Unable to open the domain's logs in Plesk: PHP Fatal error: Allowed memory size of 268435456 bytes exhausted (tried to allocate 8192 bytes)

Symptoms

• Unable to open Domains > example.com > Logs where nothing happens after the clic or an error is received:

  500 error

• The following is found on the /var/log/plesk/panel.log log file:

  PHP Fatal error: Allowed memory size of 268435456 bytes exhausted (tried to allocate 8192 bytes) in /usr/local/psa/admin/plib/LogBrowser/Reader/PhpFopen.php on line 105

• The compressed error logs of example.com are large in size:

  # ls -lah /var/www/vhosts/system/example.com/logs/
  total 31M
  drwx------ 2 psaadm root 4,0K dic 24 03:59 .
  drwx--x--x 6 root psaserv 4,0K jun 27 16:14 ..
  -rw-r--r-- 3 root root 2,1K dic 24 09:22 access_log
  -rw-r--r-- 3 root root 3,4M dic 24 03:59 access_log.processed
  -rw-r--r-- 3 root root 0 dic 23 05:29 access_ssl_log
  -rw-r--r-- 3 root root 51K dic 24 03:59 access_ssl_log.processed
  -rw-r--r-- 3 root root 9,8K dic 19 12:19 error_log
  -rw-r--r-- 3 root root 27M nov 16 17:51 error_log.1.gz

• The compressed logs have a huge amount of lines:

  # zcat /var/www/vhosts/system/example.com/logs/error_log.1.gz | wc -l
  20022263

Cause

Due to insufficient PHP memory limit Plesk Log manager fails to process big-sized rotated log files.

Resolution

1. Connect to the server via SSH.

2. Increase the memory_limit value in /usr/local/psa/admin/conf/php.ini using a text editor.

   # grep 'memory_limit' /usr/local/psa/admin/conf/php.ini
   memory_limit = 512M

3. Restart Plesk service:

   # service sw-cp-server restart