为何80%的码农都作不了架构师？>>> 
java
CentOS7 安装RabbitMQ 亲测
我按照别的博文，使用
yum install erlang命令安装了erlang，而后再RabbitMQ下载了rabbitmq-server-3.7.4-1.el7.noarch.rpm在执行rpm -ivh rabbitmq-server-3.7.4-1.el7.noarch.rpm命令时，报错node
warning: rabbitmq-server-3.7.4-1.el7.noarch.rpm: Header V4 RSA/SHA1 Signature, key ID 6026dfca: NOKEY error: Failed dependencies: erlang >= 19.3 is needed by rabbitmq-server-3.7.4-1.el7.noarch socat is needed by rabbitmq-server-3.7.4-1.el7.noarch
这儿存在两个问题： 问题1、erlang >= 19.3 is needed by rabbitmq-server-3.7.4-1.el7.noarch 问题2、socat is needed by rabbitmq-server-3.7.4-1.el7.noarch 接下来围绕这两个问题。python
准备
RabbitMQ：rpm -ivh rabbitmq-server-3.7.4-1.el7.noarch.rpm 下载请戳这儿； erlang：下载请戳这儿linux
问题2、socat is needed by rabbitmq-server-3.7.4-1.el7.noarch
解决方案：使用命令
yum -y install socat进行安装便可，我看有些博主在这步的时候 会遇到另外一个问题会报错没有socat包或是找不到socat包，解决方法安装centos的epel的扩展源，这个问题解决方案：yum -y install epel-release执行这个命令后再执行以前的 socat安装命令c++
问题1、erlang >= 19.3 is needed by rabbitmq-server-3.7.4-1.el7.noarch
因为咱们使用
yum install erlang命令安装了erlang，它的版本不支持rabbitmq-server-3.7.4-1.el7.noarch因此咱们从新安装提示给的 19.3的版本。web
准备开始安装 erlang 19.3(otp_src_19.3)
使用命令获取erlang 19.3的文件shell
命令： wget http://erlang.org/download/otp_src_19.3.tar.gz
# wget http://erlang.org/download/otp_src_19.3.tar.gz --2018-04-26 09:33:06-- http://erlang.org/download/otp_src_19.3.tar.gz Resolving erlang.org (erlang.org)... 192.121.151.106 Connecting to erlang.org (erlang.org)|192.121.151.106|:80... connected. HTTP request sent, awaiting response... 200 OK Length: 68510871 (65M) [application/x-tar] Saving to: ‘otp_src_19.3.tar.gz’ 100%[=====================================================================================================================================================>] 68,510,871 246KB/s in 4m 31s 2018-04-26 09:37:38 (247 KB/s) - ‘otp_src_19.3.tar.gz’ saved [68510871/68510871]
解压erlang安装包，会有不少的东西json
# tar -xzvf otp_src_19.3.tar.gz
而后咱们在进入解压后的目录bootstrap
# cd otp_src_19.3
[root@ otp_src_19.3]# ll total 596 -rw-r--r-- 1 516 wheel 90488 Mar 15 2017 aclocal.m4 -rw-r--r-- 1 516 wheel 601 Mar 15 2017 AUTHORS drwxr-xr-x 2 516 wheel 4096 Mar 15 2017 bin drwxr-xr-x 3 516 wheel 4096 Mar 15 2017 bootstrap -rwxr-xr-x 1 516 wheel 152066 Mar 15 2017 configure -rw-r--r-- 1 516 wheel 15300 Mar 15 2017 configure.in -rw-r--r-- 1 516 wheel 4325 Mar 15 2017 CONTRIBUTING.md -rw-r--r-- 1 516 wheel 1146 Mar 15 2017 erl-build-tool-vars.sh drwxr-xr-x 18 516 wheel 4096 Mar 15 2017 erts drwxr-xr-x 2 516 wheel 4096 Mar 15 2017 HOWTO drwxr-xr-x 50 516 wheel 4096 Mar 15 2017 lib -rw-r--r-- 1 516 wheel 10175 Mar 15 2017 LICENSE.txt drwxr-xr-x 2 516 wheel 4096 Mar 15 2017 make -rw-r--r-- 1 516 wheel 40401 Mar 15 2017 Makefile.in -rwxr-xr-x 1 516 wheel 39280 Mar 15 2017 otp_build -rwxr-xr-x 1 516 wheel 12980 Mar 15 2017 otp_patch_apply -rw-r--r-- 1 516 wheel 5 Mar 15 2017 OTP_VERSION -rw-r--r-- 1 516 wheel 55916 Mar 15 2017 otp_versions.table drwxr-xr-x 2 516 wheel 4096 Mar 15 2017 plt -rw-r--r-- 1 516 wheel 100089 Mar 15 2017 prebuilt.files -rw-r--r-- 1 516 wheel 239 Mar 15 2017 proposed_updates.json -rw-r--r-- 1 516 wheel 2581 Mar 15 2017 README.md drwxr-xr-x 2 516 wheel 4096 Mar 15 2017 scripts drwxr-xr-x 3 516 wheel 4096 Mar 15 2017 system -rw-r--r-- 1 516 wheel 372 Mar 15 2017 TAR.include drwxr-xr-x 2 516 wheel 4096 Mar 15 2017 xcomp
编译安装erlang语言环境 prefix=/usr/local/erlang 为安装目录vim
./configure --prefix=/usr/local/erlang --enable-smp-support --enable-threads --enable-sctp --enable-kernel-poll --enable-hipe --with-ssl --without-javac
编译报错：
configure: error: No curses library functions found configure: error: /bin/sh '/usr/local/tool/otp_src_19.3/erts/configure' failed for erts
上面的报错，我起初没注意，结果致使后面安装的时候 报错。
编译完成后会提示(ps：这是我出了一次错之后我才注意到这个。)
*********************************************************************
********************** APPLICATIONS DISABLED **********************
*********************************************************************
jinterface : Java compiler disabled by user
*********************************************************************
*********************************************************************
********************** APPLICATIONS INFORMATION *******************
*********************************************************************
wx : wxWidgets not found, wx will NOT be usable
*********************************************************************
*********************************************************************
********************** DOCUMENTATION INFORMATION ******************
*********************************************************************
documentation :
fop is missing.
Using fakefop to generate placeholder PDF files.
*********************************************************************
erlang语言编译配置选项：
–prefix 指定安装目录
–enable-smp-support启用对称多处理支持（Symmetric Multi-Processing对称多处理结构的简称）
–enable-threads启用异步线程支持
–enable-sctp启用流控制协议支持（Stream Control Transmission Protocol，流控制传输协议）
–enable-kernel-poll启用Linux内核poll
–enable-hipe启用高性能Erlang –with-ssl 启用ssl包 –without-javac
不用java编译
开始安装编译：
make && make install
报错：
Makefile:248: /usr/local/tool/otp_src_19.3/make/x86_64-unknown-linux-gnu/otp_ded.mk: No such file or directory make: *** No rule to make target `/usr/local/tool/otp_src_19.3/make/x86_64-unknown-linux-gnu/otp_ded.mk'. Stop.
该错是因为编译报错后致使，而编译出错应该是因为我有些依赖没有准备好。 依赖环境的安装-若是须要用编译安装erlang语言环境，须要安装C++编译
yum -y install make gcc gcc-c++ kernel-devel m4 ncurses-devel openssl-devel unixODBC unixODBC-devel httpd python-simplejson我将这些东西从新用yum命令安装一下后 在进行编译，而后编译就没有报错。再次执行安装命令。
配置erlang环境变量:
vim /etc/profile export PATH=$PATH:/usr/local/erlang/bin source /etc/profil
验证是否安装成功：
//注释：输入erl Erlang/OTP 17 [erts-6.2] [source] [smp:2:2] [async-threads:10] [kernel-poll:false]，会输出版本号信息 # erl Erlang/OTP 17 [erts-6.2] [source] [smp:2:2] [async-threads:10] [kernel-poll:false] Erlang R16B03-1 (erts-5.10.4) [source] [64-bit] [async-threads:10] [hipe] [kernel-poll:false] Eshell V5.10.4 (abort with ^G) 1>
开始安装rabbitmq rpm包
须要回到 rabbitmq 安装包目录
执行rpm安装命令
# rpm -ivh rabbitmq-server-3.7.4-1.el7.noarch.rpm
安装了前面准备的东西 可是仍是报错
[root@ tool]# rpm -ivh rabbitmq-server-3.7.4-1.el7.noarch.rpm warning: rabbitmq-server-3.7.4-1.el7.noarch.rpm: Header V4 RSA/SHA1 Signature, key ID 6026dfca: NOKEY error: Failed dependencies: erlang >= 19.3 is needed by rabbitmq-server-3.7.4-1.el7.noarch
安装了仍是在报以前那个错误，因为我如今工做须要用，因此我暂时妥协了，换了一个版本的rabbitmq
[root@ tool]# wget http://www.rabbitmq.com/releases/rabbitmq-server/v3.5.0/rabbitmq-server-3.5.0-1.noarch.rpm --2018-04-26 11:07:47-- http://www.rabbitmq.com/releases/rabbitmq-server/v3.5.0/rabbitmq-server-3.5.0-1.noarch.rpm Resolving www.rabbitmq.com (www.rabbitmq.com)... 104.20.62.197, 104.20.63.197, 2400:cb00:2048:1::6814:3ec5, ... Connecting to www.rabbitmq.com (www.rabbitmq.com)|104.20.62.197|:80... connected. HTTP request sent, awaiting response... 200 OK Length: 4198248 (4.0M) [application/x-redhat-package-manager] Saving to: ‘rabbitmq-server-3.5.0-1.noarch.rpm’ 100%[==============================================>] 4,198,248 2.14MB/s in 1.9s 2018-04-26 11:07:50 (2.14 MB/s) - ‘rabbitmq-server-3.5.0-1.noarch.rpm’ saved [4198248/4198248]
rpm -ivh rabbitmq-server-3.5.0-1.noarch.rpm warning: rabbitmq-server-3.5.0-1.noarch.rpm: Header V4 DSA/SHA1 Signature, key ID 056e8e56: NOKEY Preparing... ################################# [100%] Updating / installing... 1:rabbitmq-server-3.5.0-1 ################################# [100%]
检查是否安装成功
[root@ tool]# rabbitmqctl -q status
Error: unable to connect to node rabbit@: nodedown
DIAGNOSTICS
===========
attempted to contact: [rabbit@]
rabbit@:
* connected to epmd (port 4369) on
* epmd reports: node 'rabbit' not running at all
no other nodes on
* suggestion: start the node
current node details:
- node name: 'rabbitmq-cli-17848@'
- home dir: /var/lib/rabbitmq
- cookie hash: Qt5otymo+nmYhicDOdbv/w==
打开服务：
[root@ tool]# service rabbitmq-server start Starting rabbitmq-server (via systemctl): [ OK ]
关闭服务：
[root@ tool]# service rabbitmq-server stop Stopping rabbitmq-server (via systemctl): [ OK ]
经常使用rabbitMq启动命令：
service rabbitmq-server start service rabbitmq-server stop service rabbitmq-server status service rabbitmq-server rotate-logs| service rabbitmq-server restart service rabbitmq-server condrestart service rabbitmq-server try-restart service rabbitmq-server reload service rabbitmq-server force-reload ps -ef | grep rabbitmq 查看rabbitMq进程 netstat -anplt | grep LISTEN rabbitmq默认监听端口15672/5672
而后开启管理页面插件
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@... failed.
* Could not contact node rabbit@.
Changes will take effect at broker restart.
* Options: --online - fail if broker cannot be contacted.
--offline - do not try to contact broker.
添加管理员帐号
rabbitmqctl add_user rabbitadmin 123456
[root@tool]# rabbitmqctl add_user rabbitadmin 123456
Error: unable to connect to node rabbit@: nodedown
DIAGNOSTICS
===========
attempted to contact: [rabbit@]
rabbit@:
* connected to epmd (port 4369) on
* epmd reports: node 'rabbit' not running at all
no other nodes on
* suggestion: start the node
current node details:
- node name: 'rabbitmq-cli-18489@'
- home dir: /var/lib/rabbitmq
- cookie hash: Qt5otymo+nmYhicDOdbv/w==