- Plesk for Linux
Plesk is not accessible with one of the following error messages:
PLESK_INFO: ERROR: Zend_Db_Statement_Exception: SQLSTATE[HY000]: General error: 1 Can't create/write to file '/tmp/#sql_74c6_0.MYI' (Errcode: 28) (Pdo.php:234)
PLESK_INFO: DB query failed: SQLSTATE[HY000]: General error: 1030 Got error 28 from storage engine, query was: DESCRIBE `sessions`
PLESK_INFO: ERROR: PleskDBException: Unable to connect to database: mysql_connect(): Connection refused /var/lib/mysql/mysql.sock (Error code: 2002). Please check that database server is started and accessible. (Abstract.php:69)
There is no free disk space or free inodes in the root partition:
# df -h /
Filesystem Size Used Avail Use% Mounted on
/dev/sda3 50G 50G 20K 100% /
# df -i /
Filesystem Inodes IUsed IFree IUse% Mounted on
/dev/vzfs 800000 800000 0 100% /
Starting the psa service via SSH might fail with the following error message:
# service psa start
ERROR: Unable to create the PID file (/var/run/sw-engine.pid).: No space left on device (28)
The following record might appear in the file
CONFIG_TEXT: crond: postdrop: warning: mail_queue_enter: create file maildrop/550294.6391: No space left on device
Different services may fail to start with the error
No space left on device, for example:
# systemctl status httpd.service
● httpd.service - The Apache HTTP Server
Loaded: loaded (/usr/lib/systemd/system/httpd.service; enabled; vendor preset: disabled)
Active: failed (Result: resources) since sab 2016-11-26 13:19:52 CET; 32min ago
systemd: httpd.service failed.
systemd: Starting The Apache HTTP Server...
systemd: httpd.service failed to run 'start' task: No space left on device
- Following lines could be found in
# grep "write error" /var/log/plesk/psa_service.log
cat: write error: Broken pipe
tac: write error: Broken pipe
There is no free disk space or inodes in the root partition.
Free up some disk space or increase the inodes limit.
Warning: Disk partitioning is a task which is not related to Plesk and therefore it is not covered by Plesk Technical Support.
If you are not familiar with Linux system administering and would like our professionals to handle this task, contact Professional Services team using the following link:
If Plesk server is a Virtuozzo container (the file
/proc/user_beancounters exists) and you are the owner or administrator of the Virtuozzo/OpenVZ hardware node, the inode limit can be increased as described in the Virtuozzo article https://help.virtuozzo.com/customer/en/portal/articles/2509811.