When the WordPress Install button is pressed (including the custom install option) in Application Vault, a progress bar is shown but never changes from 0%.
Log into Plesk.
Click "Tools and Utilities" > "Application Vault" > "My Apps".
Try installing the app. Here, the notification bar shows: Please wait…. 0%. This bar may remain the same for several hours with nothing happening.
Cause
A large number of applications are stuck in the psa.longtasks table. Or MySQL service is down.
Resolution
Backup the psa database by following the instructions in KB #213904125
Make sure that MySQL service is running:
Linux:
# service mysqld status # systemctl status mysqld.service # systemctl status mariadb
Windows:
> net start MySQL
Check that /dev/null has permissions crw-rw-rw-:
Linux:
ls -la /dev/null crw-rw-rw-. 1 root root 1, 3 Jul 19 15:15 /dev/null
Log into MySQL and access the psa database:
Linux:
MYSQL_PWD=`cat /etc/psa/.psa.shadow` mysql -uadmin psa
Windows:
"%plesk_dir%"\\MySQL\\bin\\mysql.exe -uadmin -p psa -P8306
Check the long tasks that are present on the server:
mysql> select * from longtasks;
+----+--------------+---------+-------------+-----------------+----------------+----------------+-------------+---------------+---------------------+---------------------+-------+ | id | type | context | status | statusProcessed | progressStatus | progressParams | progressMax | progressValue | startTime | finishTime | pid | +----+--------------+---------+-------------+-----------------+----------------+----------------+-------------+---------------+---------------------+---------------------+-------+ | 1 | aps-download | NULL | started | 0 | queue | NULL | 100 | 0 | 2017-07-21 13:34:03 | 0000-00-00 00:00:00 | 0 | | 2 | aps-cache | NULL | done | 0 | done | NULL | 100 | 100 | 2017-07-21 13:35:56 | 2017-07-21 13:35:56 | 31908 | | 3 | aps-cache | NULL | done | 0 | done | NULL | 100 | 100 | 2017-07-21 13:36:23 | 2017-07-21 13:36:23 | 31973 | | 4 | aps-download | NULL | not_started | 0 | queue | NULL | 100 | 0 | 2017-07-21 13:48:42 | 0000-00-00 00:00:00 | 0 | | 5 | aps-cache | NULL | done | 0 | done | NULL | 100 | 100 | 2017-07-21 13:57:51 | 2017-07-21 13:57:51 | 4515 | +----+--------------+---------+-------------+-----------------+----------------+----------------+-------------+---------------+---------------------+---------------------+-------+
Delete these tasks:
mysql> truncate longtasks; mysql> truncate longtaskparams;
Make sure /etc/localtime file has 644 permissions:
# ls -la /etc/localtime
If not, set it:
# chmod 644 /etc/localtime
Try installing the application again.