1. 安装erlang
erlang的安装比想象中要麻烦的多，试验了好几种，总是出现依赖错误。。最后还是通过kerl脚本安装搞定了。。具体参见：Installing Erlang。
[work@study.arganzheng.me downloads]$ ./kerl list releases
Getting the available releases from erlang.org...
R10B-0 R10B-10 R10B-1a R10B-2 R10B-3 R10B-4 R10B-5 R10B-6 R10B-7 R10B-8 R10B-9 R11B-0 R11B-1 R11B-2 R11B-3 R11B-4 R11B-5 R12B-0 R12B-1 R12B-2 R12B-3 R12B-4 R12B-5 R13A R13B01 R13B02-1 R13B02 R13B03 R13B04 R13B R14A R14B01 R14B02 R14B03 R14B04 R14B_erts-5.8.1.1 R14B R15B01 R15B02 R15B02_with_MSVCR100_installer_fix R15B03-1 R15B03 R15B R16A_RELEASE_CANDIDATE R16B01 R16B02 R16B03-1 R16B03 R16B 17.0-rc1 17.0-rc2 17.0 17.1 17.3 17.4 17.5 18.0 18.1 18.2.1 18.2 18.3
Run 'kerl update releases' to update this list from erlang.org
[work@study.arganzheng.me downloads]$ ./kerl update releases
Getting the available releases from erlang.org...
The available releases are:
R10B-0 R10B-10 R10B-1a R10B-2 R10B-3 R10B-4 R10B-5 R10B-6 R10B-7 R10B-8 R10B-9 R11B-0 R11B-1 R11B-2 R11B-3 R11B-4 R11B-5 R12B-0 R12B-1 R12B-2 R12B-3 R12B-4 R12B-5 R13A R13B01 R13B02-1 R13B02 R13B03 R13B04 R13B R14A R14B01 R14B02 R14B03 R14B04 R14B_erts-5.8.1.1 R14B R15B01 R15B02 R15B02_with_MSVCR100_installer_fix R15B03-1 R15B03 R15B R16A_RELEASE_CANDIDATE R16B01 R16B02 R16B03-1 R16B03 R16B 17.0-rc1 17.0-rc2 17.0 17.1 17.3 17.4 17.5 18.0 18.1 18.2.1 18.2 18.3
[work@study.arganzheng.me downloads]$ ./kerl build 18.3 erlang-18.3
Downloading otp_src_18.3.tar.gz to /home/work/.kerl/archives
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
100 65.1M 100 65.1M 0 0 259k 0 0:04:17 0:04:17 --:--:-- 255k^@
Getting the checksum file from erlang.org...
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
100 27754 100 27754 0 0 13640 0 0:00:02 0:00:02 --:--:-- 87188
Verifying archive checksum...
Checksum verified (7e4ff32f97c36fb3dab736f8d481830b)
Extracting source code
Building Erlang/OTP 18.3 (erlang-18.3), please wait...
Erlang/OTP 18.3 (erlang-18.3) has been successfully built
[work@study.arganzheng.me downloads]$ ./kerl list builds
18.3,erlang-18.3
[work@study.arganzheng.me downloads]$ ./kerl install erlang-18.3 /home/work/erlang/18.3
Installing Erlang/OTP 18.3 (erlang-18.3) in /home/work/erlang/18.3...
You can activate this installation running the following command:
. /home/work/erlang/18.3/activate
Later on, you can leave the installation typing:
kerl_deactivate
[work@study.arganzheng.me downloads]$ ./kerl list installations
erlang-18.3 /home/work/erlang/18.3
[work@study.arganzheng.me downloads]$ . /home/work/erlang/18.3/activate
[work@study.arganzheng.me downloads]$ ./kerl active
The current active installation is:
/home/work/erlang/18.3
2. 安装rabbitmq
一开始图省事，想直接使用yum或者rpm包安装，结果发现问题一大堆。。。：
[root@study.arganzheng.me downloads]# rpm -Uvh rabbitmq-server-3.6.1-1.noarch.rpm
error: Failed dependencies:
erlang >= R16B-03 is needed by rabbitmq-server-3.6.1-1.noarch
会报没有找到erlang依赖，但是其实我们已经通过kerl脚本安装过了，所以可以直接忽略（Install RabbitMQ on CentOS 6）:
[root@study.arganzheng.me downloads]# rpm --nodeps -Uvh rabbitmq-server-3.6.1-1.noarch.rpm
Preparing... ########################################### [100%]
1:rabbitmq-server ########################################### [100%]
果然很简单，但是发现用root安装会导致各种奇怪的问题：
[root@study.arganzheng.me ~]# /etc/init.d/rabbitmq-server start
Starting rabbitmq-server: FAILED - check /var/log/rabbitmq/startup_{log, _err}
rabbitmq-server.
[root@study.arganzheng.me rabbitmq]# tailf startup_err
mkdir: cannot create directory `/var/run/rabbitmq': Permission denied
最后还是决定使用源码安装。。首先卸载掉原来的安装：
[root@study.arganzheng.me ~]# yum remove rabbitmq-server
Loaded plugins: aliases, downloadonly, fastestmirror, priorities, security
Setting up Remove Process
Resolving Dependencies
--> Running transaction check
---> Package rabbitmq-server.noarch 0:3.6.1-1 will be erased
--> Finished Dependency Resolution
Dependencies Resolved
================================================================================================================================================
Package Arch Version Repository Size
================================================================================================================================================
Removing:
rabbitmq-server noarch 3.6.1-1 installed 5.5 M
Transaction Summary
================================================================================================================================================
Remove 1 Package(s)
Installed size: 5.5 M
Is this ok [y/N]: y
Downloading Packages:
Running rpm_check_debug
Running Transaction Test
Transaction Test Succeeded
Running Transaction
Warning: RPMDB altered outside of yum.
Erasing : rabbitmq-server-3.6.1-1.noarch 1/1
Stopping rabbitmq-server: RabbitMQ is not running
rabbitmq-server.
Verifying : rabbitmq-server-3.6.1-1.noarch 1/1
Removed:
rabbitmq-server.noarch 0:3.6.1-1
Complete!
再源码安装：building RabbitMQ server from source。
但是默认会安装到/usr/local目录，然后又是root启动。。所以我们要修改他的默认安装地址，然而文档并没有说明怎么指定，查看Makefile发现如下变量：
DESTDIR ?=
PREFIX ?= /usr/local
WINDOWS_PREFIX ?= rabbitmq-server-windows-$(VERSION)
MANDIR ?= $(PREFIX)/share/man
RMQ_ROOTDIR ?= $(PREFIX)/lib/erlang
RMQ_BINDIR ?= $(RMQ_ROOTDIR)/bin
RMQ_LIBDIR ?= $(RMQ_ROOTDIR)/lib
RMQ_ERLAPP_DIR ?= $(RMQ_LIBDIR)/rabbitmq_server-$(VERSION)
所以我们可以这样子编译：
[work@study.arganzheng.me downloads]$ cd rabbitmq-server-3.6.1
[work@study.arganzheng.me rabbitmq-server-3.6.1]$ make
[work@study.arganzheng.me rabbitmq-server-3.6.1]$ make install PREFIX=/home/work/rabbitmq RMQ_ROOTDIR=/home/work/rabbitmq RMQ_ERLAPP_DIR=
/usr/bin/make64 MAC=64 install PREFIX=/home/work/rabbitmq RMQ_ROOTDIR=/home/work/rabbitmq
[work@study.arganzheng.me ~]$ vim .bashrc
# .bashrc
# User specific aliases and functions
# Source global definitions
if [ -f /etc/bashrc ]; then
. /etc/bashrc
fi
ERL_HOME=/home/work/erlang/18.3
export PATH=$PATH:$ERL_HOME/bin
RABBITMQ_HOME=/home/work/rabbitmq/lib/rabbitmq_server-3.6.1
export PATH=$PATH:$RABBITMQ_HOME/sbin
[work@study.arganzheng.me ~]$ source .bashrc
3. 配置和启动
[work@study.arganzheng.me ~]$ rabbitmq-server start
/home/work/rabbitmq/lib/rabbitmq_server-3.6.1/sbin/rabbitmq-server: line 49: /var/lib/rabbitmq/mnesia/rabbit@hkg02-mj-data07.pid: Permission denied
Failed to write pid file: /var/lib/rabbitmq/mnesia/rabbit@hkg02-mj-data07.pid
修改一下用户组：
[root@study.arganzheng.me work]# chown -R work:work /var/lib/rabbitmq/
再次启动：
[work@study.arganzheng.me ~]$ rabbitmq-server start
RabbitMQ 3.6.1. Copyright (C) 2007-2016 Pivotal Software, Inc.
## ## Licensed under the MPL. See http://www.rabbitmq.com/
## ##
########## Logs: /var/log/rabbitmq/rabbit@hkg02-mj-data07.log
###### ## /var/log/rabbitmq/rabbit@hkg02-mj-data07-sasl.log
##########
Starting broker... completed with 6 plugins.
[work@study.arganzheng.me ~]$ tailf /var/log/rabbitmq/rabbit@hkg02-mj-data07.log
Statistics database started.
=INFO REPORT==== 8-Apr-2016::16:54:51 ===
Server startup complete; 6 plugins started.
* rabbitmq_management
* rabbitmq_management_agent
* rabbitmq_web_dispatch
* webmachine
* mochiweb
* amqp_client
成功了，肉留满面啊。。
TIPS
- 注意到源码安装的RabbitMQ默认安装了6个插件，其实就是下面要介绍的监控和管理插件。
- 如果要后台运行: rabbitmq-server -detached
- 正在生产环境使用需要配置一下，比如内存，文件句柄限制，等。
4. 管理和监控
如果是源码安装，这一步可以忽略：
[work@study.arganzheng.me ~]$ rabbitmq-plugins enable rabbitmq_management
The following plugins have been enabled:
mochiweb
webmachine
rabbitmq_web_dispatch
amqp_client
rabbitmq_management_agent
rabbitmq_management
Applying plugin configuration to rabbit@hkg02-mj-data07... started 6 plugins.
然后重启服务。
管理插件默认是监听15672端口，我们可以修改这个配置项：
[work@study.arganzheng.me ~]$ vim /etc/rabbitmq/rabbitmq.config
{rabbitmq_management,
[ {http_log_dir, "/tmp/rabbit-mgmt"},
{rates_mode, basic},
{listener, [{port, 8345}]}
]},
现在我们可以在浏览器直接访问了：http://10.242.111.26:8345/。但是发现登陆不了，要用户名密码。默认的guest/guest并不能登陆成功，日志显示：
=WARNING REPORT==== 8-Apr-2016::17:05:33 ===
HTTP access denied: user '' - invalid credentials
=ERROR REPORT==== 8-Apr-2016::17:05:33 ===
webmachine error: path="/api/whoami"
"Unauthorized"
=INFO REPORT==== 8-Apr-2016::17:05:33 ===
webmachine_log_handler: closing log file: "/tmp/rabbit-mgmt/access.log"
=INFO REPORT==== 8-Apr-2016::17:05:33 ===
opening log file: "/tmp/rabbit-mgmt/access.log.2016_04_08_09"
^@
=WARNING REPORT==== 8-Apr-2016::17:06:03 ===
HTTP access denied: user 'guest' - User can only log in via localhost
guest只能通过本机访问。查看文档需要使用rabbitmqctl add_user来创建一个non-administrator user 和 rabbitmqctl set_user_tags来提升一个普通用户为管理员:
[work@study.arganzheng.me ~]$ rabbitmqctl add_user argan xxxx
Creating user "argan" ...
[work@study.arganzheng.me ~]$ rabbitmqctl list_users
Listing users ...
argan []
guest [administrator]
[work@study.arganzheng.me ~]$ rabbitmqctl set_user_tags argan administrator
Setting tags for user "argan" to [administrator] ...
[work@study.arganzheng.me ~]$ rabbitmqctl list_users
Listing users ...
argan [administrator]
guest [administrator]
果然可以登陆成功了，管理节目还是很清新的～。
还可以通过管理插件查看API：http://10.242.111.26:8345/api/。
但是发现用管理节目创建一个队列一直没有反应，Console显示为 PUT http://10.242.111.26:8345/api/queues/%2F/91-order-wq 401 (Unauthorized)。日志显示：
=ERROR REPORT==== 8-Apr-2016::17:43:45 ===
webmachine error: path="/api/queues/%2F/91-order-wq"
"Unauthorized"
^@^@^@^@
=WARNING REPORT==== 8-Apr-2016::17:48:10 ===
HTTP access denied: user 'argan' - User not authorised to access virtual host
=ERROR REPORT==== 8-Apr-2016::17:48:10 ===
webmachine error: path="/api/queues/%2F/91-order-wq"
"Unauthorized"
是没有权限，原来 administrator 还不是万能的。。好吧。。
[work@study.arganzheng.me ~]$ rabbitmqctl add_vhost /mobopay
Creating vhost "/mobopay" ...
[work@study.arganzheng.me ~]$ rabbitmqctl set_user_tags argan administrator management
Setting tags for user "argan" to [administrator,management] ...
[work@study.arganzheng.me ~]$ rabbitmqctl set_permissions -p /mobopay argan '.*' '.*' '.*'
Setting permissions for user "argan" in vhost "/mobopay" ...
果然可以了。
4. 使用
可以参考这个系列，RabbitMQ系列 第三篇：工作队列Work Queue
