RabbitMQ是流行的开源消息队列系统，是AMQP（Advanced Message Queuing Protocol高级消息队列协议）的标准实现，用erlang语言开发。RabbitMQ据说具有良好的性能和时效性，同时还能够非常好的支持集群和负载部署，非常适合在较大规模的分布式系统中使用，具体特性还在验证中，待检验。由于项目需要，安装并配置了RabbitMQ，服务器操作系统是CentOS7。具体步骤如下：
安装依赖文件：
yum install gcc glibc-devel make ncurses-devel openssl-devel xmlto
1.Erlang安装配置
下载安装包，地址，我选择的是otp_src_18.3.tar.gz。
然后解压文件：
[root@iZ25e3bt9a6Z rabbitmq]# tar -xzvf otp_src_18.3.tar.gz
[root@iZ25e3bt9a6Z rabbitmq]# cd otp_src_18.3/
配置安装路径编译代码：
[root@iZ25e3bt9a6Z otp_src_18.3]# ./configure --prefix=/opt/erlang
执行编译结果：
[root@iZ25e3bt9a6Z otp_src_18.3]# make && make install
完成后进入/opt/erlang查看执行结果
[root@iZ25e3bt9a6Z rabbitmq]# cd /opt/erlang/
[root@iZ25e3bt9a6Z erlang]# erl
Erlang/OTP 18 [erts-7.3] [source] [64-bit] [smp:8:8] [async-threads:10] [hipe] [kernel-poll:false]
Eshell V7.3 (abort with ^G)
1>
当出现以上信息时表示安装完成。然后输入’halt().’退出即可。
然后在配置Erlang环境变量,vi /etc/profile文件，增加下面的环境变量:
#set erlang environment
export PATH=$PATH:/opt/erlang/bin
source /etc/profile使得文件生效
在安装Erlang过程中，可能会遇到以下问题，一般都是因为系统中缺少相应的包引起的，缺少什么包直接yum安装即可。
2.下载安装RabbitMq
[root@iZ25e3bt9a6Z rabbitmq]# weget
解压文件
[root@iZ25e3bt9a6Z rabbitmq]# xz -d rabbitmq-server-generic-unix-3.6.1.tar.xz
[root@iZ25e3bt9a6Z rabbitmq]# tar -xvf rabbitmq-server-generic-unix-3.6.1.tar -C /opt
解压后进入文件夹/opt发现多了个文件夹rabbitmq-server-generic-unix-3.6.1 ，重命名为rabbitmq以便记忆。
然后在配置rabbitmq环境变量,vi /etc/profile文件，增加下面的环境变量:
#set rabbitmq environment
export PATH=$PATH:/opt/rabbitmq/sbin
source /etc/profile使得文件生效
3.RabbitMQ服务启动关闭
以上就已经完成了RabbitMq的安装，怎么启动服务呢？
启动服务：
[root@iZ25e3bt9a6Z rabbitmq]# cd sbin/
[root@iZ25e3bt9a6Z sbin]# ./rabbitmq-server -detached
查看服务状态：
[root@iZ25e3bt9a6Z sbin]# ./rabbitmqctl status
Status of node rabbit@iZ25e3bt9a6Z ...
[{pid,11849},
{running_applications,
[{rabbitmq_management,"RabbitMQ Management Console","3.6.1"},
{rabbitmq_management_agent,"RabbitMQ Management Agent","3.6.1"},
{rabbitmq_web_dispatch,"RabbitMQ Web Dispatcher","3.6.1"},
{webmachine,"webmachine","1.10.3"},
{amqp_client,"RabbitMQ AMQP Client","3.6.1"},
{mochiweb,"MochiMedia Web Server","2.13.0"},
{syntax_tools,"Syntax tools","1.7"},
{ssl,"Erlang/OTP SSL application","7.3"},
{public_key,"Public key infrastructure","1.1.1"},
{asn1,"The Erlang ASN1 compiler version 4.0.2","4.0.2"},
{crypto,"CRYPTO","3.6.3"},
{compiler,"ERTS CXC 138 10","6.0.3"},
{inets,"INETS CXC 138 49","6.2"},
{rabbit,"RabbitMQ","3.6.1"},
{mnesia,"MNESIA CXC 138 12","4.13.3"},
{rabbit_common,[],"3.6.1"},
{xmerl,"XML parser","1.3.10"},
{os_mon,"CPO CXC 138 46","2.4"},
{ranch,"Socket acceptor pool for TCP protocols.","1.2.1"},
{sasl,"SASL CXC 138 11","2.7"},
{stdlib,"ERTS CXC 138 10","2.8"},
{kernel,"ERTS CXC 138 10","4.2"}]},
{os,{unix,linux}},
{erlang_version,
"Erlang/OTP 18 [erts-7.3] [source] [64-bit] [smp:8:8] [async-threads:64] [hipe] [kernel-poll:true]\n"},
{memory,
[{total,64111264},
{connection_readers,0},
{connection_writers,0},
{connection_channels,0},
{connection_other,2808},
{queue_procs,2808},
{queue_slave_procs,0},
{plugins,367288},
{other_proc,19041296},
{mnesia,61720},
{mgmt_db,158696},
{msg_index,47120},
{other_ets,1372440},
{binary,128216},
{code,27368230},
{atom,992409},
{other_system,14568233}]},
{alarms,[]},
{listeners,[{clustering,25672,"::"},{amqp,5672,"::"}]},
{vm_memory_high_watermark,0.4},
{vm_memory_limit,6556241100},
{disk_free_limit,50000000},
{disk_free,37431123968},
{file_descriptors,
[{total_limit,65435},
{total_used,2},
{sockets_limit,58889},
{sockets_used,0}]},
{processes,[{limit,1048576},{used,204}]},
{run_queue,0},
{uptime,412681},
{kernel,{net_ticktime,60}}]
关闭服务：
[root@iZ25e3bt9a6Z sbin]# ./rabbitmqctl stop
Stopping and halting node rabbit@iZ25e3bt9a6Z ...
4. 配置网页插件
首先创建目录，否则可能报错：
mkdir /etc/rabbitmq
然后启用插件：
./rabbitmq-plugins enable rabbitmq_management
配置linux 端口 15672 网页管理 5672 AMQP端口
然后访问:15672即可
默认用户guest 密码guest
5. 远程访问配置
默认网页是不允许访问的，需要增加一个用户修改一下权限，代码如下：
添加用户:rabbitmqctl add_user hxb hxb
添加权限:rabbitmqctl set_permissions -p "/" hxb ".*" ".*" ".*"
修改用户角色rabbitmqctl set_user_tags hxb administrator
然后就可以远程访问了，然后可直接配置用户权限等信息。
6. rabbitmq常用命令
add_user <UserName> <Password>
delete_user <UserName>
change_password <UserName> <NewPassword>
list_users
add_vhost <VHostPath>
delete_vhost <VHostPath>
list_vhostsset_permissions [-p <VHostPath>] <UserName> <Regexp> <Regexp> <Regexp>
clear_permissions [-p <VHostPath>] <UserName>
list_permissions [-p <VHostPath>]
list_user_permissions <UserName>
list_queues [-p <VHostPath>] [<QueueInfoItem> ...]
list_exchanges [-p <VHostPath>] [<ExchangeInfoItem> ...]
list_bindings [-p <VHostPath>]
list_connections [<ConnectionInfoItem> ...]
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