Recently apache2 fails to start at boot, but can be started OK manually

[Colin Law]

On Wed, 27 Oct 2021 at 14:44, Chris Green <cl at isbd.net> wrote:
> ...
> Yes, here's the whole file:-
>
>     root at esprimo# more ./systemd/system/multi-user.target.wants/apache2.service
>     [Unit]
>     Description=The Apache HTTP Server
>     After=network.target remote-fs.target nss-lookup.target
>     Documentation=https://httpd.apache.org/docs/2.4/
>
>     [Service]
>     Type=forking
>     Environment=APACHE_STARTED_BY_SYSTEMD=true
>     ExecStart=/usr/sbin/apachectl start
>     ExecStop=/usr/sbin/apachectl graceful-stop
>     ExecReload=/usr/sbin/apachectl graceful
>     KillMode=mixed
>     PrivateTmp=true
>     Restart=on-abort
>
>     [Install]
>     WantedBy=multi-user.target
>

Have you configured apache to bind to a specific address?  Is so then
see https://bugs.launchpad.net/ubuntu/+source/apache2/+bug/1786675

Colin