How to install Redmon (Redis Control Panel)

What is Redmon?

If you are using Redis-server, having a web-base control panel could be very handy! Redmon is an open-source web-base control panel for Redis-server that is the best possible choice. with Redmon you get GUI, CLI and live monitoring administration.

Check out Redmon on Github

We are assuming that you have root permission, otherwise, you may start commands with “sudo”.

Install RubyGem

Redmon is based on Ruby language, so you have to install Ruby first.

If you are using Debian or Ubuntu:

apt-get install rubygems build-essential

apt-get install ruby2.2-dev

apt-get install libssl-dev

If you are using CentOS:

yum install rubygems build-essential

yum install ruby2.2-dev

yum install libssl-dev

Redmon is available as a gem so you have to install gem too.
For Debian and Ubuntu:

apt-get install gem

For CentOS:

yum install gem

Now you can install Redmon easily with the command below:

gem install redmon

If you have done everything right you probably could start your Redmon by:

redmon

You might get an error like below:

Can't start Redmon::App. port in use? Error: undefined method `start' for Thin::Server:Class

It’s because of your “Thin” version, you have to downgrade your “Thin” to 1.6 it’s a common problem and here is the solution:

gem uninstall thin --version 2.0.0.pre

gem install thin --version 1.6.1

Now try again and start your redmon:

redmon

You can connect to your Redmon panel through your browser by:

http://YOURPUBLICIPADDRESS:4567

Here is your Panel interface:

If you want to start your Redmon service in the background so you can use your session after starting Redmon, you can run this command:

nohup redmon > /dev/null 2>&1&

If you want to run your Redmon as startup you should add the above line to your “rc.local” file.

nano /etc/rc.local

You can get more information about Redmon configuration like setting password etc. you can use the command below:

redmon -h

Outpu example:

Usage: /usr/local/bin/redmon (options)
    -a, --address ADDRESS            The thin bind address for the app (default: 0.0.0.0)
    -b, --base-path BASE_PATH        The base path to expose the service at (default: /)
    -l, --lifespan MINUTES           Lifespan(in minutes) for polled data (default: 30)
    -n, --namespace NAMESPACE        The root Redis namespace (default: redmon)
    -i, --interval SECS              Poll interval in secs for the worker (default: 10)
    -p, --port PORT                  The thin bind port for the app (default: 4567)
    -r, --redis URL                  The Redis url for monitor (default: redis://127.0.0.1:6379, note: password is support, ie redis://:password@127.0.0.1:6379)
    -s, --secure CREDENTIALS         Use basic auth. Colon separated credentials, eg admin:admin.
        --no-app                     Do not run the web app to present stats (default: true)
        --no-worker                  Do not run a worker to collect the stats (default: true)

For example, If you want to set credentials for your client session you have to start Redmon with the command below:

redmon --secure HugeServer:12345