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Apache / PHP error_log location in Docker

My PHP script has an error. For example, this shows this on the screen:

Warning: require(/var/www/foo.php): failed to open stream:

Where can I find this in the logs?

I tried docker logs containerName, but it only shows access logs. E.g.,

192.168.2.1 - - [17/Mar/2019:10:00:00 +0000] "GET / HTTP/1.1" 200 505 "-" "Mozilla/5.0 (Windows NT 6.1; Win64; x64)...

It doesn’t show the PHP error above.

Going in the Apache logs folder inside the container via docker exec shows the following:

ls -hltra /var/log/apache2

total 0
lrwxrwxrwx. 1 www-data www-data 11 Feb  6 04:42 other_vhosts_access.log -> /dev/stdout
lrwxrwxrwx. 1 www-data www-data 11 Feb  6 04:42 error.log -> /dev/stderr
lrwxrwxrwx. 1 www-data www-data 11 Feb  6 04:42 access.log -> /dev/stdout

I’m not even sure if this is where the PHP logs are at, but I can’t view them.

Where can I find the Apache/PHP error logs in Docker?

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2

Answers


  1. 0

    Ensure that you have the following inside php.ini in order to be able to see the errors using docker logs -f containerName as in general, sending the logs to /dev/stdout and /dev/stderr makes you able to receive it through docker logs:

    log_errors = On
error_log = /dev/stderr
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  2. 0

    To only see PHP logs, try:

    docker logs -f [containerName] >/dev/null

    To see all logs, try:

    docker logs -f [containerName]
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