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. 74.6.168.253 - - [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.
Versions are:
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?