centos 5.4 下安装rubbitMQ

rubbitmq是用ERLang编写，所以安装rubbitMQ-Server前首先要安装ERLang

sudo yum install erlang
提示：

erlang-wx-R14B-03.3.el5.x86_64 from epel-erlang has depsolving problems
  --> Missing Dependency: libwx_gtk2u_core-2.8.so.0(WXU_2.8)(64bit) is needed by package erlang-wx-R14B-03.3.el5.x86_64 (epel-erlang)
erlang-wx-R14B-03.3.el5.x86_64 from epel-erlang has depsolving problems
  --> Missing Dependency: libwx_gtk2u_stc-2.8.so.0(WXU_2.8)(64bit) is needed by package erlang-wx-R14B-03.3.el5.x86_64 (epel-erlang)
erlang-wx-R14B-03.3.el5.x86_64 from epel-erlang has depsolving problems
  --> Missing Dependency: libwx_gtk2u_gl-2.8.so.0()(64bit) is needed by package erlang-wx-R14B-03.3.el5.x86_64 (epel-erlang)
erlang-wx-R14B-03.3.el5.x86_64 from epel-erlang has depsolving problems
  --> Missing Dependency: libwx_baseu-2.8.so.0()(64bit) is needed by package erlang-wx-R14B-03.3.el5.x86_64 (epel-erlang)
erlang-wx-R14B-03.3.el5.x86_64 from epel-erlang has depsolving problems
  --> Missing Dependency: libwx_gtk2u_adv-2.8.so.0()(64bit) is needed by package erlang-wx-R14B-03.3.el5.x86_64 (epel-erlang)
erlang-wx-R14B-03.3.el5.x86_64 from epel-erlang has depsolving problems
  --> Missing Dependency: libwx_gtk2u_gl-2.8.so.0(WXU_2.8)(64bit) is needed by package erlang-wx-R14B-03.3.el5.x86_64 (epel-erlang)
erlang-wx-R14B-03.3.el5.x86_64 from epel-erlang has depsolving problems
  --> Missing Dependency: libwx_gtk2u_adv-2.8.so.0(WXU_2.8)(64bit) is needed by package erlang-wx-R14B-03.3.el5.x86_64 (epel-erlang)

不知道gtk2u是个什么东东，于是看erlang的官方安装说明

We strongly recommend using your distribution's packaged version of Erlang to run the server. This is part of Fedora, and in EPEL for RHEL. To enable EPEL on your Red Hat machine, see the EPEL FAQ. Then just yum install erlang

不知道EPEL是个什么东东，google之：
[quote]
EPEL（http://fedoraproject.org/wiki/EPEL） 是由 Fedora 社区打造，为 RHEL 及衍生发行版如 CentOS、Scientific Linux 等提供高质量软件包的项目。装上了 EPEL，就像在 Fedora 上一样，可以通过 yum install package-name，随意安装软件。
安装 EPEL 非常简单：
* RHEL 4（centos 4）： su -c 'rpm -Uvh http://download.fedora.redhat.com/pub/epel/4/i386/epel-release-4-9.noarch.rpm'
* RHEL 5（centos 5）： su -c 'rpm -Uvh http://download.fedora.redhat.com/pub/epel/5/i386/epel-release-5-3.noarch.rpm'
安装完毕之后，即可使用 yum 来安装软件，比如 Nagios：
yum install nagios
[/quote]

安装好EPEL之后再次 运行 yum install erlang，即可成功！