I've done several installs of webmin/virtualmin -- but this is the only one behaving this way. In short, around 6:30am on Sunday mornings, Apache shuts down. And it does so, apparently, without log entries indicating an issue.
There's NO entry in the apache error log, and the is a GET entry as the last entry in the access log. 18.104.22.168 - - [19/Aug/2018:06:25:06 -0700] "GET /scanner-list-page/22/?;amp;amp;Path=/&;amp;amp;Version=0 HTTP/1.1" 200 19984 "-" "Mozilla/5.0 (compatible; Yahoo! Slurp; http://help.yahoo.com/help/us/ysearch/slurp) sieve-gq1/1534685106-0"
That URL works just fine if I hit it manually.
I see nothing in crontab for that time.
There was a similar post to this ... nine years ago ... at https://www.virtualmin.com/comment/800727#comment-800727 -- but I'm not sure if it's the same or not.
Operating system Ubuntu Linux 16.04.4
Webmin version 1.891
Usermin version 1.741
Virtualmin version 6.03
Theme version Authentic Theme 19.19 Kernel and CPU Linux 4.17.17-x86_64-linode116 on x86_64 Processor information Intel(R) Xeon(R) CPU E5-2680 v2 @ 2.80GHz, 8 cores
Running processes 237 CPU load averages 2.04 (1 min) 1.37 (5 mins) 1.19 (15 mins) Real memory 2.93 GB used / 30.66 GB total
Virtual memory 0 bytes used / 500 MB total Local disk space 34.55 GB used / 12 GB free / 46.55 GB total
Anyone have any ideas?