Handle access log & error log on Docker

Submitted:

2017-01-07 08:23 UTC

Modified:

2021-12-02 22:51 UTC

Votes:	45
Avg. Score:	4.5 ± 0.7
Reproduced:	44 of 44 (100.0%)
Same Version:	18 (40.9%)
Same OS:	34 (77.3%)

From:

tchiot dot ludo at gmail dot com

Assigned:

bukka (profile)

Status:

Assigned

Package:

FPM related

PHP Version:

7.1.0

OS:

Docker

Private report:

CVE-ID:

None

[2017-01-07 08:23 UTC] tchiot dot ludo at gmail dot com

Description:
------------
On Dockerfile, the official distribution of php have this configuration : 

[global]
error_log = /proc/self/fd/2 

; if we send this to /proc/self/fd/1, it never appears
access.log = /proc/self/fd/2

seems related to this configuration : 

catch_workers_output boolean
Redirect worker stdout and stderr into main error log. If not set, stdout and stderr will be redirected to /dev/null according to FastCGI specs. Default value: no.

With this configuration, we can't really parse log file (or monitor log) because access log & php fpm stdout & error log in not separated.

see dockerfile maintainer response : https://github.com/docker-library/php/issues/358#issuecomment-271033464

So there is 2 issues here : 
- access log won't write to docker special files : /dev/stdout
- fpm main log with catch_workers_output = yes output stdout & stderr on the same log file, maybe we need a new configuration options in order to have workers output error to stderr & fpm master process std*** to std***

Patches

Pull Requests

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[2017-04-10 19:06 UTC] bukka@php.net

-Status: Open +Status: Assigned -Assigned To: +Assigned To: bukka

[2019-08-08 11:36 UTC] yudkin146 at gmail dot com

Faced with same problem.
Can not write to "/dev/stderr" or even "/proc/self/fd/2" from php-fpm, but can do it from "php -r" or bash or anything else.

file_put_contents(/proc/self/fd/2): failed to open stream: No such file or directory

I use docker image php:7-fpm with full standard config.

[2021-12-02 22:51 UTC] bukka@php.net

-Type: Bug +Type: Feature/Change Request