383 (5461 slots) master
M: cbf8299efc5ef5422d3f160f54d7f7fb5452d613 127.0.0.1:20004
   slots: (0 slots) master
   replicates d3bef4dff6260735c0ff12b8add62636c2bc7e4f
M: 43a8538ace038e638ecc98c162bedfe4ed43798c 127.0.0.1:20005
   slots: (0 slots) master
   replicates 351691e42b2207cf0322dbf4904c9b9fc6e6d18a
M: 83df222815c36c773c2494486a03ffcd3367210a 127.0.0.1:20006
   slots: (0 slots) master
   replicates 54f86341f254d453f5e9221ecc6ab1623fdc7ed2
[OK] All nodes agree about slots configuration.
>>> Check for open slots...
>>> Check slots coverage...
[OK] All 16384 slots covered.

 

 

参考资料：

https://rubygems.org/pages/download/

https://ruby.taobao.org/

http://www.runoob.com/ruby/ruby-installation-unix.html

http://stackoverflow.com/questions/9727908/cannot-load-such-file-zlib-even-after-using-rvm-pkg-install-zlib

http://blog.csdn.net/kenera/article/details/25962587