What features/integrations make sense for a proxy with systemd? I'd assume it's only a unit that comes with the package, but that "-Ws" makes me wonder if there're deeper integrations.
In the future this could be extended to support systemd's socket passing and status messages. The latter allowing you to show a short string in `systemctl status haproxy`. See this example for php-fpm:
[root@example~]systemctl status php7.0-fpm.service
● php7.0-fpm.service - The PHP 7.0 FastCGI Process Manager
Loaded: loaded (/lib/systemd/system/php7.0-fpm.service; enabled)
Active: active (running) since Sat 2017-11-25 13:28:22 CET; 1 day 8h ago
Docs: man:php-fpm7.0(8)
Main PID: 4624 (php-fpm7.0)
Status: "Processes active: 3, idle: 29, Requests: 1203613, slow: 545, Traffic: 10.1req/sec"
*snip*
[1] https://www.freedesktop.org/software/systemd/man/sd_notify.h...
I reported it and was told it might not affect 1.8 since the systemd-wrapper is removed there, so gonna give this a try soon. See this thread: https://www.mail-archive.com/haproxy@formilux.org/msg27404.h...
(And I switched to only doing a reload notify in Ansible together with the hard-stop-after option in haproxy which is OK for me as well in 1.7)