Change systemd execstart to yml conf

[P4R4DiSi4C]

Currently, '.conf' is hardcoded in the following file: https://github.com/fluent/fluent-bit/blob/master/init/systemd.in
Is there any plan to change it to '.yml' so we avoid the need of overriding the systemd configuration ?

[Unit]
Description=@FLB_PROG_NAME@
Documentation=https://docs.fluentbit.io/manual/
Requires=network.target
After=network.target

[Service]
Type=simple
EnvironmentFile=-/etc/sysconfig/@FLB_OUT_NAME@
EnvironmentFile=-/etc/default/@FLB_OUT_NAME@
ExecStart=@CMAKE_INSTALL_FULL_BINDIR@/@FLB_OUT_NAME@ -c /@CMAKE_INSTALL_SYSCONFDIR@/@FLB_OUT_NAME@/@[email protected]
Restart=always

[Install]
WantedBy=multi-user.target

[patrick-stephens]

Yes although we will have to be careful of impact on existing users who may be relying on overriding the conf file. It would have to be documented explicitly and maybe as a breaking change e.g. in 4.0 release @edsiper ?

YAML format was only completed for 3.2 as well so previous versions are still supported.

[chadmyers]

@P4R4DiSi4C How do you override the system configuration to use yaml?