Get graylog running on port 80 instead of 9000

If you are building a single service server (and if you are doing anything with log files the chances are that you are... then you might want to get Graylog working on a convenient port, like 80 rather than the default 9000.

By default ports below 1024 are privileged and normal applications are not allowed to run on them.

If you search the internet there are loads of conversations about how to do it the right way... well that is too complicated for me, so here's a quick and dirty way to get it set up.

Just run the service using the root user rather than the graylog user - yeah I know, all kinds of a bad idea if this is externally facing, but if it's internal then I think it'll be alright.

In Ubuntu:

sudo vim /etc/graylog/server/server.conf

Change the port number for rest_listen_uri and web_listen_uri to 80

sudo vim  /usr/lib/systemd/system/graylog-server.service

Change
User=graylog to User=root
Group=graylog to Group=root

Exit and run
systemctl deamon-reload
to apply the changes you just made