Goaccess: Running two daemonized real-time-http (port 7890 & 7891): output behaves strangely

[70sErrPort]

I’m hosting multiple websites on one VPS. I’d like to use GoAccess to offer stats on all of the websites, individually, and just run the daemons pretty much 24/7. I figured to start out I’d just run two at a time, to make sure it works.

So as of right now I’ve got two GoAccess processes going at once. Here is the command I used:

[root@localhost ~]# goaccess /var/log/httpd/main.site-access.log* --log-format=COMBINED --real-time-html --daemonize --port=7890 --ssl-cert=/etc/letsencrypt/live/www.main.site/fullchain.pem --ssl-key=/etc/letsencrypt/live/www.main.site/privkey.pem -o /var/www/mainsite/main.site/panels/main.site-stats.html
[root@localhost ~]# goaccess /var/log/httpd/secondary-access.log* --log-format=COMBINED --real-time-html --daemonize --port=7891 --ssl-cert=/etc/letsencrypt/live/www.main.site/fullchain.pem --ssl-key=/etc/letsencrypt/live/www.main.site/privkey.pem -o /var/www/mainsite/main.site/panels/secondary.site-stats.html

Netstat says it’s working as planned:

[root@localhost ~]# netstat -tlpn | grep goaccess
tcp        0      0 0.0.0.0:7890            0.0.0.0:*               LISTEN      306026/goaccess     
tcp        0      0 0.0.0.0:7891            0.0.0.0:*               LISTEN      306002/goaccess

They've been running for about 24 hours now. Everything looks and works fine when you open one html page: the page updates real-time, it's showing stats for the correct website, etc, etc. But it starts to behave strangely if someone is looking at both at the same time.

If someone has a GoAccess output page open in their web browser, and a second GoAccess output page gets opened by someone else, one of three things happens (seemingly at random):

1. The output on the first page suddenly switches to the other website (the wrong set of stats)
2. The output of the page goes a little haywire and seems to _combine_ the stats of both pages
3. Nothing happens and both pages stay on the correct set of stats (this is exceedingly rare, however)

Also to note: if someone visits one of the websites while both browsers are open, and the logs get updated, then one of the open html pages will update correctly (apparently at random) and the other will behave as per 1, 2 and 3 above (also apparently at random). So if someone visits secondary.site, sometimes the output page for main.site will switch to secondary.site while the output page for secondary.site might go haywire and combine both stats, or else stay static and not update at all.

I have tried this with different machines / different IP addresses accessing both html output pages, and with a third machine / IP address visiting the website (to trigger an access log update).

So is this a bug? Or have I set it up incorrectly?

Or am I just asking GoAccess to do something it's not built for?

[allinurl]

Thanks for bringing this up and the detailed explanation. Seems like you are using the same named pipe. Please take a look at this post for details on running multiple instances.

[allinurl]

Let me know if that fixes the issue for you.

[70sErrPort]

That did the trick! I was prepared to just do a once-per-minute cron job to update static html pages, but this is far more satisfying.

Thanks for the great application, and for the great support!

[allinurl]

Glad that worked :)