Gunicorn reload Systemd

Escrito el 2022-09-18 por Alberto Ferrer
Tiempo de lectura: 4 minuto(s)
Etiquetas: gunicorn systemd python linux

Recargar la configuración o cambios de Gunicorn mediante Systemd.

Se agregan estas las lineas ExecReload y ExecStop al "unit" de systemd.

El siguiente articulo describe la utilización y otros temas:

    [alberto@barrahome barrahome-flask]$ cat /etc/systemd/system/barrahome.service
    [Unit]
    Description=Barrahome web application
    After=network.target

    [Service]
    User=alberto
    Group=alberto
    WorkingDirectory=/home/alberto/barrahome-flask
    ExecStart=/usr/bin/python3 /usr/bin/gunicorn  --bind 127.0.0.1:8000 website:app --pid=barrahome.pid
    ExecReload = /bin/kill -s HUP $MAINPID
    ExecStop = /bin/kill -s TERM $MAINPID

    [Install]
    WantedBy=multi-user.target
    [alberto@barrahome barrahome-flask]$

Luego ejecutamos:

    [alberto@barrahome barrahome-flask]$ sudo systemctl daemon-reload
    [alberto@barrahome barrahome-flask]$ sudo systemctl reload barrahome

Verificamos si se ejecuto:

    [alberto@barrahome barrahome-flask]$ sudo systemctl status barrahome
    ● barrahome.service - Barrahome web application
       Loaded: loaded (/etc/systemd/system/barrahome.service; enabled; vendor preset: disabled)
       Active: active (running) since Sun 2022-09-18 23:06:14 UTC; 13min ago
     Main PID: 26783 (python3)
        Tasks: 2 (limit: 24844)
       Memory: 35.4M
       CGroup: /system.slice/barrahome.service
               ├─26783 /usr/bin/python3 /usr/bin/gunicorn --bind 127.0.0.1:8000 website:app --pid=barrahome.pid
               └─26849 /usr/bin/python3 /usr/bin/gunicorn --bind 127.0.0.1:8000 website:app --pid=barrahome.pid

    Sep 18 23:06:14 barrahome python3[26783]: [2022-09-18 23:06:14 +0000] [26783] [INFO] Starting gunicorn 20.0.4
    Sep 18 23:06:14 barrahome python3[26783]: [2022-09-18 23:06:14 +0000] [26783] [INFO] Listening at: http://127.0.0.1:8000 (26783)
    Sep 18 23:06:14 barrahome python3[26783]: [2022-09-18 23:06:14 +0000] [26783] [INFO] Using worker: sync
    Sep 18 23:06:14 barrahome python3[26788]: [2022-09-18 23:06:14 +0000] [26788] [INFO] Booting worker with pid: 26788
    Sep 18 23:08:06 barrahome systemd[1]: Reloading Barrahome web application.
    Sep 18 23:08:06 barrahome python3[26783]: [2022-09-18 23:08:06 +0000] [26783] [INFO] Handling signal: hup
    Sep 18 23:08:06 barrahome python3[26783]: [2022-09-18 23:08:06 +0000] [26783] [INFO] Hang up: Master
    Sep 18 23:08:06 barrahome systemd[1]: Reloaded Barrahome web application.
    Sep 18 23:08:06 barrahome python3[26788]: [2022-09-18 23:08:06 +0000] [26788] [INFO] Worker exiting (pid: 26788)
    Sep 18 23:08:06 barrahome python3[26849]: [2022-09-18 23:08:06 +0000] [26849] [INFO] Booting worker with pid: 26849
    [alberto@barrahome barrahome-flask]$

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