Difference between revisions of "Linux: SystemD"
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==/etc/systemd/system/example.service== | ==/etc/systemd/system/example.service== | ||
| − | + | [Unit] | |
Description=Tenkaichi Vegeta-server (Tentacle) | Description=Tenkaichi Vegeta-server (Tentacle) | ||
After=network.target | After=network.target | ||
| − | + | ||
[Service] | [Service] | ||
User=tenkaichi | User=tenkaichi | ||
| Line 42: | Line 42: | ||
RestartSec=3 | RestartSec=3 | ||
| − | ExecStart=/usr/local/bin/tentacle_server -o -a ${SERVER_IP} -p ${PORT} -s ${INPUT_DIR} -v -m ${MAX_SIZE} | + | ExecStart=/usr/local/bin/tentacle_server -o -a ${SERVER_IP} -p ${PORT} -s ${INPUT_DIR} -v -m ${MAX_SIZE} -e ${SSL_CERT} -k ${SSL_CERTKEY} |
| − | |||
[Install] | [Install] | ||
WantedBy=multi-user.target | WantedBy=multi-user.target | ||
| − | + | ||
==Automatic restart== | ==Automatic restart== | ||
| Line 59: | Line 58: | ||
==Wait Online== | ==Wait Online== | ||
<nowiki>[Unit] | <nowiki>[Unit] | ||
| − | + | Wants=network-online.target | |
| − | + | After=network.target network-online.target</nowiki> | |
===With NetworkManager=== | ===With NetworkManager=== | ||
systemctl enable NetworkManager-wait-online | systemctl enable NetworkManager-wait-online | ||
| Line 66: | Line 65: | ||
==ExecStart examples== | ==ExecStart examples== | ||
| − | ====== Gunicorn ====== | + | ======Gunicorn====== |
ExecStart=/virtualenv/path/bin/gunicorn -w3 --timeout 300 --access-logfile /var/log/gunicorn/app-access.log --error-logfile /var/log/gunicorn/app-error.log --bind unix:/sockets/app-socket.sock App.wsgi | ExecStart=/virtualenv/path/bin/gunicorn -w3 --timeout 300 --access-logfile /var/log/gunicorn/app-access.log --error-logfile /var/log/gunicorn/app-error.log --bind unix:/sockets/app-socket.sock App.wsgi | ||
| − | ==== Flask (superset) ==== | + | ====Flask (superset)==== |
<syntaxhighlight lang="text"> | <syntaxhighlight lang="text"> | ||
ExecStart=/home/superset/.virtualenvs/superset/bin/gunicorn -w 3 -k gevent --timeout 120 -b unix:/home/superset/.superset/superset.sock --limit-request-line 0 --limit-request-field_size 0 --statsd-host localhost:8125 superset:app | ExecStart=/home/superset/.virtualenvs/superset/bin/gunicorn -w 3 -k gevent --timeout 120 -b unix:/home/superset/.superset/superset.sock --limit-request-line 0 --limit-request-field_size 0 --statsd-host localhost:8125 superset:app | ||
</syntaxhighlight> | </syntaxhighlight> | ||
Latest revision as of 11:01, 29 March 2019
List all running services[edit]
sytemctl watch "ps -ef|grep service"
Start/stop or enable/disable services[edit]
systemctl start foo.service systemctl stop foo.service systemctl restart foo.service systemctl status foo.service systemctl enable foo.service systemctl disable foo.service
Check if service is enabled[edit]
systemctl is-enabled foo.service; echo $?
Source: Useful SystemD Commands
Log to syslog[edit]
Use the following properties in your systemd service unit file:
StandardOutput=syslog StandardError=syslog SyslogIdentifier=<your program identifier> # without any quote
Then, assuming your distribution is using rsyslog to manage syslogs, create a file in /etc/rsyslog.d/<new_file>.conf with the following content:
if $programname == '<your program identifier>' then /path/to/log/file.log if $programname == '<your program identifier>' then ~
/etc/systemd/system/example.service[edit]
[Unit]
Description=Tenkaichi Vegeta-server (Tentacle)
After=network.target
[Service]
User=tenkaichi
Group=tenkaichi
WorkingDirectory=/home/tenkaichi/vegetas-server
EnvironmentFile=/tenkaichi/vegeta-server/cfg/environment.cfg
StandardOutput=syslog
StandardError=syslog
SyslogIdentifier=Vegeta-Tentacle
Restart=always
RestartSec=3
ExecStart=/usr/local/bin/tentacle_server -o -a ${SERVER_IP} -p ${PORT} -s ${INPUT_DIR} -v -m ${MAX_SIZE} -e ${SSL_CERT} -k ${SSL_CERTKEY}
[Install]
WantedBy=multi-user.target
Automatic restart[edit]
Add the following lines to your service file at Service block
[Service] ... Restart=always RestartSec=3 ...
Wait Online[edit]
[Unit] Wants=network-online.target After=network.target network-online.target
With NetworkManager[edit]
systemctl enable NetworkManager-wait-online
ExecStart examples[edit]
Gunicorn[edit]
ExecStart=/virtualenv/path/bin/gunicorn -w3 --timeout 300 --access-logfile /var/log/gunicorn/app-access.log --error-logfile /var/log/gunicorn/app-error.log --bind unix:/sockets/app-socket.sock App.wsgi
Flask (superset)[edit]
ExecStart=/home/superset/.virtualenvs/superset/bin/gunicorn -w 3 -k gevent --timeout 120 -b unix:/home/superset/.superset/superset.sock --limit-request-line 0 --limit-request-field_size 0 --statsd-host localhost:8125 superset:app