2812 port not work for monit

In your netstat output, we can see that port 2812 is listening on localhost (127.0.0.1):

tcp        0      0 127.0.0.1:2812          0.0.0.0:*               LISTEN      3390/monit

In order to make it accessible from the outside, we must edit the file /etc/monit/monitrc and find the section that looks like:

## Monit has an embedded web server which can be used to view status of
## services monitored and manage services from a web interface. See the
## Monit Wiki if you want to enable SSL for the web server.
#
# set httpd port 2812 and
#    use address localhost  # only accept connection from localhost
#    allow localhost              # allow localhost to connect to the server and
#   allow admin:moinit        # require user 'admin' with password 'monit'

and change it to look like:

set httpd port 2812 and
   use address your.ip.address  # only accept connection from localhost
   allow 0.0.0.0/0.0.0.0        # allow localhost to connect to the server and
   allow admin:a_password      # require user 'admin' with password 'monit'

For the changes to take effect, run sudo reload monit

In your netstat output, we can see that port 2812 is listening on localhost (127.0.0.1):

tcp        0      0 127.0.0.1:2812          0.0.0.0:*               LISTEN      3390/monit

In order to make it accessible from the outside, we must edit the file /etc/monit/monitrc and find the section that looks like:

## Monit has an embedded web server which can be used to view status of
## services monitored and manage services from a web interface. See the
## Monit Wiki if you want to enable SSL for the web server.
#
# set httpd port 2812 and
#    use address localhost  # only accept connection from localhost
#    allow localhost              # allow localhost to connect to the server and
#   allow admin:moinit        # require user 'admin' with password 'monit'

and change it to look like:

set httpd port 2812 and
   use address your.ip.address  # only accept connection from localhost
   allow 0.0.0.0/0.0.0.0        # allow localhost to connect to the server and
   allow admin:a_password      # require user 'admin' with password 'monit'

For the changes to take effect, run sudo reload monit

Hi,

The problem here is that monit is listening on the loopback interface (127.0.0.1) so it’s not accessible externally. To fix that, you need to configure it to listen on the public interface (your droplet’s public IP address) instead.

Edit /etc/monit/monitrc and replace use address 127.0.0.1 with use address 12.34.56.789 where 12.34.56.789 is your droplet’s IP address.

Then, reload monit:

sudo reload monit