Questions tagged [erlang]

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rabbitmq modify log format mqtt

I would like to ask if there are ways to modify a log entry on rabbitmq. As I installed a plugin (mqtt) and configure it's logging configuration, I encounter this type of configuration: 2019-08-23 07:...
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0answers
57 views

using kubernetes api to locate pods vs using dns to locate pods

I'm wondering if there's a best practice regards looking up kubernetes pods using the kubernetes API or DNS (A/SRV records) to locate one another. Using a statefulset here - have both API and DNS ...
1
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1answer
162 views

erlang install error: “Requires: libcrypto.so.10(OPENSSL_1.0.2)(64bit)”

I'm trying to get erlang installed so I can installed rabbitMQ. Here's my sequence and error: >yum install erlang Loaded plugins: langpacks, product-id, search-disabled-repos, subscription- ...
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1answer
201 views

Why does Erlang runtime (or RabbitMQ) listen on a random UDP port?

After an update to RabbitMQ 3.7.8 and Erlange 21.1 (centOS 6 server) netstat shows that beam.smp is listening on a random UDP port on all interfaces: ~$ sudo netstat -pnul | grep beam udp 0 ...
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1answer
219 views

eJabberd: room history is erased after server restart

I've successfully deployed a ejabberd server and integrated it with a mobile application. Everything works great, however, every time I restart the server, the history of every room is lost. Actually,...
3
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0answers
299 views

Connecting a local Elixir/Erlang to a running application inside a Docker container

I've got an Elixir application running inside a Docker container (in my laptop). The Elixir application was executed with the following command: iex \ --name test@1.2.3.4 \ --cookie secret \ --...
1
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1answer
486 views

unable to configure ssl for rabbitMQ with web_stomp

I have followed the steps mentioned by this link https://www.rabbitmq.com/ssl.html , since i am using web_stomp i have modified the URL of webstomp to wss://my_url:my_web_stomp_port/ws and i have my ...
2
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2answers
4k views

RabbitMQ : configuration file not found

My rabbitmq-env.conf looks like : root@encoder001 /etc/rabbitmq# cat ./rabbitmq-env.conf CONFIG_FILE=/etc/rabbitmq/rabbitmq.config when I restart , the log said : =INFO REPORT==== 16-Sep-2017::09:...
3
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3answers
6k views

Cannot uninstall incorrect version Erlang on RHEL 6.x

Issue I am setting up a RHEL 6.X server to house my RabbitMQ test environment. I need to install Erlange 16 or higher to work correctly with the latest version of RabbitMQ (3.6.x I believe). ...
1
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1answer
2k views

Rabbit MQ Windows very high CPU with no workload

Erl.exe is sat at 90%+ CPU whilst the rabbit server is basically idle. It's a fresh install on Windows 2012R2, Rabbit version 3.6.6 Nothing in the logs, but I have noticed that the figures for GC / ...
5
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2answers
1k views

How to cluster rabbitmq in aws

I have tried every conceivable combination in an attempt to cluster rabbitmq in an AWS environment. But to recap: Shutdown and removed erlang and rabbit distribution on my local ubuntu 14 Tried the ...
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1answer
420 views

Unable to find a process id [closed]

I have an app in Erlang which I fail to launch: "Protocol: ~tp: the name my_app@my_comp seems to be in use by another Erlang node",["inet_tcp"]} I've tried to figure out the PID of the Erlang to ...
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1answer
888 views

RabbitMQ hanged up

I have single RabbitMQ 3.6.1-1 installed on CentOS 7.2.1511, with Erlang R16B-03.16.el7. Today I cleaned it up: rabbitmqctl stop_app rabbitmqctl force_reset rabbitmqctl start_app It worked for some ...
5
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0answers
454 views

RabbitMQ two node high availability cluster intermittently breaks with Veeam backup jobs

The environment consists of two 2012R2 Virtual Machines running RabbitMQ in high availability (ha-all) on their Queues. I use Veeam to create snapshot backups that are sent offsite as part of the DR ...
0
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1answer
637 views

RabbitMQ memory consumed by Erlang writers, and nothing is paged to disk

I have a case where the total memory used by RabbitMQ is 6.2 GB, and 6.1 GB of which are utilized by Erlang writers. However, I can not find this size paged anywhere on the hard disk. what happens if ...
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1answer
717 views

RabbitMQ CRL Configuration

I've been trying to find available options for configuring CRL checking within RabbitMQ. RabbitMQ in turn seems to rely on Erlang's SSL library. Unfortunately, knowing very little about Erlang, so it ...
1
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1answer
2k views

Rabbitmq {tls_alert,“record overflow”}

I have a RabbitMQ 3.3.5, Erlang R16B03-1 running on rhel7 with firewall and selinux disabled. The ssl part of config is as follows: {ssl_listeners, [15672]}, {ssl_options, [ ...
2
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1answer
4k views

How to Migrate RabbitMQ server to new CentOS 7 server

Does anyone here have any experience with the migration of RabbitMQ(v3.5.3) to new servers? I currently have two RMQ servers in a cluster on old systems and I want to migrate them to new virtual ...
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1answer
379 views

Migrate MUC (multi-user conference) data from Mnesia to MySQL in ejabberd

Ejabberd's mod_muc module supports db_type option, which can be either internal (Mnesia) or odbc (MySQL) to store MUC-related data. Is it possible to migrate from Mnesia to MySQL saving all the ...
1
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1answer
291 views

CouchDB Error log msg

I recently upgraded my server to CouchDB 1.5 and I'm continually seeing this error message in the logs. CouchDB appears to be behaving properly accept for this error. Fri, 14 Feb 2014 19:07:35 GMT] [...
2
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1answer
1k views

Ejabberd can't connect to users

I installed ejabberd on my remote server running centos 6.4 and open all ports required. For example I can access the web admin when i go to http://IP_ADDRES:5280/admin. With the following command I ...
0
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1answer
322 views

Rabbitmq-server status intermittent failures

Rabbitmq-server package from ubuntu precise: 2.7.1-0ubuntu4 sudo service rabbitmq-server status and sudo rabbitmqctl status are flip-flopping between running and not running: ubuntu@juju-cstack-...
3
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2answers
3k views

RabbitMQ Network Partition Error

I am running a RabbitMQ cluster (version 3.0.2, Erlang R15B) with two nodes and they continue to periodically experience a network partition error. They are physically located in the same data center ...
2
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0answers
249 views

ejabberd stringprep error

I install ejabberd from source, it always gives error when I start : =INFO REPORT==== 2013-01-05 09:35:58 === application: ejabberd exited: {bad_return, {{ejabberd_app,start,[...
6
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1answer
3k views

Veewee, Vagrant, Puppet, Erlang and RabbitMQ

I am kinda stuck with a problem I am trying to wrap my head around for days now. Here is what I am doing: By using Veewee, I am creating a VirtualBox image and then I create a Vagrant box from it. ...
2
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1answer
180 views

Installing Yaws server on Ubuntu 12.04 (Using a cloud service)

I'm trying to get a Yaws web server working on a cloud service (Amazon AWS). I've compilled and installed a local copy on the server. My problem is that I can't get Yaws to run while running on either ...
1
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1answer
11k views

RabbitMQ: erl not found

When attempting to use rabbitmqctl, I get the following error: $ which rabbitmqctl /usr/sbin/rabbitmqctl $ sudo rabbitmqctl status /usr/lib/rabbitmq/bin/rabbitmqctl: line 29: exec: erl: not found (/...
6
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1answer
8k views

RabbitMQ Erlang Cookie

I have RabiitMQ running on a CentOS 5.5 box, with Erlang R15B01. RabbitMQ was running just swell until I upgraded to the latest version (2.8.4). When I startup RabbitMQ using the command: /etc/init....
1
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1answer
701 views

Ubuntu 10.04: Unable to Start RabbitMQ Server Post-Installation

After installing RabbitMQ on Ubuntu 10.04 I receive a failure message that the service was unable to start. Any insight into the issue would be greatly appreciated! Below are contents of startup_log ...
5
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0answers
773 views

Unable to get ejabberd prebind to work

I'm trying to get the prebind of BOSH sessions to work. I want to be able to authenticate a user in my CMS and then log him in when he accesses the chat, for this I found https://github.com/...
1
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1answer
394 views

Distributing Erlang binaries to new EC2 instances

I am using tools such as Chef and Puppet in order to bootstrap new EC2 instances. In order to autoscale, I try to keep the install times as fast as possible. For something such as Ruby, I compiled it ...
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1answer
193 views

Securing Erlang / Ubuntu server

I have written a web service in Erlang using mochiweb and jiffy and now face the task of deploying it to production. Since it is going to be open to the public I was wondering how secure Erlang ...
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1answer
3k views

Bad certificate error with RabbitMQ using SSL

I am trying to get RabbitMQ working with SSL on a couple of Gentoo servers. I get the following error in /var/log/rabbitmq/rabbit@...log when I try to connect to the management console using https: ...
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2answers
274 views

Erlang install error on Fedora 13

I am attempting to install RabbitMQ on a Fedora 13 box. This requires Erlang is installed. When I run yum install erlang I get the following messages. Yum seems to indicate that it resolved all the ...
2
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1answer
682 views

strategy for distributing erlang otp nodes behind haproxy

I have a standard erlang application build upon otp principles. I plan to place my erlang nodes in production as explained below: receive all traffic on a public ip (haproxy) haproxy them to one of ...
4
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2answers
188 views

OS parameters tuning for latency improvement

We are trying to improve the average latency of Java proxy application. The Java application receives a message from a client and proxies it to a necessary server. The protocol is binary, ...
3
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1answer
454 views

Has anyone seen this kernel panic? What to do? (Ubuntu 10.04 LTS)

The last few weeks, we've been getting this kernel panic on one machine or another out of a cluster of 15, about one every four days. The machines are all running Ubuntu 10.04 LTS with Erlang R13B03; ...
4
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1answer
3k views

Turn off EPMD listening port (4369) in Ubuntu / RabbitMQ

I'm trying to secure an install of RabbitMQ, and am not sure how to secure the Erlang EPMD port. I only have one machine running anything, so I'd like to make it listen only on the loopback device. ...
3
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3answers
362 views

Choosing between Debian and Ubuntu

Debian or Ubuntu for online multiplayer game cluster? (latest versions both) I plan to run: Erlang apps (ejabberd + modules) with many-many connection Java apps for business logic Memcached with ...
1
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1answer
564 views

Ephemeral Port Confusion (plus some erlang)

So, my understanding of the ephemeral port system is that there's a tuple of four values identifying each connection: {source ip, source port, dest ip, dest port}, with source port being one of the ...
0
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1answer
867 views

Couchdb failing test suite on Linux

I've been trying to install CouchDB on my webfusion virtual server. I followed the latest instructions from the webfusion forum (see: http://forum.webfaction.com/viewtopic.php?id=2355 ) and it runs (...
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2answers
2k views

How can I monitor a JMX based system from a non JMX based client?

I want to monitor a weblogic system which uses JMX via an Erlang client. How can I do this? (Note that I cannot use SMTP as it is disabled and cannot be enabled on the server)
1
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1answer
176 views

Can YAWS run in multi-machine mode?

I know Erlang has the ability to run across multiple machines. Can YAWS also do this? Would there be any advantage?