URGENT: unreachable web server on Ubuntu 18.04 running on EC2/AWS

[M. Fioretti]

On Thu, Feb 20, 2020 12:36:18 PM -0500, Ken D'Ambrosio wrote:
> On 2020-02-20 12:27, M. Fioretti wrote:
> 
> > What am I missing? Surely something embarrassing, but since I'm in a
> > bit of a hurry, any help is welcome.
> 
> You sure Apache is actually *running*?  What happens if you do this (as
> root, from the host):
> lsof -P -i -n | grep ":80"
> ?

Hi Ken,

lsof returns nothing, see below. One second before reading your
question, I had also found with netstat that apache2 is only doing
tcp6, see also below, after output of systemctl

What next? (I continue to investigate on my side, of course, but the
sooner I get this fixed, the better...)

#> sudo systemctl status apache2
● apache2.service - The Apache HTTP Server
   Loaded: loaded (/lib/systemd/system/apache2.service; enabled; vendor preset: enabled)
     Drop-In: /lib/systemd/system/apache2.service.d
                └─apache2-systemd.conf
		   Active: active (running) since Thu 2020-02-20 17:40:29 UTC; 7min ago
		     Process: 878 ExecStart=/usr/sbin/apachectl start (code=exited, status=0/SUCCESS)
		      Main PID: 959 (apache2)
		          Tasks: 55 (limit: 1152)
			     CGroup: /system.slice/apache2.service
			                ├─959 /usr/sbin/apache2 -k start
					           ├─960 /usr/sbin/apache2 -k start
						              └─961 /usr/sbin/apache2 -k start

Feb 20 17:40:28 ip-address systemd[1]: Starting The Apache HTTP Server...
Feb 20 17:40:29 ip-address systemd[1]: Started The Apache HTTP Server.

NOTE: THE ip-address above is NOT the ip4 public address listed in the aws control panel

sudo netstat -tlpn | grep :80
tcp6       0      0 :::80                   :::*                    LISTEN      959/apache2

#> lsof -P -i -n | grep ":80"
#>