On Sat, 2024-09-21 at 13:16 +0100, Patrick O'Callaghan wrote:
> I assume there's a systemd mechanism for getting httpd to wait for the
> network before resuming, but I've no idea how to accomplish this.
I run Apache on my CentOS PC, and although I don't suspend it, I don't
ever recall Apache not working after a cold/warm boot. I have also run
it on Fedora (in the past) and not noticed a problem, either.
This is its /usr/lib/systemd/system/httpd.service file:
--------------- begin paste ------------------
[Unit]
Description=The Apache HTTP Server
After=network.target remote-fs.target nss-lookup.target
Documentation=man:httpd(8)
Documentation=man:apachectl(8)
[Service]
Type=notify
EnvironmentFile=/etc/sysconfig/httpd
ExecStart=/usr/sbin/httpd $OPTIONS -DFOREGROUND
ExecReload=/usr/sbin/httpd $OPTIONS -k graceful
ExecStop=/bin/kill -WINCH ${MAINPID}
# We want systemd to give httpd some time to finish gracefully, but still want
# it to kill httpd after TimeoutStopSec if something went wrong during the
# graceful stop. Normally, Systemd sends SIGTERM signal right after the
# ExecStop, which would kill httpd. We are sending useless SIGCONT here to give
# httpd time to finish.
KillSignal=SIGCONT
PrivateTmp=true
[Install]
WantedBy=multi-user.target
--------------- end paste -----------------------
I'd imagine the "After=" section near the top is customisable to make
it happen after *your* network is actually working.
NB: My server PC runs all my various LAN servers, it's also the DNS
and DHCP servers, and its network is manually configured with fixed
IPs. So it's own network comes up quickly, and can answer all the
network queries that servers might want to make as they start up.
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