luceos If you ask me this was just someone trying to bash or hack your forum.
Now you have me paranoid lol. I just had an 8 minute outage as well and I havent had any outages in over a month or two...
When I went to my website I saw this error:
Flarum encountered a boot error. Details have been logged to the Flarum log file.
I went into my logs, and this was the latest in the flarum log:
I also took a look at atop and it looks like mysql was taking up a lot of memory...

Anything else I can or should look at? Ironically this occured right after I created a new AMI backup on AWS. I don't think that would have caused this though but I could be wrong.