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systemd: PID file /var/run/nginx.pid not readable (yet?) after start.

Gena Makhomed
November 21, 2017 03:48PM
Здравствуйте, All!

nginx установлен из официального репозитория nginx.org, CentOS 7.4

В логах вот такое наблюдается при перезапуске nginx 1.13.6:

systemd: Starting nginx - high performance web server...
nginx: nginx: the configuration file /etc/nginx/nginx.conf syntax is ok
nginx: nginx: configuration file /etc/nginx/nginx.conf test is successful
systemd: Failed to read PID from file /var/run/nginx.pid: Invalid argument
systemd: Started nginx - high performance web server.

И вот такое при запуске nginx 1.13.7:

systemd: Starting nginx - high performance web server...
systemd: PID file /var/run/nginx.pid not readable (yet?) after start.
systemd: Started nginx - high performance web server.

Как это можно победить, чтобы в логах такого не было?

Рекомендуют вот такой workaround: https://stackoverflow.com/a/42084804
И еще вот такое нашлось заодно: https://stackoverflow.com/a/42555993

Но это наверное неправильно будет, добавлять sleep 0.1 в юнит-файл?

Обе эти ошибки возникают в systemd функции service_load_pid_file()
https://github.com/systemd/systemd/blob/master/src/core/service.c#L815
Когда systemd не может прочитать pid-файл.

Насколько я понял из комментариев в функции service_enter_start()
https://github.com/systemd/systemd/blob/master/src/core/service.c#L1909

/* For forking services we wait until the start
* process exited. */

И в функции service_sigchld_event():
https://github.com/systemd/systemd/blob/master/src/core/service.c#L2959

/* Forking services may occasionally move to a new PID.
* As long as they update the PID file before exiting the old
* PID, they're fine. */

Systemd считает что сервис запустился
после того как start process exited ?

А у nginx получается так, что start process exited,
а pid файл еще не создан и это создает проблемы systemd?

Можно ли как-то исправить поведение nginx,
чтобы systemd не флудил в логи сообщениями об ошибках?

--
Best regards,
Gena

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Subject Author Posted

systemd: PID file /var/run/nginx.pid not readable (yet?) after start.

Gena Makhomed November 21, 2017 03:48PM

Re: systemd: PID file /var/run/nginx.pid not readable (yet?) after start.

Maxim Dounin November 22, 2017 12:44PM

Re: systemd: PID file /var/run/nginx.pid not readable (yet?) after start.

Gena Makhomed November 23, 2017 08:52AM

Re: systemd: PID file /var/run/nginx.pid not readable (yet?) after start.

Maxim Dounin November 23, 2017 10:40AM

Re: systemd: PID file /var/run/nginx.pid not readable (yet?) after start.

Gena Makhomed November 23, 2017 11:30AM

Re: systemd: PID file /var/run/nginx.pid not readable (yet?) after start.

Igor Sysoev November 23, 2017 11:46AM

Re: systemd: PID file /var/run/nginx.pid not readable (yet?) after start.

Maxim Dounin November 23, 2017 12:18PM

Re: systemd: PID file /var/run/nginx.pid not readable (yet?) after start.

Gena Makhomed November 23, 2017 12:34PM

Re: systemd: PID file /var/run/nginx.pid not readable (yet?) after start.

Maxim Dounin November 23, 2017 12:14PM

Re: systemd: PID file /var/run/nginx.pid not readable (yet?) after start.

Gena Makhomed November 23, 2017 02:02PM

Re: systemd: PID file /var/run/nginx.pid not readable (yet?) after start.

Maxim Dounin November 23, 2017 04:02PM

Re: systemd: PID file /var/run/nginx.pid not readable (yet?) after start.

Gena Makhomed November 23, 2017 06:14PM

Re: systemd: PID file /var/run/nginx.pid not readable (yet?) after start.

Maxim Dounin November 23, 2017 11:14PM

Re: systemd: PID file /var/run/nginx.pid not readable (yet?) after start.

Evgeniy Berdnikov November 24, 2017 03:08AM

Re: systemd: PID file /var/run/nginx.pid not readable (yet?) after start.

Vadim A. Misbakh-Soloviov November 24, 2017 04:18AM

Re: systemd: PID file /var/run/nginx.pid not readable (yet?) after start.

Maxim Dounin November 24, 2017 08:00AM

Re: systemd: PID file /var/run/nginx.pid not readable (yet?) after start.

Gena Makhomed November 24, 2017 06:32AM

Re: systemd: PID file /var/run/nginx.pid not readable (yet?) after start.

Vadim A. Misbakh-Soloviov November 24, 2017 06:38AM

Re: systemd: PID file /var/run/nginx.pid not readable (yet?) after start.

Konstantin Tokarev November 24, 2017 06:46AM

Re: systemd: PID file /var/run/nginx.pid not readable (yet?) after start.

Pavel V. November 24, 2017 07:00AM

Re: systemd: PID file /var/run/nginx.pid not readable (yet?) after start.

Maxim Dounin November 24, 2017 08:36AM

Re: systemd: PID file /var/run/nginx.pid not readable (yet?) after start.

Gena Makhomed November 24, 2017 09:50AM

Re: systemd: PID file /var/run/nginx.pid not readable (yet?) after start.

Vadim A. Misbakh-Soloviov November 24, 2017 10:14AM

Re: systemd: PID file /var/run/nginx.pid not readable (yet?) after start.

Maxim Dounin November 24, 2017 02:46PM

Re: systemd: PID file /var/run/nginx.pid not readable (yet?) after start.

Gena Makhomed November 25, 2017 09:24AM

Re: systemd: PID file /var/run/nginx.pid not readable (yet?) after start.

Slawa Olhovchenkov November 25, 2017 09:38AM

Re:systemd: PID file /var/run/nginx.pid not readable (yet?) after start.

Konstantin Tokarev November 25, 2017 08:48PM

Re: systemd: PID file /var/run/nginx.pid not readable (yet?) after start.

S.A.N November 23, 2017 12:30PM

Re: systemd: PID file /var/run/nginx.pid not readable (yet?) after start.

Gena Makhomed November 23, 2017 12:56PM

Re: systemd: PID file /var/run/nginx.pid not readable (yet?) after start.

Maxim Dounin November 23, 2017 12:58PM

Re: systemd: PID file /var/run/nginx.pid not readable (yet?) after start.

Илья Шипицин November 23, 2017 01:32PM

Re: systemd: PID file /var/run/nginx.pid not readable (yet?) after start.

Konstantin Pavlov November 23, 2017 03:08PM

Re: systemd: PID file /var/run/nginx.pid not readable (yet?) after start.

Evgeniy Berdnikov November 23, 2017 02:06PM



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