[O’Reilly Media / Infinite Skills] Introduction to CoreOS Training Video [2015, ENG] : Launching A Development CoreOS Cluster : systemd

[email protected] ~ $ sudo su -
core-01 ~ # cd /etc/systemd/system

Пример 1:

core-01 system # vi helloworld.service


[Unit]
Description=Hello World Service
After=docker.service
Requires=docker.service

[Service]
TimeoutStartSec=0
ExecStartPre=-/usr/bin/docker kill hello-world
ExecStartPre=-/usr/bin/docker rm hello-world
ExecStartPre=/usr/bin/docker pull busybox
ExecStart=/usr/bin/docker run --name hello-world busybox /bin/sh -c "while true; do echo Hello World; sleep 1; done"
ExecStop=-/usr/bin/docker rm -f hello-world


[Install]
WantedBy=multi-user.target


# systemctl enable helloworld.service
# systemctl start helloworld.service
# systemctl status helloworld.service

# journalctl -f -u helloworld.service

# systemctl stop helloworld.service


Пример 2:


[Unit]
Description=%n Service
After=docker.service
Requires=docker.service

[Service]
TimeoutStartSec=0
ExecStartPre=-/usr/bin/docker kill %p-%i
ExecStartPre=-/usr/bin/docker rm %p-%i
ExecStartPre=/usr/bin/docker pull busybox
ExecStart=/usr/bin/docker run --name %p-%i busybox /bin/sh -c "while true; do echo Hello from %p-%i running on %H; sleep 1; done"
ExecStop=-/usr/bin/docker rm -f %p-%i

[Install]
WantedBy=multi-user.target


# systemctl start [email protected]service
# journalctl -f -u [email protected]

# systemctl start [email protected]{2..4}.service

# docker ps

# systemctl stop [email protected]{1..4}.service