Centos7 note

systemd

systemd & sysvinit

How systemd convert sysvinit?

Start the service: service foo start. After this, systemd-sysv-generator will generate this file /run/systemd/generator.late/foo.service

This is censu-client's unit-file.

# Automatically generated by systemd-sysv-generator

[Unit]
Documentation=man:systemd-sysv-generator(8)
SourcePath=/etc/rc.d/init.d/sensu-client
Description=LSB: Sensu monitoring framework client
Before=runlevel2.target runlevel3.target runlevel4.target runlevel5.target shutdown.target
After=remote-fs.target network-online.target network-online.target
Wants=network-online.target
Conflicts=shutdown.target

[Service]
Type=forking
Restart=no
TimeoutSec=5min
IgnoreSIGPIPE=no
KillMode=process
GuessMainPID=no
RemainAfterExit=yes
ExecStart=/etc/rc.d/init.d/sensu-client start
ExecStop=/etc/rc.d/init.d/sensu-client stop

/etc/sysctl.d

apply
# sysctl --system

vm.swappiness tuned ???

@ boot secuence, tuned runs after sysctl. So, your vm.swappiness conf via sysctl, overwriteen by tuned.