Resolve DHCPD and HTTPD startup failures with Ansible: 
Last year, I had a problem: HTTPD (the Apache web server) would not start on a reboot or cold boot. To fix it, I added an override file, /etc/systemd/system/httpd.service.d/override.conf. It contained the following statements to delay HTTPD’s startup until the network is properly started and online. (If you’ve read my previous articles, you’ll know that I use NetworkManager and systemd, not the old SystemV network service and start scripts).
read more: Opensource.com dboth
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