Symptoms
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There are processes with high CPU load related to the sw-engine service:
psaadm 27219 56.2 1.0 356796 87564 ? Rs 13:37 2:49 /usr/bin/sw-engine -c /opt/psa/admin/conf/php.ini /opt/psa/admin/plib/scripts/task-async-executor.php -task-id 4597
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The Log Browser extension is installed.
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There are many long-running tasks related to the Log Browser extension with the 'ext-log-browser-parse-maillog' type when checking using the following query:
plesk db "SELECT id,type,status,finishTime FROM longtasks WHERE status <> 'done'"
Cause
Plesk extension bug with ID EXTPLESK-5686.
Resolution
Until the bug is fixed, apply one of the following workarounds:
Workaround 1:
Edit panel.ini file, appending the following lines to it:
[ext-log-browser]
mailQueue.customerAccess = false
Workaround 2:
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Connect to the server via SSH.
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Flush the journalctl logs, for example, based on size:
# journalctl --vacuum-size=500M
or based on time:
# journalctl --vacuum-time=2d
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Re-enable the Log Browser extension:
# plesk bin extension --disable log-browser && plesk bin extension --enable log-browser
Workaround 3:
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Connect to the server via SSH.
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Move the extension database file to another directory:
# mv /usr/local/psa/var/modules/log-browser/log-browser.sqlite3 /root/log-browser.sqlite3_bak
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Run the extension utility as follows:
# plesk bin extension --upgrade log-browser
with