systemd

问题 I need to create a daemon process which should be started through init.d. I have experience of creating the package and installing it with appropriate start/stop scripts managed through init.d. However recently it is being managed through systeemd. Please let me know if there is basic tutorial to understand it and how to package so that installation of RPM should be as per systemd framework. 回答1: Everything you need should be here on Fedora's page, under Packaging:Systemd. 来源： https:/

问题 I have a service in **/etc/systemd/sysem/horses.service** [Unit] Description=Description for sample script goes here After=rc-local.service [Service] Type=simple ExecStart=/opt/horses/startSanic2.sh TimeoutStartSec=0 Environment="REDIS_HOST=192.168.150.220" Environment="REDIS_PORT=6379" [Install] WantedBy=default.target It runs the shell script with this code: #!/bin/bash gunicorn horses.server:app --bind 0.0.0.0:9000 --worker-class sanic.worker.GunicornWorker --reload I succesfully run it

问题 I have celery running locally by just running celery -A proj -l info (although I don't even know if I should be using this command in production), and I want to get celery running on my production web server every time nginx starts. The init system is systemd 回答1: Create a service file like this celery.service [Unit] Description=celery service After=network.target [Service] PIDFile=/run/celery/pid User=celery Group=celery RuntimeDirectory=/path/to/project WorkingDirectory=/path/to/project

问题 I've been working around with Python & Django Framework for a while with Ubuntu 16.01. Since I used Django with Q system (Celery) and some others Enhancement Apps. When I try to run all the apps each time, I need to run development server "{python manage.py runserver}", then running Celery Worker "{celery -A filename worker -l info}". Each time I working, it takes me minutes to enter the directory and start it up. I surf around and come up with the idea of setup it as service. Example,

问题 I have wrote an application with Java / C / Python who works well since a few weeks and executed in Bash by: source ../frozen-graph-env/bin/activate && /usr/bin/java -jar test.jar --start pip freeze of my environment: absl-py==0.2.2 astor==0.6.2 bleach==1.5.0 gast==0.2.0 grpcio==1.12.1 html5lib==0.9999999 Markdown==2.6.11 numpy==1.14.5 pkg-resources==0.0.0 protobuf==3.6.0 six==1.11.0 tensorboard==1.6.0 tensorflow-gpu==1.6.0 termcolor==1.1.0 Werkzeug==0.14.1 The goal now is to execute the

问题 How do I kill the workers when I reboot the server and get the same effect as the following statement: pkill -9 -f 'celery worker' From the celery documentation: If the worker won’t shut down after considerate time, for being stuck in an infinite-loop or similar, you can use the KILL signal to force terminate the worker: But I am starting as a systemd service and have the following config to start it using the following systemd unit file: [Unit] Description=Celery Service After=network.target

问题 It is possible to use systemd's manager via dbus to control services, e.g: Starting a systemd service via python using this: import dbus sysbus = dbus.SystemBus() systemd1 = sysbus.get_object('org.freedesktop.systemd1', '/org/freedesktop/systemd1') manager = dbus.Interface(systemd1, 'org.freedesktop.systemd1.Manager') job = manager.RestartUnit('test.service', 'fail') However, systemd can also handle user's service files with the --user flag, e.g.: systemctl --user start test.service How can

问题 I am working on a project of embedded product with a BeagleBone Black (BBB). I also need a touch screen to display information and for inputs. As I also need the 5v power to add a webcam on the usb, I couldn't use the built-in battery capabilities of the BBB which has no voltage booster. I found a cape that does what I want: PowerCape by AndiceLabs. For the screen, I am using mainly the LCD4 by circuitco but also the 4DCAPE-43T by 4D systems, which I think are exactly identical, and so the

问题 On a CentOS 7 server, I have installed Python 3.6 via SCL. ( https://www.softwarecollections.org/en/scls/rhscl/rh-python36/) I have this line in .bashrc to enable SCL's Python 3.6 source scl_source enable rh-python36 I have installed pipenv: pip install --user pipenv I run Python programs via the command line: pipenv run python myprogram.py All these work great. I have a Flask application that uses the user's pipenv. I am trying to create a systemd unit file to start/stop/reload the Flask web

问题 I have a service , and I would like to have it create logs for the journald daemon in certain cases. So far, I have not been able to find any instructions on how to do so. Am I misunderstanding the intended use of the journal ? Or is it something really obvious that I am missing? Any help would be appreciated. 回答1: If you have a service, you write your log to standard error . (It's even available as a stream named std::clog in C++, with more "log-like" semantics than std::cerr .) That's it.