Server management the Erlang node and the Erlang application Starting nodes multiple Erlang applications can run inside the same node an application on node asparagus can call functions in applications running on node artichoke as though those functi…

➜ ~ rabbitmq-server ERROR: node with name "rabbit" already running on "localhost" ➜ ~ ps aux|grep epmd wangyizhe 949 0.0 0.0 2461372 256 ?? S 二04下午 0:00.99 /usr/local/Cellar/erlang/19.0.2/lib/erlang/erts-8.0.2/bin/epmd -daemon wangyizh…

今天在搭建OpenStack的时候需要安装RabbitMQ,可是使用yum install rabbitmq-server安装之后,按照OpenStack官方提供的文档修改guest用户密码的时候却出现了如下错误: [root@controller ~]# rabbitmqctl change_password guest Rabbit123 Changing password for user "guest" ... Error: unable to connect to node…

1. Consumers and producers Producers create messages and publish (send) them to a broker server (RabbitMQ). A message has two parts: a payload and a label. The payload is the data you want to transmit. It can be anything from a JSON array to an MPEG-…

Batteries included: RabbitMQ clustering The clustering built in to RabbitMQ was designed with two goals in mind: allowing consumers and producers to keep running in the event one Rabbit node dies, and linearly scaling messaging throughput by adding m…

Producers create messages and publish (send) them to a broker server (RabbitMQ).What’s a message? A message has two parts: a payload and a label. The payload is the data you want to transmit. It can be anything from a JSON array to an MPEG-4 of yourf…

二.nova-api 步骤3:nova-api接收请求 nova-api接收请求,也不是随便怎么来都接收的,而是需要设定rate limits,默认的实现是在ratelimit的middleware里面实现的. 然而有时候,我们希望实现distributed rate-limiting,从而Turnstile是一个不错的选择. https://github.com/klmitch/turnstilehttp://pypi.python.org/pypi/turnstile 步骤4:对Token的…

系统版本 CentOS Linux release 7.2.1511 (Core) MySQL安装 一.下载mysql的repo源 wget http://repo.mysql.com/mysql-community-release-el7-5.noarch.rpm 二.安装mysql-community-release-el7-5.noarch.rpm包 rpm -ivh mysql-community-release-el7-5.noarch.rpm 安装这个包后,会获得两个MySQL的yu…

和RabbitMQ这个项目的缘分好奇怪,很长一段时间内是只关注源代码,真的是Erlang开源项目中的典范;现在要在项目中应用RabbitMQ,从新的视角切入,全新的感觉.仿佛旧情人换了新衣,虽是熟稔却有不曾领略的风情. RabbitMQ提供了一整套机制来处理消息的发送,接收,容错,管理,上一篇文章中我提到了一篇Rabbits and warrens的文章,是一篇非常棒的入门文章,但是里面忽略了不少细节,我沿着RabbitMQ in Action重新梳理了一遍,笔记于此,备忘. Exchanges…

实验环境 RabbitMQ 集群 server1.example.com    IP: 10.10.10.11    Node: diskserver2.example.com    IP: 10.10.10.12    Node: diskserver3.example.com    IP: 10.10.10.13    Node: disk RabbitMQ相关端口 (epmd), (Erlang distribution) , (AMQP -- without and with TLS)…