How to adjust socket descriptors?

Question

I want to know who to adjust quantity of the socket descriptors?

In additi

Answer 1

The solution which worked for me on Ubuntu is this:

First, find the correct rabbitmq-server file. You can do this by running locate rabbitmq-server on the bash prompt.
Then open the file with sudo vim /etc/default/rabbitmq-server. It is a file which will contain the line ulimit -n 4096.
If the line is commented out with a #, uncomment the line.
Then add EOF as the last line of the file.

The file will now appear like this:

# This file is sourced by /etc/init.d/rabbitmq-server. Its primary
# reason for existing is to allow adjustment of system limits for the
# rabbitmq-server process.
#
# Maximum number of open file handles. This will need to be increased
# to handle many simultaneous connections. Refer to the system
# documentation for ulimit (in man bash) for more information.
#
ulimit -n 4096
EOF

Now you have to restart rabbitmq. Don't restart the operating system though.
Locate your rabbitmqctl file and run:
sudo /usr/sbin/rabbitmqctl stop
Then start rabbitmq again either with sudo /usr/sbin/rabbitmqctl start &.

That's it. Now go to the RabbitMQ Browser UI, and you'll see that the number of sockets have increased.