July 14, 2020
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RabbitMQ - RabbitMQ binary uses a ton of memory

2013/08/11 · I'm not certain there is a typical setup for a RabbitMQ cluster. In our case, we went with what we've been calling a binary star. We took this phrase from the 0mq docs. The idea is pretty simple: it's an active/active or active/passive pair with mirrored queues. A proxy is placed between the clients and the binary …

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[erlang-questions] Setting socket options on listen

RabbitMQ binary uses a ton of memory. Hi, I am having a memory problem with RabbitMQ. My setup is something like the following: - 1 server exclusively running RabbitMQ on Ubunto 11 (16G

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My Stuff: Some useful socat commands

5.14.1.1. Test Environment¶. This section describes the setup for message queue testing. It can be either a single (all-in-one) or a multi-node installation.

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gen_tcp(3erl) — erlang-manpages — Debian jessie-backports

1-31 TTY lines (TCP ports mapped from 2001 or 6001 depends binary or ascii mode to 2032 or 6032) 33 aux. 33 - rest used for VTY access. It looks that your platform supports a 4 port asynch card anyway. If that you telnet to 2005 or 6005 than this will be a reverse telnet connection to your aux port.

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RabbitMQ requiring a reliable network is causing problems

The following code fragment is a simple example of a client connecting to a server at port 5678, transferring a binary, and closing the connection:

Tcp_listen options binary
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Erlang gen_tcp:recv(Socket, Length) semantics - itgo.me

The following code fragment provides a simple example of a client connecting to a server at port 5678, transferring a binary and closing the connection:

Tcp_listen options binary
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RabbitMQ: Queues filling up - No consumers

I'm trying to permanently increase the RabbitMQ file descriptors limit. I've already increased the system limit to 65535 and did the same for the RabbitMQ process by adding an entry to the /etc/sec

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TCP Servers - SmoothTerminal

2008/05/02 · Since I'm learning Erlang I thought my first non-trivial piece of code would be in an area where the language excels: network programming. Network programming (or socket programming) is a pain in the ass in most languages.

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Erlang Questions - Why is setting socket options by

When you're using gen_tcp:listen then you're setting up a server that receives connections, whereas `accept` is connecting to something that's listening to connections. You need to set the socket options separately in each case.

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gen_tcp(3erl) — erlang-manpages — Debian wheezy-backports

When you're using gen_tcp:listen then you're setting up a server that receives connections, whereas `accept` is connecting to something that's listening to connections. You need to set the socket options separately in each case.

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The Senile Coder: RabbitMQ connection_closed_abruptly error

rabbitmq mqtt config. GitHub Gist: instantly share code, notes, and snippets.

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Network.Socket - Haskell

You don't need packet,4 unless your Erlang client is also using that option, or your non-Erlang client precedes each packet with a 4-byte integer in network order that indicates the packet length. You probably also want to use the reuseaddr,true option so that you can stop the application and quickly start it again on the same port.

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RabbitMQ MQTT Adapter - VMware Documentation

2018/01/02 · a sample rabbitmq config file, tested with RabbitMQ 3.0.2, Erlang R15B01 - rabbitmq.config

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1167414 – Configure TCP keepalive setting to all nodes

2008/10/06 · socat TCP-LISTEN:80,fork TCP:www.domain.org:80 The fdin and fdout options tell socat to use these FDs for communication with the program. Because mail.sh inherits stdin and stdout while socat does not use them, the script can read a mail body from stdin. Socat makes alias1 your local source address (bind), cares for correct network line

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RabbitMQ - rabbitmq.config location and link

2010/03/15 · From the man page: Socat is a command line based utility that establishes two bidirectional byte streams and transfers data between them. Because the streams can be constructed from a large set of different types of data sinks and sources (see address types), and because lots of address options may be applied to the streams, socat can be used for many different purposes.

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Configuration - VMware

The Network.Socket module is for when you want full control over sockets. Essentially the entire C socket API is exposed through this module; in general the operations follow the behaviour of the C functions of the same name (consult your favourite Unix networking book).

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Sample Server - SEIDENBERG SCHOOL OF CSIS

2012/11/05 · VMware vCloud Director lost connection with AMQP Server It does seem to cause a problem as it seems to just reconnect when needed but I believe it is because my cells are behind a Cisco load balancing content switch which must drop idle connections after some timeout period.

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Ask OpenStack: Q&A Site for OpenStack Users and Developers

Introduction. This article describes how to configure RabbitMQ to listen on localhost only. Description. Some customers are working into highly restricted environment and may require to change default RabbitMQ configuration to listen on localhost only instead of whole network.

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Erlang Questions - Setting socket options on listen / accept

One more option to use if it suits your use case is message expiry. Let's say you are using RabbitMQ to send notifications to your users. You will however write them to a database and to make a notification, you may send it via RMQ.

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[Erlang] -module(ms). -export([listen/1]). -define(TCP

Description of problem: Openstack deployed by OSP-d has on all controller nodes autogenerated config file for rabbitmq with wrong values - specifically It contains tcp_listen_options section twice, first entry without keepalive option enabled and second with keepalived enabled, afaik first entry is only read and set in erlang configs.

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OpenStack Docs: 5.15. Message Queue Performance

Now, obviously this isn't actually listening yet :) Looking at the gen_tcp documentation, it houses a function called listen that takes two arguments: the port on which to listen, and the TCP options. The TCP options is a list of options. We want to say that the data received over the socket will be interpreted as a binary.