Nginx Reboot problem (heads-up)

Virtualmin
29

I have found a scenario where the solution I proposed is not necessarily sufficient to allow nginx to start on boot.

IF
your server does not know its IPv4 and IPv6 address before starting to boot up, because it is using an ‘elastic IP service’ (such as from AWS)
THEN
the network-online.target solution is not guaranteed to work.

You may be using an ‘elastic IP service’ without even realising it or being specically told.

I have found the following works:
Add the following two lines into /etc/sysctl.conf

net.ipv4.ip_nonlocal_bind = 1
net.ipv6.ip_nonlocal_bind = 1

Run command sysctl -p /etc/sysctl.conf

Having an ‘elastic IP service’, from a start-up perspective, is like an unexpected knock at the door.

In fact, this may be a sufficient alternative solution.

Some additional problems with nginx in the recently released Virtualmin 7.3, with fixes, are documented in

and in